CN107843951A - Light guide plate, backlight module and display device - Google Patents
Light guide plate, backlight module and display device Download PDFInfo
- Publication number
- CN107843951A CN107843951A CN201711065176.5A CN201711065176A CN107843951A CN 107843951 A CN107843951 A CN 107843951A CN 201711065176 A CN201711065176 A CN 201711065176A CN 107843951 A CN107843951 A CN 107843951A
- Authority
- CN
- China
- Prior art keywords
- light guide
- guide plate
- backlight module
- film
- tabula rasa
- 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
Classifications
-
- 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
- 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
-
- 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
- G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Planar Illumination Modules (AREA)
Abstract
The present invention provides a kind of light guide plate, backlight module and display device.The light guide plate includes tabula rasa, then the film for being diffused for the light for entering incident side and being reflected towards exiting surface is installed at the back side of the tabula rasa, so,, can be by removing the film being arranged on the tabula rasa when defect occurs in light guide plate rear end by setting one layer of dismountable film on the back side of tabula rasa, the film more renewed, and tabula rasa, so as to save cost, improves production efficiency then without scrapping processing.
Description
Technical field
The invention belongs to display technology field, is to be related to a kind of light guide plate, backlight module and display dress more specifically
Put.
Background technology
Backlight module is an important component of display device, and the quality and service life of backlight module affect whole
The quality of individual display device.Backlight module generally comprises backboard, pcb board, lamp bar and light guide plate, when the light velocity of light source transmitting enters
After light guide plate, then scatter on the exiting surface of light guide plate by the site of light guide plate, so as to realize that the light for sending light source disperses
Uniformly.
Prepared by traditional light guide plate, mostly using ink silk screen printing, i.e., directly by ink silk screen printing on acrylic tabula rasa, this sets
Meter and procedure for producing can be because rear end the defects of causing, such as white point, scratch, dirty, so as to cause full wafer product not repair
And scrapping to reuse.
Therefore, how to provide a kind of light guide plate for repairing rear end defect is technical problem urgently to be resolved hurrily in the industry.
The content of the invention
It is an object of the invention to provide a kind of light guide plate, backlight module and display device, it is intended to solves in the prior art
It is existing because light guide plate rear end defect can not repair cause product rejection the technical problem that can not use.
To achieve these goals, the technical solution adopted by the present invention is：A kind of light guide plate, including tabula rasa, the tabula rasa
Side be the incident side entered for light, the front of the tabula rasa be exiting surface, and the back side of the tabula rasa is provided with for general
The film that the light that the incident side enters is diffused and reflected towards the exiting surface.
Further, screen printing is brushed with guide-lighting figure line on the film.
Further, the film is bonded on the tabula rasa.
Backlight module, including backboard, the light guide plate being installed on the backboard, the PCB located at the light guide plate incident side
Plate and the lamp bar being arranged on the pcb board；The pcb board is installed on the backboard, and the light guide plate is described above
Light guide plate.
Further, the PCB is bonded on the backboard.
Further, in addition to be provided close to the reflecting plate of the film side, the reflecting plate be located at the backboard with
Between the film.
Further, in addition to located at the light guide plate light emission side blooming piece.
Further, the backlight module also includes the carriage for supporting the blooming piece, and the carriage is installed on
On the backboard, the light guide plate and the pcb board are placed in the carriage.
Further, the backboard includes the baffle plate extended along backboard periphery vertical direction.
Present invention also offers a kind of display device, including above-mentioned backlight module.
The beneficial effect of light guide plate provided by the invention is：Compared with prior art, the light guide plate in the present invention includes
Tabula rasa, then it is provided with the back side of above-mentioned tabula rasa and is diffused for the light for entering incident side and is reflected towards exiting surface
Film, so, by the back side of tabula rasa set one layer of dismountable film, can when defect occurs in light guide plate rear end
By removing the film being arranged on the tabula rasa, the film more renewed, and tabula rasa need not then scrap processing, so as to save
Cost, improves production efficiency.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, below will be to embodiment or description of the prior art
In required practical accompanying drawing be briefly described, it should be apparent that, drawings in the following description are only the one of the present embodiment
A little embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to these
Accompanying drawing obtains other accompanying drawings.
Fig. 1 is the top view for the backlight module that one embodiment of the invention proposes；
Fig. 2 is the partial enlarged drawing that A is local in Fig. 1；
Fig. 3 is the schematic diagram for the light guide plate that one embodiment of the invention proposes.
Wherein, each reference in figure：
1- backboards；2-PCB plates；3- lamp bars；4- light guide plates；5- reflecting plates；6- blooming pieces；7- liquid crystal panels；8- is supported
Frame；9- centers；10- front frames；11- baffle plates；41- tabula rasas；42- films；61- necks.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
It should be noted that when element is referred to as " being fixed on " or " being arranged at " another element, it can be directly another
On one element or it may be simultaneously present centering elements.When an element is known as " being connected to " another element, it can be with
It is directly to another element or may be simultaneously present centering elements.
Only it is phase each other in addition, it should also be noted that, the orientation term such as left and right, upper and lower in the embodiment of the present invention
To concept or using the normal operating condition of product as reference, and should not be regarded as restrictive.Below in conjunction with tool
Realization of the body embodiment to the present invention is described in detail.
As shown in Figures 1 to 3, the present invention proposes a kind of light guide plate 4, including tabula rasa 41, and the side of the tabula rasa 41 is for light
The incident side that line enters, the front of tabula rasa 41 is exiting surface, is provided with film 42 on the back side of tabula rasa 41, the film 42 can be used for
The light that above-mentioned incident side enters is diffused and reflected towards the exiting surface.So, by being set on the back side of tabula rasa 41
One layer of dismountable film 42 is put, can be by removing the film being arranged on the tabula rasa 41 when defect occurs in the rear end of light guide plate 4
42, the film 42 more renewed, and tabula rasa 41, so as to save cost, improves production efficiency then without scrapping processing.
Preferably, in the present embodiment, above-mentioned tabula rasa 41 is acrylic tabula rasa, and certainly, species, the shape of the tabula rasa 41 are equal
It is not particularly limited, those skilled in the art can be according to being actually needed, if desired for the specific performance requirement of the light guide plate 4 of preparation
Selected.
Preferably, in this embodiment, above-mentioned film 42 is that PET (Poly-Ethylene-Terephthalate, gathers to benzene
Naphthalate) make transparent thin film layer, by the way that above-mentioned film 42 is prepared into transparence, can further improve light
Transmitance, the thickness of above-mentioned film layer 42 can be between 1-3 millimeters.Thus it is possible, on the one hand, the intensity of film layer can be ensured,
Prepared for next process；On the other hand, the thickness range also may be such that film 42 has higher light transmission rate.
Further, as a kind of embodiment of light guide plate provided by the invention, silk-screen printing on above-mentioned film 42
There is guide-lighting figure line.By forming guide-lighting figure line on above-mentioned film 42 by net-point printing on above-mentioned film 42, so, lead to
The geometric figure for being formed on the surface of film 42 and meeting optical principle is crossed, can be achieved to be uniformly distributed light source, because this is thin
Film 42 is layed on above-mentioned tabula rasa 41, therefore, can be by changing on above-mentioned tabula rasa 41 when defect occurs in the rear end of light guide plate 4
Film 42, without changing tabula rasa 41, so as to cost-effective, improve production efficiency.
Further, it is bonded in as a kind of embodiment of backlight module provided by the invention, above-mentioned film 42
State on tabula rasa 41, you can toughness glue is coated by the surrounding in film 42, is then bonded on tabula rasa 41, can also be
Neck (accompanying drawing is not made) is set on above-mentioned tabula rasa 41, and above-mentioned film 42 is stuck in the neck of above-mentioned tabula rasa 41, herein not
Make unique limit.Certainly, in other embodiments of the invention, according to actual conditions and specific requirement, the painting of above-mentioned sticky glue
The optional position of above-mentioned film 42 can be arranged on by covering position, or sticky glue is arranged on above-mentioned tabula rasa 41, herein not
Make unique limit.
Backlight module, including backboard 1, light guide plate 4, pcb board 2 and lamp bar 3, wherein light guide plate 4 are arranged in backboard 1,
Pcb board 2 is arranged at the incident side of light guide plate 4, and above-mentioned lamp bar 3 is arranged on above-mentioned pcb board 2, and the light guide plate 4 includes tabula rasa 41,
The side of the tabula rasa 41 is the incident side entered for light, and the front of tabula rasa 41 is exiting surface, is provided with the back side of tabula rasa 41
Film, the film 42 can be used for the light that above-mentioned incident side enters being diffused and reflected towards the exiting surface.So, pass through
One layer of dismountable film 42 is set on tabula rasa 41, when defect occurs in the rear end of light guide plate 4, the light can be arranged at by removing
Film 42 on plate 41, the film 42 more renewed, and tabula rasa 41, so as to save cost, carries then without scrapping processing
High production efficiency.
Further, referring to Fig. 2, a kind of embodiment as backlight module provided by the invention, above-mentioned
Lamp bar 3 electrically connects with pcb board 2, and pcb board 2 is in strip, and lamp bar 3 is uniformly distributed on pcb board 2, in the present embodiment, on
It can also be LED to state lamp bar 3, do not limited uniquely herein.
Further, referring to Fig. 2, a kind of embodiment as backlight module provided by the invention, above-mentioned
Pcb board 2 is to be bonded in by binding agent on backboard 1, so when pcb board 2 damages, can be individually replaced pcb board 2, without
Whole backboard 1 is changed, reduces maintenance cost.
Further, Fig. 2 and Fig. 3 are referred to, as a kind of embodiment of backlight module provided by the invention, on
Stating backlight module also includes reflecting plate 5, and reflecting plate 5 is close to the above-mentioned side of film 42 and positioned at above-mentioned backboard 1 and above-mentioned film 42
Between.In the present embodiment, said reflection plate 5 is used to launch the light that lamp bar 3 is sent to the film 42 on light guide plate 4, from
And the light for light source being sent by the film 42 on light guide plate 4 is uniformly dispersed, further improve the utilization rate of light.
Further, referring to Fig. 2, a kind of embodiment as backlight module provided by the invention, above-mentioned
Backlight module also includes blooming piece 6, blooming piece 6 located at light guide plate 4 and the phase of reflecting plate 5 back to side, i.e., blooming piece 6 and
Reflecting plate 5 is respectively arranged on the opposite sides of light guide plate 4, and the light that blooming piece 6 is used to transfer out light guide plate 4 is carried out at optics
Reason.In actual production, due to the side light crescendo close to lamp, the light away from lamp is weaker, can by adding blooming piece 6
So that light more homogenizes.
Further, referring to Fig. 2, a kind of embodiment as backlight module provided by the invention, above-mentioned
Reflecting plate 5 is made using aluminium, because aluminium is mostly white, so, using white as background, may be such that anti-in backlight module
It is stronger to penetrate light.
Further, referring to Fig. 2, a kind of embodiment as backlight module provided by the invention, the backlight
Module also includes carriage 8, and to support blooming piece 6, above-mentioned carriage 8 is installed on backboard 1 carriage 8, and guide-lighting
Plate 4 and pcb board 2 are placed in above-mentioned carriage 8.Preferably, in embodiment, by corresponding to light guide plate 4 in carriage 8
And neck (not made in accompanying drawing) is set on the position of pcb board 2, so as to realize the fixation to above-mentioned light guide plate 4 and pcb board 2.
Further, referring to Fig. 2, providing a kind of embodiment of backlight module, above-mentioned branch as the present invention
The cross section of support frame 8 is L-shaped, to be buckled on backboard 1, at the same time, can also protect side and the pcb board 2 of light guide plate 4.
Certainly, carriage 8 can also be other shapes, not limit uniquely herein.
Further, referring to Fig. 2, providing a kind of embodiment of backlight module, the above-mentioned back of the body as the present invention
Plate 1 also includes baffle plate 11, vertical direction extension of the baffle plate along the above-mentioned periphery of backboard 1, the baffle plate 11 and the above-mentioned one of backboard 1
Above-mentioned carriage 8, by setting baffle plate 11, can be stuck between above-mentioned backboard 1 and above-mentioned baffle plate 11, realize to above-mentioned branch by shaping
The fixation of support frame 8.Certainly, in the present embodiment, above-mentioned baffle plate 11 can also not made herein with above-mentioned backboard 1 by dismantling connection
It is unique to limit.
Present invention also offers a kind of display device, and it includes above-mentioned backlight module, and display device of the invention is by making
With above-mentioned backlight module, so as to improve the service life of the display device and reduce its production cost.
Further, referring to Fig. 2, a kind of embodiment as display device provided by the invention, above-mentioned
Display device includes liquid crystal panel 7, center 9, front frame 10, and liquid crystal panel 7 is arranged on above-mentioned center 9 and opposite to each other for optical film
The side of piece 6, the above-mentioned one side of center 9 is to support liquid crystal panel 7, on the other hand, due to corresponding to blooming piece on center 9
Neck 61 is provided with 6 position, so as to which the fixation to above-mentioned blooming piece 6 can be realized, in addition, above-mentioned front frame 10 covers in liquid crystal
On panel 7 and backlight module, so as to realize the fixation to whole display device.In a particular application, above-mentioned liquid crystal panel 7 can be with
For any type of panel, for example, based on TFT-LCD (Thin Film Transistor Liquid Crystal Display,
Thin Film Transistor-LCD) technology liquid crystal display panel, based on LCD (Liquid Crystal Display, liquid crystal
Showing device) technology liquid crystal display panel, based on OLED (Organic Light Emitting Display, organic electric laser
Display) technology Organic Electricity laser display panel, based on QLED (Quantum Dot Light Emitting Diodes, quantum
Point luminescent diode) technology light emitting diode with quantum dots display panel or curved face display panel etc., do not limit uniquely herein.
Preferably as a kind of embodiment of display device provided by the invention, above-mentioned backboard 1 uses iron material system
Into because iron has good thermal conductivity, its intensity is high, and price is low.Certainly, in other embodiments of the invention, according to
Actual conditions and specific, above-mentioned backboard 1 can also use the other materials such as aluminium be made, and not do unique restriction herein.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement made within refreshing and principle etc., should be included in the scope of the protection.
Claims (10)
1. light guide plate, it is characterised in that including tabula rasa, the side of the tabula rasa is the incident side entered for light, the tabula rasa
Front be exiting surface, the back side of the tabula rasa, which is provided with, to be diffused for the light for entering the incident side and towards institute
State the film of exiting surface reflection.
2. light guide plate as claimed in claim 1, it is characterised in that screen printing is brushed with guide-lighting figure line on the film.
3. light guide plate as claimed in claim 1, it is characterised in that the film is bonded on the tabula rasa.
4. backlight module, including backboard, the light guide plate being installed on the backboard, the pcb board located at the light guide plate incident side,
And it is arranged at the lamp bar on the pcb board；The pcb board is installed on the backboard, it is characterised in that the light guide plate is
Light guide plate as described in claim any one of 1-3.
5. backlight module as claimed in claim 4, it is characterised in that the PCB is bonded on the backboard.
6. backlight module as claimed in claim 4, it is characterised in that be also located at the back of the body including reflecting plate, the reflecting plate
Between plate and the film.
7. backlight module as claimed in claim 6, it is characterised in that also include the optics on the light guide plate exiting surface
Diaphragm.
8. backlight module as claimed in claim 7, it is characterised in that the backlight module also includes supporting the blooming piece
Carriage, the carriage is installed on the backboard, and the light guide plate and the pcb board are placed in the carriage.
9. backlight module as claimed in claim 4, it is characterised in that the backboard is included along backboard periphery Vertical Square
To the baffle plate of extension.
10. display device, it is characterised in that including the backlight module described in claim any one of 4-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711065176.5A CN107843951A (en) | 2017-11-02 | 2017-11-02 | Light guide plate, backlight module and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711065176.5A CN107843951A (en) | 2017-11-02 | 2017-11-02 | Light guide plate, backlight module and display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107843951A true CN107843951A (en) | 2018-03-27 |
Family
ID=61681671
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711065176.5A Pending CN107843951A (en) | 2017-11-02 | 2017-11-02 | Light guide plate, backlight module and display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107843951A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108773220A (en) * | 2018-05-25 | 2018-11-09 | 惠州市德赛西威汽车电子股份有限公司 | A method of improving car decoration character effect |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5730518A (en) * | 1991-08-22 | 1998-03-24 | Tosoh Corporation | Backlighting device |
| US20040125589A1 (en) * | 2002-12-27 | 2004-07-01 | Chang-Chih Sung | Backlight unit |
| CN1512198A (en) * | 2002-12-27 | 2004-07-14 | 鸿富锦精密工业（深圳）有限公司 | Reflective plate and area source device |
| CN101149525A (en) * | 2007-11-06 | 2008-03-26 | 上海广电光电子有限公司 | Backlight module manufacture method |
-
2017
- 2017-11-02 CN CN201711065176.5A patent/CN107843951A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5730518A (en) * | 1991-08-22 | 1998-03-24 | Tosoh Corporation | Backlighting device |
| US20040125589A1 (en) * | 2002-12-27 | 2004-07-01 | Chang-Chih Sung | Backlight unit |
| CN1512198A (en) * | 2002-12-27 | 2004-07-14 | 鸿富锦精密工业（深圳）有限公司 | Reflective plate and area source device |
| CN101149525A (en) * | 2007-11-06 | 2008-03-26 | 上海广电光电子有限公司 | Backlight module manufacture method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108773220A (en) * | 2018-05-25 | 2018-11-09 | 惠州市德赛西威汽车电子股份有限公司 | A method of improving car decoration character effect |
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Application publication date: 20180327 |
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