CN106125404A - A kind of backlight module and display device - Google Patents
A kind of backlight module and display device Download PDFInfo
- Publication number
- CN106125404A CN106125404A CN201610804233.6A CN201610804233A CN106125404A CN 106125404 A CN106125404 A CN 106125404A CN 201610804233 A CN201610804233 A CN 201610804233A CN 106125404 A CN106125404 A CN 106125404A
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- CN
- China
- Prior art keywords
- backlight module
- electrochromic device
- drive circuit
- light guide
- guide plate
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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
- G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
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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)
- Planar Illumination Modules (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
Abstract
The present invention relates to Display Technique field, particularly to a kind of backlight module and display device.This backlight module includes drive circuit and the controller that the stacked reflector plate of light source, light guide plate and described light guide plate electrically connects with described light source；Between described controller and drive circuit, signal is connected；This backlight module also includes being arranged at described reflector plate towards described light guide plate side and the electrochromic device that be arranged in parallel with described reflector plate, electrically connects between described electrochromic device with described drive circuit.This backlight module can reduce low gray-scale intensity by electrochromic device, and then improves static contrast and the display effect of display device.
Description
Technical field
The present invention relates to Display Technique field, particularly to a kind of backlight module and display device.
Background technology
Due to LED (Light Emitting Diode, light emitting diode) have that running voltage is low, power and energy saving, use
Life-span length, good stability, response time are short and drive convenient feature, more and more many LCD (Liquid Crystal
Display, liquid crystal display) product uses the backlight technology of LED.In general, backlight module LED is divided into straight-down negative and side to enter
Formula two kinds, multiple LED are placed directly in after display screen by direct-light type LED backlight module, and side entering-type LED backlight module will
Multiple LED are distributed in the periphery of display screen and by light guide plate, uniform light are guided display screen.
The structure of existing side entering-type LED backlight module 1 is as it is shown in figure 1, generally comprise backboard 11, glue frame 12, light source 13, lead
Tabula rasa 14, reflector plate 15 and optical film material 16, light source 13 is arranged at the incident side of light guide plate 14, between light guide plate 14 and backboard 11
Being provided with reflector plate 15, the light emission side of light guide plate 14 is provided with optical film material 16；And the side entering-type LED backlight module of existing structure
1 after each parts determine, the light luminance of optical film material 16 light emission side is i.e. determined, so the existing side entering type LED back of the body
Light module 1 cannot improve static contrast and the display effect of display device because regulating low gray-scale intensity.
Summary of the invention
The invention provides a kind of backlight module and display device, this backlight module can be reduced by electrochromic device
Low gray-scale intensity, and then improve static contrast and the display effect of display device.
For reaching above-mentioned purpose, the present invention provides techniques below scheme:
A kind of backlight module, the reflector plate being stacked with described light guide plate including light source, light guide plate is electrically connected with described light source
The drive circuit connect and controller；Between described controller and drive circuit, signal is connected；
Also include being arranged at described reflector plate towards described light guide plate side and electroluminescent with what described reflector plate be arranged in parallel
Electrochromic device, electrically connects between described electrochromic device with described drive circuit.
Above-mentioned electrochromic device is the device using electrochromic material to make, and has the material of electrochromic property
It is referred to as electrochromic material.Electrochromism refers to that the optical properties (reflectance, transmitance, absorbance etc.) of material is at extra electric field
The lower phenomenon that stable, reversible color change occurs of effect, show as the reversible change of color and transparency in appearance.
Owing to backlight module is provided with electrochromic device at reflector plate towards the side of light guide plate, work at backlight module
During, backlight module controls drive circuit by controller and exports the voltage of electrochromic device, electrochromic device root
Make electrochromic material change between pellucidity and colored state according to the different voltages of drive circuit input, and work as
When electrochromic material is in pellucidity, light penetration is higher, and when electrochromic material is in colored state, light
Transmitance is relatively low, and therefore, backlight module by the light penetration of electrochromic device regulation light emission side, and then can regulate the back of the body
The brightness of light module emergent ray and intensity.When electrochromic device is in different colored state, electrochromic device energy
Enough reduce the transmitance of light, make the amount of light of the outgoing of backlight module light emission side reduce, bright to reduce the light of light emission side
Degree and intensity, and then reduce the low gray-scale intensity of backlight module, so, backlight module can reduce the back of the body by electrochromic device
The low gray-scale intensity of light module such that it is able to improve static contrast and the display effect of display device.
Therefore, this backlight module can reduce low gray-scale intensity by electrochromic device, and then improves display device
Static contrast and display effect.
Preferably, described electrochromic device includes the first transparency conducting layer being sequentially located on underlay substrate, electroluminescent change
Chromatograph, ion conductive layer, ion storage and the second transparency conducting layer.
Preferably, described first transparency conducting layer and the second transparency conducting layer all electrically connect with described drive circuit.
Preferably, described first transparency conducting layer by be arranged at the first control line of described electrochromic device periphery with
Described drive circuit electrically connects；Described second transparency conducting layer is by being arranged at the second control of described electrochromic device periphery
Line electrically connects with described drive circuit.
Preferably, the transmitance of described electrochromic device is 20%～90%.
Preferably, described electrochromic device is arranged between described light guide plate and described reflector plate.
Owing to electrochromic device is arranged between light guide plate and reflector plate, therefore, backlight module can preferably control
The light penetration of light guide plate it is reflected towards from reflector plate.
Preferably, described electrochromic device is adhered to described reflector plate.
Preferably, described electrochromic device is adhered to described reflector plate by transparent adhesive.
Preferably, described electrochromic device projected area on described light guide plate is led described less than described reflector plate
Projected area on tabula rasa.
It addition, present invention also offers a kind of display device, this display device includes display floater and such as above-mentioned technology
Any one backlight module that scheme provides.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of side entering-type LED backlight module in prior art；
The structural representation of the backlight module that Fig. 2 provides for an embodiment of the present invention；
Fig. 3 be in Fig. 2 the A of the backlight module shown in structure to structural representation；
Fig. 4 is the structural representation of the electrochromic device shown in structure in Fig. 2；
Fig. 5 is the circuit catenation principle figure of the electrochromic device shown in structure in Fig. 2.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Describe, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments wholely.Based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under not making creative work premise
Embodiment, broadly falls into the scope of protection of the invention.
Embodiments providing a kind of backlight module and display device, this display device includes display floater and the back of the body
Light module, this backlight module can reduce low gray-scale intensity by electrochromic device, and then the static state improving display device is right
Than degree and display effect.
Wherein, refer to Fig. 2 and Fig. 3, the backlight module 100 that an embodiment of the present invention provides, including light source 110,
Light guide plate 120 and light guide plate 120 drive circuit 170 that electrically connects with light source 110 of stacked reflector plate 130 and controller 180,
Between controller 180 with drive circuit 170, signal is connected；
Above-mentioned backlight module 100 also includes being arranged at reflector plate 130 towards light guide plate 120 side and flat with reflector plate 130
The electrochromic device 140 that row is arranged, electrically connects between electrochromic device 140 with drive circuit 170.As shown in Fig. 2 structure,
Backlight module 100 includes the electrochromic device 140 being arranged between reflector plate 130 and light guide plate 120.
As shown in Fig. 4 structure, above-mentioned electrochromic device 140 is the device using electrochromic material to make, and has
The material of electrochromic property is referred to as electrochromic material.Electrochromism refer to material optical properties (reflectance, transmitance,
Absorbance etc.) under the effect of extra electric field, there is the phenomenon of stable, reversible color change, show as in appearance color and
Transparency reversible change.
Owing to backlight module 100 is provided with electrochromic device 140 at reflector plate 130 towards the side of light guide plate 120,
In backlight module 100 work process, backlight module 100 controls drive circuit 170 output to electrochromism device by controller 180
The voltage of part 140, electrochromic device 140 makes electrochromic material transparent according to the different voltages that drive circuit 170 inputs
Change between state and colored state, and when electrochromic material is in pellucidity, light penetration is higher, and
When electrochromic material is in colored state, light penetration is relatively low, and therefore, backlight module 100 can pass through electrochromism
Device 140 regulates the light penetration of light emission side, and then regulates brightness and the intensity of backlight module 100 emergent ray.When electroluminescent
When Electrochromic device 140 is in different colored state, electrochromic device 140 can reduce the transmitance of light, makes backlight mould
The amount of light of the outgoing organizing 100 light emission side reduces, and to reduce light luminance and the intensity of light emission side, and then reduces backlight module
The low gray-scale intensity of 100, so, backlight module 100 can reduce the low ash of backlight module 100 by electrochromic device 140
Rank brightness such that it is able to improve static contrast and the display effect of display device.
Therefore, this backlight module 100 can reduce low gray-scale intensity by electrochromic device 140, and then improves display
The static contrast of device and display effect.
In a kind of specific embodiment, as shown in Fig. 4 structure, electrochromic device 140 includes being sequentially located at substrate base
The first transparency conducting layer 142 on plate 141, electrochromic layer 143, ion conductive layer 144, ion storage 145 and second are saturating
Bright conductive layer 146.In order to realize the electrical connection between electrochromic device 140 and drive circuit 170, shown in Fig. 5 structure, first
Transparency conducting layer 142 and the second transparency conducting layer 146 all electrically connect with drive circuit 170.
Further, as shown in Fig. 5 structure, when above-mentioned backlight module 100 is in running order, in electrochromic device 140
The negative or positive electrode of the first transparency conducting layer 142 and drive circuit 170 can realize electrically connecting by the first control line 190, the
The negative pole with drive circuit 170 of two transparency conducting layer 146 correspondences or positive pole can realize electrically connecting by the second control line 191,
And is connected the output voltage regulating drive circuit 170, drive circuit by signal between controller 180 with drive circuit 170
170 apply different voltage to electrochromic device 140, and to form different electric fields, the electric field formed by different voltages is made
For electrochromic layer 143, ion conductive layer 144 and ion storage 145, make electrochromic layer 143 pellucidity and
Change between color state carrys out the transmitance of light regulating.
As shown in Fig. 2 structure, when electrochromic device 140 is arranged between reflector plate 130 and light guide plate 120, electroluminescent
Electrochromic device 140 is under the effect of different voltages, it is possible to by the change between pellucidity and colored state regulate from
The transmitance of the light of light guide plate 120 directive reflector plate 130, can also regulate simultaneously and reflect to light guide plate 120 from reflector plate 130
The transmitance of light, and then the amount of light of regulation light guide plate 120 light emission side, to control brightness and the intensity of light, thus
The low gray-scale intensity of backlight module 100 can be reduced.
As shown in Fig. 3 structure, above-mentioned electrochromic device 140 can be by being positioned at the first of electrochromic device 140 two ends
Control line 190 and the second control line 191 realize the electrical connection with drive circuit 170, and in like manner, drive circuit 170 can pass through signal
Line realizes being connected with the signal of controller 180.
Specifically, the transmitance of above-mentioned electrochromic device 140 is 20%～90%.
During the specific works of above-mentioned electrochromic device 140, transmitance can be 20%, 25%, 30%,
35%, 40%, 45%, 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90% etc..
In order to preferably control to be reflected towards the light penetration of light guide plate 120 from reflector plate 130, such as Fig. 2 and Fig. 3 structure institute
Showing, electrochromic device 140 is arranged between light guide plate 120 and reflector plate 130.In actual production process, electrochromism device
Part 140 can be arranged at the reflector plate 130 side towards light guide plate 120, is not limited to be arranged on light guide plate 120 and reflector plate
Between 130, it is also possible to be arranged between light guide plate 120 and optical film material 160, it is also possible to be arranged on optical film material 160 goes out light
Side, the effect that can reach according to specifically used situation and expection, electrochromic device 140 is arranged in backlight module 100
Any can be with the position of light regulating transmitance, to regulate light luminance and the intensity of light emission side.
Further, when electrochromic device 140 is arranged between light guide plate 120 and reflector plate 130, for side
Just manufacturing and assemble, electrochromic device 140 can be adhered to reflector plate 130, e.g., by the underlay substrate of electrochromic device 140
141 are adhered to the reflector plate 130 side towards light guide plate 120；Further, during assembling, in order to reduce adhesive
Impact on light, electrochromic device 140 can be adhered to reflector plate 130 by transparent adhesive.
Drive circuit 170 is set for convenience and for making electrochromic device 140 and drive circuit 170 realize being electrically connected
The first control line 190 and the second control line 191 connect, makes the electrochromic device 140 projected area on light guide plate 120 be less than
The reflector plate 130 projected area on light guide plate 120, as shown in Fig. 3 structure, the electrochromic device 140 of reflector plate 130 end face
Both sides arrange control line 190, and also can be arranged on control line 190 by drive circuit 170.
Due to LED light source have that volume is little, voltage is low, length in service life, brightness high and low in calories, therefore, on
State the preferred LED light source of the light source in backlight module 100.
It addition, the embodiment of the present invention additionally provides a kind of display device, this display device includes display floater and as above
State any one backlight module 100 that embodiment provides.This display device can be liquid crystal indicator.
Obviously, those skilled in the art can carry out various change and modification without deviating from this to the embodiment of the present invention
Bright spirit and scope.So, if these amendments of the present invention and modification belong to the claims in the present invention and equivalent technologies thereof
Within the scope of, then the present invention is also intended to comprise these change and modification.
Claims (10)
1. a backlight module, the reflector plate being stacked with described light guide plate including light source, light guide plate electrically connects with described light source
Drive circuit and controller；Between described controller and drive circuit, signal is connected；
It is characterized in that,
Also include being arranged at described reflector plate towards described light guide plate side and the electrochromism that be arranged in parallel with described reflector plate
Device, electrically connects between described electrochromic device with described drive circuit.
Backlight module the most according to claim 1, it is characterised in that described electrochromic device includes being sequentially located at substrate
The first transparency conducting layer, electrochromic layer, ion conductive layer, ion storage and the second transparency conducting layer on substrate.
Backlight module the most according to claim 2, it is characterised in that described first transparency conducting layer and the second electrically conducting transparent
Layer all electrically connects with described drive circuit.
Backlight module the most according to claim 3, it is characterised in that described first transparency conducting layer is described by being arranged at
First control line of electrochromic device periphery electrically connects with described drive circuit；Described second transparency conducting layer is by being arranged at
Second control line of described electrochromic device periphery electrically connects with described drive circuit.
Backlight module the most according to claim 2, it is characterised in that the transmitance of described electrochromic device be 20%～
90%.
Backlight module the most according to claim 1, it is characterised in that described electrochromic device is arranged at described light guide plate
And between described reflector plate.
Backlight module the most according to claim 6, it is characterised in that described electrochromic device is adhered to described reflection
Sheet.
Backlight module the most according to claim 7, it is characterised in that described electrochromic device is glued by transparent adhesive
It is connected to described reflector plate.
Backlight module the most according to claim 1, it is characterised in that described electrochromic device is on described light guide plate
Projected area is less than described reflector plate projected area on described light guide plate.
10. a display device, including display floater, it is characterised in that also include the back of the body as described in any one of claim 1-9
Light module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610804233.6A CN106125404B (en) | 2016-09-05 | 2016-09-05 | Backlight module and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610804233.6A CN106125404B (en) | 2016-09-05 | 2016-09-05 | Backlight module and display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106125404A true CN106125404A (en) | 2016-11-16 |
| CN106125404B CN106125404B (en) | 2020-08-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610804233.6A Active CN106125404B (en) | 2016-09-05 | 2016-09-05 | Backlight module and display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106125404B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109557697A (en) * | 2018-12-25 | 2019-04-02 | 维沃移动通信有限公司 | A kind of vision-control method and terminal |
| WO2020228214A1 (en) * | 2019-05-14 | 2020-11-19 | 深圳市华星光电技术有限公司 | Liquid crystal display |
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| CN101713503A (en) * | 2008-10-07 | 2010-05-26 | 索尼株式会社 | Illuminating device, display device, and method of manufacturing light modulation element |
| CN102830521A (en) * | 2012-09-14 | 2012-12-19 | 京东方科技集团股份有限公司 | Display device and driving method thereof |
| CN102929037A (en) * | 2011-08-08 | 2013-02-13 | 索尼公司 | Display device, method of manufacturing same, and electronic apparatus |
| CN103033982A (en) * | 2011-10-05 | 2013-04-10 | 索尼公司 | Display unit |
| CN103851407A (en) * | 2012-11-28 | 2014-06-11 | 群康科技(深圳)有限公司 | Backlight module and liquid crystal display device |
| US8836888B2 (en) * | 2009-12-15 | 2014-09-16 | Gentex Corporation | Modular light source/electronics and automotive rearview assemblies using the same |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101713503A (en) * | 2008-10-07 | 2010-05-26 | 索尼株式会社 | Illuminating device, display device, and method of manufacturing light modulation element |
| US8836888B2 (en) * | 2009-12-15 | 2014-09-16 | Gentex Corporation | Modular light source/electronics and automotive rearview assemblies using the same |
| CN102929037A (en) * | 2011-08-08 | 2013-02-13 | 索尼公司 | Display device, method of manufacturing same, and electronic apparatus |
| CN103033982A (en) * | 2011-10-05 | 2013-04-10 | 索尼公司 | Display unit |
| CN102830521A (en) * | 2012-09-14 | 2012-12-19 | 京东方科技集团股份有限公司 | Display device and driving method thereof |
| CN103851407A (en) * | 2012-11-28 | 2014-06-11 | 群康科技(深圳)有限公司 | Backlight module and liquid crystal display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109557697A (en) * | 2018-12-25 | 2019-04-02 | 维沃移动通信有限公司 | A kind of vision-control method and terminal |
| CN109557697B (en) * | 2018-12-25 | 2021-06-15 | 维沃移动通信有限公司 | Display adjusting method and terminal |
| WO2020228214A1 (en) * | 2019-05-14 | 2020-11-19 | 深圳市华星光电技术有限公司 | Liquid crystal display |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106125404B (en) | 2020-08-11 |
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