CN105301836A - Direct-lit type backlight module and display device - Google Patents
Direct-lit type backlight module and display device Download PDFInfo
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- CN105301836A CN105301836A CN201510761570.7A CN201510761570A CN105301836A CN 105301836 A CN105301836 A CN 105301836A CN 201510761570 A CN201510761570 A CN 201510761570A CN 105301836 A CN105301836 A CN 105301836A
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- backlight
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- light
- quantum dot
- backlight module
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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
-
- 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
- G02F1/133603—Direct backlight with LEDs
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/3406—Control of illumination source
-
- 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
- G02F1/133614—Illuminating devices using photoluminescence, e.g. phosphors illuminated by UV or blue light
Abstract
The invention provides a direct-lit type backlight module and a display device. The direct-lit type backlight module comprises a substrate, multiple backlight sources arranged on the substrate and quantum dot membranes located above the backlight sources; the backlight sources are used for emitting blue light so that the quantum dot membranes can be activated to generate red and green excited light; power of backlight sources, located in the peripheral marginal areas, of the multiple backlight sources is smaller than that of backlight sources, located in the middle area, of the multiple backlight sources. According to the direct-lit type backlight module and the display device, no blue edge exists in the peripheral marginal areas of the backlight module.
Description
Technical field
The present invention relates to display technique field, particularly relate to a kind of down straight aphototropism mode set and display device.
Background technology
Along with the development of display technique, liquid crystal indicator is widely used.Liquid crystal indicator is made up of liquid crystal panel, institutional framework, optics and some circuit boards etc.Because liquid crystal itself is not luminous, need to configure some backlights and just can demonstrate picture.Wherein, backlight module is used for the backlight for liquid crystal indicator provides brightness and is evenly distributed, and makes the normal display frame of liquid crystal indicator energy.
Backlight module can be divided into side entrance back module and down straight aphototropism mode set according to light source entrance positions difference, wherein, down straight aphototropism mode set refers to that light source is as light emitting diode (LightEmittingDiode, be called for short LED) to place at the back array of backlight module, the blooming piece such as light therethrough light guide plate, brightening piece sent forms equally distributed backlight.Side entrance back module refers to the side of light source at backlight module, light to light guide plate, by changing into equally distributed backlight after light guide plate and blooming piece.
At present, adopt technology of quantum dots can realize 100% (U.S.) NTSC (NationalTelevisionStandardsCommittee, be called for short NTSC) high colour gamut scheme, and adopt technology of quantum dots to have two kinds of implementations: quantum Manifold technology and quantum membrane technology.Wherein, quantum membrane technology sends ruddiness and green glow by red in blue-light excited quantum film and green quantum dot, and then carry out mixing with blue light and produce white light.But blue limit can be there is at backlight module edge, affect display effect.
Summary of the invention
The invention provides a kind of down straight aphototropism mode set and display device, blue limit can be there is to overcome in prior art at backlight module edge, affect the problem of display effect.
First aspect, the invention provides a kind of down straight aphototropism mode set, comprising:
Substrate, the multiple backlights be located on substrate, be positioned at quantum dot film above backlight;
Wherein, backlight is used for sending blue light, produces red and green energized light with excitation quantum point film;
The power being arranged in the backlight in region, edge in multiple backlight is less than the power that multiple backlight is positioned at the backlight of zone line.
Second aspect, the invention provides a kind of display device, comprising:
Down straight aphototropism mode set as described in first aspect and display panel;
Wherein, display panel is arranged at above down straight aphototropism mode set.
Down straight aphototropism mode set provided by the invention and display device, the power being arranged in the backlight in region, edge in multiple backlight is less than the power that multiple backlight is positioned at the backlight of zone line, namely the backlight being positioned at region, edge is taked to the backlight of smaller power, and to being positioned at the backlight of zone line, choose the backlight of the power being greater than the backlight being positioned at region, edge, compared with prior art, even if fringe region receives the green glow of reflection and ruddiness is less, because the backlight being positioned at region, edge is less, therefore the problem that mixed white light is partially blue can not be there is, avoid in prior art and can there is blue limit at backlight module edge, affect the problem of display effect.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is that the light of down straight aphototropism mode set moves towards schematic diagram;
Fig. 2 is the structural representation of down straight aphototropism mode set one embodiment of the present invention;
Fig. 3 is the structural representation of another embodiment of down straight aphototropism mode set of the present invention;
Fig. 4 is the structural representation of display device one embodiment of the present invention.
Embodiment
For making the object of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
The liquid crystal display utilizing quantum dot membrane technology to provide backlight, blue limit problem is there is in order to solve fringe region, inventor's initial analysis is thought, owing to occurring under the power same case of blue-light source that colour cast problem immediate cause is, in quantum dot film, quanta point material proportioning is uneven causes, if that is: zone line be pure white and peripheral regions deflection blue time, necessarily the quanta point material proportioning of quantum dot film zone line is mated with blue ray better, and quanta point material proportioning is on the low side in peripheral regions quantum dot film, cause peripheral regions blue ray composition on the high side and cause peripheral regions partially blue, therefore, the proportioning that inventor continues the quanta point material analyzing each region in quantum dot film finds, in quantum dot film, quanta point material proportioning is very even, there are not the problems referred to above.
For another example in the phenomenon of above-mentioned blue limit, zone line be pure white and peripheral regions deflection blue time, inventor thinks also may have relation by this fringe region light leak.If have gap between fringe region quantum dot film and edge seal structure, part light is directly transmitted to the optical texture of upper strata from this gap without quantum dot film, make this fractional transmission blue light present blue limit phenomenon, further analysis & verification learns that also not this reason causes blue limit phenomenon.Therefore, when eliminating in quantum dot film quantum dot arrangement homogeneity, blue-light LED chip luminous power consistance, and outside the factor such as blue light leak, by a large amount of retrieval analysis, also do not find the technical literature reference solving this technical matters, inventor gets into a difficult position to this problem producing cause.
Final inventor is through lot of experiments and analyze discovery, the blue light leak reason of fringe region of down straight aphototropism mode set, as follows:
First, the principle of luminosity of backlight module be by LED chip send blue-light excited go out green glow in quantum blooming become white light with ruddiness with the blue light of transmission quantum optics film.
The zone line of backlight module forms white light, a part is that the blue light exciting green glow and ruddiness to send with it by LED chip forms, and another part is that other LED chips inspire the blue light that green glow and ruddiness sends through the LED chip that substrate reflexes to zone line and this zone line and form.Fig. 1 is that the light of down straight aphototropism mode set moves towards schematic diagram, as shown in Figure 1, zone line receives when can blend together white light and excites retroreflection green glow and ruddiness from surrounding blue LED die, but, in region, edge, the blue-light LED chip received near zone line side excites retroreflection green glow and ruddiness only, like this, edge areas accept will lack to retroreflection green glow zone line relative to ruddiness, but, the blue light ingredient of identical blue-light LED chip transmission is identical, two LED chip places as being positioned at edge in Fig. 1 can receive reflect green light zone line relative to ruddiness and will lack, blue component is more on the high side, therefore, after the mixed light of region, edge, white light is partially blue.
Because in quantum optics film, the quanta point material of fringe region and zone line is even proportioning, edge region receive the green glow of reflection and ruddiness less time, the blue light ingredient sent due to LED chip is identical, therefore fringe region blue light proportioning can be caused higher, namely partially blue, people is for solving the problem in invention, take the proportioning reducing fringe region blue component, specifically partially low power blue LED die is taked in the region, edge of backlight module in the present invention, zone line takes partially high-power blue LED die, like this, on the one hand, zone line higher power blue LED chip excites and reflexes to the more green glow in marginarium and ruddiness, relatively improve fringe region green glow and red color light component, on the other hand, because edge takes lower-wattage blue LED die transmitting blue light less, the blue light in further transmission edge region is also relatively few, therefore, relatively, improve in edge region and receive retroreflection green glow and red color light component and reduce transmit blue composition, green glow and ruddiness and blueness are tended to balance, even if fringe region receives the green glow of reflection and ruddiness is less, also the problem that mixed white light is partially blue can not be there is.
The down straight aphototropism mode set of the embodiment of the present invention can be applied in display device, and the phenomenon that can there is blue limit mainly for backlight module edge is improved.
With embodiment particularly, technical scheme of the present invention is described in detail below.These specific embodiments can be combined with each other below, may repeat no more for same or analogous concept or process in some embodiment.
Fig. 2 is the structural representation of down straight aphototropism mode set one embodiment of the present invention.As shown in Figure 2, the down straight aphototropism mode set 10 of the present embodiment, comprising:
Substrate 1, the multiple backlights 2 be located on described substrate, be positioned at quantum dot film 3 above backlight, substrate can be the backboard of backlight module, can be printed circuit board, can also be other structures for arranging backlight.
Wherein, backlight 2, for sending blue light, produces red and green energized light with excitation quantum point film 3;
The power being arranged in the backlight 2 in region, edge in multiple backlight 2 is less than the power that multiple backlight 2 is positioned at the backlight 2 of zone line.
Wherein, in actual applications, backlight can be LED chip.
The down straight aphototropism mode set that the present embodiment provides, the power being arranged in the backlight in region, edge in multiple backlight is less than the power that multiple backlight is positioned at the backlight of zone line, namely the backlight being positioned at region, edge is taked to the backlight of smaller power, and to being positioned at the backlight of zone line, choose the backlight of the power being greater than the backlight being positioned at region, edge, compared with prior art, even if fringe region receives the green glow of reflection and ruddiness is less, because the backlight being positioned at region, edge is less, therefore the problem that mixed white light is partially blue can not be there is, avoid in prior art and can there is blue limit at backlight module edge, affect the problem of display effect.
Fig. 3 is the structural representation of another embodiment of down straight aphototropism mode set of the present invention.On the basis of the embodiment shown in Fig. 2, further, in actual applications, the abundant scattering of the light sent to make backlight, realizes softer, uniform radiation response, and the down straight aphototropism mode set 10 of the present embodiment, can also comprise:
Diffuser plate 4;
Wherein, diffuser plate 4 is arranged between quantum dot film 3 and substrate 1.
In order to increase luminescence efficiency, in actual applications, as the enforceable mode of one, down straight aphototropism mode set 10, can also comprise:
Brightness enhancement film 5;
Wherein, brightness enhancement film 5 is arranged at above quantum dot film 3.
Specifically, arrange in surface the abundant scattering of light that diffuser plate 4 can make backlight send, the light sent like this is softer, even, and radiation response is better.
Further, brightness enhancement film 5 can be adopted in the present invention to increase luminescence efficiency.
Fig. 4 is the structural representation of display device one embodiment of the present invention.As shown in Figure 4, the display device of the present embodiment, comprising:
Down straight aphototropism mode set 10 as shown in Figure 1-Figure 3 according to any one of embodiment and display panel 11;
Wherein, display panel 11 is arranged at above down straight aphototropism mode set 10.
In actual applications, display panel can be thin film transistor LCD device (LiquidCrystalDisplay is called for short LCD).
It should be noted that, for display device embodiment, because it is substantially corresponding to down straight aphototropism mode set embodiment, so relevant part illustrates see the part of down straight aphototropism mode set embodiment.
Last it is noted that above each embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to foregoing embodiments to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein some or all of technical characteristic; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.
Claims (6)
1. a down straight aphototropism mode set, is characterized in that, comprising:
Substrate, the multiple backlights be located on described substrate, be positioned at quantum dot film above described backlight;
Wherein, described backlight is used for sending blue light, produces red and green energized light to excite described quantum dot film;
The power being arranged in the backlight in region, edge in described multiple backlight is less than the power that described multiple backlight is positioned at the backlight of zone line.
2. backlight module according to claim 1, is characterized in that, also comprises:
Diffuser plate;
Wherein, described diffuser plate is arranged between described quantum dot film and described substrate.
3. backlight module according to claim 1 and 2, is characterized in that, also comprises:
Brightness enhancement film;
Wherein, described brightness enhancement film is arranged at above described quantum dot film.
4. backlight module according to claim 1 and 2, is characterized in that, described backlight is LED chip.
5. a display device, is characterized in that, comprising:
Down straight aphototropism mode set as described in any one of claim 1-4 and display panel;
Wherein, described display panel is arranged at above described down straight aphototropism mode set.
6. display device according to claim 5, is characterized in that, described display panel is thin film transistor LCD device LCD.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510761570.7A CN105301836A (en) | 2015-11-10 | 2015-11-10 | Direct-lit type backlight module and display device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510761570.7A CN105301836A (en) | 2015-11-10 | 2015-11-10 | Direct-lit type backlight module and display device |
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| CN105301836A true CN105301836A (en) | 2016-02-03 |
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| CN201510761570.7A Pending CN105301836A (en) | 2015-11-10 | 2015-11-10 | Direct-lit type backlight module and display device |
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Cited By (13)
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| CN105739176A (en) * | 2016-03-18 | 2016-07-06 | 纳晶科技股份有限公司 | Backlight module and display device |
| CN106205506A (en) * | 2016-08-29 | 2016-12-07 | 青岛海信电器股份有限公司 | Reduce method and the liquid crystal indicator of liquid crystal display edge colour cast |
| CN109407409A (en) * | 2019-01-08 | 2019-03-01 | 京东方科技集团股份有限公司 | Backlight module and preparation method thereof, display device |
| CN109491143A (en) * | 2018-12-21 | 2019-03-19 | 厦门天马微电子有限公司 | Backlight module and display device |
| CN109521604A (en) * | 2018-12-21 | 2019-03-26 | 厦门天马微电子有限公司 | A kind of backlight module and display device |
| CN109686240A (en) * | 2019-01-04 | 2019-04-26 | 京东方科技集团股份有限公司 | A kind of down straight aphototropism mode set and display device |
| CN110133907A (en) * | 2019-04-02 | 2019-08-16 | 深圳康佳电子科技有限公司 | A kind of Mini-LED backlight module, display screen and TV |
| WO2020164183A1 (en) * | 2019-02-11 | 2020-08-20 | 深圳扑浪创新科技有限公司 | Backlight module, display apparatus, driving method for display apparatus, and electronic device and computer-readable storage medium |
| CN112259053A (en) * | 2020-11-05 | 2021-01-22 | 上海摩软通讯技术有限公司 | Display method and display device |
| WO2021232493A1 (en) * | 2020-05-19 | 2021-11-25 | Tcl华星光电技术有限公司 | Flexible color filter film and method for manufacturing same, and full-color micro light-emitting diode device |
| WO2022001459A1 (en) * | 2020-06-29 | 2022-01-06 | 京东方科技集团股份有限公司 | Backlight module and display device |
| CN116088226A (en) * | 2023-04-10 | 2023-05-09 | 永林电子股份有限公司 | LED backlight unit and direct type backlight plate with same |
| CN116092439A (en) * | 2023-04-10 | 2023-05-09 | 惠科股份有限公司 | Liquid crystal display device and electronic apparatus |
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Application publication date: 20160203 |