CN205827019U - The switchable backlight module of colour gamut and liquid crystal display - Google Patents
The switchable backlight module of colour gamut and liquid crystal display Download PDFInfo
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- CN205827019U CN205827019U CN201620518313.0U CN201620518313U CN205827019U CN 205827019 U CN205827019 U CN 205827019U CN 201620518313 U CN201620518313 U CN 201620518313U CN 205827019 U CN205827019 U CN 205827019U
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Abstract
A kind of switchable backlight module of colour gamut and liquid crystal display, backlight module includes wide colour gamut light emitting diode, white light emitting diode and light guide plate, wide colour gamut light emitting diode and white light emitting diode are individually controlled by switch respectively, and wide colour gamut light emitting diode can be light emitting diode with quantum dots.By being respectively provided with light emitting diode with quantum dots light source and white light emitting diode light source in light guide plate both sides, when liquid crystal display needs to realize the display of wide colour gamut, wide colour gamut LED source can be switched to by controlling the switch of light emitting diode with quantum dots, when needs power saving, white light emitting diode light source can be switched to by controlling the switch of white light emitting diode.Owing to the useful luminous flux of white light emitting diode crosses high by nearly 20% than wide colour gamut light emitting diode of rate, when backlight module brightness is identical, can realize sending identical backlight illumination with wide colour gamut light emitting diode under relatively low power consumption, reach save electricity and do not affect the purpose of normal display.
Description
Technical field
This utility model relates to technical field of liquid crystal display, particularly to a kind of switchable backlight module of colour gamut and liquid crystal display.
Background technology
Liquid crystal display has the advantages such as slimming, lightweight, low power consumption, radiationless pollution, is widely used in display device now.Liquid crystal display generally comprises liquid crystal panel and backlight module, and liquid crystal panel itself is the most luminous, and backlight module need to be relied on luminous, and backlight module mainly includes light guide plate, diffuser plate, brightness enhancement film and luminous source.Backlight module is divided into straight-down negative and side-light type according to distribution of light sources position difference, and down straight aphototropism mode set is luminous source to be arranged in equably the rear of liquid crystal panel, makes light source can uniformly pass on whole screen；Sidelight type backlight module is luminous source to be evenly distributed on the edge of liquid crystal panel, then light guide plate of arranging in pairs or groups, allow light source luminescent time, the light transmission light guide plate launched from screen edge is transported to whole screen.
Along with liquid crystal display constantly towards gentlier, brighter, thinner direction develop, sidelight type backlight module has become current main flow.The most frequently used light source of sidelight type backlight module has LED-backlit.LED includes that wide colour gamut LED and white light LEDs, wide colour gamut LED can meet consumer's demand at the aspect such as multimedia projection and Entertainment, and energy consumption is bigger；White light LEDs can meet consumer in aspect demands such as word reads, and energy consumption is less.Available liquid crystal display typically uses single light source, it is impossible to realize the display of different colour gamut.Along with there is the highest requirement in consumer to the color representation of liquid crystal display, existing market main flow advocates low energy consumption simultaneously, it is thus desirable to provide the switchable liquid crystal display of a kind of colour gamut to meet the different demands of different consumer, the market trend of low energy consumption can be met simultaneously.
Utility model content
The purpose of this utility model is to provide a kind of switchable backlight module of colour gamut and liquid crystal display, cannot meet the problem that different colour gamut shows and energy consumption is higher solving available liquid crystal display.
This utility model provides a kind of switchable backlight module of colour gamut, described backlight module includes wide colour gamut light emitting diode, white light emitting diode and light guide plate, described wide colour gamut light emitting diode and described white light emitting diode are positioned at the lateral of described light guide plate, and described wide colour gamut light emitting diode and described white light emitting diode are individually controlled by switch respectively.
Further, described backlight module also includes that diffuser plate, brightness enhancement film and reflecting plate, wherein said brightness enhancement film and diffuser plate are positioned at above described light guide plate, and described reflecting plate is positioned at below described light guide plate.
Further, described wide colour gamut light emitting diode is light emitting diode with quantum dots, the light emitting diode using fluoride fluorescent material, uses one of them of light emitting diode of red green fluorescence powder.
Further, described wide colour gamut light emitting diode and described white light emitting diode are positioned at the homonymy of described light guide plate, offside or adjacent side.
Further, described wide colour gamut light emitting diode is light emitting diode with quantum dots, described light emitting diode with quantum dots includes quantum dot film and multiple blue-ray LEDs, described quantum dot film is strip and the side setting along described light guide plate, described quantum dot film is between the plurality of blue-ray LED and described light guide plate, and the light that the plurality of blue-ray LED sends reenters through described quantum dot film and is incident upon in described light guide plate.
Further, described wide colour gamut light emitting diode includes that multiple light emitting diode with quantum dots, each light emitting diode with quantum dots include quantum dot film and blue-ray LED, described quantum dot film setting corresponding with described blue-ray LED and being packaged as a whole.
Further, described wide colour gamut light emitting diode is light emitting diode with quantum dots, and described light emitting diode with quantum dots and described white light emitting diode are positioned at described light guide plate homonymy and are arranged alternately.
Further, each light emitting diode with quantum dots includes quantum dot film and blue-ray LED, described quantum dot film setting corresponding with described blue-ray LED and being packaged as a whole.
This utility model also provides for a kind of switchable liquid crystal display of colour gamut, and including backlight module be positioned at the liquid crystal panel above described backlight module, described backlight module is the switchable backlight module of colour gamut as above.
The liquid crystal display that this utility model provides, by being respectively provided with wide colour gamut light emitting diode with quantum dots light source and white light emitting diode light source in light guide plate both sides, and light emitting diode with quantum dots light source and white light emitting diode light source are respectively by independent on-off control, when liquid crystal display needs to realize the display of wide colour gamut, wide colour gamut LED source can be switched to by controlling the switch of light emitting diode with quantum dots, when needs power saving, white light emitting diode light source can be switched to by controlling the switch of white light emitting diode.Owing to the useful luminous flux of white light emitting diode crosses high by nearly 20% than wide colour gamut light emitting diode of rate, when backlight module brightness is identical, can realize sending identical backlight illumination with wide colour gamut light emitting diode under relatively low power consumption, reach save electricity and do not affect the purpose of normal display.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of liquid crystal display in this utility model first embodiment.
Fig. 2 is light guide plate and the distribution schematic diagram of light source in this utility model the second embodiment.
Fig. 3 is light guide plate and the distribution schematic diagram of light source in this utility model the 3rd embodiment.
Fig. 4 is light guide plate and the distribution schematic diagram of light source in this utility model the 4th embodiment.
Detailed description of the invention
By further illustrating the technical approach and effect that this utility model taked by reaching predetermined utility model purpose, below in conjunction with drawings and Examples, to detailed description of the invention of the present utility model, structure, feature and effect thereof, describe in detail as after.
Fig. 1 is the overall structure schematic diagram of liquid crystal display in this utility model first embodiment.Refer to Fig. 1, liquid crystal display includes backlight module 1 and the liquid crystal panel 2 that stacking arranges, and backlight module 1 includes light guide plate 11, diffuser plate 15, brightness enhancement film 16, reflecting plate 17, wide colour gamut light emitting diode 12 and white light emitting diode 13.Diffuser plate 15 and brightness enhancement film 16 are positioned at above light guide plate 11, and reflecting plate 17 is positioned at below light guide plate 11.Wide colour gamut light emitting diode 12 and white light emitting diode 13 are positioned at the lateral of light guide plate 11, and wide colour gamut light emitting diode 12 and white light emitting diode 13 are individually controlled by switch respectively.When needing to carry out the display that multimedia projection and amusement game etc. need high saturation color chroma, close white light emitting diode 13, individually open wide colour gamut light emitting diode 12；When needing to carry out the display that document reading etc. need not high saturation color chroma, close wide colour gamut light emitting diode 12, individually open white light emitting diode 13.
In embodiment of the present utility model, wide colour gamut light emitting diode 12 can be one of them in the light emitting diode of light emitting diode with quantum dots and wide colour gamut technology such as use fluoride fluorescent material, red green fluorescence powder etc..Quantum dot is a kind of semiconductor nanocrystal, and for atom and the aggregation of molecule, quantum dot can be made up of a kind of and more than one semi-conducting material；When lateral size of dots is at about 7nm, it can send the HONGGUANG of narrow wave-length coverage after being excited by blue-ray LED, and when lateral size of dots is about 3nm, it can send the green glow of narrow wave-length coverage after being excited by blue-ray LED.Wide colour gamut light emitting diode 12 and white light emitting diode 13 may be located at the homonymy of light guide plate 11, offside or adjacent side the situation of offside distribution (Fig. 1 show).
Fig. 2 is light guide plate and the distribution schematic diagram of light source in this utility model the second embodiment, refer to Fig. 2, in the present embodiment, wide colour gamut light emitting diode 12 is with white light emitting diode 13 respectively by individually switching (not shown) control, and wide colour gamut light emitting diode 12 and white light emitting diode 13 lay respectively at light guide plate 11 both sides (being i.e. distributed) in offside.In the present embodiment, wide colour gamut light emitting diode 12 is light emitting diode with quantum dots 14, light emitting diode with quantum dots 14 includes quantum dot film 141 and multiple blue-ray LEDs 142, quantum dot film 141 in strip and along light guide plate 11 side arrange, multiple blue-ray LEDs 142 are separate with quantum dot film 141 and are oppositely arranged, quantum dot film 141 is between multiple blue-ray LEDs 142 and light guide plate 11, and the light that all blue-ray LEDs 142 send reenters through quantum dot film 141 and is incident upon in light guide plate 11.Being provided with the quantum dot of different-grain diameter in quantum dot film 141, blue-ray LED 142 excites the quantum dot of different-grain diameter can send different coloured light.When light emitting diode with quantum dots 14 damage needs to change when, can individually blue-ray LED 142 or quantum dot film 141 be replaced.
Blue-ray LED 142 can send blue light, in excitation quantum point thin film 141, particle diameter is the HONGGUANG that the quantum dot emission of about 7nm goes out narrow wave-length coverage, and particle diameter is the green glow that the quantum dot emission of about 3nm goes out narrow wave-length coverage in excitation quantum point thin film 141, after HONGGUANG and green glow mixing, light emitting diode with quantum dots 14 is made to send the white light with preferable color saturation.When needs realize the display of wide colour gamut, by switching, the backlight of liquid crystal display can be switched to light emitting diode with quantum dots 14 (now white light emitting diode 13 is closed)；When need not the display of wide colour gamut, by switching, the backlight of liquid crystal display can be switched to white light emitting diode 13 (now light emitting diode with quantum dots 14 is closed).
Fig. 3 is light guide plate and the distribution schematic diagram of light source in this utility model the 3rd embodiment, refer to Fig. 3, in the present embodiment, wide colour gamut light emitting diode 12 is with white light emitting diode 13 respectively by individually switching (not shown) control, and wide colour gamut light emitting diode 12 and white light emitting diode 13 lay respectively at light guide plate 11 both sides (being i.e. distributed) in offside.In the present embodiment, wide colour gamut light emitting diode 12 is multiple light emitting diode with quantum dots 14, and each light emitting diode with quantum dots 14 includes quantum dot film 141 and blue-ray LED 142, quantum dot film 141 setting corresponding with blue-ray LED 142 and being packaged as a whole.Being provided with the quantum dot of different-grain diameter in quantum dot film 141, blue-ray LED 142 excites the quantum dot of different-grain diameter can send different coloured light.
Blue-ray LED 142 in each light emitting diode with quantum dots 14 can send blue light, the quantum dot emission that particle diameter is about 7nm in the quantum dot film 141 of this light emitting diode with quantum dots 14 is excited to go out narrow wave-length coverage HONGGUANG, and the quantum dot emission that particle diameter is about 3nm in excitation quantum point thin film 141 goes out after the green glow of narrow wave-length coverage, HONGGUANG and green glow mix to make this light emitting diode with quantum dots 14 send the white light with preferable color saturation.When needs realize the display of wide colour gamut, by switching, the backlight of liquid crystal display can be switched to light emitting diode with quantum dots 14 (now white light emitting diode 13 is closed)；When need not the display of wide colour gamut, by switching, the backlight of liquid crystal display can be switched to white light emitting diode 13 (now light emitting diode with quantum dots 14 is closed).
Fig. 4 is light guide plate and the distribution schematic diagram of light source in this utility model the 4th embodiment, refer to Fig. 4, in the present embodiment, wide colour gamut light emitting diode 12 is with white light emitting diode 13 respectively by individually switching (not shown) control, and wide colour gamut light emitting diode 12 is positioned at light guide plate 11 homonymy with white light emitting diode 13 and is arranged alternately.Specifically, wide colour gamut light emitting diode 12 and white light emitting diode 13 are arranged alternately along light guide plate 11 the same side and on the same line.In the present embodiment, wide colour gamut light emitting diode 12 is light emitting diode with quantum dots 14, each light emitting diode with quantum dots 14 includes quantum dot film 141 and blue-ray LED 142 (ginseng Fig. 3), quantum dot film 141 setting corresponding with blue-ray LED 142, being provided with the quantum dot of different-grain diameter in quantum dot film 141, blue-ray LED 142 excites the quantum dot of different-grain diameter can send different coloured light.The quantity of light emitting diode with quantum dots 14 and white light emitting diode 13 is multiple.
Blue-ray LED 142 in each light emitting diode with quantum dots 14 can send blue light, the quantum dot emission that particle diameter is about 7nm in the quantum dot film 141 of excitation quantum point luminescent diode 14 goes out narrow wave-length coverage HONGGUANG, and the quantum dot emission that particle diameter is about 3nm in the quantum dot film 141 of excitation quantum point luminescent diode 14 goes out after the green glow of narrow wave-length coverage, HONGGUANG and green glow mix to make this light emitting diode with quantum dots 14 send the white light with preferable color saturation.When needs realize the display of wide colour gamut, by switching, the backlight of liquid crystal display can be switched to light emitting diode with quantum dots 14 (now white light emitting diode 13 is closed)；When need not the display of wide colour gamut, by switching, the backlight of liquid crystal display can be switched to white light emitting diode 13 (now light emitting diode with quantum dots 14 is closed).
In this utility model in embodiment, wide colour gamut light emitting diode 12 and white light-emitting diodes 13 are except being disposed on the opposite sides (such as Fig. 1 to Fig. 3) of light guide plate 11, and it is simultaneously located at outside the same side (as shown in Figure 4) of light guide plate 11, L-shaped can also be disposed on two sides adjacent of light guide plate 11, i.e. arrange in adjacent side.
The backlight module that this utility model provides, by being respectively provided with wide colour gamut light emitting diode and white light emitting diode, and wide colour gamut light emitting diode and white light emitting diode are respectively by independent on-off control.When liquid crystal display needs to realize the display of wide colour gamut, can switch to individually open wide colour gamut LED source by controlling the switch of wide colour gamut light emitting diode；When needs power saving, can switch to individually open white light emitting diode light source by controlling the switch of white light emitting diode.Due to the useful luminous flux of white light emitting diode, to cross rate higher than wide colour gamut light emitting diode by nearly 20%, when backlight module brightness is identical, can realize sending identical backlight illumination with wide colour gamut light emitting diode under relatively low power consumption, reach save electricity and do not affect the purpose of normal display.
This utility model also provides for a kind of liquid crystal display, including backlight module 1 as above be positioned at the liquid crystal panel 2 above this backlight module.
In this article, term " includes ", " comprising " or its any other variant are intended to comprising of nonexcludability, except comprising those listed key elements, but also can comprise other key elements being not expressly set out.
In this article, the involved noun of locality such as forward and backward, upper and lower is to define with during parts are positioned at figure in accompanying drawing and parts position each other, is intended merely to the clear and convenient of expression technology scheme.Should be appreciated that the use of the described noun of locality should not limit the scope that the application is claimed.
In the case of not conflicting, the feature in embodiment herein-above set forth and embodiment can be combined with each other.
The foregoing is only preferred embodiment of the present utility model, not in order to limit utility model, all within spirit of the present utility model and principle, any modification, equivalent substitution and improvement etc. made, within should be included in protection domain of the present utility model.
Claims (9)
1. the switchable backlight module of a colour gamut (1), it is characterized in that, described backlight module (1) includes wide colour gamut light emitting diode (12), white light emitting diode (13) and light guide plate (11), described wide colour gamut light emitting diode (12) and described white light emitting diode (13) are positioned at the lateral of described light guide plate (11), described wide colour gamut light emitting diode (12) and described white light emitting diode (13) and are individually controlled by switch respectively.
2. the switchable backlight module of colour gamut (1) as claimed in claim 1, it is characterized in that, described backlight module (1) also includes diffuser plate (15), brightness enhancement film (16) and reflecting plate (17), wherein said brightness enhancement film (16) and diffuser plate (15) are positioned at described light guide plate (11) top, and described reflecting plate (17) is positioned at described light guide plate (11) lower section.
3. the switchable backlight module of colour gamut (1) as claimed in claim 1, it is characterized in that, described wide colour gamut light emitting diode (12) is light emitting diode with quantum dots (14), the light emitting diode using fluoride fluorescent material, uses one of them of light emitting diode of red green fluorescence powder.
4. the switchable backlight module of colour gamut (1) as claimed in claim 1, it is characterized in that, described wide colour gamut light emitting diode (12) and described white light emitting diode (13) are positioned at the homonymy of described light guide plate (11), offside or adjacent side.
5. the switchable backlight module of colour gamut (1) as claimed in claim 1, it is characterized in that, described wide colour gamut light emitting diode (12) is light emitting diode with quantum dots (14), described light emitting diode with quantum dots (14) includes quantum dot film (141) and multiple blue-ray LEDs (142), described quantum dot film (141) in strip and along described light guide plate (11) side arrange, described quantum dot film (141) is positioned between the plurality of blue-ray LED (142) and described light guide plate (11), the light that the plurality of blue-ray LED (142) sends reenters through described quantum dot film (141) and is incident upon in described light guide plate (11).
6. the switchable backlight module of colour gamut (1) as claimed in claim 1, it is characterized in that, described wide colour gamut light emitting diode (12) is multiple light emitting diode with quantum dots (14), each described light emitting diode with quantum dots (14) includes quantum dot film (141) and blue-ray LED (142), described quantum dot film (141) and described blue-ray LED (142) corresponding setting and be packaged as a whole.
7. the switchable backlight module of colour gamut (1) as claimed in claim 1, it is characterized in that, described wide colour gamut light emitting diode (12) is light emitting diode with quantum dots (14), and described light emitting diode with quantum dots (14) is positioned at described light guide plate (11) homonymy with described white light emitting diode (13) and is arranged alternately.
8. the switchable backlight module of colour gamut (1) as claimed in claim 7, it is characterized in that, each light emitting diode with quantum dots (14) includes quantum dot film (141) and blue-ray LED (142), described quantum dot film (141) and described blue-ray LED (142) corresponding setting and be packaged as a whole.
9. the switchable liquid crystal display of colour gamut, including backlight module (1) and be positioned at described backlight module (1) top liquid crystal panel (2), it is characterized in that, described backlight module (1) is the switchable backlight module of the colour gamut described in any one of claim 1 to 8 (1).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620518313.0U CN205827019U (en) | 2016-05-31 | 2016-05-31 | The switchable backlight module of colour gamut and liquid crystal display |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620518313.0U CN205827019U (en) | 2016-05-31 | 2016-05-31 | The switchable backlight module of colour gamut and liquid crystal display |
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| CN205827019U true CN205827019U (en) | 2016-12-21 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108153055A (en) * | 2018-01-08 | 2018-06-12 | 昆山龙腾光电有限公司 | Backlight module and liquid crystal display |
| CN109031780A (en) * | 2018-07-26 | 2018-12-18 | 武汉华星光电技术有限公司 | Backlight module, display device and its LED light source group switching method |
| CN114545679A (en) * | 2020-11-25 | 2022-05-27 | 海信视像科技股份有限公司 | Display device |
| CN116841087A (en) * | 2023-08-30 | 2023-10-03 | 惠科股份有限公司 | Backlight module and display device |
-
2016
- 2016-05-31 CN CN201620518313.0U patent/CN205827019U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108153055A (en) * | 2018-01-08 | 2018-06-12 | 昆山龙腾光电有限公司 | Backlight module and liquid crystal display |
| CN108153055B (en) * | 2018-01-08 | 2020-08-04 | 昆山龙腾光电股份有限公司 | Backlight module and liquid crystal display |
| CN109031780A (en) * | 2018-07-26 | 2018-12-18 | 武汉华星光电技术有限公司 | Backlight module, display device and its LED light source group switching method |
| US10788702B2 (en) | 2018-07-26 | 2020-09-29 | Wuhan China Star Optoelectronics Technology Co., Ltd. | Backlight module and method of switching LED light source groups |
| CN114545679A (en) * | 2020-11-25 | 2022-05-27 | 海信视像科技股份有限公司 | Display device |
| CN116841087A (en) * | 2023-08-30 | 2023-10-03 | 惠科股份有限公司 | Backlight module and display device |
| CN116841087B (en) * | 2023-08-30 | 2023-12-22 | 惠科股份有限公司 | Backlight module and display device |
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Address after: 215301, 1, Longteng Road, Kunshan, Jiangsu, Suzhou Patentee after: Kunshan Longteng Au Optronics Co Address before: 215301, 1, Longteng Road, Kunshan, Jiangsu, Suzhou Patentee before: Kunshan Longteng Optronics Co., Ltd. |