CN103698937B - Display device and backlight module thereof - Google Patents
Display device and backlight module thereof Download PDFInfo
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- CN103698937B CN103698937B CN201310645915.3A CN201310645915A CN103698937B CN 103698937 B CN103698937 B CN 103698937B CN 201310645915 A CN201310645915 A CN 201310645915A CN 103698937 B CN103698937 B CN 103698937B
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Abstract
The invention provides a kind of display device, it comprises display floater and backlight module. Display floater has and effectively shows border. Backlight module comprises framework, light guide plate, blue light source and quantum dot enhanced film. Framework has support portion, and display floater is arranged on support portion, and effectively shows that border and support portion are at a distance of the first preset distance. Light guide plate is arranged in framework, and light guide plate is positioned at below support portion. Blue light source is arranged in framework and is positioned at the side of light guide plate. Quantum dot enhanced film is arranged on light guide plate, and quantum dot enhanced film is predetermined length beyond the distance on effectively display border, and predetermined length is more than the first preset distance, so that support portion and quantum dot enhanced film partly overlap.
Description
Technical field
The present invention, about a kind of display device and backlight module thereof, espespecially a kind of is prevented effectively from the display device and backlight module thereof that produce light leakage phenomena.
Background technology
Due to liquid crystal indicator have slimming, lightweight, low power consumption, radiationless pollution and can be compatible with manufacture of semiconductor technology etc. advantage, liquid crystal indicator has been widely used in electronic installation miscellaneous, for instance notebook computer, mobile phone, digital still camera, personal digital assistant etc. Liquid crystal indicator provides light to display floater by backlight module, to show picture. It is said that in general, backlight module is generally of light source and optical film combination. Light source is in order to provide light, and optical film combination is then in order to improve the optical characteristics of light. The blooming piece that optical film combination comprises is such as prismatic lens, diffusion sheet etc.
The light source of the backlight module being presently used for liquid crystal indicator is main with Cold Cathode Fluorescent fluorescent tube (ColdCathodeFluorescentLamp, CCFL) and light-emittingdiode (LightEmittingDiode, LED). Owing to volume and the power consumption of LED are less than CCFL, can accomplishing slimming product design, preferably, and without mercury pollution, therefore LED has the trend replacing CCFL gradually to color saturation. Additionally, existing manufacturer develops quantum dot enhanced film (QuantumDotEnhancementFilm, QDEF) at present, it is used for coordinating with blue-ray LED, to strengthen light source color rendering and wide colour gamut usefulness. Quantum dot enhanced film is that tool is by two kinds of different size of phosphor particles, by these two kinds of phosphor particles of blue light illumination to excite generation HONGGUANG and green glow, add some blue light and can penetrate quantum dot enhanced film, to make HONGGUANG, green glow and blue light blend together white light in quantum dot enhanced film opposite side. But, if the blue light that sends of blue-ray LED cannot excitation quantum point enhanced film completely, light leakage phenomena will be produced at the effectively display boundary of display floater, and then affect the perception of user.
Summary of the invention
It is an object of the invention to provide a kind of display device and backlight module thereof being prevented effectively from and producing light leakage phenomena, to solve the problems referred to above.
The display device of the present invention comprises display floater and backlight module.Display floater has and effectively shows border. Backlight module comprises framework, light guide plate, blue light source and quantum dot enhanced film. Framework has support portion, and display floater is arranged on support portion, and effectively shows that border and support portion are at a distance of the first preset distance. Light guide plate is arranged in framework, and light guide plate is positioned at below support portion. Blue light source is arranged in framework and is positioned at the side of light guide plate. Quantum dot enhanced film is arranged on light guide plate, and quantum dot enhanced film is predetermined length beyond the distance on effectively display border, and predetermined length is more than the first preset distance, so that support portion and quantum dot enhanced film partly overlap.
It is also preferred that the left in described display device, the upper surface of this display floater and this quantum dot enhanced film are apart the second preset distance, and this display floater has effective visual angle, this first preset distance calculates with following equation and obtains: L1=L2*cot ��; Wherein, L1 represents this first preset distance, and L2 represents this second preset distance, and �� represents this effective visual angle.
It is also preferred that the left in described display device, this backlight module separately comprises reflector plate, this reflector plate is arranged under this light guide plate.
It is also preferred that the left in described display device, the edge of this quantum dot enhanced film is blocked in this support portion.
It is also preferred that the left in described display device, this blue light source through this quantum dot enhanced film, blendes together white light in this quantum dot enhanced film towards the side of this display floater.
Preferably, in described display device, this display floater has territory, effective display area, and the surrounding of this display floater has black light shield layer, this territory, effective display area is in the region in this black light shield layer, and this effectively shows that border corresponds to the border in this territory, effective display area.
Present invention also offers a kind of backlight module, this backlight module comprises framework, light guide plate, blue light source and quantum dot enhanced film. Framework has support portion. Light guide plate is arranged in framework, and light guide plate is positioned at below support portion. Blue light source is arranged in framework and is positioned at the side of light guide plate. Quantum dot enhanced film is arranged on light guide plate, and the edge of quantum dot enhanced film is between support portion and light guide plate, so that support portion and quantum dot enhanced film partly overlap.
It is also preferred that the left in described backlight module, this backlight module separately comprises reflector plate, this reflector plate is arranged under this light guide plate.
It is also preferred that the left in described backlight module, the edge of this light guide plate is positioned at below this support portion, and the edge of this quantum dot enhanced film is blocked in this support portion.
It is also preferred that the left in described backlight module, the light that this blue light source sends is directed to this quantum dot enhanced film through this light guide plate so that this this quantum dot enhanced film is excited.
Compared with prior art, the present invention makes quantum dot enhanced film beyond the length on effectively display border more than the distance effectively showing between border and support portion, so that the support portion of framework and quantum dot enhanced film partly overlap. The blue light that one blue light source sends when light guide plate guides and sends towards the direction of display floater, can complete excitation quantum point enhanced film, and then avoid the effectively display boundary at display floater to produce light leakage phenomena.
Accompanying drawing explanation
Fig. 1 is the partial schematic diagram of the display device of one embodiment of the invention.
Detailed description of the invention
For making the purpose of the present invention, structure, feature and function thereof are had further understanding, hereby embodiment is coordinated to describe in detail as follows.
Refer to the partial schematic diagram of the display device 1 that Fig. 1, Fig. 1 are one embodiment of the invention. As it is shown in figure 1, display device 1 comprises display floater 10 and backlight module 12. In this embodiment, display device 1 can be liquid crystal indicator, and display floater 10 can be display panels, but is not limited. Display floater 10 has territory, effective display area 100, and this territory, effective display area 100 has effectively display border 1000. Generally speaking, display floater 10 be formed around black light shield layer (BlackMatrix, BM), namely territory, effective display area 100 is in the region in black light shield layer, also can showing that word sees, with image, the region looked for user, effectively display border 1000 is the border in this region.
Backlight module 12 comprises framework 120, light guide plate 122, blue light source 124, quantum dot enhanced film 126 and reflector plate 128. Framework 120 has support portion 1200, and display floater 10 is arranged on support portion 1200. In this embodiment, framework 120 can be glue frame, but is not limited. Light guide plate 122 is arranged in framework 120, and the peripheral part of light guide plate 122 is positioned at below support portion 1200. Blue light source 124 is arranged in framework 120 and is positioned at the side of light guide plate 122, in order to send blue light. In this embodiment, blue light source 124 can be blue light emitting diode, but is not limited. Quantum dot enhanced film 126 is arranged on light guide plate 122, and reflector plate 128 is arranged at light guide plate 122 times.
In practical application, light guide plate 122 is formed with diffusion point (dotpattern) or other interference structure so that after the blue light that blue light source 124 sends enters light guide plate 122, can uniformly be spread and send towards the direction of display floater 10. Part veiling glare can be reflected by reflector plate 128, to increase the light extraction efficiency of entirety. Additionally, generally can be provided above optical film combination at light guide plate 122, in order to improve the optical characteristics of light, the blooming piece that wherein optical film combination comprises is such as prismatic lens, diffusion sheet etc., depending on practical application.
In this embodiment, quantum dot enhanced film 126 is used for coordinating with blue light source 124, to strengthen light source color rendering and wide colour gamut usefulness. Quantum dot enhanced film 126 is that tool is by two kinds of different size of phosphor particles, by these two kinds of phosphor particles of blue light illumination to excite generation HONGGUANG and green glow, add some blue light and can penetrate quantum dot enhanced film, to make HONGGUANG, green glow and blue light blend together white light in quantum dot enhanced film 126 opposite side.
As shown in Figure 1, the effectively display border 1000 in the territory, effective display area 100 of display floater 10 is apart the first preset distance D1 with the support portion 1200 of framework 120, and quantum dot enhanced film 126 is predetermined length L beyond the distance effectively showing border 1000 in territory, effective display area 100. The present invention makes predetermined length L more than the first preset distance D1 so that support portion 1200 and the quantum dot enhanced film 126 of framework 120 partly overlap, that is, make framework 120 block the edge of this quantum dot enhanced film. In other words, the edge of quantum dot enhanced film 126 is between the support portion 1200 and light guide plate 122 of framework 120. The blue light that blue light source 124 sends through light guide plate 122 guide the direction towards display floater 10 send time, can complete excitation quantum point enhanced film 126, and then avoid territory, effective display area 100 periphery at display floater 10 to produce light leakage phenomena.
In this embodiment, upper surface 102 and the quantum dot enhanced film 126 of display floater 10 are apart the second preset distance D2, and display floater 10 has effective view angle theta. Effective view angle theta is display floater 10 and is available for users to see the angle looked, and is typically about 45 degree, but is not limited, depending on practical application. Coordinating effective view angle theta, the first preset distance D1 can obtain in following equation one calculating.
Formula one: D1=D2*cot ��. That is, the first preset distance D1 is multiplied by the second preset distance D2 equal to the cotangent of effective view angle theta.
In other words, the first preset distance D1 between the support portion 1200 of effectively display border 1000 and the framework 120 in the territory, effective display area 100 of display floater 10 can set according to effective view angle theta of the second preset distance D2 between the upper surface 102 of display floater 10 and quantum dot enhanced film 126 Yu display floater 10. After the first preset distance D1 determines, as long as making quantum dot enhanced film 126 beyond the predetermined length L effectively showing border 1000 in territory, effective display area 100 more than the first preset distance D1, the support portion 1200 of framework 120 can be made to partly overlap with quantum dot enhanced film 126.
In sum, the present invention makes quantum dot enhanced film beyond the length on effectively display border more than the distance effectively showing between border and support portion, so that the support portion of framework and quantum dot enhanced film partly overlap. The blue light that blue light source sends when light guide plate guides and sends towards the direction of display floater, can complete excitation quantum point enhanced film, and then avoid the effectively display boundary perimeter at display floater to produce light leakage phenomena.
The present invention is been described by by above-mentioned related embodiment, but above-described embodiment is only the example implementing the present invention. It must be noted that, the embodiment disclosed is not limiting as the scope of the present invention. On the contrary, the change made without departing from the spirit and scope of the present invention and retouching, all belong to the scope of patent protection of the present invention.
Claims (10)
1. a display device, it is characterised in that comprise:
Display floater, has and effectively shows border; And
Backlight module, comprises:
Framework, has support portion, and this display floater is arranged on this support portion, and this effectively shows that border and this support portion are at a distance of the first preset distance;
Light guide plate, is arranged in this framework, and this light guide plate is positioned at below this support portion;
Blue light source, is arranged in this framework and is positioned at the side of this light guide plate; And
Quantum dot enhanced film, it is arranged on this light guide plate, this quantum dot enhanced film effectively shows that beyond this distance on border is predetermined length, this predetermined length is more than this first preset distance, so that this support portion and this quantum dot enhanced film partly overlap, it is to avoid this effective display boundary at this display floater produces light leak.
2. display device as claimed in claim 1, it is characterised in that the upper surface of this display floater and this quantum dot enhanced film are apart the second preset distance, and this display floater has effective visual angle, this first preset distance calculates with following equation and obtains:
L1=L2*cot ��;
Wherein, L1 represents this first preset distance, and L2 represents this second preset distance, and �� represents this effective visual angle.
3. display device as claimed in claim 1, it is characterised in that this backlight module separately comprises reflector plate, and this reflector plate is arranged under this light guide plate.
4. display device as claimed in claim 1, it is characterised in that the edge of this quantum dot enhanced film is blocked in this support portion.
5. display device as claimed in claim 1, it is characterised in that this blue light source through this quantum dot enhanced film, blendes together white light in this quantum dot enhanced film towards the side of this display floater.
6. display device as claimed in claim 1, it is characterized in that, this display floater has territory, effective display area, the surrounding of this display floater has black light shield layer, this territory, effective display area is in the region in this black light shield layer, and this effectively shows that border corresponds to the border in this territory, effective display area.
7. a backlight module, in order to provide light to display floater, this display floater has and effectively shows border, it is characterised in that comprise:
Framework, has support portion;
Light guide plate, is arranged in this framework, and this light guide plate is positioned at below this support portion;
Blue light source, is arranged in this framework and is positioned at the side of this light guide plate; And
Quantum dot enhanced film, it is arranged on this light guide plate, the edge of this quantum dot enhanced film is between this support portion and this light guide plate, so that this support portion and this quantum dot enhanced film partly overlap, it is to avoid this effective display boundary at this display floater produces light leak.
8. backlight module as claimed in claim 7, it is characterised in that this backlight module separately comprises reflector plate, and this reflector plate is arranged under this light guide plate.
9. backlight module as claimed in claim 7, it is characterised in that the edge of this light guide plate is positioned at below this support portion, and the edge of this quantum dot enhanced film is blocked in this support portion.
10. backlight module as claimed in claim 7, it is characterised in that the light that this blue light source sends is directed to this quantum dot enhanced film through this light guide plate so that this this quantum dot enhanced film is excited.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310645915.3A CN103698937B (en) | 2013-12-04 | 2013-12-04 | Display device and backlight module thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310645915.3A CN103698937B (en) | 2013-12-04 | 2013-12-04 | Display device and backlight module thereof |
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| Publication Number | Publication Date |
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| CN103698937A CN103698937A (en) | 2014-04-02 |
| CN103698937B true CN103698937B (en) | 2016-06-08 |
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| CN201310645915.3A Active CN103698937B (en) | 2013-12-04 | 2013-12-04 | Display device and backlight module thereof |
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| CN103955093B (en) * | 2014-05-04 | 2016-07-27 | 常州丰盛光电科技股份有限公司 | Optical plate based on quantum dot |
| CN105090808B (en) * | 2014-05-13 | 2017-08-29 | 扬升照明股份有限公司 | Backlight module |
| TWI540349B (en) * | 2014-05-29 | 2016-07-01 | Radiant Opto Electronics Corp | Backlight module |
| KR101510855B1 (en) * | 2014-08-22 | 2015-04-09 | 삼성전자 주식회사 | Mold frames and optical sheets and backlight units and liquid crystal displays including the same |
| CN105402640B (en) * | 2014-09-15 | 2018-04-24 | 扬升照明股份有限公司 | Backlight module |
| CN104317099B (en) * | 2014-11-17 | 2017-05-10 | 京东方科技集团股份有限公司 | Color film substrate and display device |
| KR102279386B1 (en) * | 2015-02-03 | 2021-07-21 | 삼성전자주식회사 | Display appartus |
| CN104777670B (en) | 2015-05-05 | 2017-12-29 | 武汉华星光电技术有限公司 | Quantum dot diaphragm and liquid crystal display |
| CN106287397A (en) * | 2015-05-25 | 2017-01-04 | 鸿富锦精密工业（深圳）有限公司 | Backlight module, light conducting plate structure and display device |
| CN104848099B (en) * | 2015-06-08 | 2018-01-16 | 武汉华星光电技术有限公司 | A kind of high colour gamut backlight module and display device |
| CN104932141A (en) | 2015-06-09 | 2015-09-23 | 武汉华星光电技术有限公司 | Backlight module and display device |
| CN106292056A (en) | 2015-06-09 | 2017-01-04 | 瑞仪光电(苏州)有限公司 | Backlight module |
| CN106292055A (en) * | 2015-06-09 | 2017-01-04 | 瑞仪光电(苏州)有限公司 | Quantum dot enhanced film and backlight module |
| CN105044984B (en) * | 2015-08-21 | 2017-12-15 | 深圳市华星光电技术有限公司 | Liquid crystal display device and its backlight module |
| CN105353557A (en) * | 2015-11-03 | 2016-02-24 | 纳晶科技股份有限公司 | Backlight module and display device |
| CN107402474A (en) * | 2016-05-19 | 2017-11-28 | 鸿富锦精密工业（深圳）有限公司 | Display device |
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| TWI679475B (en) * | 2016-05-27 | 2019-12-11 | 鴻海精密工業股份有限公司 | Display device |
| CN106597753B (en) * | 2017-02-28 | 2020-04-10 | 深圳市华星光电技术有限公司 | Backlight module |
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| CN115685605A (en) * | 2021-07-26 | 2023-02-03 | 北京京东方显示技术有限公司 | Display module and display device |
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| CN103698937A (en) | 2014-04-02 |
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