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Dichroic optical filter fluorescence-enhanced light guide plate and manufacturing method thereof

A dichroic filter and fluorescence enhancement technology, applied in the field of quantum dot display devices, can solve problems such as brightness reduction and emission spectrum red shift, and achieve the effects of avoiding brightness reduction, wide color gamut, and avoiding emission spectrum red shift

Active Publication Date: 2015-04-22
GUANGDONG POLY OPTOELECTRONICS
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  • Description
  • Claims
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Problems solved by technology

[0004] In order to solve the above technical problems, the present invention provides a quantum dot display device, which can achieve a wide color gamut at a lower cost, and at the same time avoid the problems of reduced brightness and red shift of emission spectrum caused by quantum dot luminescence being absorbed by itself

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  • Dichroic optical filter fluorescence-enhanced light guide plate and manufacturing method thereof

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Embodiment Construction

[0022] refer to figure 1 , is a structural schematic diagram of a dichroic filter-enhanced fluorescent light guide plate according to an embodiment of the present invention. The dichroic filter-enhanced fluorescent light guide plate shown is composed of a dichroic filter 1 , a fluorescent layer 2 and a light guide plate 3 , and the fluorescent layer 2 is located between the dichroic filter 1 and the light guide plate 3 .

[0023] As an improvement to the above-mentioned embodiment, the dichroic filter 1 is an interference filter, the substrate of which is optical glass, and several layers of coatings are provided on the surface. The dichroic filter 1 utilizes the principle of thin film interference to separate the monochromatic light in the mixed light, and the incident light will be refracted multiple times in the coating to form isoclinic coherent transmitted light.

[0024] As a further improvement to the above embodiment, the dichroic filter 1 has a transmittance of 20%-5...

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Abstract

The invention relates to a dichroic optical filter fluorescence-enhanced light guide plate which is used for an LED backlight module. The dichroic optical filter fluorescence-enhanced light guide plate is composed of a dichroic optical fiber 1, a fluorescence layer 2 and a light guide plate body 3. The fluorescence layer 2 is located between the dichroic optical fiber 1 and the light guide plate body 3. The invention further relates to a manufacturing method of the dichroic optical filter fluorescence-enhanced light guide plate. By means of the dichroic optical filter fluorescence-enhanced light guide plate, the wide gamut can be obtained with the low cost, and meanwhile the problems that due to the fact that light emitted by quantum dots is absorbed by the quantum dots, the brightness is reduced, and red shift of an emission spectrum is caused are avoided. Meanwhile, the manufacturing method is easy to implement, and the obtained dichroic optical filter fluorescence-enhanced light guide plate further has the light guide and white light modulation functions.

Description

technical field [0001] The invention relates to a quantum dot display device, in particular to a dichroic filter enhanced fluorescent light guide plate, which is used in an LED liquid crystal display device and belongs to the field of display technology. The invention also relates to a preparation method of the dichroic filter enhanced fluorescent light guide plate. Background technique [0002] At present, there are two main methods to realize the white backlight in liquid crystal display: one is to use blue LED to excite the phosphor to emit yellow light, and the blue light and yellow light are mixed to produce white light; the other is to use red, green and blue LEDs. Mix red, green and blue light to produce white light. However, the above two methods have disadvantages. The first method has a narrow color gamut of the display due to the wide emission spectrum of the phosphor, while the second method can achieve a wider color gamut, but the cost is higher. . [0003] I...

Claims

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Application Information

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IPC IPC(8): G02B6/00G02B5/28C09D5/22
CPCC09D5/22G02B5/28G02B6/0003G02F1/133609
Inventor 陈财康
Owner GUANGDONG POLY OPTOELECTRONICS
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