CN205809482U

CN205809482U - A kind of quantum dot and the LCDs of YAG fluorescent powder blending

Info

Publication number: CN205809482U
Application number: CN201620317212.7U
Authority: CN
Inventors: 李达明
Original assignee: Shenzhen Century Century Technology Co Ltd
Current assignee: Shenzhen Century Century Technology Co Ltd
Priority date: 2016-04-15
Filing date: 2016-04-15
Publication date: 2016-12-14
Anticipated expiration: 2026-04-15

Abstract

This utility model relates to technical field of liquid crystal display, it is specifically related to a kind of quantum dot and the LCDs of YAG fluorescent powder blending, described light-source structure is by solid heat radiation aluminum hull (1), PCB (2) and blue-ray LED (3) are constituted, described solid heat radiation aluminum hull (1) is strip flute profile, described blue-ray LED (3) is arranged on the trough-shaped base section of solid heat radiation aluminum hull by PCB (2), the notch of solid heat radiation aluminum hull (1) is provided with transparent glass (12), quantum dot film (4) it is provided with on the light exit wound of bullet of described light guide plate (5), quantum dot film is distributed quantum dot and yellow fluorescent powder in (4).This utility model improves color gamut wideness, can reach 110%；It addition, quantum dot film is arranged on reflecting plate in this utility model, it is divided into two parts with light-source structure, can effectively be optically isolated the heat that source structure is dissipated, reduce quantum dot further unstable because of variations in temperature.

Description

A kind of quantum dot and the LCDs of YAG fluorescent powder blending

Technical field

This utility model relates to technical field of liquid crystal display, is specifically related to a kind of quantum dot and the liquid of YAG fluorescent powder blending Crystal display screen.

Background technology

Quantum dot (quantum dot) is the nano material of quasi-zero dimension (quasi-zero-dimensional), by a small quantity Atom constituted.Roughly, all in 100 nanometers (nm) below, outward appearance is minimum just like one for the size of three dimensions of quantum dot Pointing object, the motion in all directions of its internal electron is all limited to, so quantum confined effect (quantum Confinement effect) particularly significant.

The colour gamut of LCD TV depends on the spectral characteristic of backlight and spectrum and liquid crystal panel colored filter (CF) Matching degree.As long as back light white light, white light can be obtained by any color wanted through optical filter again, if white color The LCD TV colour gamut that the enough height in territory then draw also can be high.Industry commonly used NTSC standard weighs color displays effect at present Really, color domain coverage ratio (abbreviation colour gamut) is the highest, and the color gamut that TV is presented is the abundantest, closer to Natural color.

Traditional WLED TV uses the light-emitting mode of " blue-ray LED+yellow fluorescent powder " (to be sent by blue-ray LED mostly Light excite yellow fluorescent powder to produce gold-tinted, remaining blue light and gold-tinted colour mixture and obtain white light, for RGB three primary colours, its Excitation is very poor), though people can be allowed to feel white light, but lack HONGGUANG and green glow makes colour mixture the most difficult, be to cause colour gamut The reason that coverage rate is on the low side and backlight conversion efficiency is the highest.General color domain coverage ratio (abbreviation colour gamut) is less than 72%, the most mostly Number liquid crystal display (TV or mobile phone) all uses this light-emitting mode.

In prior art, use the technology main flow of quantum dot light emitting, be mainly that the light utilizing blue-ray LED to send excites two Plant quantum dot (red light quantum point and green light quantum point) material, send HONGGUANG and green glow respectively, and become with remaining blue light colour mixture For white light, this white light is just as the back light of LCD TV.This white light colour gamut out can reach 110%, quantum dot Colour gamut and the efficiency of liquid crystal display are higher, so its picture color is more natural beautiful, and take into account energy-conserving and environment-protective.

But the cost of quantum dot is the highest at present, and quantum dot can be because the environmental factorss such as temperature height exist certain unstable Qualitative, the shortcoming of poor stability, the performance most notably current equipment such as electronic equipment especially mobile phone, in use may There is certain hot environment, the illuminating source of such quantum dot then extremely unstable.

Utility model content

The purpose of this utility model is to provide a kind of quantum dot and the LCDs of YAG fluorescent powder blending, solves Existing liquid crystal display light-emitting mode uses the light-emitting mode of " blue-ray LED+yellow fluorescent powder ", and colour gamut is the widest, and employing amount Son point luminescence, again easily by using environment to be affected, the especially impact of temperature, cause flashing fixed, and all use The problem that quantum dot cost is the highest.

For solving above-mentioned technical problem, this utility model by the following technical solutions:

A kind of quantum dot and the LCDs of YAG fluorescent powder blending,

Described light-source structure is made up of solid heat radiation aluminum hull, PCB, blue-ray LED and quantum dot film, described solid scattered Hot aluminum hull is strip flute profile, and described blue-ray LED is arranged on the trough-shaped base section of solid heat radiation aluminum hull by PCB, solid scattered The notch of hot aluminum hull is provided with transparent glass；

Described display device is made up of light guide plate, blooming piece and reflecting plate, and described blooming piece and reflecting plate are arranged on The opposite sides of light guide plate, the light exit wound of bullet of described light guide plate is provided with quantum dot film, quantum is distributed in quantum dot film Point and yellow fluorescent powder；

The blue light that described blue-ray LED sends is penetrated after light guide plate and reflecting plate and is obtained mixed white light at quantum dot film, mixed Close white light and enter light guide plate from the side of light guide plate, and import realization imaging on blooming piece at light.

Further, the aluminum minute surface that cell wall is plane in described solid heat radiation aluminum hull, blue-ray LED is sent out by described aluminum minute surface The blue light gone out reflects to same direction.

Further, described quantum dot film is made up of red light quantum point, green light quantum point and yellow fluorescent powder, described blue light The blue light that LED is sent out respectively enters five passages, and having three passages in described five passages is to lead to red light quantum point, green respectively Light quanta point and yellow fluorescent powder, two other passage is blue light straight channel, HONGGUANG that red light quantum point sends, green light quantum point The blue light of the part green glow sent and a blue light straight channel becomes the first mixed white light and enters the first white light passage, another Blue light and second mixed white light obtained after the second mixing gold-tinted mixing of yellow fluorescent powder of individual blue light straight channel enter The second mixed white light that second white light passage, the first mixed white light of the first white light passage and the second white light are logical is converged mutually and is stablized White-light spectrum.

Further, described quantum dot film is to be pasted and fixed on the light exit wound of bullet of light guide plate by crystal-bonding adhesive.

Compared with prior art, the beneficial effects of the utility model are: relatively conventional WLED illuminating source carries greatly High color gamut wideness, can reach 110%, and compensate for quantum dot light source and there are the factors of instability；Solve simple use The unstability of quantum dot output white light causes the shortcoming that its color stability is poor, relatively costly；And list blue light source adds glimmering Light powder synthesis white light source, the problems such as white light colour developing territory is on the low side, and the high cost problem of full quantum dot finishing；It addition, this reality It is arranged on reflecting plate with novel middle quantum dot film, is divided into two parts with light-source structure, can effectively be optically isolated source structure and be dissipated Heat, reduce further quantum dot unstable because of variations in temperature.

Accompanying drawing explanation

Fig. 1 is the structural representation of the LCDs of a kind of quantum dot of this utility model and YAG fluorescent powder blending.

Fig. 2 is the generalized section of A-A in Fig. 1.

Fig. 3 is that the quantum dot film light of the LCDs of a kind of quantum dot of this utility model and YAG fluorescent powder blending becomes Change schematic diagram.

Detailed description of the invention

In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing and enforcement Example, is further elaborated to this utility model.Should be appreciated that specific embodiment described herein is only in order to explain This utility model, is not used to limit this utility model.

Figures 1 and 2 show that a reality of the LCDs of a kind of quantum dot of this utility model and YAG fluorescent powder blending Execute example: a kind of quantum dot and the LCDs of YAG fluorescent powder blending, described light-source structure is by solid heat radiation aluminum hull 1, PCB electricity Road plate 2 and blue-ray LED 3 are constituted, and described solid heat radiation aluminum hull 1 is strip flute profile, and described blue-ray LED 3 is pacified by PCB 2 Being contained in the trough-shaped base section of solid heat radiation aluminum hull 1, the notch of solid heat radiation aluminum hull 1 is provided with transparent glass 12；Described display device by Light guide plate 5, blooming piece 6 and reflecting plate 7 are constituted, and described blooming piece 6 and reflecting plate 7 are arranged on the opposite sides of light guide plate 5, It is provided with quantum dot film 4 on the light exit wound of bullet of described light guide plate 5, quantum dot and yellow fluorescent powder in quantum dot film 4, are distributed； The blue light that described blue-ray LED 3 sends is penetrated after light guide plate 5 and reflecting plate 7 and is obtained mixed white light at quantum dot film 4, and mixing is white Light enters light guide plate 5 from the side of light guide plate 5, and imports realization imaging on blooming piece 6 at light.Reflecting plate 7 is disposed to By on the light back that penetrates from light guide plate 5 bottom surface to light guide plate.

According to a kind of quantum dot of this utility model and another embodiment of the LCDs of YAG fluorescent powder blending, institute Stating the aluminum minute surface 11 that cell wall is plane in solid heat radiation aluminum hull 1, the blue light that blue-ray LED 3 is sent by described aluminum minute surface 11 is to same One direction refraction.

Fig. 3 shows another enforcement of the LCDs of a kind of quantum dot of this utility model and YAG fluorescent powder blending Example, described quantum dot film 4 is made up of red light quantum point 8, green light quantum point 9 and yellow fluorescent powder 10, and described blue-ray LED 3 is sent out Blue light respectively enter five passages, having three passages in described five passages is to lead to red light quantum point 8, green quantum respectively Point 9 and yellow fluorescent powder 10, two other passage is blue light straight channel, HONGGUANG R that red light quantum point 8 sends, green light quantum point 9 The part green glow G sent and the blue light B of a blue light straight channel is mixed into the first mixed white light W1 and enters the first white light passage, The blue light B of another blue light straight channel and the second mixing obtained after the second mixing gold-tinted Y2 mixing of yellow fluorescent powder 10 White light W2 enters the second mixed white light that the second white light passage, the first mixed white light W1 of the first white light passage and the second white light are logical W2 phase is converged and is obtained stable white light spectrum W.

This utility model is described by multiple explanatory embodiment the most of the present utility model, but, It should be understood that those skilled in the art can be designed that a lot of other amendments and embodiment, these amendment and embodiments To fall within spirit disclosed in the present application and spirit.More specifically, in disclosure, drawings and claims In the range of, the building block of theme composite configuration and/or layout can be carried out multiple modification and improvement.Except to building block And/or the deformation that carries out of layout and outside improving, to those skilled in the art, other purposes also will be apparent from.

Claims

1. quantum dot and a LCDs for YAG fluorescent powder blending, including light-source structure and display device, its feature exists In: described light-source structure is made up of solid heat radiation aluminum hull (1), PCB (2) and blue-ray LED (3), described solid radiation aluminium Shell (1) is strip flute profile, and described blue-ray LED (3) is arranged on by PCB (2) at the bottom of the flute profile of solid heat radiation aluminum hull (1) Portion, the notch of solid heat radiation aluminum hull (1) is provided with transparent glass (12)；

Described display device is made up of light guide plate (5), blooming piece (6) and reflecting plate (7), described blooming piece (6) and reflection Plate (7) is arranged on the opposite sides of light guide plate (5), and the light exit wound of bullet of described light guide plate (5) is provided with quantum dot film (4), Quantum dot film is distributed quantum dot and yellow fluorescent powder in (4)；

The blue light that described blue-ray LED (3) sends is penetrated after light guide plate (5) and reflecting plate (7) and is mixed at quantum dot film (4) White light, mixed white light enters light guide plate (5), and realizes imaging on light importing blooming piece (6) from the side of light guide plate (5).

A kind of quantum dot the most according to claim 1 and the LCDs of YAG fluorescent powder blending, it is characterised in that: institute Stating aluminum minute surface (11) that cell wall is plane in solid heat radiation aluminum hull (1), blue-ray LED (3) is sent by described aluminum minute surface (11) Blue light reflects to same direction.

A kind of quantum dot the most according to claim 1 and the LCDs of YAG fluorescent powder blending, it is characterised in that: institute State quantum dot film (4) to be made up of red light quantum point (8), green light quantum point (9) and yellow fluorescent powder (10), described blue-ray LED (3) The blue light sent out respectively enters five passages, and having three passages in described five passages is to lead to red light quantum point (8), green respectively Light quanta point (9) and yellow fluorescent powder (10), two other passage is blue light straight channel, the HONGGUANG that red light quantum point (8) sends (R) it is white that part green glow (G) that, green light quantum point (9) sends and the blue light (B) of a blue light straight channel are mixed into the first mixing Light (W1) enters the first white light passage, the blue light (B) of another blue light straight channel and mixing through the second of yellow fluorescent powder (10) The second mixed white light (W2) obtained after closing gold-tinted (Y2) mixing enters the second white light passage, the first mixing of the first white light passage The second mixed white light (W2) that white light (W1) is logical with the second white light is converged mutually and is obtained stable white light spectrum (W).

A kind of quantum dot the most according to claim 1 and the LCDs of YAG fluorescent powder blending, it is characterised in that: institute Stating quantum dot film (4) is to be pasted and fixed on the light exit wound of bullet of light guide plate (5) by crystal-bonding adhesive.