CN208721952U - A kind of LCD display device and its back light source structure - Google Patents
A kind of LCD display device and its back light source structure Download PDFInfo
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- CN208721952U CN208721952U CN201821116222.XU CN201821116222U CN208721952U CN 208721952 U CN208721952 U CN 208721952U CN 201821116222 U CN201821116222 U CN 201821116222U CN 208721952 U CN208721952 U CN 208721952U
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Abstract
The utility model relates to a kind of LCD display device and its back light source structures, the LCD display device includes back light source structure and LCD mould group, the back light source structure includes backboard, the reflector being successively set on backboard, light guide plate and brightness enhancement film and multiple LED illuminating parts that light guide plate side is set, it further include the optical color conversion film being arranged between the light guide plate and brightness enhancement film, the optical color conversion film includes resin base membrane layer and the coating layer that resin base membrane layer upper and lower surfaces are arranged in, the coating layer includes being adhered to solidifying colloid layer and being evenly distributed to the multiple diffused components solidified in colloid layer for the corresponding resin basement membrane layer surface, the colloid layer that solidifies includes the solidification colloid containing organic fluorescence transition material.Excitation purity, light efficiency, brightness, light transmittance and the NTSC color gamut of the white light of sending can be improved in the utility model, and low energy consumption, energy conservation and environmental protection, at low cost.
Description
[technical field]
The utility model relates to full-color display back light source technique fields, aobvious more particularly, to a kind of LCD (liquid crystal display)
Show equipment and its back light source structure.
[background technique]
LCD is the widest flat panel display technology of current application, for currently used LCD display device, as mobile phone is aobvious
Display screen, television display screen etc. generally use white light LED backlight structure and provide backlight.Traditional white light LED backlight knot
Structure is broadly divided into following three kinds:
(1) blue-light LED chip excites yellow inorganic fluorescent powder structure；
(2) UV LED chip excites redgreenblue inorganic fluorescent powder structure simultaneously；
(3) redgreenblue LED integrated morphology.
However, there are some apparent defects for above-mentioned three kinds common white light LED backlights.Wherein, back light source structure (1)
It is the simplest, but its spectrum is very dull, and color rendition degree is poor, and the white light generated is through the formed three primary colours of optical filter
In, in addition to blue light, red green purity and efficiency are undesirable, are not the optimal selections of LCD backlight.The color of back light source structure (2)
Color relative abundance, but due to using ultraviolet light as fluorescence excitaton source, larger to the harm of naked eyes, Related product is at present
It is not mature enough.Back light source structure (3) current comparative maturity has some applications in plane display field, but its structure composition is multiple
It is miscellaneous, prepare cumbersome, production cost is relatively high.
[utility model content]
The purpose of the utility model is to overcome the deficiencies of above-mentioned technology, provide a kind of with higher excitation purity, light efficiency
With the LCD display device and its back light source structure of brightness and low cost.
A kind of LCD display device that the first aspect of the utility model provides, including back light source structure and LCD mould group, institute
Back light source structure is stated to include backboard, the reflector being successively set on backboard, light guide plate and brightness enhancement film and be arranged in light guide plate
Multiple LED illuminating parts of side, further include the optical color conversion film being arranged between the light guide plate and brightness enhancement film, and described photochromic turn
Changing film includes resin base membrane layer and the coating layer that resin base membrane layer upper and lower surfaces are arranged in, and the coating layer includes viscous
It is connected to solidifying colloid layer and being evenly distributed to the multiple diffusions solidified in colloid layer for the corresponding resin basement membrane layer surface
Element, the colloid layer that solidifies includes the solidification colloid containing organic fluorescence transition material.
Further, the organic fluorescence transition material includes that feux rouges organic fluorescence transition material and green light organic fluorescence turn
The colloid layer that solidifies of conversion materials, resin base membrane layer upper surface includes the solidification containing the feux rouges organic fluorescence transition material
The colloid layer that solidifies of colloid, resin base membrane layer lower surface includes the solidification glue containing the green light organic fluorescence transition material
Body.
Further, the luminescence peak of the feux rouges organic fluorescence transition material is 615-625nm, and the green light is organic glimmering
The luminescence peak of light conversion material is 520-530nm.
Further, the relatively corresponding mass ratio for solidifying colloid of the feux rouges organic fluorescence transition material focuses on 1/
Between, the relatively corresponding mass ratio for solidifying colloid of the green light organic fluorescence transition material focuses on
Between.
Further, the LED illuminating part includes the transparent enclosure glue-line in LED chip and setting LED chip.
Further, the LED chip is blue-light LED chip, and the luminescence peak of the blue-light LED chip is 400-
500nm。
Further, the luminescence peak of the blue-light LED chip is 460-470nm.
Further, the diffused component includes diffusion particle, and the diameter of the diffusion particle is 2-30 μm.
Further, the resin base membrane layer includes resin basement membrane, the resin basement membrane with a thickness of 45-55 μm.
A kind of back light source structure that the second aspect of the utility model provides, including backboard, is successively set on backboard
Reflector, light guide plate and brightness enhancement film and multiple LED illuminating parts that light guide plate side is arranged in further include being arranged in the leaded light
Optical color conversion film between plate and brightness enhancement film, the optical color conversion film include resin base membrane layer and are arranged on resin base membrane layer
The coating layer on surface and lower surface, the coating layer include the solidification colloid layer for being adhered to the corresponding resin basement membrane layer surface
And the multiple diffused components solidified in colloid layer are evenly distributed to, the solidification colloid layer includes converting material containing organic fluorescence
The solidification colloid of material.
Implement the utility model, excitation purity, light efficiency, brightness, light transmittance and the NTSC color gamut of the white light of sending can be improved, it can
Color rendition degree is significantly promoted, low energy consumption, energy conservation and environmental protection, and it is at low cost, human eyesight is damaged small.
[Detailed description of the invention]
Fig. 1 is the floor map for the LCD display device that an embodiment of the present invention provides；
Fig. 2 is the decomposition diagram of the back light source structure of LCD display device shown in Fig. 1；
Fig. 3 is the schematic cross-sectional view of the optical color conversion film of back light source structure shown in Fig. 2；
Fig. 4 is the white-light spectrum curve graph of the back light source structure of an embodiment shown in Fig. 2 in normal operation.
[specific embodiment]
The utility model will be further described with reference to the accompanying drawings and examples.
With reference to Fig. 1 and Fig. 2, a kind of LCD display device that an embodiment of the present invention provides, such as mobile phone display screen,
Television display screen etc., including back light source structure 100 and the LCD mould group (being not shown on figure) being arranged on back light source structure 100.
Back light source structure 100 provides backlight to LCD mould group.
Back light source structure 100 includes backboard 10, the reflector 11 being successively set on backboard 10, light guide plate 12, photochromic turn
It changes film 13 and brightness enhancement film 14 and multiple LED illuminating parts 15 to the horizontal projection of light guide plate 12 of 12 side of light guide plate is set.
Luminous (that is, in-plane where light guide plate 12) in the horizontal direction of LED illuminating part 15 enters light guide plate 12, in light guide plate 12
Inside be converted to vertical direction transmitting (that is, perpendicular to direction of light guide plate 12).Reflector 11 is carried out for the opposite lower light emitted
Reflection is to guarantee that all light all emit upwards.The light that optical color conversion film 13 is used to come out from 12 Vertical Launch of light guide plate carries out light
Color is converted and the light for coming out Vertical Launch is evenly distributed in entire plane.Brightness enhancement film 14 is for switching to the light of oblique transmitting
Emit to surface.
LED illuminating part 15 includes LED chip and the transparent enclosure glue-line being arranged in LED chip.LED chip is preferably
Blue-light LED chip.The luminescence peak of blue-light LED chip is 400-500nm (nanometer), and the present embodiment blue-light LED chip shines
Peak value is preferably 460-470nm.Luminescence peak is danger of 460-470nm, that is, long wavelength blue chip to the fundus flavimaculatus of human eye
Evil is smaller, relative to the blue chip of the lower i.e. short wavelength of other peak luminous wavelengths, under the premise of not losing display effect
It can effectively reduce in light source to damage caused by human eyesight, protect the health of human eye.
With reference to Fig. 3, optical color conversion film 13 include resin base membrane layer 131 and setting in 131 upper surface of resin base membrane layer and
The coating layer 132 of lower surface.Resin base membrane layer 131 includes resin basement membrane.Resin basement membrane is preferably that light transmittance is poly- higher than 90%
Object film, such as polyester (PET) film are closed, light transmission is good, at low cost.Resin basement membrane with a thickness of 45-55 μm (micron), it is excellent
It is selected as 50 μm.The thickness of resin basement membrane can be selected according to the actual situation.Coating layer 132 includes being adhered to corresponding resin base
131 surface of film layer solidifies colloid layer 133 and is evenly distributed to the multiple diffused components 134 solidified in colloid layer 133.Diffusion
The number of element 134 can be configured according to the actual size of resin base membrane layer 131.Solidification colloid layer 133 will be for that will spread member
Part 134 is fixedly attached to the surface of resin base membrane layer 131.Diffused component 134 is used to have an impact the transmission of light and diverging,
Spread light uniformly.Diffused component 134 includes diffusion particle, and diffusion particle is preferably PMMA (polymethyl methacrylate) grain
Son or PS (polystyrene) particle etc..The diameter of diffusion particle is 2-30 μm, preferably 15 μm.The type of diffusion particle, diameter
Size can be selected according to the actual situation.
Solidifying colloid layer 133 includes the solidification colloid containing organic fluorescence transition material, and solidification colloid, which preferably contains, to be had
The bonding resin of machine fluorescence transition material, bonding resin has the characteristic of good ultra-violet curing or heat cure, convenient for solidification.
Solidify being produced as follows for colloid: bonding resin material and organic fluorescence transition material are mixed and led to
It crosses organic solvent to be dissolved, complete after being sufficiently stirred.
In the present embodiment, organic fluorescence transition material includes feux rouges organic fluorescence transition material and the conversion of green light organic fluorescence
Material.The colloid layer 133 that solidifies of 131 upper surface of resin base membrane layer includes the solidification glue containing feux rouges organic fluorescence transition material
Body.The relatively corresponding mass ratio for solidifying colloid of feux rouges organic fluorescence transition material focuses between 1/100000-1/10000.It is red
The luminescence peak of light organic fluorescence transition material is 615-625nm, and has stronger light absorption energy in the wavelength period of 520-530nm
Power.The colloid layer 133 that solidifies of 131 lower surface of resin base membrane layer includes the solidification colloid containing green light organic fluorescence transition material.
The relatively corresponding mass ratio for solidifying colloid of green light organic fluorescence transition material focuses between 1/10000-1/1000.Green light is organic
The luminescence peak of fluorescence transition material is 520-530nm, and has stronger light absorpting ability in the wavelength period of 460-470nm.By
It is located at the lower surface of resin base membrane layer 131 in green light organic fluorescence transition material, so as to emit and pass through blue-light LED chip
The some blue light that light guide plate 12 is launched is changed into green emission by way of luminescence generated by light.And feux rouges organic fluorescence converts material
Material position can will pass through light by the part green light of green light organic fluorescence transition material transformation in the upper surface of resin base membrane layer 131
The mode of photoluminescence is changed into feux rouges.In actual application, by adjusting green light and feux rouges organic fluorescence transition material
Ratio is, it can be achieved that emit blue light, feux rouges and the green light of standard proportional.The blue and green light emitted by blue-light LED chip is organic glimmering
The green light of light conversion material transformation and the feux rouges of feux rouges organic fluorescence transition material transformation are greatly improved back light source structure 100
White light excitation purity, light efficiency and brightness, reduce energy consumption, relatively traditional back light source structure can save the energy of 15%-50%
Consumption, at low cost, performance is stablized.And green light and feux rouges the organic fluorescence conversion changed by green light organic fluorescence transition material
The feux rouges of material transformation is with higher color saturation and colour gamut, it can be achieved that 90% or more NTSC (National Television mark
The quasi- committee) colour gamut.For inorganic fluorescent material, compatibility of the organic fluorescence materials for different wave length blue-light LED chip
Stronger, the long wavelength's blue light for the 460-470nm that can arrange in pairs or groups of property, more healthy eyeshield；Organic fluorescence transition material is opposite simultaneously holds
Easy natural degradation, will not be detrimental to health and environment, strong applicability.
Fig. 4 be the use of luminescence peak is 460nm blue-light LED chip, luminescence peak be 530nm green light organic fluorescence turn
The back light source structure 100 that the feux rouges organic fluorescence transition material that conversion materials and luminescence peak are 622nm combines is working normally shape
White-light spectrum curve graph under state.Green light organic fluorescence transition material is 1/ relative to the corresponding quality specific gravity for solidifying colloid
1000, feux rouges organic fluorescence transition material is 1/10000 relative to the corresponding quality specific gravity for solidifying colloid.In white-light spectrum song
In line chart, horizontal axis indicates that spectral wavelength, that is, luminescence peak, the longitudinal axis indicate spectral intensity.It can be seen from the chart, it is practical by this
The spectrum for the white light that novel back light source structure 100 emits is wider, distribution more balances, and has higher luminous efficiency.
By above-mentioned back light source structure 100, the LCD display device of the utility model may be implemented >=90% even
100% NTSC color gamut, and the trichromatic excitation purity of RGB is greatly improved, performance is stablized, energy conservation, while making the saturating of light
Light rate gets a promotion, and light transmittance can promote 25% or more.
The LCD display device of the utility model is done into backlight with existing with traditional white light LED backlight structure
LCD display device compares, and contrast effect is as shown in the table:
As it can be seen that the LCD display device of the utility model is greatly improved excitation purity, light efficiency, brightness, light transmittance and NTSC color
Domain, it is practical.
Above embodiments only express preferred embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
Therefore it cannot be interpreted as that a limitation on the scope of the patent of the present invention.It should be pointed out that for the ordinary skill of this field
For personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, such as to each implementation
Different characteristic in example is combined, and these are all within the protection scope of the present invention.
Claims (9)
1. a kind of LCD display device, including back light source structure and LCD mould group, the back light source structure include backboard, set gradually
Reflector, light guide plate and brightness enhancement film on backboard and multiple LED illuminating parts that light guide plate side is arranged in, feature exist
In: it further include the optical color conversion film being arranged between the light guide plate and brightness enhancement film, the optical color conversion film includes resin basement membrane
Layer and the coating layer that resin base membrane layer upper and lower surfaces are arranged in, the coating layer include being adhered to the corresponding tree
Aliphatic radical film surface solidifies colloid layer and is evenly distributed to the multiple diffused components solidified in colloid layer, the solidification colloid
Layer includes the solidification colloid containing organic fluorescence transition material；The organic fluorescence transition material includes the conversion of feux rouges organic fluorescence
Material and green light organic fluorescence transition material, the solidification colloid layer of resin base membrane layer upper surface include having containing the feux rouges
The solidification colloid of machine fluorescence transition material, the solidification colloid layer of resin base membrane layer lower surface include organic containing the green light
The solidification colloid of fluorescence transition material.
2. LCD display device according to claim 1, it is characterised in that: the hair of the feux rouges organic fluorescence transition material
Photopeak value is 615-625nm, and the luminescence peak of the green light organic fluorescence transition material is 520-530nm.
3. LCD display device according to claim 1, it is characterised in that: the feux rouges organic fluorescence transition material is opposite
The corresponding mass ratio for solidifying colloid focuses between 1/100000-1/10000, the green light organic fluorescence transition material phase
The corresponding mass ratio for solidifying colloid is focused between 1/10000-1/1000.
4. LCD display device according to claim 1, it is characterised in that: the LED illuminating part include LED chip and
Transparent enclosure glue-line in LED chip is set.
5. LCD display device according to claim 4, it is characterised in that: the LED chip is blue-light LED chip, described
The luminescence peak of blue-light LED chip is 400-500nm.
6. LCD display device according to claim 5, it is characterised in that: the luminescence peak of the blue-light LED chip is
460-470nm。
7. LCD display device according to claim 1, it is characterised in that: the diffused component includes diffusion particle, described
The diameter of diffusion particle is 2-30 μm.
8. LCD display device according to claim 1, it is characterised in that: the resin base membrane layer includes resin basement membrane, institute
State resin basement membrane with a thickness of 45-55 μm.
9. a kind of back light source structure, including backboard, the reflector being successively set on backboard, light guide plate and brightness enhancement film and setting
Multiple LED illuminating parts in light guide plate side, it is characterised in that: further include the light being arranged between the light guide plate and brightness enhancement film
Color converts film, and the optical color conversion film includes resin base membrane layer and the coating that resin base membrane layer upper and lower surfaces are arranged in
Layer, the coating layer includes being adhered to the solidification colloid layer of the corresponding resin basement membrane layer surface and being evenly distributed to solidification
Multiple diffused components in colloid layer, the colloid layer that solidifies includes the solidification colloid containing organic fluorescence transition material；It is described
Organic fluorescence transition material includes feux rouges organic fluorescence transition material and green light organic fluorescence transition material, the resin base membrane layer
The colloid layer that solidifies of upper surface includes the solidification colloid containing the feux rouges organic fluorescence transition material, under the resin base membrane layer
The colloid layer that solidifies on surface includes the solidification colloid containing the green light organic fluorescence transition material.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2018204899551 | 2018-04-08 | ||
| CN201820489955 | 2018-04-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208721952U true CN208721952U (en) | 2019-04-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821116222.XU Active CN208721952U (en) | 2018-04-08 | 2018-07-13 | A kind of LCD display device and its back light source structure |
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| Country | Link |
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| CN (1) | CN208721952U (en) |
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2018
- 2018-07-13 CN CN201821116222.XU patent/CN208721952U/en active Active
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