CN208721953U - A kind of LCD display device and its display module - Google Patents

Abstract

The utility model relates to a kind of LCD display device and its display modules, the LCD display device includes display module, the display module includes back light source structure and the liquid crystal module that is arranged on back light source structure, the back light source structure includes multiple LED illuminating parts and optical functional film, the liquid crystal module includes upper substrate and the upper polaroid that is arranged on upper substrate, the one side close to the upper polaroid of the upper substrate is equipped with colored filter, the LED illuminating part includes LED chip and the encapsulation glue-line containing red inorganic fluorescent powder that is arranged in LED chip；The colored filter includes blue filter film, green filter film and red filter film, and the green filter film is coated with green light organic fluorescence transition material close to the one side of the upper substrate.Light efficiency, brightness, color saturation, excitation purity, light transmittance and the NTSC color gamut of the white light of sending can be improved in the utility model, and low energy consumption, at low cost.

Description

A kind of LCD display device and its display module

[technical field]

The utility model relates to full-color display back light source technique fields, more particularly, to a kind of and LCD (liquid crystal display) Show equipment and its display module.

[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, tablet personal computer display screen etc., display module generally includes back light source structure and liquid crystal module. After RGB filter coating of the backlight that the back light source structure of traditional display module provides Jing Guo liquid crystal module, the low, color with light intensity The disadvantages such as color saturation degree is low, excitation purity is low, light transmittance is low, while energy consumption is high, NTSC ((U.S.) the national television standard committee of realization Member's meeting) colour gamut is low.

[utility model content]

The purpose of the utility model is to overcome the deficiencies of above-mentioned technology, provide a kind of with high photosynthetic efficiency, high color saturation It spends, the LCD display device and its display module of low energy consumption and high NTSC color gamut.

The first aspect of the utility model provides a kind of LCD display device, including display module, and the display module includes Back light source structure and the liquid crystal module being arranged on back light source structure, the back light source structure include multiple LED illuminating parts and Optical functional film, the liquid crystal module include upper substrate and the upper polaroid that is arranged on upper substrate, the upper substrate It is equipped with colored filter close to the one side of the upper polaroid, the LED illuminating part includes LED chip and is arranged in LED core The encapsulation glue-line containing red inorganic fluorescent powder of on piece；The colored filter include blue filter film, green filter film with And red filter film, the green filter film are coated with green light organic fluorescence transition material close to the one side of the upper substrate.

Further, the luminescence peak of the green light organic fluorescence transition material is 520-530nm.

Further, the luminescence peak of the red inorganic fluorescent powder is 615-625nm.

Further, the mass ratio of the relatively described encapsulation glue-line of the red inorganic fluorescent powder focuses between 10%-40%.

Further, the LED chip is blue-light LED chip.

Further, 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 liquid crystal module further includes the down polaroid being successively set on the back light source structure, lower base Plate and liquid crystal layer, the upper substrate setting is on the liquid crystal layer；The one side close to the down polaroid of the lower substrate Equipped with thin-film transistor circuit.

Further, the lower substrate close to the one side of the liquid crystal layer, the upper substrate close to the liquid crystal layer One side be equipped with groove structure；The groove structure is equipped with alignment film.

The second aspect of the utility model provides a kind of display module, including back light source structure and setting in backlight knot Liquid crystal module on structure, the back light source structure include multiple LED illuminating parts and optical functional film, and the liquid crystal module includes The one side close to the upper polaroid of upper substrate and the upper polaroid being arranged on upper substrate, the upper substrate is equipped with colour Optical filter, the LED illuminating part include LED chip and the encapsulation containing red inorganic fluorescent powder that is arranged in LED chip Glue-line；The colored filter includes blue filter film, green filter film and red filter film, and the green filter film is close The one side of the upper substrate is coated with green light organic fluorescence transition material.

Implement the utility model, can be improved the light efficiency of the white light of sending, brightness, color saturation, excitation purity, light transmittance and NTSC color gamut, low energy consumption, energy conservation and environmental protection, at low cost.

[Detailed description of the invention]

Fig. 1 is a kind of structural schematic diagram of the display module for LCD display device that an embodiment of the present invention provides；

Fig. 2 is the decomposition diagram of the back light source structure of display module shown in Fig. 1；

Fig. 3 is the decomposition diagram of the liquid crystal module of display module shown in Fig. 1；

Fig. 4 be the backlight that provides of back light source structure shown in Fig. 3 by upper substrate blue filter film, green filter film with And the schematic diagram of red filter film；

Fig. 5 is the curve synoptic diagram of the light spectrum of the rgb pixel point of display module shown in Fig. 1.

[specific embodiment]

The utility model will be further described with reference to the accompanying drawings and examples.

With reference to Fig. 1, a kind of LCD display device that an embodiment of the present invention provides can be used as mobile phone display screen, TV Machine display screen, tablet personal computer display screen etc..The LCD display device includes display module.Display module includes back light source structure 10 And the liquid crystal module 30 on back light source structure 10 is set.Back light source structure 10 provides backlight to liquid crystal module 30.

With reference to Fig. 2, back light source structure 10 includes multiple LED illuminating parts 16 and optical functional film.Optical functional film packet Include backboard 11, the reflector being successively set on backboard 11 12, light guide plate 13, diffusion barrier 14 and brightness enhancement film 15.Multiple LED shine Part 16 is arranged in the side of light guide plate 13 and projects to light guide plate 13 is horizontal.LED illuminating part 16 it is luminous in the horizontal direction (that is, In-plane where light guide plate 12) enter light guide plate 13, be converted in light guide plate 13 vertical direction transmitting (that is, perpendicular to The direction of light guide plate 12).Reflector 12 is reflected for the opposite lower light emitted to guarantee that all light all emit upwards.Diffusion Film 14 is used to the light come out from 13 Vertical Launch of light guide plate being evenly distributed on entire plane.Brightness enhancement film 15 is used for oblique hair The light penetrated switchs to emit to surface.

LED illuminating part 16 includes LED chip and the packaging plastic containing red inorganic fluorescent powder being arranged in LED chip Layer.In the present embodiment, LED chip is blue-light LED chip.The luminescence peak of blue-light LED chip is 400-500nm (nanometer), this The luminescence peak of the blue-light LED chip of embodiment is preferably 460-470nm.Luminescence peak is 460-470nm, that is, long wavelength indigo plant Optical chip is smaller to the harm of the fundus flavimaculatus of human eye, the blue light core relative to the lower i.e. short wavelength of other peak luminous wavelengths Piece can effectively reduce in light source to damage caused by human eyesight under the premise of not losing display effect, protect human eye Health, reduce the pollution of blue light.

The luminescence peak of red inorganic fluorescent powder is 615-625nm.The relatively described encapsulation glue-line of red inorganic fluorescent powder Mass ratio focuses between 10%-40%.Red inorganic fluorescent powder has the ability compared with strong light absorption in the wavelength period of 460-470nm, Feux rouges can be changed by the physical process of luminescence generated by light, some blue light that blue-light LED chip is issued.It is red inorganic glimmering The material of light powder is usually sulfide systems material.In practical applications, by adjusting the content of red inorganic fluorescent powder and not With manufacturing process, it can be achieved that reconciling customization to LED light spectrum.

Some blue light is changed by the blue light that blue-light LED chip issues after the encapsulation glue-line containing red inorganic fluorescent powder Feux rouges, thus the light that issues of LED illuminating part 16 is the combination (see Fig. 4) of blue light and feux rouges, blue light and feux rouges are successively through the light guide plate 13, after diffusion barrier 14 and brightness enhancement film 15, uniform backlight can be provided for liquid crystal module 30.

With reference to Fig. 3, liquid crystal module 30 include be successively set on back light source structure 10 down polaroid 31, lower substrate 32, Liquid crystal layer 33, upper substrate 34 and upper polaroid 35.Lower substrate 32, upper substrate 34 are all glass plate.The close liquid of lower substrate 32 The close liquid crystal layer 33 when, upper substrate 34 of crystal layer 33 while be equipped with groove structure (being not shown on figure).On groove structure It (is not shown on figure) equipped with alignment film, can allow liquid crystal molecule in liquid crystal layer 33 structure proper alignment along groove.

The one side of the close down polaroid 31 of lower substrate 32 is equipped with thin film transistor (TFT) (TFT) circuit (being not shown on figure), uses In driving liquid crystal pixel point.The one side of the close upper polaroid 35 of upper substrate 34 is equipped with colored filter.Colored filter includes Blue filter film 341, green filter film 342 and the red filter film 343 being closely arranged side by side along the length direction of upper substrate 34. In other embodiments, blue filter film 341, green filter film 342 and red filter film 343 can also be along the width of upper substrate 34 Degree direction is closely arranged side by side.The arrangement mode of blue filter film 341, green filter film 343 and red filter film 343 can basis Actual conditions are selected, and the arrangement mode of three does not constitute the limitation of the utility model.Red filter film 343, green filter Tri- sub- pixels of RGB that each pixel of film 342 and blue filter film 341 and liquid crystal display panel includes are in horizontal space It corresponding, plays a role in filtering to the light passed through, i.e. 343 permission feux rouges of red filter film pass through, and green filter film 342 Green light is allowed to pass through, 341 permission blue lights of blue filter film pass through.Red filter film 343, green filter film 342 and blue filter The preparation means of light film 341 generally include pigment dispersion method, decoration method, print process and electricity method.

The one side of the close upper substrate 34 of green filter film 342 is coated with green light organic fluorescence transition material 344 (see figure 4).The luminescence peak of green light organic fluorescence transition material 344 is 520-530nm.Green light organic fluorescence transition material 344 is in 460- The wavelength period of 470nm has stronger light absorption, and the blue light in backlight that back light source structure 10 can be made to provide passes through luminescence generated by light Mode is completely reformed into green light (see Fig. 4), and passes through green filter film 342.Green light organic fluorescence transition material 344 for Compatible stronger, the long wavelength's blue light for the 460-470nm that can arrange in pairs or groups of different wave length blue-light LED chip, more healthy eyeshield；Together When use the relatively easy natural degradation of green light organic fluorescence transition material 344, will not be detrimental to health and environment, applicability By force.

As shown in connection with fig. 4, the blue light in the backlight of the offer of back light source structure 10 and feux rouges are by after red filter film 343 Remaining feux rouges, blue light and feux rouges pass through green filter film 342 by blue light remaining after blue filter film 341, blue light and feux rouges When, due to the green light organic fluorescence transition material 344 coated on green filter film 342, blue light can be completely reformed into green light, Thus pass through remaining green light after green filter film 342, and for relatively traditional display module, the backlight knot of the utility model For the backlight that structure 10 provides after the colored filter Jing Guo liquid crystal module 30, light intensity residue 1/2 greatly improves backlight Utilization rate improves brightness, and the excitation purity of the green light changed by green light organic fluorescence transition material 344 also compares tradition Display module have biggish promotion, and in the case where same brightness, energy consumption can be down to traditional display module 50%, it reduces costs.Simultaneously using the green light of the transformation of green light organic fluorescence transition material 344 and through red inorganic fluorescent powder The color saturation of the feux rouges of transformation, green light and feux rouges it is high, it can be achieved that 90% or more NTSC color gamut.

Fig. 5 is the curve comparison schematic diagram of the light spectrum of the rgb pixel point of the display module of LCD display device.Wherein Long dotted line in figure represents the display module of the utility model, and the back light source structure 10 of the display module is using luminescence peak The encapsulation glue-line containing red inorganic fluorescent powder of the blue-light LED chip+622nm of 460nm, liquid crystal module 30 use luminescence peak For the green light organic fluorescence transition material 344 of 530nm.The quality specific gravity of the opposite encapsulation glue-line of red inorganic fluorescent powder is 30%. And the short dash line in figure then represents traditional display module.In the curve comparison schematic diagram of light spectrum it can clearly be seen that The transmitance of the light issued by the display module of the utility model is higher, and monochromaticjty is more preferable, has higher luminous efficiency.

By above-mentioned display module, the LCD display device of the utility model may be implemented >=90% or even 100% NTSC color gamut, and the trichromatic excitation purity of RGB is greatly improved, performance is stablized, energy conservation, while the light transmittance of light is obtained It is promoted.

The LCD display device of the utility model and traditional LCD display device are compared, contrast effect such as following table It is shown:

As it can be seen that the LCD display device of the utility model be greatly improved light efficiency, brightness, color saturation, excitation purity, thoroughly Light rate and NTSC color gamut, practical, performance is stablized.

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 display module, the display module includes back light source structure and is arranged in backlight Liquid crystal module in structure, the back light source structure include multiple LED illuminating parts and optical functional film, the liquid crystal module packet The one side close to the upper polaroid of the upper polaroid for including upper substrate and being arranged on upper substrate, the upper substrate is equipped with coloured silk Colo(u)r filter, it is characterised in that: the LED illuminating part includes LED chip and is arranged in inorganic containing red in LED chip The encapsulation glue-line of fluorescent powder；The colored filter includes blue filter film, green filter film and red filter film, described green Color filter coating is coated with green light organic fluorescence transition material close to the one side of the upper substrate；The LED chip is blue-ray LED core Piece.

2. LCD display device according to claim 1, it is characterised in that: the hair of the green light organic fluorescence transition material Photopeak value is 520-530nm.

3. LCD display device according to claim 1, it is characterised in that: the luminescence peak of the red inorganic fluorescent powder For 615-625nm.

4. LCD display device according to claim 1, it is characterised in that: the relatively described envelope of the red inorganic fluorescent powder The mass ratio of dress glue-line focuses between 10%-40%.

5. LCD display device according to claim 1, it is characterised in that: the luminescence peak of the 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 liquid crystal module further includes being successively set on Down polaroid, lower substrate and liquid crystal layer on the back light source structure, the upper substrate setting is on the liquid crystal layer；It is described The one side close to the down polaroid of lower substrate is equipped with thin-film transistor circuit.

8. LCD display device according to claim 7, it is characterised in that: the close liquid crystal layer of the lower substrate , the upper substrate close to the liquid crystal layer while be equipped with groove structure；The groove structure is equipped with alignment film.

9. a kind of display module, including back light source structure and the liquid crystal module being arranged on back light source structure, the backlight Structure includes multiple LED illuminating parts and optical functional film, and the liquid crystal module includes upper substrate and is arranged on upper substrate Upper polaroid, the upper substrate close to the upper polaroid one side be equipped with colored filter, it is characterised in that: it is described LED illuminating part includes LED chip and the encapsulation glue-line containing red inorganic fluorescent powder that is arranged in LED chip；The coloured silk Colo(u)r filter includes blue filter film, green filter film and red filter film, and the green filter film is close to the upper substrate One side be coated with green light organic fluorescence transition material；The LED chip is blue-light LED chip.