WO2020168669A1 - Quantum dot liquid crystal display - Google Patents

Abstract

A quantum dot liquid crystal display, comprising: a backlight module and a liquid crystal display panel; the backlight module comprises a first quantum dot layer, and the liquid crystal display panel comprises a second quantum dot layer; the backlight module comprises at least a light guide plate, a low-refractive-index resin layer provided on a light-emitting side surface of the light guide plate, and the first quantum dot layer, and the first quantum dot layer is coated on the surface of the low-refractive-index resin layer or dotted, by means of screen printing on the lower surface of the light guide plate.

Description

Quantum dot liquid crystal display Technical field

This application relates to the field of display technology, and in particular to a quantum dot liquid crystal display.

Background technique

At present, due to the excellent properties of quantum dot material (Quantum Dot, QD), such as high color purity and continuous adjustable spectrum, it becomes the most excellent luminescent material in the 21st century, which can greatly improve the display color gamut of existing LCDs. Color performance, so its display applications have been widely studied in recent years. The existing QD-OC (quantum dot liquid crystal display panel) has the advantages of a large viewing angle and a high color gamut. However, the energy efficiency of the quantum dot liquid crystal display panel is lower and the cost is higher. The study found that the quantum dot film layer close to the backlight has the best luminous efficiency, so the quantum dot light guide plate has the highest theoretical excitation efficiency as the backlight source. However, due to the restriction of the dispersion of the quantum dot film layer by the resin system, the thickness of the quantum dot film layer is relatively high, and the quantum dot light guide plate structure of the screen-printed quantum dot film layer cannot meet the brightness requirements of the backlight module. All the above defects limit the industrial application of quantum dot liquid crystal display panels and quantum dot light guide plates.

To sum up, due to the low excitation efficiency of the quantum dot liquid crystal display panel, it is difficult for the existing quantum dot liquid crystal display to meet the ideal high color gamut, wide viewing angle, and high energy efficiency requirements, which further leads to poor display effects.

technical problem

The existing quantum dot liquid crystal display, due to the low excitation efficiency of the quantum dot liquid crystal display panel, is difficult to achieve the ideal high color gamut, wide viewing angle, and high energy efficiency requirements, which further leads to poor display effects.

Technical solutions

The present application provides a quantum dot liquid crystal display, which can improve the display effect of the quantum dot liquid crystal display to solve the problem of the low excitation efficiency of the quantum dot liquid crystal display panel, which is difficult to achieve the ideal high color gamut , Wide viewing angle, high energy efficiency requirements, further leading to technical problems of poor display effect.

To solve the above problems, the technical solutions provided by this application are as follows:

The present application provides a quantum dot liquid crystal display, including a backlight module and a liquid crystal display panel located above the backlight module, the backlight module includes a first quantum dot layer, and the liquid crystal display panel includes a second quantum dot Floor;

Wherein, the backlight module includes at least a light guide plate, a low-refractive index resin layer disposed on the light-exit side surface of the light guide plate, and the first quantum dot layer, and the first quantum dot layer is coated on the low-refractive The surface of the high-speed resin layer or the screen printing dots are on the lower surface of the light guide plate.

In the quantum dot liquid crystal display provided by the embodiment of the present application, the liquid crystal display panel includes the second quantum dot film layer, the lower polarizing layer, the TFT array substrate, the liquid crystal layer, the color film substrate and Upper polarizing layer.

In the quantum dot liquid crystal display provided by the embodiment of the application, the liquid crystal display panel includes the second quantum dot film layer, prism sheet, lower polarizing layer, TFT array substrate, liquid crystal layer, color Film substrate and upper polarizing layer.

In the quantum dot liquid crystal display provided by the embodiment of the present application, the liquid crystal display panel includes the second quantum dot film layer, a reflective polarizing brightness enhancement film, a lower polarizing layer, a TFT array substrate, Liquid crystal layer, color film substrate and upper polarizing layer.

In the quantum dot liquid crystal display provided by the embodiment of the present application, the liquid crystal display panel includes the second quantum dot film layer, prism sheet, reflective polarizing brightening film, lower polarizing layer, and TFT arranged from bottom to top. Array substrate, liquid crystal layer, color filter substrate and upper polarizing layer.

In the quantum dot liquid crystal display provided by the embodiment of the present application, the liquid crystal display panel includes a lower polarizing layer, a TFT array substrate, a liquid crystal layer, a color film substrate, the second quantum dot film layer and Upper polarizing layer.

In the quantum dot liquid crystal display provided by the embodiment of the present application, the liquid crystal display panel includes a third quantum dot film layer, a reflective polarizing brightness enhancement film, a lower polarizing layer, a TFT array substrate, and a liquid crystal layer arranged from bottom to top. , A color film substrate and an upper polarizing layer, the third quantum dot film layer is prepared by patterning the second quantum dot layer through screen printing or nanoimprinting methods.

In the quantum dot liquid crystal display provided by the embodiment of the present application, the materials of the first quantum dot film layer and the second quantum dot film layer include a polymer matrix and quantum dots dispersed in the polymer matrix.

In the quantum dot liquid crystal display provided by the embodiments of the present application, the polymer matrix is a resin transparent material, and the resin transparent material includes acrylic resin, epoxy resin, cycloolefin polymer, organosilane resin, and cellulose ester. One or more of the quantum dots; the quantum dots include a light-emitting core and an inorganic protective shell layer wrapped around the light-emitting core, and the red light material of the light-emitting core includes one of CdSe, Cd ₂ SeTe and InAs or The green material of the luminescent core includes one or more of ZnCdSe ₂ , InP, and Cd ₂ SSe; the inorganic protective shell layer includes one of CdS, ZnSe, ZnCdS ₂ , ZnS, and ZnO or Many kinds.

In the quantum dot liquid crystal display provided by the embodiment of the present application, the first quantum dot film layer and the second quantum dot film layer further include a high-stability composite quantum dot film structure, and the high-stability composite quantum dot film structure The dot film layer structure is loaded with hydrogel, MOFs or CdSe-SiO ₂ .

Beneficial effect

The beneficial effects of the present application are: the quantum dot liquid crystal display provided by the present application excites the liquid crystal display panel containing the quantum dot film layer above the quantum dot film layer on the backlight module, thereby increasing the viewing angle of the quantum dot liquid crystal display. The energy consumption of the quantum dot liquid crystal display is further reduced, and the display effect of the quantum dot liquid crystal display is further improved.

Description of the drawings

In order to explain the embodiments or the technical solutions in the prior art more clearly, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only for application. For some embodiments, those of ordinary skill in the art can obtain other drawings based on these drawings without creative work.

FIG. 1 is a schematic structural diagram of a first embodiment of a quantum dot liquid crystal display according to this application.

2 is a schematic structural diagram of a second embodiment of a quantum dot liquid crystal display according to this application.

FIG. 3 is a schematic structural diagram of a third embodiment of a quantum dot liquid crystal display according to this application.

4 is a schematic structural diagram of a fourth embodiment of a quantum dot liquid crystal display according to this application.

5 is a schematic structural diagram of a fifth embodiment of a quantum dot liquid crystal display according to this application.

FIG. 6 is a schematic structural diagram of a sixth embodiment of a quantum dot liquid crystal display of this application.

FIG. 7 is a schematic structural diagram of a seventh embodiment of a quantum dot liquid crystal display of this application.

FIG. 8 is a schematic structural diagram of an eighth embodiment of a quantum dot liquid crystal display according to this application.

FIG. 9 is a schematic structural diagram of a ninth embodiment of a quantum dot liquid crystal display according to this application.

FIG. 10 is a schematic structural diagram of a tenth embodiment of a quantum dot liquid crystal display according to this application.

FIG. 11 is a schematic structural diagram of an eleventh embodiment of a quantum dot liquid crystal display according to this application.

FIG. 12 is a schematic structural diagram of a twelfth embodiment of a quantum dot liquid crystal display according to this application.

Embodiments of the invention

The description of the following embodiments refers to the attached drawings to illustrate specific embodiments that can be implemented in this application. The directional terms mentioned in this application, such as [Up], [Down], [Front], [Back], [Left], [Right], [Inner], [Outer], [Side], etc., are for reference only The direction of the additional schema. Therefore, the directional terms used are used to illustrate and understand the application, rather than to limit the application. In the figure, units with similar structures are indicated by the same reference numerals.

This application is directed to the existing quantum dot liquid crystal display. Due to the low excitation efficiency of the quantum dot liquid crystal display panel, it is difficult to achieve the ideal high color gamut, wide viewing angle, and high energy efficiency requirements, which further leads to the technical problem of poor display effect. The embodiment can solve this defect.

As shown in FIG. 1, it is a schematic structural diagram of a first embodiment of a quantum dot liquid crystal display of this application. Wherein, the present application provides a quantum dot liquid crystal display, including: a backlight module 10 and a liquid crystal display panel 20 located above the backlight module 10; the backlight module 10 at least includes a light guide plate 11 arranged on the guide The low refractive index resin layer 12 and the first quantum dot layer 13 on the light emitting side surface of the light plate 11, the first quantum dot layer 13 is coated on the surface of the low refractive index resin layer 12; the liquid crystal display panel 20 It includes the second quantum dot film layer 21, the lower polarizing layer 22, the TFT array substrate 23, the liquid crystal layer 24, the color film substrate 25 and the upper polarizing layer 26 arranged from bottom to top.

Specifically, the materials of the first quantum dot film layer 13 and the second quantum dot film layer 21 include a polymer matrix and quantum dots dispersed in the polymer matrix.

Specifically, the polymer matrix is a resin transparent material, and the resin transparent material includes one or more of acrylic resin, epoxy resin, cycloolefin polymer, organosilane resin, and cellulose ester; The dot includes a light-emitting core and an inorganic protective shell layer wrapped around the light-emitting core, the red light material of the light-emitting core includes one or more of CdSe, Cd ₂ SeTe and InAs; the green light material of the light-emitting core It includes one or more of ZnCdSe ₂ , InP, and Cd ₂ SSe; the inorganic protective shell layer includes one or more of CdS, ZnSe, ZnCdS ₂ , ZnS, and ZnO.

Specifically, the first quantum dot film layer 13 and the second quantum dot film layer 21 further include a high stability composite quantum dot film structure, and the high stability composite quantum dot film structure is loaded with a hydrogel , MOFs or CdSe-SiO ₂ .

Specifically, when light is emitted through the light exit side of the light guide plate 11, the excitation light with a narrower half-height width is excited after passing through the first quantum dot film layer 13, and then passes through the second quantum dot film layer 21 Exciting excitation light with a narrower half-height width can increase the color gamut of the display device and improve picture quality. This is because the quantum dot itself has the ability to convert light. When excited by blue light, an electron transition occurs, and then the electron-hole recombination is completed in the form of fluorescent radiation; as a typical zero-dimensional nanomaterial, the quantum dot is uniform in all directions. It has a size within the quantum confinement range, so its fluorescent radiation has no direction selectivity. After being excited, it can radiate the fluorescent light at 360° without difference, which can effectively balance the brightness of each viewing angle of the liquid crystal display.

As shown in FIG. 2, it is a schematic structural diagram of a second embodiment of a quantum dot liquid crystal display of this application. Wherein, the present application provides another quantum dot liquid crystal display, including: a backlight module 10 and a liquid crystal display panel 20 located above the backlight module 10, the backlight module 10 at least includes a light guide plate 11, arranged on the The low refractive index resin layer 12 on the light exit side surface of the light guide plate 11 and the first quantum dot layer 13, the first quantum dot layer 13 is coated on the surface of the low refractive index resin layer 12; the liquid crystal display panel 20 includes the second quantum dot film layer 21, the prism sheet 27, the lower polarizing layer 22, the TFT array substrate 23, the liquid crystal layer 24, the color film substrate 25, and the upper polarizing layer 26 arranged from bottom to top.

Specifically, the materials of the first quantum dot film layer 13 and the second quantum dot film layer 21 include a polymer matrix and quantum dots dispersed in the polymer matrix.

Specifically, the polymer matrix is a resin transparent material, and the resin transparent material includes one or more of acrylic resin, epoxy resin, cycloolefin polymer, organosilane resin, and cellulose ester; The dot includes a light-emitting core and an inorganic protective shell layer wrapped around the light-emitting core, the red light material of the light-emitting core includes one or more of CdSe, Cd ₂ SeTe and InAs; the green light material of the light-emitting core It includes one or more of ZnCdSe ₂ , InP, and Cd ₂ SSe; the inorganic protective shell layer includes one or more of CdS, ZnSe, ZnCdS ₂ , ZnS, and ZnO.

Specifically, the first quantum dot film layer 13 and the second quantum dot film layer 21 further include a high stability composite quantum dot film structure, and the high stability composite quantum dot film structure is loaded with a hydrogel , MOFs or CdSe-SiO ₂ .

Specifically, when light is emitted through the light exit side of the light guide plate 11, the excitation light with a narrower half-height width is excited after passing through the first quantum dot film layer 13, and then passes through the second quantum dot film layer 21 Exciting excitation light with a narrower half-height width can increase the color gamut of the display device and improve picture quality. This is because the quantum dot itself has the ability to convert light. When excited by blue light, an electron transition occurs, and then the electron-hole recombination is completed in the form of fluorescent radiation; as a typical zero-dimensional nanomaterial, the quantum dot is uniform in all directions. It has a size within the quantum confinement range, so its fluorescent radiation has no direction selectivity. After being excited, it can radiate the fluorescent light at 360° without difference, which can effectively balance the brightness of each viewing angle of the liquid crystal display.

As shown in FIG. 3, it is a schematic structural diagram of a third embodiment of a quantum dot liquid crystal display of this application. Wherein, the present application provides another quantum dot liquid crystal display, including: a backlight module 10 and a liquid crystal display panel 20 located above the backlight module 10, the backlight module 10 at least includes a light guide plate 11, arranged on the The low refractive index resin layer 12 on the light exit side surface of the light guide plate 11 and the first quantum dot layer 13, the first quantum dot layer 13 is coated on the surface of the low refractive index resin layer 12; the liquid crystal display panel 20 includes the second quantum dot film layer 21, the reflective polarizing brightness enhancement film 28, the lower polarizing layer 22, the TFT array substrate 23, the liquid crystal layer 24, the color film substrate 25, and the upper polarizing layer 26 arranged from bottom to top.

Specifically, the materials of the first quantum dot film layer 13 and the second quantum dot film layer 21 include a polymer matrix and quantum dots dispersed in the polymer matrix.

Specifically, the polymer matrix is a resin transparent material, and the resin transparent material includes one or more of acrylic resin, epoxy resin, cycloolefin polymer, organosilane resin, and cellulose ester; The dot includes a light-emitting core and an inorganic protective shell layer wrapped around the light-emitting core, the red light material of the light-emitting core includes one or more of CdSe, Cd ₂ SeTe and InAs; the green light material of the light-emitting core It includes one or more of ZnCdSe ₂ , InP, and Cd ₂ SSe; the inorganic protective shell layer includes one or more of CdS, ZnSe, ZnCdS ₂ , ZnS, and ZnO.

Specifically, the first quantum dot film layer 13 and the second quantum dot film layer 21 further include a high stability composite quantum dot film structure, and the high stability composite quantum dot film structure is loaded with a hydrogel , MOFs or CdSe-SiO ₂ .

Specifically, when light is emitted through the light exit side of the light guide plate 11, the excitation light with a narrower half-height width is excited after passing through the first quantum dot film layer 13, and then passes through the second quantum dot film layer 21 Exciting excitation light with a narrower half-height width can increase the color gamut of the display device and improve picture quality. This is because the quantum dot itself has the ability to convert light. When excited by blue light, an electron transition occurs, and then the electron-hole recombination is completed in the form of fluorescent radiation; as a typical zero-dimensional nanomaterial, the quantum dot is uniform in all directions. It has a size within the quantum confinement range, so its fluorescent radiation has no direction selectivity. After being excited, it can radiate the fluorescent light at 360° without difference, which can effectively balance the brightness of each viewing angle of the liquid crystal display.

As shown in FIG. 4, it is a schematic structural diagram of a fourth embodiment of a quantum dot liquid crystal display of this application. Wherein, the present application provides another quantum dot liquid crystal display, including: a backlight module 10 and a liquid crystal display panel 20 located above the backlight module 10, the backlight module 10 at least includes a light guide plate 11, arranged on the The low refractive index resin layer 12 on the light exit side surface of the light guide plate 11 and the first quantum dot layer 13, the first quantum dot layer 13 is coated on the surface of the low refractive index resin layer 12; the liquid crystal display panel 20 includes the second quantum dot film layer 21, the prism sheet 27, the reflective polarizing brightness enhancement film 28, the lower polarizing layer 22, the TFT array substrate 23, the liquid crystal layer 24, the color film substrate 25, and the upper Polarization layer 26.

Specifically, the materials of the first quantum dot film layer 13 and the second quantum dot film layer 21 include a polymer matrix and quantum dots dispersed in the polymer matrix.

Specifically, the polymer matrix is a resin transparent material, and the resin transparent material includes one or more of acrylic resin, epoxy resin, cycloolefin polymer, organosilane resin, and cellulose ester; The dot includes a light-emitting core and an inorganic protective shell layer wrapped around the light-emitting core, the red light material of the light-emitting core includes one or more of CdSe, Cd ₂ SeTe and InAs; the green light material of the light-emitting core It includes one or more of ZnCdSe ₂ , InP, and Cd ₂ SSe; the inorganic protective shell layer includes one or more of CdS, ZnSe, ZnCdS ₂ , ZnS, and ZnO.

Specifically, the first quantum dot film layer 13 and the second quantum dot film layer 21 further include a high stability composite quantum dot film structure, and the high stability composite quantum dot film structure is loaded with a hydrogel , MOFs or CdSe-SiO ₂ .

Specifically, when light is emitted through the light exit side of the light guide plate 11, the excitation light with a narrower half-height width is excited after passing through the first quantum dot film layer 13, and then passes through the second quantum dot film layer 21 Exciting excitation light with a narrower half-height width can increase the color gamut of the display device and improve picture quality. This is because the quantum dot itself has the ability to convert light. When excited by blue light, an electron transition occurs, and then the electron-hole recombination is completed in the form of fluorescent radiation; as a typical zero-dimensional nanomaterial, the quantum dot is uniform in all directions. It has a size within the quantum confinement range, so its fluorescent radiation has no direction selectivity. After being excited, it can radiate the fluorescent light at 360° without difference, which can effectively balance the brightness of each viewing angle of the liquid crystal display.

As shown in FIG. 5, it is a schematic structural diagram of a fifth embodiment of a quantum dot liquid crystal display of this application. Wherein, the present application provides another quantum dot liquid crystal display, including: a backlight module 10 and a liquid crystal display panel 20 located above the backlight module 10, the backlight module 10 at least includes a light guide plate 11, arranged on the The low refractive index resin layer 12 on the light exit side surface of the light guide plate 11 and the first quantum dot layer 13, the first quantum dot layer 13 is coated on the surface of the low refractive index resin layer 12; the liquid crystal display panel 20 includes a lower polarizing layer 22, a TFT array substrate 23, a liquid crystal layer 24, a color filter substrate 25, the second quantum dot film layer 21 and an upper polarizing layer 26 arranged from bottom to top.

Specifically, the materials of the first quantum dot film layer 13 and the second quantum dot film layer 21 include a polymer matrix and quantum dots dispersed in the polymer matrix.

Specifically, the polymer matrix is a resin transparent material, and the resin transparent material includes one or more of acrylic resin, epoxy resin, cycloolefin polymer, organosilane resin, and cellulose ester; The dot includes a light-emitting core and an inorganic protective shell layer wrapped around the light-emitting core, the red light material of the light-emitting core includes one or more of CdSe, Cd ₂ SeTe and InAs; the green light material of the light-emitting core It includes one or more of ZnCdSe ₂ , InP, and Cd ₂ SSe; the inorganic protective shell layer includes one or more of CdS, ZnSe, ZnCdS ₂ , ZnS, and ZnO.

Specifically, the first quantum dot film layer 13 and the second quantum dot film layer 21 further include a high stability composite quantum dot film structure, and the high stability composite quantum dot film structure is loaded with a hydrogel , MOFs or CdSe-SiO ₂ .

Specifically, when light is emitted through the light exit side of the light guide plate 11, the excitation light with a narrower half-height width is excited after passing through the first quantum dot film layer 13, and then passes through the second quantum dot film layer 21 Exciting excitation light with a narrower half-height width can increase the color gamut of the display device and improve picture quality. This is because the quantum dot itself has the ability to convert light. When excited by blue light, an electron transition occurs, and then the electron-hole recombination is completed in the form of fluorescent radiation; as a typical zero-dimensional nanomaterial, the quantum dot is uniform in all directions. It has a size within the quantum confinement range, so its fluorescent radiation has no direction selectivity. After being excited, it can radiate the fluorescent light at 360° without difference, which can effectively balance the brightness of each viewing angle of the liquid crystal display.

As shown in FIG. 6, it is a schematic structural diagram of a sixth embodiment of a quantum dot liquid crystal display of this application. Wherein, the present application provides another quantum dot liquid crystal display, including: a backlight module 10 and a liquid crystal display panel 20 located above the backlight module 10, the backlight module 10 at least includes a light guide plate 11, arranged on the The low refractive index resin layer 12 on the light exit side surface of the light guide plate 11 and the first quantum dot layer 13, the first quantum dot layer 13 is coated on the surface of the low refractive index resin layer 12; the liquid crystal display panel 20 includes a third quantum dot film layer 29, a reflective polarizing brightness enhancement film 28, a lower polarizing layer 22, a TFT array substrate 23, a liquid crystal layer 24, a color film substrate 25, and an upper polarizing layer 26 arranged from bottom to top. The third quantum dot film layer 29 is prepared by patterning the second quantum dot layer 21 through screen printing or nanoimprinting.

Specifically, the materials of the first quantum dot film layer 13 and the second quantum dot film layer 21 include a polymer matrix and quantum dots dispersed in the polymer matrix.

Specifically, the polymer matrix is a resin transparent material, and the resin transparent material includes one or more of acrylic resin, epoxy resin, cycloolefin polymer, organosilane resin, and cellulose ester; The dot includes a light-emitting core and an inorganic protective shell layer wrapped around the light-emitting core, the red light material of the light-emitting core includes one or more of CdSe, Cd ₂ SeTe and InAs; the green light material of the light-emitting core It includes one or more of ZnCdSe ₂ , InP, and Cd ₂ SSe; the inorganic protective shell layer includes one or more of CdS, ZnSe, ZnCdS ₂ , ZnS, and ZnO.

Specifically, the first quantum dot film layer 13 and the second quantum dot film layer 21 further include a high stability composite quantum dot film structure, and the high stability composite quantum dot film structure is loaded with a hydrogel , MOFs or CdSe-SiO ₂ .

Specifically, when light is emitted through the light exit side of the light guide plate 11, the excitation light with a narrower half-height width is excited after passing through the first quantum dot film layer 13, and then passes through the second quantum dot film layer 21 Exciting excitation light with a narrower half-height width can increase the color gamut of the display device and improve picture quality. This is because the quantum dot itself has the ability to convert light. When excited by blue light, an electron transition occurs, and then the electron-hole recombination is completed in the form of fluorescent radiation; as a typical zero-dimensional nanomaterial, the quantum dot is uniform in all directions. It has a size within the quantum confinement range, so its fluorescent radiation has no direction selectivity. After being excited, it can radiate the fluorescent light at 360° without difference, which can effectively balance the brightness of each viewing angle of the liquid crystal display.

As shown in FIG. 7, it is a schematic structural diagram of a seventh embodiment of a quantum dot liquid crystal display of this application. Wherein, the present application provides a quantum dot liquid crystal display, comprising: a backlight module 10 and a liquid crystal display panel 20 located above the backlight module 10, the backlight module 10 at least includes a light guide plate 11 arranged on the The low refractive index resin layer 12 on the light-emitting side surface of the light plate 11 and the first quantum dot layer 13, the first quantum dot film layer 13 is dotted on the lower surface of the light guide plate 11 by screen printing; the liquid crystal display The panel 20 includes the second quantum dot film layer 21, a lower polarizing layer 22, a TFT array substrate 23, a liquid crystal layer 24, a color film substrate 25 and an upper polarizing layer 26 arranged from bottom to top.

Specifically, the materials of the first quantum dot film layer 13 and the second quantum dot film layer 21 include a polymer matrix and quantum dots dispersed in the polymer matrix.

Specifically, the polymer matrix is a resin transparent material, and the resin transparent material includes one or more of acrylic resin, epoxy resin, cycloolefin polymer, organosilane resin, and cellulose ester; The dot includes a light-emitting core and an inorganic protective shell layer wrapped around the light-emitting core, the red light material of the light-emitting core includes one or more of CdSe, Cd ₂ SeTe and InAs; the green light material of the light-emitting core It includes one or more of ZnCdSe ₂ , InP, and Cd ₂ SSe; the inorganic protective shell layer includes one or more of CdS, ZnSe, ZnCdS ₂ , ZnS, and ZnO.

Specifically, the first quantum dot film layer 13 and the second quantum dot film layer 21 further include a high stability composite quantum dot film structure, and the high stability composite quantum dot film structure is loaded with a hydrogel , MOFs or CdSe-SiO ₂ .

Specifically, when light is emitted through the light exit side of the light guide plate 11, the excitation light with a narrower half-height width is excited after passing through the first quantum dot film layer 13, and then passes through the second quantum dot film layer 21 Exciting excitation light with a narrower half-height width can increase the color gamut of the display device and improve picture quality. This is because the quantum dot itself has the ability to convert light. When excited by blue light, an electron transition occurs, and then the electron-hole recombination is completed in the form of fluorescent radiation; as a typical zero-dimensional nanomaterial, the quantum dot is uniform in all directions. It has a size within the quantum confinement range, so its fluorescent radiation has no direction selectivity. After being excited, it can radiate the fluorescent light at 360° without difference, which can effectively balance the brightness of each viewing angle of the liquid crystal display.

As shown in FIG. 8, it is a schematic structural diagram of an eighth embodiment of a quantum dot liquid crystal display of this application. Wherein, the present application provides another quantum dot liquid crystal display, including: a backlight module 10 and a liquid crystal display panel 20 located above the backlight module 10; the backlight module 10 at least includes a light guide plate 11, which is arranged on the The low refractive index resin layer 12 on the light-emitting side surface of the light guide plate 11 and the first quantum dot layer 13, the first quantum dot film layer 13 is dotted on the lower surface of the light guide plate 11 by screen printing; the liquid crystal The display panel 20 includes the second quantum dot film layer 21, the prism sheet 27, the lower polarizing layer 22, the TFT array substrate 23, the liquid crystal layer 24, the color film substrate 25 and the upper polarizing layer 26 arranged from bottom to top.

Specifically, the materials of the first quantum dot film layer 13 and the second quantum dot film layer 21 include a polymer matrix and quantum dots dispersed in the polymer matrix.

Specifically, the polymer matrix is a resin transparent material, and the resin transparent material includes one or more of acrylic resin, epoxy resin, cycloolefin polymer, organosilane resin, and cellulose ester; The dot includes a light-emitting core and an inorganic protective shell layer wrapped around the light-emitting core, the red light material of the light-emitting core includes one or more of CdSe, Cd ₂ SeTe and InAs; the green light material of the light-emitting core It includes one or more of ZnCdSe ₂ , InP, and Cd ₂ SSe; the inorganic protective shell layer includes one or more of CdS, ZnSe, ZnCdS ₂ , ZnS, and ZnO.

Specifically, the first quantum dot film layer 13 and the second quantum dot film layer 21 further include a high stability composite quantum dot film structure, and the high stability composite quantum dot film structure is loaded with a hydrogel , MOFs or CdSe-SiO ₂ .

Specifically, when light is emitted through the light exit side of the light guide plate 11, the excitation light with a narrower half-height width is excited after passing through the first quantum dot film layer 13, and then passes through the second quantum dot film layer 21 Exciting excitation light with a narrower half-height width can increase the color gamut of the display device and improve picture quality. This is because the quantum dot itself has the ability to convert light. When excited by blue light, an electron transition occurs, and then the electron-hole recombination is completed in the form of fluorescent radiation; as a typical zero-dimensional nanomaterial, the quantum dot is uniform in all directions. It has a size within the quantum confinement range, so its fluorescent radiation has no direction selectivity. After being excited, it can radiate the fluorescent light at 360° without difference, which can effectively balance the brightness of each viewing angle of the liquid crystal display.

As shown in FIG. 9, it is a schematic structural diagram of a ninth embodiment of a quantum dot liquid crystal display of this application. Wherein, the present application provides another quantum dot liquid crystal display, including: a backlight module 10 and a liquid crystal display panel 20 located above the backlight module 10, the backlight module 10 at least includes a light guide plate 11, arranged on the The low refractive index resin layer 12 on the light-emitting side surface of the light guide plate 11 and the first quantum dot layer 13; the first quantum dot film layer 13 is dotted on the lower surface of the light guide plate 11 by screen printing; the liquid crystal The display panel 20 includes the second quantum dot film layer 21, the reflective polarizing brightness enhancement film 28, the lower polarizing layer 22, the TFT array substrate 23, the liquid crystal layer 24, the color film substrate 25, and the upper polarizing layer arranged from bottom to top. 26.

Specifically, the materials of the first quantum dot film layer 13 and the second quantum dot film layer 21 include a polymer matrix and quantum dots dispersed in the polymer matrix.

Specifically, the polymer matrix is a resin transparent material, and the resin transparent material includes one or more of acrylic resin, epoxy resin, cycloolefin polymer, organosilane resin, and cellulose ester; The dot includes a light-emitting core and an inorganic protective shell layer wrapped around the light-emitting core, the red light material of the light-emitting core includes one or more of CdSe, Cd ₂ SeTe and InAs; the green light material of the light-emitting core It includes one or more of ZnCdSe ₂ , InP, and Cd ₂ SSe; the inorganic protective shell layer includes one or more of CdS, ZnSe, ZnCdS ₂ , ZnS, and ZnO.

Specifically, the first quantum dot film layer 13 and the second quantum dot film layer 21 further include a high stability composite quantum dot film structure, and the high stability composite quantum dot film structure is loaded with a hydrogel , MOFs or CdSe-SiO ₂ .

Specifically, when light is emitted through the light exit side of the light guide plate 11, the excitation light with a narrower half-height width is excited after passing through the first quantum dot film layer 13, and then passes through the second quantum dot film layer 21 Exciting excitation light with a narrower half-height width can increase the color gamut of the display device and improve picture quality. This is because the quantum dot itself has the ability to convert light. When excited by blue light, an electron transition occurs, and then the electron-hole recombination is completed in the form of fluorescent radiation; as a typical zero-dimensional nanomaterial, the quantum dot is uniform in all directions. It has a size within the quantum confinement range, so its fluorescent radiation has no direction selectivity. After being excited, it can radiate the fluorescent light at 360° without difference, which can effectively balance the brightness of each viewing angle of the liquid crystal display.

As shown in FIG. 10, it is a schematic structural diagram of a tenth embodiment of a quantum dot liquid crystal display of this application. Wherein, the present application provides another quantum dot liquid crystal display, comprising: a backlight module 10 and a liquid crystal display panel 20 located above the backlight module 10, the backlight module 10 at least includes a light guide plate 11, which is arranged on the The low refractive index resin layer 12 on the light-emitting side surface of the light guide plate 11 and the first quantum dot layer 13, the first quantum dot film layer 13 is dotted on the lower surface of the light guide plate 11 by screen printing; the liquid crystal The display panel 20 includes the second quantum dot film layer 21, the prism sheet 27, the reflective polarizing brightness enhancement film 28, the lower polarizing layer 22, the TFT array substrate 23, the liquid crystal layer 24, and the color film substrate 25 arranged from bottom to top. And the upper polarizing layer 26.

Specifically, the materials of the first quantum dot film layer 13 and the second quantum dot film layer 21 include a polymer matrix and quantum dots dispersed in the polymer matrix.

Specifically, the polymer matrix is a resin transparent material, and the resin transparent material includes one or more of acrylic resin, epoxy resin, cycloolefin polymer, organosilane resin, and cellulose ester; The dot includes a light-emitting core and an inorganic protective shell layer wrapped around the light-emitting core, the red light material of the light-emitting core includes one or more of CdSe, Cd ₂ SeTe and InAs; the green light material of the light-emitting core It includes one or more of ZnCdSe ₂ , InP, and Cd ₂ SSe; the inorganic protective shell layer includes one or more of CdS, ZnSe, ZnCdS ₂ , ZnS, and ZnO.

Specifically, the first quantum dot film layer 13 and the second quantum dot film layer 21 further include a high stability composite quantum dot film structure, and the high stability composite quantum dot film structure is loaded with a hydrogel , MOFs or CdSe-SiO ₂ .

Specifically, when light is emitted through the light exit side of the light guide plate 11, the excitation light with a narrower half-height width is excited after passing through the first quantum dot film layer 13, and then passes through the second quantum dot film layer 21 Exciting excitation light with a narrower half-height width can increase the color gamut of the display device and improve picture quality. This is because the quantum dot itself has the ability to convert light. When excited by blue light, an electron transition occurs, and then the electron-hole recombination is completed in the form of fluorescent radiation; as a typical zero-dimensional nanomaterial, the quantum dot is uniform in all directions. It has a size within the quantum confinement range, so its fluorescent radiation has no direction selectivity. After being excited, it can radiate the fluorescent light at 360° without difference, which can effectively balance the brightness of each viewing angle of the liquid crystal display.

As shown in FIG. 11, it is a schematic structural diagram of an eleventh embodiment of a quantum dot liquid crystal display of this application. Wherein, the present application provides another quantum dot liquid crystal display, including: a backlight module 10 and a liquid crystal display panel 20 located above the backlight module 10, the backlight module 10 at least includes a light guide plate 11, arranged on the The low refractive index resin layer 12 on the light-emitting side surface of the light guide plate 11 and the first quantum dot layer 13, the first quantum dot film layer 13 is dotted on the lower surface of the light guide plate 11 by screen printing; the liquid crystal The display panel 20 includes a lower polarizing layer 22, a TFT array substrate 23, a liquid crystal layer 24, a color filter substrate 25, the second quantum dot film layer 21 and an upper polarizing layer 26 arranged from bottom to top.

Specifically, the materials of the first quantum dot film layer 13 and the second quantum dot film layer 21 include a polymer matrix and quantum dots dispersed in the polymer matrix.

Specifically, the polymer matrix is a resin transparent material, and the resin transparent material includes one or more of acrylic resin, epoxy resin, cycloolefin polymer, organosilane resin, and cellulose ester; The dot includes a light-emitting core and an inorganic protective shell layer wrapped around the light-emitting core, the red light material of the light-emitting core includes one or more of CdSe, Cd ₂ SeTe and InAs; the green light material of the light-emitting core It includes one or more of ZnCdSe ₂ , InP, and Cd ₂ SSe; the inorganic protective shell layer includes one or more of CdS, ZnSe, ZnCdS ₂ , ZnS, and ZnO.

Specifically, the first quantum dot film layer 13 and the second quantum dot film layer 21 further include a high stability composite quantum dot film structure, and the high stability composite quantum dot film structure is loaded with a hydrogel , MOFs or CdSe-SiO ₂ .

Specifically, when light is emitted through the light exit side of the light guide plate 11, the excitation light with a narrower half-height width is excited after passing through the first quantum dot film layer 13, and then passes through the second quantum dot film layer 21 Exciting excitation light with a narrower half-height width can increase the color gamut of the display device and improve picture quality. This is because the quantum dot itself has the ability to convert light. When excited by blue light, an electron transition occurs, and then the electron-hole recombination is completed in the form of fluorescent radiation; as a typical zero-dimensional nanomaterial, the quantum dot is uniform in all directions. It has a size within the quantum confinement range, so its fluorescent radiation has no direction selectivity. After being excited, it can radiate the fluorescent light at 360° without difference, thereby effectively balancing the brightness of each viewing angle of the liquid crystal display.

As shown in FIG. 12, it is a schematic structural diagram of a twelfth embodiment of a quantum dot liquid crystal display of this application. Wherein, the present application provides another quantum dot liquid crystal display, including: a backlight module 10 and a liquid crystal display panel 20 located above the backlight module 10, the backlight module 10 at least includes a light guide plate 11, arranged on the The low refractive index resin layer 12 on the light-emitting side surface of the light guide plate 11 and the first quantum dot layer 13, the first quantum dot film layer 13 is dotted on the lower surface of the light guide plate 11 by screen printing; the liquid crystal The display panel 20 includes a third quantum dot film layer 29, a reflective polarizing brightness enhancement film 28, a lower polarizing layer 22, a TFT array substrate 23, a liquid crystal layer 24, a color film substrate 25, and an upper polarizing layer 26 arranged from bottom to top. The third quantum dot film layer 29 is prepared by patterning the second quantum dot layer 21 through screen printing or nanoimprinting methods.

Specifically, the materials of the first quantum dot film layer 13 and the second quantum dot film layer 21 include a polymer matrix and quantum dots dispersed in the polymer matrix.

Specifically, the polymer matrix is a resin transparent material, and the resin transparent material includes one or more of acrylic resin, epoxy resin, cycloolefin polymer, organosilane resin, and cellulose ester; The dot includes a light-emitting core and an inorganic protective shell layer wrapped around the light-emitting core, the red light material of the light-emitting core includes one or more of CdSe, Cd ₂ SeTe and InAs; the green light material of the light-emitting core It includes one or more of ZnCdSe ₂ , InP, and Cd ₂ SSe; the inorganic protective shell layer includes one or more of CdS, ZnSe, ZnCdS ₂ , ZnS, and ZnO.

Specifically, the first quantum dot film layer 13 and the second quantum dot film layer 21 further include a high stability composite quantum dot film structure, and the high stability composite quantum dot film structure is loaded with a hydrogel , MOFs or CdSe-SiO ₂ .

Specifically, when light is emitted through the light exit side of the light guide plate 11, the excitation light with a narrower half-height width is excited after passing through the first quantum dot film layer 13, and then passes through the second quantum dot film layer 21 Exciting excitation light with a narrower half-height width can increase the color gamut of the display device and improve picture quality. This is because the quantum dot itself has the ability to convert light. When excited by blue light, an electron transition occurs, and then the electron-hole recombination is completed in the form of fluorescent radiation; as a typical zero-dimensional nanomaterial, the quantum dot is uniform in all directions. It has a size within the quantum confinement range, so its fluorescent radiation has no direction selectivity. After being excited, it can radiate the fluorescent light at 360° without difference, which can effectively balance the brightness of each viewing angle of the liquid crystal display.

This application designs a quantum dot liquid crystal display, which uses a quantum dot light guide plate structure to excite a quantum dot liquid crystal display panel, and obtains a quantum dot display with high color gamut, wide viewing angle, low energy consumption and suitable for mass production. Among them, the quantum dot luminescent material uses a high-stability composite quantum dot film structure, which is loaded with hydrogel, MOFs or CdSe-SiO _2. The common feature of these materials is that they have barriers. The effect of improving water and oxygen and drug resistance, saving barrier film and reducing cost.

The beneficial effects of the present application are: the quantum dot liquid crystal display provided by the present application excites the liquid crystal display panel containing the quantum dot film layer above the quantum dot film layer on the backlight module, thereby increasing the viewing angle of the quantum dot liquid crystal display. The energy consumption of the quantum dot liquid crystal display is further reduced, and the display effect of the quantum dot liquid crystal display is further improved.

In summary, although the application has been disclosed as above in preferred embodiments, the above-mentioned preferred embodiments are not intended to limit the application, and those of ordinary skill in the art can make various decisions without departing from the spirit and scope of the application. Such changes and modifications, so the protection scope of this application is subject to the scope defined by the claims.

Claims (10)

1. A quantum dot liquid crystal display, comprising: a backlight module and a liquid crystal display panel located above the backlight module, the backlight module includes a first quantum dot layer, and the liquid crystal display panel includes a second quantum dot layer ；

   Wherein, the backlight module includes at least a light guide plate, a low-refractive index resin layer disposed on the light-exit side surface of the light guide plate, and the first quantum dot layer, and the first quantum dot layer is coated on the low-refractive The surface of the high-speed resin layer or the screen printing dots are on the lower surface of the light guide plate.
2. The quantum dot liquid crystal display according to claim 1, wherein the liquid crystal display panel comprises the second quantum dot film layer, a lower polarizing layer, a TFT array substrate, a liquid crystal layer, a color film substrate and Upper polarizing layer.
3. The quantum dot liquid crystal display according to claim 1, wherein the liquid crystal display panel comprises the second quantum dot film layer, prism sheet, lower polarizing layer, TFT array substrate, liquid crystal layer, color Film substrate and upper polarizing layer.
4. The quantum dot liquid crystal display according to claim 1, wherein the liquid crystal display panel comprises the second quantum dot film layer, a reflective polarizing brightness enhancement film, a lower polarizing layer, a TFT array substrate, Liquid crystal layer, color film substrate and upper polarizing layer.
5. The quantum dot liquid crystal display according to claim 1, wherein the liquid crystal display panel comprises the second quantum dot film layer, prism sheet, reflective polarizing brightness enhancement film, lower polarizing layer, TFT arranged from bottom to top. Array substrate, liquid crystal layer, color filter substrate and upper polarizing layer.
6. The quantum dot liquid crystal display according to claim 1, wherein the liquid crystal display panel comprises a lower polarizing layer, a TFT array substrate, a liquid crystal layer, a color film substrate, the second quantum dot film layer and Upper polarizing layer.
7. The quantum dot liquid crystal display according to claim 1, wherein the liquid crystal display panel comprises a third quantum dot film layer, a reflective polarizing brightness enhancement film, a lower polarizing layer, a TFT array substrate, and a liquid crystal layer arranged from bottom to top. , A color film substrate and an upper polarizing layer, the third quantum dot film layer is prepared by patterning the second quantum dot layer through a screen printing or nanoimprinting method.
8. 2. The quantum dot liquid crystal display of claim 1, wherein the materials of the first quantum dot film layer and the second quantum dot film layer include a polymer matrix and quantum dots dispersed in the polymer matrix.
9. The quantum dot liquid crystal display according to claim 8, wherein the polymer matrix is a resin transparent material, and the resin transparent material includes acrylic resin, epoxy resin, cycloolefin polymer, organosilane resin, and cellulose ester One or more of the quantum dots; the quantum dots include a light-emitting core and an inorganic protective shell layer wrapped around the light-emitting core, and the red light material of the light-emitting core includes one of CdSe, Cd ₂ SeTe and InAs or The green material of the luminescent core includes one or more of ZnCdSe ₂ , InP, and Cd ₂ SSe; the inorganic protective shell layer includes one of CdS, ZnSe, ZnCdS ₂ , ZnS, and ZnO or Many kinds.
10. 8. The quantum dot liquid crystal display according to claim 8, wherein the first quantum dot film layer and the second quantum dot film layer further comprise a high stability composite quantum dot film structure, and the high stability composite quantum dot The dot film layer structure is loaded with hydrogel, MOFs or CdSe-SiO ₂ .