CN114253032B - Liquid crystal display device having a light shielding layer - Google Patents
Liquid crystal display device having a light shielding layer Download PDFInfo
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- CN114253032B CN114253032B CN202111580699.XA CN202111580699A CN114253032B CN 114253032 B CN114253032 B CN 114253032B CN 202111580699 A CN202111580699 A CN 202111580699A CN 114253032 B CN114253032 B CN 114253032B
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 83
- 239000002096 quantum dot Substances 0.000 claims abstract description 66
- 239000011358 absorbing material Substances 0.000 claims abstract description 29
- 238000006386 neutralization reaction Methods 0.000 claims description 55
- 238000009792 diffusion process Methods 0.000 claims description 31
- 239000000463 material Substances 0.000 claims description 27
- 239000000203 mixture Substances 0.000 claims description 16
- 239000000758 substrate Substances 0.000 claims description 9
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 8
- 239000002245 particle Substances 0.000 claims description 7
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 6
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 6
- 239000001046 green dye Substances 0.000 claims description 6
- AJDUTMFFZHIJEM-UHFFFAOYSA-N n-(9,10-dioxoanthracen-1-yl)-4-[4-[[4-[4-[(9,10-dioxoanthracen-1-yl)carbamoyl]phenyl]phenyl]diazenyl]phenyl]benzamide Chemical compound O=C1C2=CC=CC=C2C(=O)C2=C1C=CC=C2NC(=O)C(C=C1)=CC=C1C(C=C1)=CC=C1N=NC(C=C1)=CC=C1C(C=C1)=CC=C1C(=O)NC1=CC=CC2=C1C(=O)C1=CC=CC=C1C2=O AJDUTMFFZHIJEM-UHFFFAOYSA-N 0.000 claims description 6
- 239000001044 red dye Substances 0.000 claims description 6
- 239000001043 yellow dye Substances 0.000 claims description 6
- 239000000843 powder Substances 0.000 claims description 4
- 239000005083 Zinc sulfide Substances 0.000 claims description 3
- 229910052984 zinc sulfide Inorganic materials 0.000 claims description 3
- DRDVZXDWVBGGMH-UHFFFAOYSA-N zinc;sulfide Chemical compound [S-2].[Zn+2] DRDVZXDWVBGGMH-UHFFFAOYSA-N 0.000 claims description 3
- 108010043121 Green Fluorescent Proteins Proteins 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 15
- 239000010410 layer Substances 0.000 description 9
- 230000003472 neutralizing effect Effects 0.000 description 9
- 230000005284 excitation Effects 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 4
- 238000002955 isolation Methods 0.000 description 4
- 239000011159 matrix material Substances 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000012790 adhesive layer Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
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Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
- G02F1/133607—Direct backlight including a specially adapted diffusing, scattering or light controlling members the light controlling member including light directing or refracting elements, e.g. prisms or lenses
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133608—Direct backlight including particular frames or supporting means
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133614—Illuminating devices using photoluminescence, e.g. phosphors illuminated by UV or blue light
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133624—Illuminating devices characterised by their spectral emissions
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Liquid Crystal (AREA)
Abstract
The application discloses a liquid crystal display device. The liquid crystal display device is provided with a frame area and comprises a liquid crystal display panel and a backlight module; the backlight module is arranged on the light incident side of the liquid crystal display panel and comprises a quantum dot film and a first prism sheet, wherein the first prism sheet is positioned on one side, close to the liquid crystal display panel, of the quantum dot film, and a first blue light absorbing material is doped at the part, corresponding to the frame area, of the first prism sheet. The blue edge phenomenon in the liquid crystal display device is improved, and the design requirement of a narrow-frame display product can be met.
Description
Technical Field
The application relates to the technical field of display, in particular to a liquid crystal display device.
Background
With the improvement of the living standard of people, products with high color gamut are more and more sought after by consumers, and compared with the organic light emitting diode display module, the conventional liquid crystal display module has a certain gap in color gamut.
Currently, in order to realize high color gamut display of liquid crystal display products, a quantum dot technology is applied in a backlight module, that is, a quantum dot film is used in the backlight module, and is used for excitation under a blue light source to generate red light and green light, so that the red light and the green light are mixed into white light. However, the edge of the quantum dot film is easy to be invaded by external water and oxygen to fail, so that the edge of the backlight module has blue edge, and the taste of a display picture is greatly influenced. In the prior art, the blue edge is shielded by increasing the width of the black matrix in the panel, but the scheme is suitable for the design of large-frame display products, so that the design requirement of narrow-frame display products cannot be met.
Disclosure of Invention
The embodiment of the application provides a liquid crystal display device to improve the blue edge phenomenon in the liquid crystal display device, and meet the design requirement of a narrow-frame display product.
An embodiment of the present application provides a liquid crystal display device having a frame region, the liquid crystal display device including:
a liquid crystal display panel; and
the backlight module is arranged on the light incident side of the liquid crystal display panel and comprises a quantum dot film and a first prism sheet, wherein the first prism sheet is positioned on one side, close to the liquid crystal display panel, of the quantum dot film, and a part, corresponding to the frame area, of the first prism sheet is doped with a first blue light absorbing material.
Optionally, in some embodiments of the present application, the first prism sheet includes a first substrate layer and a first prism portion, the first prism portion is located on a side of the first substrate layer away from the quantum dot film and is located in the frame region, and the first blue light absorbing material is doped in the first prism portion.
Optionally, in some embodiments of the present application, the frame area includes an upper frame area, a first side frame area, a lower frame area, and a second side frame area that are sequentially connected end to end, and the first prism portion is located in at least one of the upper frame area, the first side frame area, and the second side frame area.
Optionally, in some embodiments of the present application, the first prism portion is disposed in the upper frame region, the first side frame region, and the second side frame region.
Optionally, in some embodiments of the present application, the first blue light absorbing material is a high refractive particle, and the refractive index of the high refractive particle is 1.65-1.68; and/or
The first blue light absorbing material includes one or more of zirconia, titania, and zinc sulfide.
Optionally, in some embodiments of the present application, the backlight module further includes a second prism sheet, the second prism sheet is located on a side of the first prism sheet away from the quantum dot film, and a portion of the second prism sheet corresponding to the frame region is doped with a second blue light absorbing material.
Optionally, in some embodiments of the present application, the backlight module further includes a first diffusion sheet and a blue light neutralization portion, where the first diffusion sheet is located between the first prism sheet and the quantum dot film, the blue light neutralization portion covers a surface of the first diffusion sheet, which is close to or far away from the quantum dot film, and the blue light neutralization portion is located in the frame area and is disposed corresponding to the first prism portion.
Optionally, in some embodiments of the present application, the backlight module further includes a first diffusion sheet and a blue light neutralization portion, the first diffusion sheet is located at a side of the first prism sheet away from the quantum dot film, the blue light neutralization portion covers a surface of the first diffusion sheet, which is close to or far away from the quantum dot film, and the blue light neutralization portion is located in the frame area and corresponds to the first prism portion.
Optionally, in some embodiments of the present application, the frame area includes an upper frame area, a first side frame area, a lower frame area, and a second side frame area that are sequentially connected end to end, and the blue light neutralization portion is disposed in at least one of the upper frame area, the first side frame area, and the second side frame area.
Optionally, in some embodiments of the present application, the material of the blue light neutralizing portion includes yellow phosphor, yellow quantum dots, or yellow dye doped ink; or (b)
The material of the blue light neutralization part comprises a mixture of red fluorescent powder and green fluorescent powder, a mixture of red quantum dots and green quantum dots, or an ink mixture doped with red dye and green dye.
Compared with the liquid crystal display device in the prior art, the liquid crystal display device provided by the application has the advantages that the first blue light absorbing material is doped in the part, corresponding to the frame area, of the first prism sheet, so that when the blue light leaked from the edge of the quantum dot film enters the first prism sheet, the blue light can be absorbed by the first blue light absorbing material in the first prism sheet, and the blue light leaked from the edge of the backlight module can be weakened, so that the blue edge phenomenon of the liquid crystal display device is weakened. Therefore, in the design of the display product, the blue edge is not required to be shielded in a mode of enlarging the width of the black matrix in the panel, so that the design requirement of the display product with a narrow frame can be met.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly described below, the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic plan view of a liquid crystal display device according to a first embodiment of the present application.
Fig. 2 is a schematic cross-sectional structure of a liquid crystal display device according to a first embodiment of the present application.
Fig. 3 is a schematic plan view of a first prism sheet of a liquid crystal display device according to a first embodiment of the present application.
Fig. 4 is a schematic cross-sectional structure of the first prism sheet shown in fig. 3 along a section line A-A'.
Fig. 5 is a schematic cross-sectional structure of a liquid crystal display device according to a second embodiment of the present application.
Fig. 6 is a schematic cross-sectional structure of a liquid crystal display device according to a third embodiment of the present application.
Fig. 7 is a schematic cross-sectional structure of the second prism sheet shown in fig. 6.
Fig. 8 is a schematic cross-sectional structure of a liquid crystal display device according to a fourth embodiment of the present application.
Fig. 9 is a schematic cross-sectional structure of a liquid crystal display device according to a fifth embodiment of the present application.
Fig. 10 is a schematic cross-sectional structure of a liquid crystal display device according to a sixth embodiment of the present application.
Fig. 11 is a schematic sectional structure of a liquid crystal display device according to a seventh embodiment of the present application.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application. Furthermore, it should be understood that the detailed description is presented herein for purposes of illustration and explanation only and is not intended to limit the present application. In this application, unless otherwise indicated, terms of orientation such as "upper" and "lower" are used to generally refer to the upper and lower positions of the device in actual use or operation, and specifically the orientation of the drawing figures; while "inner" and "outer" are for the outline of the device.
The embodiment of the application provides a liquid crystal display device. The following will describe in detail. The following description of the embodiments is not intended to limit the preferred embodiments.
The application provides a liquid crystal display device, which is provided with a frame area. The liquid crystal display device comprises a liquid crystal display panel and a backlight module, wherein the backlight module is arranged on the light inlet side of the liquid crystal display panel, the backlight module comprises a quantum dot film and a first prism sheet, the first prism sheet is positioned on one side, close to the liquid crystal display panel, of the quantum dot film, and a part, corresponding to a frame area, of the first prism sheet is doped with a first blue light absorbing material.
Therefore, the liquid crystal display device provided by the application is characterized in that the first blue light absorbing material is doped in the part of the first prism sheet corresponding to the frame area, so that when the blue light leaked from the edge of the quantum dot film enters the first prism sheet, the blue light can be absorbed by the first blue light absorbing material in the first prism sheet, and the blue light leaked from the edge of the backlight module can be weakened, so that the blue edge phenomenon of the liquid crystal display device is weakened. Therefore, in the design of the display product, the blue edge is not required to be shielded in a mode of enlarging the width of the black matrix in the panel, so that the design requirement of the display product with a narrow frame can be met.
The liquid crystal display device provided by the application is described in detail below by way of specific examples.
Referring to fig. 1 to 4, a first embodiment of the present application provides a liquid crystal display device 100. The liquid crystal display device 100 includes a liquid crystal display panel 10 and a backlight module 20. The backlight module 20 is disposed on the light incident side of the liquid crystal display panel 10.
The backlight module 20 is adhered to the liquid crystal display panel 10 through the adhesive layer 30. Wherein the adhesive layer 30 may be a light shielding tape.
As shown in fig. 1, the liquid crystal display device 100 has a display area 101 and a frame area 102 provided on the peripheral side of the display area 101. Specifically, the border region 102 includes an upper border region 102A, a first side border region 102B, a lower border region 102C, and a second side border region 102D that are connected end to end in sequence. Wherein the width of the lower frame region 102C is greater than the width of the upper frame region 102A.
Referring to fig. 2, the liquid crystal display panel 10 includes a lower polarizer 11, an array substrate 12, a liquid crystal layer (not shown), a color film substrate 13, and an upper polarizer 14, which are sequentially disposed. The color film substrate 13 includes a black matrix 131 located in the frame area 102. It should be noted that, the structures of the lower polarizer 11, the array substrate 12, the color film substrate 13, and the upper polarizer 14 may refer to the prior art, and are not described herein again.
The backlight module 20 includes a back plate 21, and a blue light source 22, a reflective film 23, a light guide plate 24, a quantum dot film 25, a first diffusion sheet 26, a first prism sheet 27, a second prism sheet 28, and a second diffusion sheet 29 disposed on the back plate 21.
It should be noted that, in some embodiments, only the first diffusion sheet 26 may be disposed in the backlight module 20 and the second diffusion sheet 29 may be omitted, which is not described herein. In addition, the backlight module 20 in the present embodiment may be a side-in type backlight module or a direct type backlight module, and the present embodiment only uses the backlight module 20 as a side-in type backlight module for illustration, but is not limited thereto.
Specifically, the blue light source 22 is disposed on a side surface of the back plate 21 and is disposed opposite to the light guide plate 24. Wherein the blue light source 22 may be a blue light emitting diode. It should be noted that the position of the blue light source 22 in the present embodiment is merely illustrative for convenience in describing the present embodiment, but is not to be construed as limiting the present application.
The reflective film 23 is provided at the bottom of the back plate 21. The light guide plate 24, the quantum dot film 25, the first diffusion sheet 26, the first prism sheet 27, the second prism sheet 28, and the second diffusion sheet 29 are sequentially disposed on the side of the reflection film 23 remote from the back plate 21.
The quantum dot film 25 includes a first isolation film (not shown in the figure), a second isolation film (not shown in the figure), and a quantum dot layer (not shown in the figure) disposed between the first isolation film and the second isolation film, which are all related art, and are not described herein.
In the present embodiment, the first prism sheet 27 is located at a side of the quantum dot film 25 close to the liquid crystal display panel 10. The portion of the first prism sheet 27 corresponding to the frame region 102 is doped with a first blue light absorbing material. When the edge of the quantum dot film 25 is disabled due to invasion of external water and oxygen, the first blue light absorbing material can absorb blue light entering the first prism sheet 27, so that the blue light leaking from the edge of the quantum dot film 25 can be weakened, the blue edge phenomenon of the liquid crystal display device 100 can be weakened, and the design requirement of a narrow-frame display product can be met.
In this embodiment, the first blue light absorbing material is a high refractive particle. Wherein the refractive index of the high refractive particles is 1.65-1.68, such as 1.65, 1.66, 1.67 or 1.68. Since the wavelength of blue light is short, the high refractive particles in the above refractive index range have a good absorption effect on blue light, so that blue light at the edge can be significantly attenuated. Specifically, the first blue light absorbing material includes one or more of zirconia, titania, and zinc sulfide.
It should be noted that, in some embodiments, the first blue light absorbing material may also be other materials having an absorbing effect on blue light, which is not limited in this application.
Further, referring to fig. 2 to 4, the first prism sheet 27 includes a first base material layer 271 and a first prism portion 272. The first prism portion 272 is located on a side of the first base material layer 271 remote from the quantum dot film 25. The first blue light absorbing material is doped in the first prism portion 272. The first prism portion 272 is located in at least one of the upper frame region 102A, the first side frame region 102B, and the second side frame region 102D. In the present embodiment, the first prism portion 272 is disposed in the upper frame region 102A, the first side frame region 102B, and the second side frame region 102D. In the liquid crystal display product, since the widths of the upper frame region 102A, the first side frame region 102B, and the second side frame region 102D are generally smaller than the widths of the lower frame region 102C, the blue edge phenomenon mainly occurs in the upper frame region 102A, the first side frame region 102B, and the second side frame region 102D, and the present embodiment can avoid the waste of materials while improving the blue edge phenomenon by arranging the first prism portion 272 only in the upper frame region 102A, the first side frame region 102B, and the second side frame region 102D.
Specifically, in the process of manufacturing the first prism sheet 27 of the present embodiment, the foregoing high refractive particles are doped in the adhesive material used for the first prism portion 272, so that the refractive index of the first prism portion 272 is greater than the refractive index of the portion (not shown) of the first prism sheet 27 corresponding to the display area 101, so as to achieve the purpose of absorbing blue light by utilizing the characteristic of high refractive index at the edge of the first prism sheet 27.
Referring to fig. 5, a second embodiment of the present application provides a liquid crystal display device 200. The second embodiment of the present application provides a liquid crystal display device 200 different from the first embodiment in that: the first prism sheet 27 is located between the second prism sheet 28 and the second diffusion sheet 29.
Referring to fig. 6 and 7, a third embodiment of the present application provides a liquid crystal display device 300. The liquid crystal display device 300 provided in the third embodiment of the present application is different from the first embodiment in that: the second prism sheet 28 is doped with a second blue light absorbing material at a portion corresponding to the frame region 102, and the second prism sheet 28 includes a second base material layer 281 and a second prism portion 282 disposed on the second base material layer 281, where the second prism portion 282 is disposed corresponding to the first prism portion 272, and the second blue light absorbing material is disposed in the second prism portion 282.
Wherein the second blue light absorbing material is the same as the first blue light absorbing material. In this way, in the present embodiment, by doping the second blue light absorbing material in the second prism portion 282, the blue light leaking from the edge of the quantum dot film 25 can be further reduced by the double absorption effect of the first blue light absorbing material and the second blue light absorbing material on the blue light, and the blue edge phenomenon of the liquid crystal display device 300 can be further weakened.
Referring to fig. 8, a fourth embodiment of the present application provides a liquid crystal display device 400. The fourth embodiment of the present application provides a liquid crystal display device 400 different from the first embodiment in that: the first diffusion sheet 26 is located at a side of the second prism sheet 28 away from the quantum dot film 25, the second diffusion sheet 29 is located between the quantum dot film 25 and the first prism sheet 27, the backlight module 20 further includes a blue light neutralization portion 31, the blue light neutralization portion 31 covers a surface of the first diffusion sheet 26 away from the quantum dot film 25, and the blue light neutralization portion 31 is located in the frame region 102 and is disposed corresponding to the first prism portion 272.
In this embodiment, the blue light neutralization portion 31 is disposed on the surface of the first diffusion sheet 26 far away from the quantum dot film 25, so that the blue light that is not absorbed by the first prism portion 272 can be neutralized by utilizing the neutralization effect of the blue light neutralization portion 31, so as to further weaken the blue light leaking from the edge of the quantum dot film 25, thereby avoiding the occurrence of the blue edge phenomenon, and further meeting the design requirement of the narrow-frame display product.
Specifically, in some embodiments, the material of the blue light neutralizing portion 31 may include yellow phosphor, yellow quantum dots, or ink doped with yellow dye. By using the above materials, the blue light neutralization section 31 is enabled to generate yellow light under excitation of blue light, and white light is formed by mixing the yellow light with the blue light, so as to achieve the effect of neutralizing the blue light. When the material of the blue light neutralization portion 31 is an ink doped with a yellow dye, the blue light neutralization portion 31 may be formed on the surface of the first diffusion sheet 26 by ink printing. In some embodiments, when the material of the blue light neutralization portion 31 is yellow quantum dots, the color gamut of the liquid crystal display device 400 can be improved, which is further beneficial to improving the display effect of the liquid crystal display device 400.
In some embodiments, the material of the blue light neutralizing portion 31 may also include a mixture of red phosphor and green phosphor, a mixture of red quantum dots and green quantum dots, or an ink mixture doped with a red dye and a green dye. By using the above-described materials, the blue light neutralization section 31 is enabled to generate red light and green light under excitation of blue light, and to form white light by mixing of the red light, the green light, and the blue light, to achieve an effect of neutralizing the blue light. When the material of the blue light neutralization portion 31 is an ink mixture doped with a red dye and a green dye, the blue light neutralization portion 31 may be formed on the surface of the first diffusion sheet 26 by means of ink printing. In some embodiments, when the material of the blue light neutralization portion 31 is a mixture of red quantum dots and green quantum dots, the color gamut of the liquid crystal display device 400 can be improved, which is further beneficial to improving the display effect of the liquid crystal display device 400.
Referring to fig. 9, a fifth embodiment of the present application provides a liquid crystal display device 500. The liquid crystal display device 500 provided in the fifth embodiment of the present application is different from the fourth embodiment in that: the blue light neutralization section 31 covers the surface of the first diffusion sheet 26 close to the quantum dot film 25. The above arrangement can shorten the distance between the blue light neutralization section 31 and the quantum dot film 25, and can further improve the effect of the blue light neutralization section 31 on the neutralization of the blue light.
Referring to fig. 10, a sixth embodiment of the present application provides a liquid crystal display device 600. The liquid crystal display device 600 provided in the sixth embodiment of the present application is different from the first embodiment in that: the backlight module 20 further includes a blue light neutralization portion 31, where the blue light neutralization portion 31 covers the surface of the first diffusion sheet 26 away from the quantum dot film 25, and the blue light neutralization portion 31 is located in the frame area 102 and is disposed corresponding to the first prism portion 272.
In this embodiment, the blue light neutralization portion 31 is disposed on the surface of the first diffusion sheet 26 far from the quantum dot film 25, so that the blue light leaking from the edge of the quantum dot film 25 can be reduced by utilizing the neutralization effect of the blue light neutralization portion 31 on the blue light; further, since the first prism portion 272 is located at a side of the blue light neutralization portion 31 away from the quantum dot film 25, the first blue light absorbing material in the first prism portion 272 can absorb the un-neutralized blue light, and further, the blue light leaking from the edge of the quantum dot film 25 can be reduced to the maximum extent through the dual functions of the blue light neutralization portion 31 and the first prism portion 272, so that the blue edge phenomenon can be avoided, and the design requirement of the narrow-frame display product can be met.
Specifically, in some embodiments, the material of the blue light neutralizing portion 31 may include yellow phosphor, yellow quantum dots, or ink doped with yellow dye. By using the above materials, the blue light neutralization section 31 is enabled to generate yellow light under excitation of blue light, and white light is formed by mixing the yellow light with the blue light, so as to achieve the effect of neutralizing the blue light. When the material of the blue light neutralization portion 31 is an ink doped with a yellow dye, the blue light neutralization portion 31 may be formed on the surface of the first diffusion sheet 26 by ink printing. In some embodiments, when the material of the blue light neutralization portion 31 is yellow quantum dots, the color gamut of the liquid crystal display device 600 can be improved, which is further beneficial to improving the display effect of the liquid crystal display device 600.
In some embodiments, the material of the blue light neutralizing portion 31 may also include a mixture of red phosphor and green phosphor, a mixture of red quantum dots and green quantum dots, or an ink mixture doped with a red dye and a green dye. By using the above-described materials, the blue light neutralization section 31 is enabled to generate red light and green light under excitation of blue light, and to form white light by mixing of the red light, the green light, and the blue light, to achieve an effect of neutralizing the blue light. When the material of the blue light neutralization portion 31 is an ink mixture doped with a red dye and a green dye, the blue light neutralization portion 31 may be formed on the surface of the first diffusion sheet 26 by means of ink printing. In some embodiments, when the material of the blue light neutralization portion 31 is a mixture of red quantum dots and green quantum dots, the color gamut of the liquid crystal display device 600 can be improved, which is further beneficial to improving the display effect of the liquid crystal display device 600.
Referring to fig. 11, a seventh embodiment of the present application provides a liquid crystal display device 700. The liquid crystal display device 700 provided in the seventh embodiment of the present application is different from the first embodiment in that: the blue light neutralization section 31 covers the surface of the first diffusion sheet 26 close to the quantum dot film 25. The above arrangement can shorten the distance between the blue light neutralization section 31 and the quantum dot film 25, and can further improve the effect of the blue light neutralization section 31 on the neutralization of the blue light.
The foregoing has described in detail a liquid crystal display device provided by embodiments of the present application, and specific examples have been applied herein to illustrate the principles and embodiments of the present application, where the foregoing examples are provided to assist in understanding the methods and core ideas of the present application; meanwhile, those skilled in the art will have variations in the specific embodiments and application scope in light of the ideas of the present application, and the present description should not be construed as limiting the present application in view of the above.
Claims (7)
1. A liquid crystal display device having a frame region, the liquid crystal display device comprising:
a liquid crystal display panel; and
the backlight module is arranged on the light incident side of the liquid crystal display panel and comprises a quantum dot film, a first prism sheet and a second prism sheet, wherein the first prism sheet is positioned on one side of the quantum dot film, which is close to the liquid crystal display panel, and comprises a first substrate layer and a first prism part, the first prism part is positioned on one side of the first substrate layer, which is far away from the quantum dot film, and is doped with a first blue light absorbing material, and the second prism sheet is positioned on one side of the first prism sheet, which is far away from the quantum dot film;
the frame area comprises an upper frame area, a first side frame area, a lower frame area and a second side frame area which are connected end to end in sequence, the width of the upper frame area, the width of the first side frame area and the width of the second side frame area are smaller than the width of the lower frame area, and the first prism portion is arranged in the upper frame area, the first side frame area and the second side frame area.
2. The liquid crystal display device according to claim 1, wherein the first blue light absorbing material is high refractive particles having a refractive index of 1.65 to 1.68; and/or
The first blue light absorbing material includes one or more of zirconia, titania, and zinc sulfide.
3. The liquid crystal display device according to claim 1, wherein a portion of the second prism sheet corresponding to the frame region is doped with a second blue light absorbing material.
4. The liquid crystal display device according to claim 1, wherein the backlight module further comprises a first diffusion sheet and a blue light neutralization portion, the first diffusion sheet is located between the first prism sheet and the quantum dot film, the blue light neutralization portion covers the surface of the first diffusion sheet, which is close to or far from the quantum dot film, and the blue light neutralization portion is located in the frame area and is disposed corresponding to the first prism portion.
5. The liquid crystal display device according to claim 1, wherein the backlight module further comprises a first diffusion sheet and a blue light neutralization portion, the first diffusion sheet is located at one side of the first prism sheet away from the quantum dot film, the blue light neutralization portion covers the surface of the first diffusion sheet, which is close to or far away from the quantum dot film, and the blue light neutralization portion is located in the frame area and is arranged corresponding to the first prism portion.
6. The liquid crystal display device of claim 4 or 5, wherein the frame region comprises an upper frame region, a first side frame region, a lower frame region, and a second side frame region that are sequentially connected end to end, and the blue light neutralization portion is disposed in at least one of the upper frame region, the first side frame region, and the second side frame region.
7. The liquid crystal display device according to claim 4 or 5, wherein the material of the blue light neutralization portion comprises yellow phosphor, yellow quantum dots, or ink doped with yellow dye; or (b)
The material of the blue light neutralization part comprises a mixture of red fluorescent powder and green fluorescent powder, a mixture of red quantum dots and green quantum dots, or an ink mixture doped with red dye and green dye.
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| CN105842926A (en) * | 2016-06-17 | 2016-08-10 | 武汉华星光电技术有限公司 | Liquid crystal display (LCD) |
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| US9535206B2 (en) * | 2014-06-09 | 2017-01-03 | Apple Inc. | Display with structures for reducing blue edge effects |
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| CN104991295A (en) * | 2015-06-23 | 2015-10-21 | 东莞市纳利光学材料有限公司 | Brightness enhancement film having blue light resistance effect and manufacturing method thereof |
| CN105842926A (en) * | 2016-06-17 | 2016-08-10 | 武汉华星光电技术有限公司 | Liquid crystal display (LCD) |
| CN107203064A (en) * | 2017-07-03 | 2017-09-26 | 厦门天马微电子有限公司 | A kind of display device |
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