CN104503130A - Colored-film substrate, display panel and display device - Google Patents
Colored-film substrate, display panel and display device Download PDFInfo
- Publication number
- CN104503130A CN104503130A CN201410848085.9A CN201410848085A CN104503130A CN 104503130 A CN104503130 A CN 104503130A CN 201410848085 A CN201410848085 A CN 201410848085A CN 104503130 A CN104503130 A CN 104503130A
- Authority
- CN
- China
- Prior art keywords
- light
- color
- quantum dot
- film layer
- organic film
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000758 substrate Substances 0.000 title claims abstract description 67
- 239000010410 layer Substances 0.000 claims description 112
- 239000002096 quantum dot Substances 0.000 claims description 105
- 238000002834 transmittance Methods 0.000 claims description 37
- 239000011258 core-shell material Substances 0.000 claims description 35
- 230000035807 sensation Effects 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 15
- 229920000642 polymer Polymers 0.000 claims description 15
- 239000011241 protective layer Substances 0.000 claims description 13
- 239000011162 core material Substances 0.000 claims description 11
- 239000011257 shell material Substances 0.000 claims description 11
- 239000004925 Acrylic resin Substances 0.000 claims description 9
- 229920000178 Acrylic resin Polymers 0.000 claims description 9
- -1 alkyl benzophenone Chemical compound 0.000 claims description 9
- 239000011159 matrix material Substances 0.000 claims description 9
- 239000000178 monomer Substances 0.000 claims description 8
- WUPHOULIZUERAE-UHFFFAOYSA-N 3-(oxolan-2-yl)propanoic acid Chemical compound OC(=O)CCC1CCCO1 WUPHOULIZUERAE-UHFFFAOYSA-N 0.000 claims description 6
- 239000005083 Zinc sulfide Substances 0.000 claims description 6
- 229910052980 cadmium sulfide Inorganic materials 0.000 claims description 6
- UHYPYGJEEGLRJD-UHFFFAOYSA-N cadmium(2+);selenium(2-) Chemical group [Se-2].[Cd+2] UHYPYGJEEGLRJD-UHFFFAOYSA-N 0.000 claims description 6
- 229910052984 zinc sulfide Inorganic materials 0.000 claims description 6
- DRDVZXDWVBGGMH-UHFFFAOYSA-N zinc;sulfide Chemical group [S-2].[Zn+2] DRDVZXDWVBGGMH-UHFFFAOYSA-N 0.000 claims description 6
- WURBFLDFSFBTLW-UHFFFAOYSA-N benzil Chemical compound C=1C=CC=CC=1C(=O)C(=O)C1=CC=CC=C1 WURBFLDFSFBTLW-UHFFFAOYSA-N 0.000 claims description 5
- 239000012965 benzophenone Substances 0.000 claims description 3
- 230000000903 blocking effect Effects 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 abstract 2
- 239000004973 liquid crystal related substance Substances 0.000 description 18
- 235000019615 sensations Nutrition 0.000 description 15
- 241000083879 Polyommatus icarus Species 0.000 description 6
- 239000004065 semiconductor Substances 0.000 description 6
- 239000003086 colorant Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 230000035515 penetration Effects 0.000 description 5
- 230000001276 controlling effect Effects 0.000 description 4
- 238000004020 luminiscence type Methods 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- 238000001029 thermal curing Methods 0.000 description 4
- 238000000862 absorption spectrum Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000001723 curing Methods 0.000 description 3
- 235000019557 luminance Nutrition 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 239000002105 nanoparticle Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 230000005476 size effect Effects 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical group [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000000295 emission spectrum Methods 0.000 description 2
- 230000000977 initiatory effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000049 pigment Substances 0.000 description 2
- 239000003211 polymerization photoinitiator Substances 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- LLHKCFNBLRBOGN-UHFFFAOYSA-N propylene glycol methyl ether acetate Chemical compound COCC(C)OC(C)=O LLHKCFNBLRBOGN-UHFFFAOYSA-N 0.000 description 2
- 238000010526 radical polymerization reaction Methods 0.000 description 2
- 150000003254 radicals Chemical class 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000003595 spectral effect Effects 0.000 description 2
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000002189 fluorescence spectrum Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000004770 highest occupied molecular orbital Methods 0.000 description 1
- 238000004768 lowest unoccupied molecular orbital Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000016 photochemical curing Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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
- G02F1/133509—Filters, e.g. light shielding masks
- G02F1/133514—Colour filters
-
- 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
- G02F1/133611—Direct backlight including means for improving the brightness uniformity
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)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The invention discloses a colored-film substrate, a display panel and a display device. The colored-film substrate mainly comprises a substrate body; a plurality of color-resistance units are arranged like a rectangle on the substrate body; at least one color-resistance unit comprises a light sensitive organic film layer. The colored-film substrate has the advantages that the light sensitive organic film layer is used to perform blue resistance, so that the blue light transmission rate is improved, and meanwhile, different white points can be obtained through different transmission rate of the blue light.
Description
Technical Field
The invention relates to the technical field of display, in particular to a color film substrate, a display panel and a display device.
Background
In a display device, incident light can be effectively filtered through a color filter substrate to achieve the purpose of color display, such as the color filter substrate shown in fig. 1, where the color filter substrate includes a glass substrate 11, a three-color-resist 14 (RGB), a black matrix 12 (BM), and a planarization layer 13 (OC). For example, when the white light passes through the red filter, only red light can pass through the red filter, and other light is blocked, so that the incident light is attenuated to a large extent, a lot of incident light is wasted, and how to effectively utilize the incident light becomes a hotspot of research.
For high NTSC (National Television Standards Committee) products, increasing the thickness of the RGB three filters is adopted to increase the light output of incident light, but the light transmittance is easily caused due to the increased thickness of the RGB three filters. If the B film among the three RGB filter films is replaced with an LED (Light Emitting Diode), the luminance of the synthesized Light is limited by the luminance of the LED.
Quantum dots are nanoparticles composed of compounds of group II-VI or III-V elements. When the size of the quantum dot is reduced to a certain value (10nm), the electronic energy level near the metal fermi level is changed from quasi-continuous to discrete energy level, the energy gap of the highest occupied molecular orbital and the lowest unoccupied molecular orbital levels of the nano-semiconductor particle discontinuity is widened, thereby causing blue shift of absorption and fluorescence spectrum peak, which is called quantum size effect.
The quantum size effect causes great change of the photoelectric property of the semiconductor quantum dot, and the quantum size effect generated when the size of the semiconductor quantum dot particle is smaller than the bohr radius of the exciton changes the energy level structure of the semiconductor material, so that the semiconductor material has a continuous energy band structure and is converted into a discrete energy level structure with molecular characteristics. By utilizing the phenomenon, the semiconductor quantum dots with different particle diameters can be prepared in the same reaction to generate light emission with different frequencies, so that various light emitting colors can be conveniently regulated and controlled.
In summary, in the prior art, high PPI (pixel density) products have a problem that the aperture ratio is getting smaller and smaller, resulting in insufficient brightness.
Disclosure of Invention
The embodiment of the invention provides a color film substrate, a display panel and a display device, which are used for solving the problem of insufficient brightness caused by the fact that the opening ratio of a high PPI product in the prior art is smaller and smaller,
an embodiment of the present invention provides a color film substrate, including:
a substrate;
the substrate comprises a plurality of color resistance units arranged in a matrix;
at least one of the color resistance units comprises a light sensation organic film layer.
Based on the color film substrate in the foregoing embodiment, an embodiment of the present invention further provides a display panel, which includes the color film substrate in the foregoing embodiment, an array substrate, and a display medium layer located therebetween.
The embodiment of the invention also provides a display device, which comprises the display panel and the backlight module, wherein the backlight module provides short-wave light for the display panel.
The embodiment of the invention provides a color film substrate, which has the advantages that a light-sensitive organic film layer replaces a blue color resistor in the prior art, so that the light transmittance of a product is improved, and meanwhile, different display luminances can be obtained due to different light transmittances by adjusting the thickness of the light-sensitive organic film layer, so that the displayed color gamut can be provided.
Drawings
Fig. 1 is a schematic structural diagram of a color film substrate in the prior art;
fig. 2 is a schematic structural diagram of a color film substrate according to an embodiment of the present invention;
fig. 3 is a schematic structural view of another color film substrate according to an embodiment of the present invention;
fig. 4 is a schematic structural view of the color film substrate to which quantum dots are added, corresponding to fig. 3;
fig. 5 is a schematic structural view of the color film substrate with the protective layer added, corresponding to fig. 4;
fig. 6 is a schematic structural view of another color film substrate according to an embodiment of the present invention;
fig. 7 is a schematic structural view of the color film substrate to which quantum dots are added, corresponding to fig. 6;
fig. 8 is a schematic structural diagram of the color filter substrate with the protective layer added, corresponding to fig. 7.
Detailed Description
The embodiment of the invention provides a color film substrate, which comprises a substrate; the substrate comprises a plurality of color resistance units arranged in a matrix; at least one of the color resistance units comprises a light sensation organic film layer. The method has the advantages that the light-sensitive organic film layer replaces blue color resistance, the penetration rate of blue light is improved, different display brightness can be obtained by adjusting different penetration rates of the blue light, and further the color gamut of display can be provided.
The preferred embodiments of the present invention will be described below with reference to the accompanying drawings of the specification, it being understood that the preferred embodiments described herein are merely for illustrating and explaining the present invention, and are not intended to limit the present invention, and that the embodiments and features of the embodiments in the present invention may be combined with each other without conflict.
As shown in fig. 2, a schematic view of a color filter substrate structure provided in an embodiment of the present invention includes a substrate 1; a plurality of color resistance units 4 (not shown in the figure) arranged in a matrix on the substrate; at least one of the color-resisting units includes a photosensitive organic film layer 4A.
In the embodiment of the invention, at least one color resistance unit comprises a light sensitive organic film layer, and because the transmittance of the light sensitive organic film layer to blue light is higher than that of the common blue color resistance in the prior art, the transmittance of the blue light is improved by adopting the light sensitive organic film layer; and the transmissivity of the light sensation organic film layer to the blue light is in inverse proportion to the thickness of the light sensation organic film layer, so that the different transmissivity of the blue light can be designed by setting the thickness of the light sensation organic film layer, different display brightness can be obtained by controlling the different transmissivity of the blue light, and the display color gamut can be improved.
In the embodiment of the present invention, since the light-sensing organic film layer can transmit short-wavelength light, which is preferably blue light, and since blue light has a wavelength in the range of 400nm to 500nm, which is shorter in the visible light region (400nm to 700nm), and blue light has a relatively high energy level, the conversion of the blue light portion to a wavelength longer than the wavelength of blue light is a transition from a high energy level to a low energy level, and the conversion of the wavelength can be more easily achieved.
In the embodiment of the invention, the light-sensitive organic film layer can pass through blue light, the transmittance of the light-sensitive organic film layer to the blue light is greater than that of a common blue color resistor in the prior art, the first color resistor can transmit red light, and the second color resistor can transmit green light, so that the color display is realized by three primary colors of red, green and blue on the display panel.
In the embodiment of the invention, the first color resistance and the second color resistance are taken as yellow color resistance layers to describe embodiment 1; example 2 will be described with the first color resist being a red resist layer and the second color resist being a green resist layer.
Furthermore, a first quantum dot film layer is formed on one side of the light incident surface of the first color resistor, and a second quantum dot film layer is formed on one side of the light incident surface of the second color resistor; the first quantum dots in the first quantum dot film layer are irradiated by light and then excited to emit red light, and the second quantum dots in the second quantum dot film layer are irradiated by light and then excited to emit green light.
In the embodiment of the invention, the first quantum dot is irradiated by blue light to excite red light, the second quantum dot is irradiated by blue light to excite green light, correspondingly, the color resistance unit comprises the light-sensitive organic film layer, the quantum dot can convert the blue light into light of the color required by the pixel during display, and the light-sensitive organic film layer can improve the penetration rate of the blue light.
Further, a light shielding layer is further disposed on the substrate, where the light shielding layer is a black matrix 2, and in fig. 2, the light shielding layer includes a black matrix disposed in a grid shape corresponding to the color resistance layer.
Based on the inventive concept of the embodiment of the present invention, according to the different color resistance colors of the first color resistance and the second color resistance, the embodiment of the present invention further includes at least the following specific implementation manners, specifically referring to embodiment 1 to embodiment 2.
Example 1
As shown in fig. 3, another color filter substrate structure schematic diagram provided in embodiment 1 of the present invention includes a substrate 1, a plurality of color resistor units (not shown in the figure) arranged in a layer matrix on the substrate, and a light shielding layer 2. The color resistance unit comprises a photosensitive organic film layer 4A, a first color resistance 4B1 and a second color resistance 4C1 which are yellow color resistance layers.
In the embodiment of the invention, because the color resistance unit comprises the light-sensitive organic film layer which can transmit short-wave light and the backlight source is short-wave light, the short-wave light which is preferred in the embodiment is blue light, and because the light-sensitive organic film layer has higher transmittance than the common blue color resistance in the prior art, compared with the prior art, the brightness of the liquid crystal display panel is improved.
As shown in fig. 4, a first quantum dot film 5B is formed on the light incident surface side of the first color resist 4B1, and a second quantum dot film 5C is formed on the light incident surface side of the second color resist 4C 1.
Wherein, first quantum dot in the first quantum dot membrane 5B of first colour resistance 4B1 income light side can arouse back outgoing red light through blue light irradiation, can regard first quantum dot to be red light quantum dot, second quantum dot in the second quantum dot 5C of second colour resistance 4C1 income light side can arouse outgoing green light through blue light irradiation, can regard second quantum dot to be green light quantum dot, and because quantum dot luminous efficiency is high and emission spectral line is narrow, therefore, can convert the blue light high efficiency of shortwave into the red light or the green light that are close monochromatic light, and then improve the colour gamut, improve the display quality of picture.
Further, since the yellow color resist layer can transmit both red light and green light, in the embodiment of the present invention, the yellow color resist layer replaces the red color resist layer and the green color resist layer, i.e., the transmittance of red light and green light can be ensured, and in the manufacturing process of the color film substrate, the two yellow color resist layers can be synchronously manufactured, thereby reducing the manufacturing processes and lowering the cost.
Further, the photosensitive organic film layer comprises a photoinitiator, a polymer monomer and a solvent. The light sensation organic film layer is formed by initiating monomer polymerization crosslinking curing to form a film because a photoinitiator in a light sensation material generates free radicals under the irradiation of ultraviolet light.
Further, the photoinitiator comprises a benzil-based polymer, an alkyl benzophenone-based polymer or an acyl phosphorous oxide polymer; the polymer monomer comprises an acrylate compound.
The photoinitiator in the embodiment of the invention is not limited to benzil, and also comprises other free radical polymerization photoinitiators.
In addition, the solvent is typically propylene glycol methyl ether acetate.
In addition, in the embodiment of the present invention, the minimum thickness of the light-sensitive organic film layer included in the color resistance unit may be 1.0 micron, and correspondingly, the maximum thickness of the light-sensitive organic film layer may reach 3.0 microns. Because the thickness of the light-sensitive organic film layer is in inverse proportion to the transmittance of the blue light, in practical application, the thickness of the light-sensitive organic film layer can be set according to the transmittance requirement of the blue light. Preferably, the light-sensitive organic film layer has a thickness of not more than 2.0 micrometers at the maximum and not less than 1.7 micrometers at the minimum.
Further, the light sensation organic film layer has a transmittance of 70-99%. Because the thickness of the light-sensitive organic film layer is in inverse proportion to the transmittance of blue light, if the thickness of the light-sensitive organic film layer is reduced to about 2.5 microns, the transmittance of the light-sensitive organic film layer to the blue light can reach between 90 and 99 percent, and if the thickness of the light-sensitive organic film layer is increased to about 2.9 microns, the transmittance of the light-sensitive organic film layer to the blue light is reduced to between 75 and 86 percent.
In the embodiment of the invention, the transmittance of blue light can be controlled by setting the thickness of the photosensitive organic film layer, and because the first color resistor 4B1 can transmit red light and the second color resistor 4C1 can transmit green light, color display is realized on the display panel by three primary colors of red, green and blue, the transmittance of blue light is controlled according to the set thickness of the photosensitive organic film layer, and further the chromaticity of white light mixed by three color light on the liquid crystal display screen is controlled.
Further, the first quantum dot or the second quantum dot is a core-shell type quantum dot. Further, the materials of the core-shell type red light quantum dots and the core-shell type green light quantum dots can be the same or different, and the combination of the core material and the shell material can be selected from one of the following three types:
the core material of the core-shell type quantum dots is cadmium selenide, and the shell material of the core-shell type quantum dots is zinc sulfide; or,
the core material of the core-shell type quantum dots is cadmium selenide, and the shell material of the core-shell type quantum dots is cadmium sulfide; or,
the core material of the core-shell type quantum dot is cadmium sulfide, and the shell material of the core-shell type quantum dot is zinc sulfide.
In the embodiment of the invention, the core-shell quantum dots are adopted to convert blue light, and from the perspective of absorption and emission spectrums, the quantum dots with the core-shell structure have more excellent luminescence characteristics, can obviously reduce the surface defects of nano particles, and greatly improve the luminescence efficiency. Therefore, the adoption of the core-shell type red light quantum dots and the core-shell type green light quantum dots is beneficial to improving the luminous efficiency.
Further, since the excitation of the first quantum dot and the second quantum dot by the blue light of the short wave light can generate monochromatic red light in the first color barrier 4B1 region and monochromatic green light in the second color barrier 4C1 region, respectively, the purity of the red light and the purity of the green light can be controlled by adjusting the concentration of the red light quantum dot and the green light quantum dot.
In the embodiment of the invention, the quantum efficiency of the quantum dots made of the core-shell material can reach 80-90%, most of short-wave light of the backlight source can be converted into red light or green light, and the light sensation organic film layer can improve the transmittance of the light sensation organic film layer to the blue light compared with the common blue color resistance in the prior art, so that the white light obtained after red, green and blue are mixed on the liquid crystal display panel has higher brightness and correspondingly higher color gamut. Because the transmittance of the blue light is in inverse proportion to the thickness of the light-sensitive organic film layer, the quantum dots convert the backlight into red light or green light, the red light or the green light is related to the material and the concentration of the quantum dots, and the white light brightness of the liquid crystal display screen is related to the red light, the green light and the blue light, the transmittance of the blue light can be changed by adjusting the thickness of the light-sensitive organic film layer, and further the white light brightness of the liquid crystal display screen can be adjusted; the transmittance of the red light and/or the green light can be changed by adjusting the material or the concentration of the red light and/or the green light quantum dots, and further the white light brightness of the liquid crystal display screen can be adjusted.
In the embodiment of the invention, the first quantum dot film 5B is formed on the light incident surface side of the first color resistor 4B1, and the second quantum dot film 5C is formed on the light incident surface side of the second color resistor 4C1, so that the white brightness of the liquid crystal display screen is improved, and the color gamut of the liquid crystal display screen is correspondingly improved. The prior art mainly increases the color resistance thickness to improve the color gamut of the liquid crystal display, but this will bring about the reduction of the transmittance. The embodiment of the invention improves the color gamut and the penetration rate.
Further, as shown in fig. 5, the color filter substrate in the embodiment of the present invention includes a protective layer 6 covering the color resistance unit. The protective layer 6 is used for protecting the photosensitive organic film layer 4A, the first color resist 4B1 and the second color resist 4C1 in the color resist unit, and also has the function of flattening the surface of the color film substrate. Further, the protective layer 6 is a thermal sensitive organic film layer, and the thermal sensitive organic film layer is mostly made of acrylic resin, wherein the acrylic resin is classified into a thermal curing type and a photo curing type, and the protective layer 6 is made of thermal curing type acrylic resin.
In the embodiment of the present invention, the light shielding layer 2 is used for shielding light, and is used for providing contrast, avoiding color mixing between the color resists connected with each other, and reducing reflection of external light. The basic material of the light shielding layer is chromium metal, and acrylic resin which can be doped with black pigment (carbon) is also used.
Example 2
As shown in fig. 6, a schematic structural diagram of another color filter substrate according to embodiment 2 of the present invention includes a substrate 1, a plurality of color resistance units 4 (not shown in the figure) arranged in a layer matrix on the substrate, and a light shielding layer 2. The color resistance unit comprises a photosensitive organic film layer 4A, a first color resistance 4B2 and a second color resistance 4C2, wherein the first color resistance 4B2 and the second color resistance 4C2 are a red color resistance layer and a green color resistance layer respectively.
In the embodiment of the invention, because the color resistance unit comprises the light-sensitive organic film layer which can transmit short-wave light, and the backlight source is short-wave light, the short-wave light which is preferred in the embodiment is blue light, and because the light-sensitive organic film layer has higher transmittance than the common blue color resistance in the prior art, compared with the prior art, the color gamut of the liquid crystal display panel is improved.
As shown in fig. 7, a first quantum dot film 5B is formed on the light incident surface side of the first color resist 4B2, and a second quantum dot film 5C is formed on the light incident surface side of the second color resist 4C 2.
Wherein, first quantum dot in the first quantum dot membrane 5B of first colour resistance 4B2 income light side can arouse back outgoing red light through blue light irradiation, can regard first quantum dot to be red light quantum dot, second quantum dot in the second quantum dot membrane 5C of second colour resistance 4C2 income light side can arouse outgoing green light through blue light irradiation, can regard first quantum dot to be red light quantum dot, and because quantum dot luminous efficiency is high and emission spectral line is narrow, therefore, can convert the blue light high efficiency of shortwave into the red light or the green light that are close monochromatic light, and then improve the colour gamut, improve the display quality of picture.
Further, the photosensitive organic film layer includes a photoinitiator, a polymer monomer and a solvent. . The light sensation organic film layer is formed by initiating monomer polymerization crosslinking curing to form a film because a photoinitiator in a light sensation material generates free radicals under the irradiation of ultraviolet light.
Further, the photoinitiator comprises a benzil-based polymer, an alkyl benzophenone-based polymer or an acyl phosphorous oxide polymer; the polymer monomer comprises an acrylate compound.
The photoinitiator in the embodiment of the invention is not limited to benzil, and also comprises other free radical polymerization photoinitiators.
In addition, the solvent is typically propylene glycol methyl ether acetate.
In addition, in the embodiment of the present invention, the minimum thickness of the light-sensitive organic film layer included in the color resistance unit may be 1.0 micron, and correspondingly, the maximum thickness of the light-sensitive organic film layer may reach 3.0 microns. Because the thickness of the light-sensitive organic film layer is in inverse proportion to the transmittance of the blue light, in practical application, the thickness of the light-sensitive organic film layer can be set according to the transmittance requirement of the blue light. Preferably, the light-sensitive organic film layer has a thickness of not more than 2.0 micrometers at the maximum and not less than 1.7 micrometers at the minimum.
Further, the light sensation organic film layer has a transmittance of 70-99%. Because the thickness of the light-sensitive organic film layer is in inverse proportion to the transmittance of blue light, if the thickness of the light-sensitive organic film layer is reduced to about 2.5 microns, the transmittance of the light-sensitive organic film layer to the blue light can reach between 90 and 99 percent, and if the thickness of the light-sensitive organic film layer is increased to about 2.9 microns, the transmittance of the light-sensitive organic film layer to the blue light is reduced to between 75 and 86 percent.
In the embodiment of the invention, the transmittance of blue light can be controlled by setting the thickness of the photosensitive organic film layer, and because the first color resistor 4B2 can transmit red light and the second color resistor 4C2 can transmit green light, color display is realized on the display panel by three primary colors of red, green and blue, the transmittance of blue light is controlled according to the set thickness of the photosensitive organic film layer, and further the chromaticity of white light mixed by three color light on the liquid crystal display screen is controlled.
Further, the first quantum dot or the second quantum dot is a core-shell type quantum dot.
Further, the materials of the core-shell type red light quantum dots and the core-shell type green light quantum dots can be the same or different, and the combination of the core material and the shell material can be selected from one of the following three types:
the core material of the core-shell type quantum dots is cadmium selenide, and the shell material of the core-shell type quantum dots is zinc sulfide; or,
the core material of the core-shell type quantum dots is cadmium selenide, and the shell material of the core-shell type quantum dots is cadmium sulfide; or,
the core material of the core-shell type quantum dot is cadmium sulfide, and the shell material of the core-shell type quantum dot is zinc sulfide.
In the embodiment of the invention, the core-shell quantum dots are adopted to convert the light of the backlight source, and the quantum dots with the core-shell structure have more excellent luminescence characteristics from the aspects of absorption and emission spectrum, so that the surface defects of the nano particles can be obviously reduced, and the luminescence efficiency is greatly improved. Therefore, the adoption of the core-shell type red light quantum dots and the core-shell type green light quantum dots is beneficial to improving the luminous efficiency.
Further, since the red and green quantum dots are excited by the blue light of the short-wavelength light, monochromatic red light can be generated in the first color resist 4B2 region, monochromatic green light can be generated in the second color resist 4C2 region, and the purity of red and green light can be controlled by adjusting the concentration of the red and green quantum dots.
In the embodiment of the invention, the quantum efficiency of the quantum dots made of the core-shell material can reach 80-90%, most of short-wave light of the backlight source can be converted into red light or green light, and the light sensation organic film layer can improve the transmittance of the light sensation organic film layer to the blue light compared with the common blue color resistance in the prior art, so that the white light obtained after red, green and blue are mixed on the liquid crystal display panel has higher brightness and correspondingly higher color gamut. Because the transmittance of the blue light is in inverse proportion to the thickness of the light-sensitive organic film layer, the quantum dots convert the backlight into red light or green light, the red light or the green light is related to the material and the concentration of the quantum dots, and the white light brightness of the liquid crystal display screen is related to the red light, the green light and the blue light, the transmittance of the blue light can be changed by adjusting the thickness of the light-sensitive organic film layer, and further the white light brightness of the liquid crystal display screen can be adjusted; the transmittance of the red light and/or the green light can be changed by adjusting the material or the concentration of the red light and/or the green light quantum dots, and further the white light brightness of the liquid crystal display screen can be adjusted.
In the embodiment of the invention, the first quantum dot film 5B is formed on the light incident surface side of the first color resistor 4B2, and the second quantum dot film 5C is formed on the light incident surface side of the second color resistor 4C2, so that the white brightness of the liquid crystal display screen is improved, and the color gamut of the liquid crystal display screen is correspondingly improved. The prior art mainly increases the color resistance thickness to improve the color gamut of the liquid crystal display, but this will bring about the reduction of the transmittance. The embodiment of the invention improves the color gamut and the penetration rate.
Further, as shown in fig. 8, a protective layer 6 is further disposed on the color resistance unit in the embodiment of the present invention. The protective layer is used for protecting the photosensitive organic film layer 4A, the first color resist 4B2 and the second color resist 4C2 in the color resist unit, and simultaneously, the protective layer also plays a role in flattening the surface of the color film substrate. Furthermore, the protective layer is a thermal sensitive organic film layer, and the thermal sensitive organic film layer is mostly made of acrylic resin, wherein the acrylic resin is divided into a thermal curing type and a light curing type, and the protective layer 6 is made of thermal curing type acrylic resin.
In the embodiment of the present invention, the light shielding layer 2 is used for shielding light, and is used for providing contrast, avoiding color mixing between the color resists connected with each other, and reducing reflection of external light. The basic material of the light shielding layer is chromium metal, and acrylic resin which can be doped with black pigment (carbon) is also used.
Example 3
Based on the same inventive concept, embodiment 3 of the present invention further provides a display panel, where the display panel includes the color film substrate, the array substrate, and the display medium layer located therebetween in any one of the embodiments.
Example 4
Embodiment 4 of the present invention further provides a display device, including the display panel and the backlight module described in embodiment 3.
Furthermore, the backlight module provides short-wave light for the display panel.
Preferably, the backlight may be a light emitting diode LED emitting blue light.
In the display device in the embodiment of the invention, the display panel comprises the color resistance of at least one light-sensitive organic film layer, so that the short-wave blue light provided by the backlight source can be transmitted, and the transmittance of the light-sensitive organic film layer to the short-wave blue light is higher than that of the blue color resistance to the short-wave blue light; the display panel also comprises quantum dots, and the quantum dots can convert light with other frequencies in the short-wave blue light into light with the same color as the color resistance, so that the utilization rate and the display brightness of the backlight can be improved. The display device provided by the embodiment of the invention can control the white light chromaticity of the display screen by controlling the thickness of the light sensitive organic film layer, or controlling the material or the concentration of the first quantum dots, or controlling the material or the concentration of the second quantum dots.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (19)
1. A color film substrate is characterized by comprising:
a substrate;
the substrate comprises a plurality of color resistance units arranged in a matrix;
at least one of the color resistance units comprises a light sensation organic film layer.
2. The color filter substrate of claim 1, wherein the photosensitive organic film layer transmits short-wave light.
3. The color filter substrate of claim 2, wherein the short-wave light is blue light.
4. The color filter substrate according to claim 3, wherein the color resistor unit further comprises a first color resistor and a second color resistor;
the first color resistor transmits red light; the second color resist transmits green light.
5. The color filter substrate of claim 3,
a first quantum dot film is formed on one side of the first color resistance light incident surface, and first quantum dots in the first quantum dot film layer are excited to emit red light after being illuminated;
and a second quantum dot film is formed on one side of the second color light blocking and entering surface, and second quantum dots in the second quantum dot film excite green light after being illuminated.
6. The color filter substrate of claim 5, wherein the first color resist and the second color resist are yellow color resist layers.
7. The color filter substrate according to claim 4 or 5, wherein the first color resist is a red color resist layer, and the second color resist is a green color resist layer.
8. The color filter substrate of claim 1, wherein the photosensitive organic film layer comprises a photoinitiator and a polymer monomer.
9. The color filter substrate of claim 8, wherein the photoinitiator comprises a benzil polymer, an alkyl benzophenone polymer, or an acyl phosphorous oxide polymer;
the polymer monomer comprises an acrylate compound.
10. The color filter substrate of claim 1, wherein the light-sensitive organic film layer has a thickness of 1.0 to 3.0 μm.
11. The color filter substrate of claim 1, wherein the light-sensitive organic film layer has a thickness of 1.7-2.0 μm.
12. The color filter substrate of claim 1, wherein the light-sensitive organic film layer has a transmittance of 70-99%.
13. The color filter substrate of claim 5, wherein the first quantum dot or the second quantum dot is a core-shell quantum dot.
14. The color filter substrate of claim 13, wherein a core material of the core-shell quantum dot is cadmium selenide, and a shell material of the core-shell quantum dot is zinc sulfide; or,
the core material of the core-shell type quantum dots is cadmium selenide, and the shell material of the core-shell type quantum dots is cadmium sulfide; or,
the core material of the core-shell type quantum dot is cadmium sulfide, and the shell material of the core-shell type quantum dot is zinc sulfide.
15. The color filter substrate according to claim 1, further comprising a protective layer covering the color resist unit; the protective layer is a thermal sense organic film layer.
16. The color filter substrate of claim 15, wherein the thermal sensitive organic film material is an acrylic resin.
17. A display panel comprising the color filter substrate according to any one of claims 1 to 16, an array substrate, and a display medium layer therebetween.
18. A display device comprising the display panel of claim 17 and a backlight module; the backlight module provides short-wave light for the display panel.
19. The display device according to claim 18, wherein the short-wave light is blue light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410848085.9A CN104503130B (en) | 2014-12-29 | 2014-12-29 | A kind of color membrane substrates, display panel and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410848085.9A CN104503130B (en) | 2014-12-29 | 2014-12-29 | A kind of color membrane substrates, display panel and display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104503130A true CN104503130A (en) | 2015-04-08 |
| CN104503130B CN104503130B (en) | 2017-11-14 |
Family
ID=52944535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410848085.9A Active CN104503130B (en) | 2014-12-29 | 2014-12-29 | A kind of color membrane substrates, display panel and display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104503130B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017045236A1 (en) * | 2015-09-14 | 2017-03-23 | 深圳市华星光电技术有限公司 | Liquid crystal display device |
| CN110853528A (en) * | 2018-08-21 | 2020-02-28 | 咸阳彩虹光电科技有限公司 | White light OLED display panel and display thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103278961A (en) * | 2013-04-28 | 2013-09-04 | 京东方科技集团股份有限公司 | Liquid crystal display device |
| CN103278876A (en) * | 2013-05-28 | 2013-09-04 | 京东方科技集团股份有限公司 | Quantum dot color filter and manufacturing method thereof and display device |
| CN103339536A (en) * | 2011-01-28 | 2013-10-02 | 东洋油墨Sc控股株式会社 | Diketopyrrolopyrrole-type pigment composition for color filters, colored composition for color filters, and color filter |
| CN103370642A (en) * | 2011-01-28 | 2013-10-23 | 东洋油墨Sc控股株式会社 | Colored composition for color filters, and color filter |
| CN203895462U (en) * | 2014-04-15 | 2014-10-22 | 北京京东方光电科技有限公司 | Display panel and display device |
-
2014
- 2014-12-29 CN CN201410848085.9A patent/CN104503130B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103339536A (en) * | 2011-01-28 | 2013-10-02 | 东洋油墨Sc控股株式会社 | Diketopyrrolopyrrole-type pigment composition for color filters, colored composition for color filters, and color filter |
| CN103370642A (en) * | 2011-01-28 | 2013-10-23 | 东洋油墨Sc控股株式会社 | Colored composition for color filters, and color filter |
| CN103278961A (en) * | 2013-04-28 | 2013-09-04 | 京东方科技集团股份有限公司 | Liquid crystal display device |
| CN103278876A (en) * | 2013-05-28 | 2013-09-04 | 京东方科技集团股份有限公司 | Quantum dot color filter and manufacturing method thereof and display device |
| CN203895462U (en) * | 2014-04-15 | 2014-10-22 | 北京京东方光电科技有限公司 | Display panel and display device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017045236A1 (en) * | 2015-09-14 | 2017-03-23 | 深圳市华星光电技术有限公司 | Liquid crystal display device |
| CN110853528A (en) * | 2018-08-21 | 2020-02-28 | 咸阳彩虹光电科技有限公司 | White light OLED display panel and display thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104503130B (en) | 2017-11-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| TWI597546B (en) | Photoluminescence color display | |
| EP3252525B1 (en) | Display device and method for manufacturing the same | |
| US20220229222A1 (en) | Color Liquid Crystal Displays and Display Backlights | |
| KR101604339B1 (en) | Light conversion film, baclight unit and display devive comprising the same | |
| CN104145210B (en) | Photo-luminescence color display | |
| TWI537645B (en) | Display device | |
| KR101969462B1 (en) | Photoluminescent display device and method for manufacturing the same | |
| JP2015052648A (en) | Method for selecting combination of color filter and light emitting device, and method for manufacturing image display device | |
| CN105353557A (en) | Backlight module and display device | |
| WO2014190604A1 (en) | Quantum dot color filter, manufacturing method therefor, and display apparatus | |
| JP2016071366A (en) | Color filter and display panel having the same | |
| KR20130000506A (en) | Display device | |
| CN103605234A (en) | Quantum dot color filter and liquid crystal display device | |
| US20180246267A1 (en) | Backlight module, display device to which backlight module is applied, and method for manufacturing light guide plate | |
| WO2020140771A1 (en) | Color filter substrate, manufacturing method therefor, and display device | |
| CN112259533B (en) | White balance implementation method based on quantum dot color conversion | |
| CN105425452A (en) | Backlight module and display device | |
| KR20220113845A (en) | Color liquid crystal displays and display backlights | |
| CN109426034A (en) | Liquid crystal display device | |
| CN107807473A (en) | Light-converting material encapsulating structure, backlight module and display device | |
| KR102298922B1 (en) | Liquid crystal display device | |
| CN104503130B (en) | A kind of color membrane substrates, display panel and display device | |
| WO2019109603A1 (en) | Quantum dot panel and display apparatus | |
| US20130250209A1 (en) | High Color Expression Display Device and Method for Adjusting Displayed Color | |
| CN114721184B (en) | Display device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |