CN114035363A - Display panel and quantum dot color film substrate - Google Patents
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- CN114035363A CN114035363A CN202111412210.8A CN202111412210A CN114035363A CN 114035363 A CN114035363 A CN 114035363A CN 202111412210 A CN202111412210 A CN 202111412210A CN 114035363 A CN114035363 A CN 114035363A
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- 239000000758 substrate Substances 0.000 title claims abstract description 45
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- 239000002904 solvent Substances 0.000 claims description 7
- NAJCQJKJQOIHSH-UHFFFAOYSA-L [Pb](Br)Br.[Cs] Chemical compound [Pb](Br)Br.[Cs] NAJCQJKJQOIHSH-UHFFFAOYSA-L 0.000 claims description 5
- 239000013538 functional additive Substances 0.000 claims description 5
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- 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
- G02F1/133614—Illuminating devices using photoluminescence, e.g. phosphors illuminated by UV or blue light
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Electroluminescent Light Sources (AREA)
- Led Device Packages (AREA)
- Optical Filters (AREA)
Abstract
The embodiment of the invention discloses a display panel and a quantum dot color film substrate, wherein the display panel comprises a first substrate, a quantum dot conversion layer and a color filter layer, a plurality of light-emitting units are distributed in an array mode, the quantum dot conversion layer is arranged on the light emitting side of the light-emitting units and comprises a plurality of green quantum dot conversion parts, each green quantum dot conversion part corresponds to one light-emitting unit, the color filter layer is arranged on one side, away from the light-emitting units, of the quantum dot conversion layer, the color filter layer comprises a plurality of green color blocking blocks in one-to-one correspondence with the plurality of green quantum dot conversion parts, and materials of the green color blocking blocks comprise green pigments and blue light filtering materials. By adding the blue light filtering material in the green color block, the filtering capacity of the green color block on unconverted blue backlight can be improved, so that the color purity of green light is improved.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display panel and a quantum dot color film substrate.
Background
With the development of display technology, quantum dot display technology has received wide attention in the display field. Compared with the traditional fluorescent powder, the quantum dot has the advantages of high fluorescent quantum efficiency, adjustable light-emitting wavelength, narrow half-peak width and the like, so that a display picture with high color gamut and high quality can be obtained.
As a new generation of quantum display, the quantum dot color film technology is rapidly developing. The technology mainly converts blue backlight into red light and green light through red quantum dots and green quantum dots respectively, and then mixes the red light and the green light with blue light in other pixels to realize conversion of various colors. However, since the conversion capability of the green quantum dots to blue light is limited, the problem of transmission of redundant blue light often occurs, which affects the color purity of green light and causes a serious reduction in the display color gamut. Although the color film can be used for filtering light at present, the conventional green color resistor has limited blue light blocking capability, and part of blue light still penetrates through the conventional green color resistor.
Disclosure of Invention
The embodiment of the invention provides a display panel and a quantum dot color film substrate, and aims to solve the technical problems that in the existing quantum dot color film substrate, the conversion capability of a green quantum dot to blue light is limited, the blocking capability of the traditional green color resistance to the blue light is also limited, so that part of the blue light penetrates through the green color resistance to influence the color purity of the green light.
In order to solve the above problems, the technical scheme provided by the invention is as follows:
an embodiment of the present invention provides a display panel, including:
the LED display device comprises a first substrate, a second substrate and a plurality of light emitting units, wherein the first substrate is provided with a plurality of light emitting units in an array distribution;
the quantum dot conversion layer is arranged on the light emitting side of the light emitting unit and comprises a plurality of green quantum dot conversion parts, and each green quantum dot conversion part corresponds to one light emitting unit; and
the color filter layer is arranged on one side, away from the light-emitting unit, of the quantum dot conversion layer and comprises a plurality of green color resistance blocks in one-to-one correspondence with the green quantum dot conversion parts; wherein, the material of the green color block comprises a green pigment and a blue light filtering material.
In some embodiments of the present invention, the blue light filtering material comprises at least one of a down conversion material and a blue light absorbing material.
In some embodiments of the invention, the down conversion material comprises a cesium lead bromide nanocrystal material.
In some embodiments of the present invention, the blue light absorbing material comprises at least one of a semiconductor material and a yellow material.
In some embodiments of the present invention, the bandgap of the semiconductor material is in the range of 2.5eV to 2.8 eV.
In some embodiments of the present invention, the material of the green color block comprises, by weight, 0.1% to 5% of the blue light filtering material, 1% to 15% of the green pigment, 5% to 20% of a reactive monomer, 1% to 10% of a photosensitive resin, 0.1% to 2% of a photoinitiator, 40% to 60% of a solvent, and 0.1% to 2% of a functional additive.
In some embodiments of the present invention, the light emitting unit is a blue light emitting unit, the quantum dot conversion layer further includes a plurality of red quantum dot conversion portions and a plurality of blank portions, and the color filter layer further includes a plurality of red color blocks corresponding to the plurality of red quantum dot conversion portions one to one and a plurality of blue color blocks corresponding to the plurality of blank portions one to one.
The embodiment of the present invention further provides a quantum dot color film substrate, including:
a second substrate;
the color filter layer is arranged on the second substrate and comprises a plurality of green color blocks; and
the quantum dot conversion layer is arranged on the color filter layer and comprises a plurality of green quantum dot conversion parts which are in one-to-one correspondence with the green color resistors; wherein, the material of the green color block comprises a green pigment and a blue light filtering material.
In some embodiments of the present invention, the blue light filtering material comprises at least one of a down conversion material and a blue light absorbing material.
In some embodiments of the invention, the down conversion material comprises a cesium lead bromide nanocrystal material.
In some embodiments of the present invention, the blue light absorbing material comprises at least one of a semiconductor material and a yellow material.
In some embodiments of the present invention, the bandgap of the semiconductor material is in the range of 2.5eV to 2.8 eV.
In some embodiments of the present invention, the material of the green color block comprises, by weight, 0.1% to 5% of the blue light filtering material, 1% to 15% of the green pigment, 5% to 20% of a reactive monomer, 1% to 10% of a photosensitive resin, 0.1% to 2% of a photoinitiator, 40% to 60% of a solvent, and 0.1% to 2% of a functional additive.
In some embodiments of the invention, the quantum dot conversion layer further includes a plurality of red quantum dot conversion portions and a plurality of blank portions, and the color filter layer further includes a plurality of red color blocks corresponding to the plurality of red quantum dot conversion portions one to one, and a plurality of blue color blocks corresponding to the plurality of blank portions one to one.
The invention has the beneficial effects that: the embodiment of the invention provides a display panel and a quantum dot color film substrate, wherein the display panel comprises: the array distribution has a first base plate, quantum dot conversion layer and the colored filter layer of a plurality of luminescence units, the quantum dot conversion layer set up in the light-emitting side of luminescence unit, the quantum dot conversion layer includes a plurality of green quantum dot conversion portions, each green quantum dot conversion portion corresponds one the luminescence unit, the colored filter layer set up in the quantum dot conversion layer deviates from one side of luminescence unit, the colored filter layer include with a plurality of green colour stop blocks of a plurality of green quantum dot conversion portion one-to-one, the material of green colour stop block includes green pigment and strains the blue light material. By adding the blue light filtering material in the green color resistance block, the filtering capacity of the green color resistance on unconverted blue backlight can be improved, and the color purity of green light is improved.
Drawings
Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a quantum dot color film substrate according to an embodiment of the present invention;
fig. 3 is a schematic view of a manufacturing process of a display panel according to an embodiment of the present invention.
Description of reference numerals:
100. a display panel; 11. a first substrate; 12. a light emitting unit; 21. a second substrate; 22. a black matrix; 23. a color filter layer; 231. a red color block; 232. a green color block; 233. a blue color block; 24. a light-shielding layer; 25. a quantum dot conversion layer; 251. a red quantum dot conversion section; 252. a green quantum dot conversion section; 253. a blank quantum dot conversion layer.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it is to be understood that the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
In this application, unless expressly stated or limited otherwise, a first feature is "on" or may comprise first and second features in direct contact, or may comprise first and second features which are not in direct contact but in contact with each other by means of an additional feature between them. Also, the first feature being "on," "over" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature.
The following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.
The invention provides a technical problem that in an existing quantum dot color film substrate, due to the fact that the conversion capacity of a green quantum dot to blue light is limited and the blocking capacity of a traditional green color resistor to the blue light is limited, part of the blue light penetrates through the green color resistor to influence the color purity of the green light, and the technical problem is solved.
The embodiment of the invention provides a display panel 100, which includes a first substrate 11, a plurality of light emitting units 12 distributed on the first substrate 11 in an array manner, a quantum dot conversion layer 25, and a color filter layer 23, wherein the quantum dot conversion layer 25 is disposed on a light emitting side of the light emitting units 12, and the color filter layer 23 is disposed on a side of the quantum dot conversion layer 25 departing from the light emitting units 12. The quantum dot conversion layer 25 includes a plurality of green quantum dot conversion portions 252, and each green quantum dot conversion portion 252 corresponds to one of the light emitting units 12 to convert the backlight light source emitted by the light emitting unit 12 into green light. The color filter layer 23 includes a plurality of green color blocking blocks 232, the green color blocking blocks 232 are respectively in one-to-one correspondence with the green quantum dot conversion portions 252, and the green color blocking blocks 232 are configured to further filter out backlight light sources that are not converted by the green quantum dot conversion portions 252, so as to improve color purity of green light.
The light emitting unit 12 may be at least one of an OLED light emitting unit, an LED light emitting unit, a Mini LED light emitting unit, and a Micro LED light emitting unit. The first substrate 11 may further have pixel driving circuits (not shown) disposed in an array for driving the light emitting units 12 to emit light, and the pixel driving circuits may include a plurality of thin film transistors. In the embodiment of the present invention, the light emitting unit 12 may be a blue light emitting unit, which emits a blue backlight, and the light emitting unit 12 may adopt a blue Mini LED as a backlight.
In order to realize the color display of the display panel, the quantum dot conversion layer 25 further includes a plurality of red quantum dot conversion portions 251 and a plurality of blank portions 253, each of the red quantum dot conversion portions 251 corresponds to one of the light emitting units 12 for converting blue light emitted from the corresponding light emitting unit 12 into red light, each of the blank portions 253 also corresponds to one of the light emitting units 12, and no quantum dot material is required to be disposed in the blank portion 253, so that the blue light emitted from the corresponding light emitting unit 12 can be directly emitted through the blank portion 253. Correspondingly, the color filter layer 23 further includes a plurality of red color blocks 231 corresponding to the plurality of red quantum dot conversion portions 251 one to one, and a plurality of blue color blocks 233 corresponding to the plurality of blank portions 253 one to one.
Each of the green quantum dot conversion portions 252 is adjacent to one of the red quantum dot conversion portions 251 and one of the blank portions 253, each light emitting unit forms a sub-pixel, and three light emitting units 12 corresponding to two adjacent green quantum dot conversion portions 252, one red quantum dot conversion portion 251 and one blank portion 253 form a pixel unit.
Since the transmittance of the red color block 231 with respect to light having a wavelength of 580nm or less is almost zero, even if the blue backlight is not completely converted by the red quantum dot conversion section 251, the unconverted blue light can be absorbed by the red color block 231, and thus the blue light can be filtered by the red color block 231. However, the conventional green color resistor has a limited blue light blocking capability, and part of unconverted blue light can also pass through the green color resistor block 232, so that in the embodiment of the present invention, the blue light filtering material is further doped in the green color resistor block 232 to enhance the blue light blocking capability of the green color resistor block 232, thereby improving the color purity and the display color gamut of the green light.
Specifically, the material of the green color block 232 includes a green pigment and a blue light filtering material. In some embodiments of the present invention, the blue light filtering material comprises at least one of a down conversion material and a blue light absorbing material. The down-conversion material is capable of absorbing one high energy photon and emitting two low energy photons, so that the down-conversion material can convert blue light into low energy light, and the green pigment can block the low energy light. The blue light absorbing material can directly absorb the blue light, thereby improving the filtering capacity of the green color block 232 to the blue light.
In an embodiment of the invention, the down-conversion material comprises a cesium lead bromide nanocrystal material that can convert blue light to low energy light.
The blue light absorbing material may be at least one of a yellow material and a semiconductor material.
Specifically, the yellow material includes at least one of an organic yellow pigment and an inorganic yellow pigment. The yellow material has a wavelength of 570-580 nm and a half-peak width of 30-100 nm. The transmittance of the yellow material under 470nm is close to zero, so that the yellow material can completely absorb blue light, and has a certain transmittance at the peak of green light, so that part of green light can be allowed to transmit.
The organic yellow pigment comprises at least one of monoazo, biazo, quinophthalone and other materials. The inorganic yellow pigment includes cadmium yellow.
The semiconductor material may be an inorganic semiconductor material. The band gap of the semiconductor material is in the range of 2.5eV to 2.8eV to absorb the blue light at 460 nanometers. In a specific embodiment, the semiconductor material may be BiVO4，BiVO4The band gap of the crystal is 2.8eV, and the crystal can play a role in absorbing 460 nm blue light.
The green color block comprises the following materials in percentage by weight: 0.1-5% of the blue light filtering material, 1-15% of the green pigment, 5-20% of reactive monomer, 1-10% of photosensitive resin, 0.1-2% of photoinitiator, 40-60% of solvent and 0.1-2% of functional additive. The reactive monomer can be an acrylic monomer, and plays a role in generating a compact film through crosslinking polymerization. The photoinitiator may initiate polymerization of the reactive monomer under irradiation of light, and may be AIBN (Azodiisobutyronitrile). The solvent serves to dissolve and adjust the viscosity of the solution, and may be PGMEA (propylene glycol methyl ether acetate). The functional additive may include a co-solvent, such as an alcoholic co-solvent.
Referring to fig. 1, in the embodiment of the invention, a shielding layer 24 is disposed between two adjacent film layers of the red quantum dot conversion portion 251, the green quantum dot conversion portion 252 and the blank portion 253, an orthogonal projection of the shielding layer 24 on the light emitting unit 12 is located between the adjacent light emitting units 12, and the shielding layer 24 may be a black material for shielding light and preventing optical crosstalk. The shielding layer 24 also acts as a dam to prevent ink from overflowing a set boundary when ink-jet printing quantum dot materials.
The orthographic projections of the red quantum dot conversion part 251, the green quantum dot conversion part 252, and the blank part 253 on the light-emitting units 12 all cover the corresponding light-emitting units 12.
A black matrix 22 is disposed between adjacent color resist layers of the red color resist 231, the green color resist 232, and the blue color resist 233 to prevent crosstalk. The orthographic projection of the red color block 231 on the red quantum dot conversion part 251 covers the red quantum dot conversion part 251, the orthographic projection of the green color block 232 on the green quantum dot conversion part 252 covers the green quantum dot conversion part 252, and the orthographic projection of the blue color block 233 on the blank part 253 covers the blank part 253.
The material of the red quantum dot conversion part 251 includes red quantum dot ink, which may specifically include a solvent and a perovskite material for emitting red light, such as CH3NH3PbBrxI3-x、CsPbBrxI3-xAnd the like. The material of the green quantum dot conversion region 252 includes a green quantum dot ink including a solvent and a perovskite material for emitting green light, such as CH3NH3PbBr3、CsPbBr3。
In some embodiments, the material of the blank 253 may include a blank ink containing scattering particles, in which the perovskite material is replaced with the scattering particles compared to the red and green quantum dot inks. In other embodiments, the blank 253 may not include any material, that is, the region where the blank 253 is located may be left blank when the quantum dot conversion layer 25 is prepared.
In the embodiment of the present invention, the quantum dot conversion layer 25 may be directly prepared on the first substrate 11 having the light emitting unit 12, or may be prepared by a separate substrate and then attached to the first substrate 11.
As shown in fig. 2, an embodiment of the present invention further provides a quantum dot color filter substrate 20, where the quantum dot color filter substrate 20 includes the color filter layer 23 and the quantum dot conversion layer 25 mentioned in any of the embodiments.
Specifically, the quantum dot color filter substrate 20 includes a second substrate 21, a color filter layer 23 disposed on the second substrate 21, and a quantum dot conversion layer 25 disposed on the color filter layer 23. The structures and materials of the color filter layer 23 and the quantum dot conversion layer 25 can refer to the descriptions in the above embodiments, and are not described herein again.
The black matrix 22 is disposed on the second substrate 21, and the shielding layer 24 is disposed on the black matrix 22.
As shown in fig. 3, based on the quantum dot color film substrate 20, a method for manufacturing the display panel 100 according to an embodiment of the present invention includes: preparing a black matrix 22 and a color filter layer 23 on the second substrate 21; preparing a shielding layer 24 on the black matrix 22; respectively printing red quantum dot ink, green quantum dot ink and blank ink in corresponding areas in an ink-jet printing mode, and curing to form a film to form the quantum dot conversion layer 25; and (3) carrying out pair-combination bonding on the quantum dot color film substrate 20 with the prepared quantum dot conversion layer 25 and the first substrate 11 with the formed light-emitting unit 12 to obtain the display panel 100.
To sum up, the embodiment of the present invention provides a display panel and a quantum dot color filter substrate, the display panel includes a first substrate 11 having a plurality of light emitting units 12 distributed in an array, a quantum dot conversion layer 25 and a color filter layer 23, the quantum dot conversion layer 25 is disposed on a light emitting side of the light emitting units 12, the quantum dot conversion layer 25 includes a plurality of green quantum dot conversion portions 252, each of the green quantum dot conversion portions 252 corresponds to one of the light emitting units 12, the color filter layer 23 is disposed on a side of the quantum dot conversion layer 25 away from the light emitting units 12, the color filter layer 23 includes a plurality of green color blocking blocks 232 corresponding to the plurality of green quantum dot conversion portions 252 one to one, and the green color blocking blocks 232 are made of a green pigment and a blue light filtering material. By adding a blue light filtering material in the green color block 232, the filtering capability of the green color block on the unconverted blue backlight can be improved, thereby improving the color purity of the green light.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
The display panel and the quantum dot color film substrate provided by the embodiment of the invention are described in detail above, and the principle and the implementation of the invention are explained in the present document by applying specific examples, and the description of the above embodiments is only used to help understanding the technical scheme and the core idea of the invention; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A display panel, comprising:
the LED display device comprises a first substrate, a second substrate and a plurality of light emitting units, wherein the first substrate is provided with a plurality of light emitting units in an array distribution;
the quantum dot conversion layer is arranged on the light emitting side of the light emitting unit and comprises a plurality of green quantum dot conversion parts, and each green quantum dot conversion part corresponds to one light emitting unit; and
the color filter layer is arranged on one side, away from the light-emitting unit, of the quantum dot conversion layer and comprises a plurality of green color resistance blocks in one-to-one correspondence with the green quantum dot conversion parts; wherein the content of the first and second substances,
the material of the green color block comprises a green pigment and a blue light filtering material.
2. The display panel of claim 1 wherein the blue light filtering material comprises at least one of a down conversion material and a blue light absorbing material.
3. The display panel of claim 2, wherein the down-conversion material comprises cesium lead bromide nanocrystal material.
4. The display panel of claim 2, wherein the blue light absorbing material comprises at least one of a semiconductor material and a yellow material.
5. The display panel according to claim 4, wherein the band gap of the semiconductor material is 2.5 to 2.8 eV.
6. The display panel of claim 2, wherein the green color block is made of a material comprising, in weight percent:
0.1% -5% of the blue light filtering material;
1% -15% of the green pigment;
5 to 20 percent of reactive monomer;
1-10% of photosensitive resin;
0.1 to 2 percent of photoinitiator;
40-60% of solvent; and
0.1 to 2 percent of functional additive.
7. The display panel according to claim 1, wherein the light emitting units are blue light emitting units, the quantum dot conversion layer further comprises a plurality of red quantum dot conversion portions and a plurality of blank portions, and the color filter layer further comprises a plurality of red color resist blocks in one-to-one correspondence with the plurality of red quantum dot conversion portions and a plurality of blue color resist blocks in one-to-one correspondence with the plurality of blank portions.
8. A quantum dot color film substrate is characterized by comprising:
a second substrate;
the color filter layer is arranged on the second substrate and comprises a plurality of green color blocks; and
the quantum dot conversion layer is arranged on the color filter layer and comprises a plurality of green quantum dot conversion parts which are in one-to-one correspondence with the green color resistors; wherein the content of the first and second substances,
the material of the green color block comprises a green pigment and a blue light filtering material.
9. The quantum dot color film substrate of claim 8, wherein the blue light filtering material comprises at least one of a down-conversion material and a blue light absorbing material.
10. The quantum dot color film substrate of claim 9, wherein the down-conversion material comprises a cesium lead bromide nanocrystal material.
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