CN111668274B - Display panel, display device and preparation method - Google Patents
Display panel, display device and preparation method Download PDFInfo
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- CN111668274B CN111668274B CN202010567435.XA CN202010567435A CN111668274B CN 111668274 B CN111668274 B CN 111668274B CN 202010567435 A CN202010567435 A CN 202010567435A CN 111668274 B CN111668274 B CN 111668274B
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/30—Devices specially adapted for multicolour light emission
- H10K59/38—Devices specially adapted for multicolour light emission comprising colour filters or colour changing media [CCM]
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- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/86—Arrangements for improving contrast, e.g. preventing reflection of ambient light
- H10K50/865—Arrangements for improving contrast, e.g. preventing reflection of ambient light comprising light absorbing layers, e.g. light-blocking layers
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
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Abstract
The embodiment of the application provides a display panel, a display device and a preparation method. The display panel includes: the substrate, the light-emitting diode device layer, the color film layer and the black matrix layer are sequentially stacked; the color film layer comprises a plurality of color resistance units, each color resistance unit comprises three color resistances, the three color resistances comprise a first color resistance, a second color resistance and a third color resistance, the wavelength of the first color is greater than that of the second color, and the wavelength of the second color is greater than that of the third color; the black matrix layer is provided with a plurality of openings corresponding to the color resistors; in the color resistance, the ratio of the white balance factor of the first color resistance to the white balance factor of the third color resistance is a preset value, and the white balance factor of the third color resistance is the minimum; the white balance factor is the product of the area of the color resistance corresponding to the exposed opening and the maximum value of the transmittance of the color resistance. The embodiment of the application can adjust the display panel to realize integral black visual perception when the display panel is turned off, and reduce the power consumption.
Description
Technical Field
The application relates to the technical field of display panels, in particular to a display panel, a display device and a preparation method.
Background
As the application of the display panel is more and more extensive, the requirement for the display panel is also more and more high. The display panel not only gives attention to the teaching of white balance of color display, but also gives attention to a black-in-one visual feeling when the display is not turned off. Therefore, polarizer manufacturers and manufacturers of high-level display panels are both dedicated to improving the color cast defect (generally red or violet) of polarizers, and avoiding the influence of color difference caused by external reflected light on the appearance and color accuracy of products.
At present, OLED (Organic Light-Emitting Diode) display panels all have a polarizer, and the transmittance of a polarizer is less than 50%, so that the power consumption of the OLED display panel is increased by more than 2 times.
Disclosure of Invention
The application provides a display panel, a display device and a preparation method aiming at the defects of the existing mode, and aims to solve the technical problem that the display panel has obvious color when being shut down in the prior art.
In a first aspect, an embodiment of the present application provides a display panel, including: the substrate, the light-emitting diode device layer, the color film layer and the black matrix layer are sequentially stacked;
the color film layer comprises a plurality of color resistance units, each color resistance unit comprises three color resistances, the three color resistances comprise a first color resistance, a second color resistance and a third color resistance, the wavelength of the first color is greater than that of the second color, and the wavelength of the second color is greater than that of the third color;
the black matrix layer is provided with a plurality of openings corresponding to the color resistors;
in the color resistance, the ratio of the white balance factor of the first color resistance to the white balance factor of the third color resistance is a preset value, and the white balance factor of the third color resistance is the minimum;
the white balance factor is the product of the area of the color resistance corresponding to the exposed opening and the maximum value of the transmittance of the color resistance.
In one possible implementation, the three color resistances include at least one of:
the preset value is 1-2;
the ratio of the white balance factor of the second color resistance to the white balance factor of the third color resistance ranges from 1 to 1.5.
In one possible implementation, the first color resistor is a red color resistor, the second color resistor is a green color resistor, and the third color resistor is a blue color resistor.
In one possible implementation manner, an anti-reflection layer is arranged on one side of the black matrix layer far away from the color film layer.
In one possible implementation, the light emitting diode device layer is a white light emitting diode device layer.
In one possible implementation, the anode layer of the light emitting diode device layer is a reflective electrode, and the cathode layer of the light emitting diode device layer is a transparent electrode;
the transparent electrode has a transmittance of greater than 70% at a wavelength in the range of 400 to 700nm (nanometers).
In a second aspect, an embodiment of the present application further provides a display device, which includes the display panel of the first aspect.
In a third aspect, an embodiment of the present application further provides a method for manufacturing a display panel, which is applied to the display panel of the first aspect, and includes the following steps:
forming a light emitting diode device layer on a substrate;
forming a color film layer on one side of the light-emitting diode device layer, which is far away from the light-emitting layer, so that the ratio of the white balance factor of the first color resistance to the white balance factor of the third color resistance of the color film layer is a preset value, and the white balance factor of the third color resistance is minimum;
and forming a black matrix layer on one side of the color film layer, which is far away from the cathode layer, so that the openings of the black matrix layer correspond to the color resistors of the color film layer one by one.
In a possible implementation manner, forming a color film layer on a side of the light emitting diode device layer away from the light emitting layer, so that a ratio of a white balance factor of the first color resistance of the color film layer to a white balance factor of the third color resistance is a preset value, and a white balance factor of the third color resistance is minimum, including:
forming a color film layer on one side of the light-emitting diode device layer, which is far away from the light-emitting layer, so that the ratio of the white balance factor of the first color resistance to the white balance factor of the third color resistance of the color film layer is 1-2; and/or the presence of a gas in the gas,
and forming a color film layer on one side of the light-emitting diode device layer, which is far away from the light-emitting layer, so that the ratio of the white balance factor of the second color resistance to the white balance factor of the third color resistance ranges from 1 to 1.5.
In one possible implementation manner, forming a color film layer on a side of the light emitting diode device layer away from the light emitting layer includes:
determining whether the ratio of the white balance factor of the first color resistance to the white balance factor of the third color resistance is greater than a preset value;
if the ratio of the white balance factor of the first color resistance to the white balance factor of the third color resistance is larger than a preset value, increasing the thickness of the first color resistance or reducing the thickness of the third color resistance until the ratio of the white balance factor of the first color resistance to the white balance factor of the third color resistance is a preset value; the transmittance of the color resistance and the thickness of the color resistance accord with the beer-Lambert law;
and if the ratio of the white balance factor of the first color resistance to the white balance factor of the third color resistance is smaller than the preset value, reducing the thickness of the first color resistance or increasing the thickness of the third color resistance until the ratio of the white balance factor of the first color resistance to the white balance factor of the third color resistance is the preset value.
The technical scheme provided by the embodiment of the application has the following beneficial technical effects:
the utility model provides a display panel's various rete exposes the open-ended area on black matrix layer through the transmittance and the color resistance correspondence of adjustment color resistance, also be exactly adjustment white balance factor, make the white balance factor of first color resistance and the white balance factor's of third color resistance ratio be the default, the white balance factor of third color resistance is minimum, can adjust display panel's impression under the non-light-emitting state, realize the visual perception of the integrative black high static contrast of display screen, thereby solve display panel when the shutdown obvious colour technical problem. Meanwhile, the display panel provided by the embodiment of the application does not adopt a polaroid, and adopts the structure of the color film layer and the black matrix layer, so that the power consumption is reduced.
The color film layer of the display panel can also improve the color accuracy of the display panel in the light-emitting state by adjusting the white balance factor of the color resistance. Moreover, the white balance factor for adjusting the color resistance of the display panel in the embodiment of the application is a quantifiable and easy-to-operate mode, and has practicability, and the preparation process of the display panel is convenient and easy to realize.
Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.
Drawings
The foregoing and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic longitudinal sectional structural diagram of a display panel according to an embodiment of the present disclosure;
fig. 2 is a schematic longitudinal sectional structural view of another display panel provided in an embodiment of the present application;
fig. 3 is a schematic view of a layout structure of an opening of a black matrix layer of a display panel exposing each color resistor from a top view according to an embodiment of the present disclosure;
FIG. 4 is a schematic diagram of an average reflection spectrum of the display panel of FIG. 3 according to an embodiment of the present disclosure;
fig. 5 is a schematic structural diagram illustrating that each color resistor is exposed through an opening of a black matrix layer of another display panel according to an embodiment of the present disclosure;
FIG. 6 is a diagram illustrating an average reflection spectrum of the display panel of FIG. 5 according to an embodiment of the present disclosure;
fig. 7 is a schematic structural diagram illustrating that each color resistor is exposed through an opening of a black matrix layer of another display panel according to an embodiment of the present disclosure;
FIG. 8 is a schematic diagram of an average reflection spectrum of the display panel of FIG. 7 according to an embodiment of the present disclosure;
fig. 9 is a flowchart of a method for manufacturing a display panel according to an embodiment of the present disclosure.
Reference numerals:
100-a substrate;
200-light emitting diode device layer, 210-anode layer, 220-light emitting layer, 230-cathode layer;
300-color film layer, 310-color resistance, 311-first color resistance, 312-second color resistance, 313-third color resistance;
400-black matrix layer, 410-opening;
500-anti-reflection layer.
Detailed Description
Reference will now be made in detail to the present application, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar parts or parts having the same or similar functions throughout. In addition, if a detailed description of the known art is not necessary for illustrating the features of the present application, it is omitted. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.
It will be understood by those within the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Further, "connected" or "coupled" as used herein may include wirelessly connected or wirelessly coupled. As used herein, the term "and/or" includes all or any element and all combinations of one or more of the associated listed items.
The following describes the technical solutions of the present application and how to solve the above technical problems with specific embodiments.
An embodiment of the present application provides a display panel, as shown in fig. 1, the display panel includes: the substrate 100, the light emitting diode device layer 200, the color film layer 300 and the black matrix layer 400 are sequentially stacked.
As shown in fig. 1 and fig. 3, the color film layer 300 includes a plurality of color resists 310, each of the color resists 310 includes three color resists 310, each of the three color resists 310 includes a first color resist 311, a second color resist 312 and a third color resist 313, a wavelength of the first color is greater than a wavelength of the second color, and a wavelength of the second color is greater than a wavelength of the third color.
As shown in fig. 1 and 3, the black matrix layer 400 has a plurality of openings 410 corresponding to the color resistors 310. Each opening 410 corresponds to one color resistor 310 for light transmission of the color resistor 310.
In the color resistor 310, the ratio of the white balance factor of the first color resistor 311 to the white balance factor of the third color resistor 313 is a preset value, and the white balance factor of the third color resistor 313 is the minimum.
The white balance factor is the product of the area of the color resistor 310 corresponding to the exposed opening 410 and the maximum transmittance of the color resistor 310.
The display panel's of this application embodiment color film layer 300 is through the area that the transmittance of adjustment color resistance 310 and color resistance 310 correspond exposure opening 410, also be exactly adjustment white balance factor, make the white balance factor of first color resistance 311 and the white balance factor of third color resistance 313 be the default, the white balance factor of third color resistance 313 is minimum, can adjust the impression of display panel under the non-light-emitting state, realize the visual perception of the integrative black high static contrast of display screen, thereby solve the technical problem of display panel obvious colour when the shutdown. Meanwhile, the display panel of the embodiment of the application does not adopt a polaroid, and adopts the structure of the color film layer 300 and the black matrix layer 400, so that the power consumption is reduced.
The color film layer 300 of the display panel of the embodiment of the application can also improve the color accuracy of the display panel in the light-emitting state by adjusting the white balance factor of the color resistance. Moreover, the white balance factor for adjusting the color resistance of the display panel in the embodiment of the application is a quantifiable and easy-to-operate mode, and has practicability, and the preparation process of the display panel is convenient and easy to realize.
In some embodiments, the three color resistances 310 include at least one of: the preset value is 1-2; the ratio of the white balance factor of the second color resistor 312 to the white balance factor of the third color resistor 313 is in the range of 1-1.5. Specifically, the values of the preset values include 1 and 2, and the ratio range of the white balance factor of the second color resistor 312 to the white balance factor of the third color resistor 313 includes 1 and 1.5.
Optionally, the preset value ranges from 1.2 to 1.5. The ratio of the white balance factor of the second color resistor 312 to the white balance factor of the third color resistor 313 is in the range of 1.1-1.3. Specifically, the values of the preset values include 1.2 and 1.5, and the ratio range of the white balance factor of the second color resistor 312 to the white balance factor of the third color resistor 313 includes 1.1 and 1.3.
In some embodiments, the first color resistor 311 is a red resistor, the second color resistor 312 is a green resistor, and the third color resistor 313 is a blue resistor.
Alternatively, each color resistance unit has only three color resistances, namely a red color resistance, a green color resistance and a blue color resistance.
In some embodiments, referring to fig. 2, an anti-reflection layer 500 is disposed on a side of the black matrix layer 400 away from the color film layer 300. Anti-reflection (AR) layers are used to reduce the intensity of reflected light.
In some embodiments, the light emitting diode device layer 200 is a white light emitting diode device layer 200. Specifically, the White Light Emitting Diode device layer 200 is a White Light Emitting Diode (White led). Alternatively, the LED device layer 200 may be an LED (Light-Emitting Diode). Specifically, the Light Emitting Diode device layer 200 may also be an OLED (Organic Light-Emitting Diode).
In some embodiments, referring to fig. 2, the light emitting diode device layer 200 includes an anode layer 210, a light emitting layer 220, and a cathode layer 230, which are sequentially stacked. The anode layer 210 is disposed on the substrate 100. The anode layer 210 of the light emitting diode device layer 200 is a reflective electrode, and the cathode layer 230 of the light emitting diode device layer 200 is a transparent electrode.
Optionally, the transparent electrode has a transmittance of greater than 70% at a wavelength in the range of 400 to 700nm (nanometers). The light emitting diode device layer 200 employing the transparent electrode and the reflective electrode is free of a microcavity.
Specifically, the white balance factor is related to the area of the color resistor 310 corresponding to the exposed opening 410 and the maximum value of the transmittance of the color resistor 310. In practical applications, the inventor of the present application finds that the white balance factor can form a smooth and continuous curve with a small variation range under different ambient light conditions under reasonable self-luminescence and color films, and the white balance factor controlling the color resistor 310 has a high practicability, and can achieve the technical effects of the present application under the conditions of the embodiments of the present application.
As an example, referring to fig. 3, a schematic diagram in which the opening of the black matrix layer 400 exposes the first color resist 311, the second color resist 312, and the third color resist 313 is shown. Specifically, the first color resistor 311 is a red resistor, the second color resistor 312 is a green resistor, and the third color resistor 313 is a blue resistor. The white balance factor of each color resistor 310 of the display panel of the embodiment of the application has the following relevant data:
the area ratio of each color resistor 310 corresponding to the exposed opening 410, red color resistor: green color resistance: blue color resistance = 0.96. When the area of the exposed opening 410 corresponding to each color resistor 310 is the same as the area of the corresponding opening 410, the area of the exposed opening 410 corresponding to each color resistor 310 is the aperture ratio of each color resistor 310.
Maximum ratio of transmittance of each color resist 310, red color resist: green color resistance: blue color resistance = 1.34;
the white balance factor is the product of the area of the color resistor 310 corresponding to the exposed opening 410 and the maximum transmittance of the color resistor 310, and the respective proportions are multiplied correspondingly to obtain:
white balance factor ratio for each color resistor 310, red color resistor: green color resistance: blue color resistance =1.29:1. the ratio of the white balance factors of the color resistors 310 meets the requirements of the white balance factors of the color resistors 310 of the embodiment of the present application.
Based on the above embodiments, referring to fig. 4, the state of the display panel is shown under an illumination environment (black body radiation as a standard light source) of one color temperature of 7000K (kelvin temperature), CIEx, y = (0.306,0.317). The abscissa is the wavelength nm of light (nm) and the ordinate is the intensity a.u. (arb. Unit, arbitrary units, describing a relative relationship), the display panel appears black (white) with no color difference, still showing a color temperature of about 7000K and a chromaticity of (0.306,0.317).
As an example, referring to fig. 5, a schematic diagram in which the openings of the black matrix layer 400 expose the first color resists 311, the second color resists 312, and the third color resists 313 is shown. Specifically, the first color resistor 311 is a red resistor, the second color resistor 312 is a green resistor, and the third color resistor 313 is a blue resistor. The white balance factor of each color resistor 310 of the display panel of the embodiment of the application has the following relevant data:
the area ratio of each color resistor 310 corresponding to the exposed opening 410, red color resistor: green color resistance: blue color resistance = 0.93;
maximum ratio of transmittance of each color resist 310, red color resist: green color resistance: blue color resistance = 1.75;
the white balance factor is the product of the area of the color resistor 310 corresponding to the exposed opening 410 and the maximum transmittance of the color resistor 310, and the respective proportions are multiplied correspondingly to obtain:
white balance factor ratio for each color resistor 310, red color resistor: green color resistance: blue color resistance =1.63: 1.25, setting the value of the blue color resistance to 1, namely the ratio of the white balance factors of the color resistances 310, the ratio of the red color resistance: green color resistance: blue color resistance = 1.30. The ratio of the white balance factors of the color resistors 310 meets the requirements of the white balance factors of the color resistors 310 of the embodiment of the present application.
Based on the above-described embodiment, referring to fig. 6, a state of the display panel under an illumination environment (black body radiation as a standard light source) of one color temperature of 3000K (kelvin temperature), CIEx, y = (0.437,0.404) is shown. The display panel appears black (white) without color difference, still shows color temperature of about 3000K and chromaticity (0.437,0.404).
For comparison with the display effect of the display panel of the embodiment of the present application. The inventors of the present application tested that the white balance factor did not satisfy the requirements of the embodiments of the present application. Referring to fig. 7, a schematic diagram of the opening of the black matrix layer 400 exposing the first color resist 311, the second color resist 312, and the third color resist 313 is shown. Specifically, the first color resistor 311 is a red resistor, the second color resistor 312 is a green resistor, and the third color resistor 313 is a blue resistor. The white balance factor of each color resistor 310 of the display panel of the embodiment of the application has the following relevant data:
the area ratio of each color resistor 310 corresponding to the exposed opening 410, red color resistor: green color resistance: blue color resistance = 1.31;
maximum ratio of transmittance of each color resist 310, red color resist: green color resistance: blue color resistance = 2.29;
the white balance factor is the product of the area of the color resistor 310 corresponding to the exposed opening 410 and the maximum transmittance of the color resistor 310, and the respective proportions are multiplied correspondingly to obtain:
white balance factor ratio for each color resistor 310, red color resistor: green color resistance: blue color resistance =3.00:1.82:1.31, setting the value of the blue color resistance to 1, that is, the ratio of the white balance factors of the color resistances 310, the red color resistance: green color resistance: blue color resistance = 2.29. The ratio of the white balance factor of the red color resistor does not meet the requirement of the white balance factor of each color resistor 310 of the embodiments of the present application.
Based on the above embodiments, referring to fig. 8, the state of the display panel in a lighting environment (black body radiation as a standard light source) with a color temperature of 7000K (kelvin temperature), CIEx, y = (0.306,0.317) is shown. The abscissa is the wavelength of light in nm (nanometers), the ordinate is the reflected light intensity a.u. (arb.unit), the display panel exhibits a reddish hue, a color temperature of about 5000K, and a chromaticity of (0.345,0.343).
Therefore, the technical effect of the embodiments of the present application can be achieved by adjusting the white balance factor of each color resistor 310 to meet the requirements of the embodiments of the present application.
Based on the same inventive concept, the embodiment of the present application further provides a display device, which includes the display panel of the embodiment of the present application.
Based on the same inventive concept, an embodiment of the present application further provides a method for manufacturing a display panel, which is applied to the display panel of the embodiment of the present application, and as shown in fig. 9, the method for manufacturing the display panel includes the following steps:
s901, forming a light emitting diode device layer 200 on the substrate 100.
Optionally, forming the light emitting diode device layer 200 on the substrate 100 includes:
forming an anode layer 210 on the substrate 100;
forming a light emitting layer 220 on a side of the anode layer 210 away from the substrate 100;
a cathode layer 230 is formed at the side of the light emitting layer 220 remote from the anode layer 210.
S902, forming the color film layer 300 on a side of the led device layer 200 away from the light emitting layer 220, such that a ratio of a white balance factor of the first color resistor 311 to a white balance factor of the third color resistor 313 of the color film layer 300 is a predetermined value, and a white balance factor of the third color resistor 313 is the smallest.
In some embodiments, forming the color film layer 300 on a side of the led device layer 200 away from the light-emitting layer 220 such that a ratio of a white balance factor of the first color resistor 311 and a white balance factor of the third color resistor 313 of the color film layer 300 is a preset value, and a white balance factor of the third color resistor 313 is the minimum value includes:
forming a color film layer 300 on a side of the led device layer 200 away from the light-emitting layer 220, such that a ratio of a white balance factor of the first color resistor 311 to a white balance factor of the third color resistor 313 of the color film layer 300 is 1-2; and/or the presence of a gas in the gas,
the color film layer 300 is formed on a side of the led device layer 200 away from the light-emitting layer 220, such that a ratio of a white balance factor of the second color resistor 312 to a white balance factor of the third color resistor 313 is in a range of 1 to 1.5.
In some embodiments, forming the color film layer 300 on the side of the led device layer 200 away from the light-emitting layer 220 includes:
determining whether the ratio of the white balance factor of the first color resistance 311 to the white balance factor of the third color resistance 313 is greater than a preset value;
if the ratio of the white balance factor of the first color resistor 311 to the white balance factor of the third color resistor 313 is greater than the preset value, the thickness of the first color resistor 311 is increased or the thickness of the third color resistor 313 is decreased until the ratio of the white balance factor of the first color resistor 311 to the white balance factor of the third color resistor 313 is the preset value; the transmittance of the color resistor 310 and the thickness of the color resistor 310 conform to the beer-lambert law;
if the ratio of the white balance factor of the first color resistor 311 to the white balance factor of the third color resistor 313 is smaller than the preset value, the thickness of the first color resistor 311 is decreased or the thickness of the third color resistor 313 is increased until the ratio of the white balance factor of the first color resistor 311 to the white balance factor of the third color resistor 313 is equal to the preset value.
S903, a black matrix layer 400 is formed on a side of the color film layer 300 away from the cathode layer 230, such that the openings 410 of the black matrix layer 400 correspond to the color resistors 310 of the color film layer 300 one to one.
Optionally, the making of the openings 410 of the black matrix layer 400 in one-to-one correspondence with the color resistors 310 of the color film layer 300 includes:
a photoresist layer is formed on the black matrix layer 400, the photoresist layer is patterned, the black matrix layer 400 is etched by using the patterned photoresist layer as a mask, a plurality of openings corresponding to the color resists 310 of the color film layer 300 one by one are formed, and the remaining photoresist is stripped.
By applying the embodiment of the application, at least the following beneficial effects can be realized:
(1) The display panel of the embodiment of the application can adjust the look and feel of the display panel under the non-luminous state, and the visual perception of the integrative black high static contrast of the display screen is realized, so that the technical problem that the display panel has obvious colors when being shut down is solved. Meanwhile, the display panel of the embodiment of the application does not adopt a polaroid, and adopts the structure of the color film layer 300 and the black matrix layer 400, so that the power consumption is reduced.
(2) The color film layer 300 of the display panel of the embodiment of the application can also improve the color accuracy of the display panel in the light-emitting state by adjusting the white balance factor of the color resistance.
(3) The white balance factor for adjusting the color resistance of the display panel is a quantifiable and easy-to-operate mode, and the display panel has practicability, and the preparation process of the display panel is convenient and easy to realize.
Those of skill in the art will appreciate that the various operations, methods, steps in the processes, acts, or solutions discussed in this application can be interchanged, modified, combined, or eliminated. Further, other steps, measures, or schemes in various operations, methods, or flows that have been discussed in this application can be alternated, altered, rearranged, broken down, combined, or deleted. Further, steps, measures, schemes in the prior art having various operations, methods, procedures disclosed in the present application may also be alternated, modified, rearranged, decomposed, combined, or deleted.
In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, this is done solely for the convenience of describing the application and for simplicity of description and is not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation and, thus, should not be taken as limiting the application.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
In the description herein, particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
It should be understood that, although the steps in the flowcharts of the figures are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and may be performed in other orders unless explicitly stated herein. Moreover, at least a portion of the steps in the flow chart of the figure may include multiple sub-steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, which are not necessarily performed in sequence, but may be performed alternately or alternately with other steps or at least a portion of the sub-steps or stages of other steps.
The foregoing is only a few embodiments of the present application and it should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present application, and that these improvements and modifications should also be considered as the protection scope of the present application.
Claims (8)
1. A display panel, comprising: the substrate, the light-emitting diode device layer, the color film layer and the black matrix layer are sequentially stacked;
the color film layer comprises a plurality of color resistance units, each color resistance unit comprises three color resistances, the three color resistances comprise a first color resistance, a second color resistance and a third color resistance, the wavelength of the first color is greater than that of the second color, and the wavelength of the second color is greater than that of the third color;
the black matrix layer is provided with a plurality of openings corresponding to the color resistors;
in the color resistance, the ratio of the white balance factor of the first color resistance to the white balance factor of the third color resistance is a preset value, and the white balance factor of the third color resistance is the minimum; the preset value is 1~2, and the ratio range of the white balance factor of the second color resistance to the white balance factor of the third color resistance is 1 to 1.5;
the white balance factor is the product of the area of the color resistor correspondingly exposed out of the opening and the maximum value of the transmittance of the color resistor.
2. The display panel of claim 1, wherein the first color resistor is a red color resistor, the second color resistor is a green color resistor, and the third color resistor is a blue color resistor.
3. The display panel of claim 1, wherein an anti-reflection layer is disposed on a side of the black matrix layer away from the color film layer.
4. The display panel of claim 1, wherein the light emitting diode device layer is a white light emitting diode device layer.
5. The display panel according to claim 1, wherein an anode layer of the light emitting diode device layer is a reflective electrode, and a cathode layer of the light emitting diode device layer is a transparent electrode;
the transparent electrode has a transmittance of greater than 70% at a wavelength of 400-700 nm.
6. A display device characterized by comprising the display panel according to any one of claims 1 to 5.
7. A method for manufacturing a display panel, applied to the display panel according to any one of claims 1 to 5, comprising the steps of:
forming a light emitting diode device layer on a substrate;
forming a color film layer on one side of the light emitting diode device layer, which is far away from the light emitting layer, so that the ratio of the white balance factor of the first color resistor to the white balance factor of the third color resistor of the color film layer is a preset value, and the white balance factor of the third color resistor is the minimum value, comprising: forming a color film layer on one side of the light-emitting diode device layer, which is far away from the light-emitting layer, so that the ratio of the white balance factor of the first color resistance to the white balance factor of the third color resistance of the color film layer is 1~2; forming a color film layer on one side of the light-emitting diode device layer, which is far away from the light-emitting layer, so that the ratio of the white balance factor of the second color resistance to the white balance factor of the third color resistance ranges from 1 to 1.5;
and forming a black matrix layer on one side of the color film layer, which is far away from the cathode layer, so that the openings of the black matrix layer correspond to the color resistors of the color film layer one by one.
8. The method for manufacturing a display panel according to claim 7, wherein the forming a color film layer on a side of the light emitting diode device layer away from the light emitting layer comprises:
determining whether the ratio of the white balance factor of the first color resistance to the white balance factor of the third color resistance is greater than a preset value;
if the ratio of the white balance factor of the first color resistance to the white balance factor of the third color resistance is greater than a preset value, increasing the thickness of the first color resistance or decreasing the thickness of the third color resistance until the ratio of the white balance factor of the first color resistance to the white balance factor of the third color resistance is a preset value; the transmittance of the color resistor and the thickness of the color resistor accord with the beer-Lambert law;
and if the ratio of the white balance factor of the first color resistance to the white balance factor of the third color resistance is smaller than a preset value, reducing the thickness of the first color resistance or increasing the thickness of the third color resistance until the ratio of the white balance factor of the first color resistance to the white balance factor of the third color resistance is the preset value.
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| CN115275048B (en) * | 2022-07-20 | 2023-06-06 | 武汉华星光电半导体显示技术有限公司 | Display panel and mobile terminal |
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