CN113745206B - LED display substrate and manufacturing method thereof - Google Patents

LED display substrate and manufacturing method thereof Download PDF

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Publication number
CN113745206B
CN113745206B CN202110905912.3A CN202110905912A CN113745206B CN 113745206 B CN113745206 B CN 113745206B CN 202110905912 A CN202110905912 A CN 202110905912A CN 113745206 B CN113745206 B CN 113745206B
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lamp
lamp bead
beads
bead
display substrate
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CN113745206A (en
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洪志坤
张胜森
欧昌东
郑增强
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Shanghai Jinglai Electronic Technology Co ltd
Wuhan Jingce Electronic Group Co Ltd
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Shanghai Jinglai Electronic Technology Co ltd
Wuhan Jingce Electronic Group Co Ltd
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L25/00—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof
    • H01L25/03—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes
    • H01L25/04—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers
    • H01L25/075—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group H01L33/00
    • H01L25/0753—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group H01L33/00 the devices being arranged next to each other
    • 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
    • G09F9/33—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 being semiconductor devices, e.g. diodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2933/00—Details relating to devices covered by the group H01L33/00 but not provided for in its subgroups
    • H01L2933/0008—Processes
    • H01L2933/0033—Processes relating to semiconductor body packages

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Theoretical Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

The application relates to an LED display substrate and a manufacturing method thereof, and relates to the technical field of LEDs, wherein the LED display substrate is provided with multiple types of lamp beads with different luminous colors, and each type of lamp bead is divided into at least one lamp bead subclass based on the central wavelength of the lamp bead; and each type of the lamp beads is periodically arranged in at least one set direction according to the corresponding lamp bead subclass. According to the application, different types of lamp beads are arranged, the similar lamp beads with offset center spectra are periodically arranged on the display substrate, so that the consistency of the whole color of the display panel is realized, and the utilization rate and the productivity of the display lamp beads are improved.

Description

LED display substrate and manufacturing method thereof
Technical Field
The application relates to the technical field of LEDs, in particular to an LED display substrate and a manufacturing method thereof.
Background
With the development of technology, display products are continuously updated. The development of display technology includes CRT technology, LCD liquid crystal display technology, and OLED display technology. The new display technology has great progress in display picture quality, chroma saturation, contrast and power consumption compared with the previous display technology.
Among various display technologies, mini LEDs, micro LEDs (hereinafter referred to as LEDs) are considered to be the most promising alternatives to next-generation display products. The LED comprises three colors of R, G and B. In the display, the color of the display picture is changed by changing the different intensities of the three-color LED lamp beads, so that the color display is realized. Wherein when all three colors are highlighted, a white color may be displayed. Different intensity changes, displaying different colors. Therefore, on the display substrate, RGB pixels are periodically arranged, realizing the display of the surface. This is also true of LED displays. However, due to the stability problem of the LED lamp bead process, the light emission spectra of different lamp beads are not consistent. For example, the spectrum of the luminescence center of the R LED lamp beads in different areas on the same wafer has deviation of a few nm. The LED lamp beads are arranged at different positions on the display backboard, and the color cast problem of the display panel can be caused due to the problem of uniformity of the pearl spectrum of the lamp.
In order to improve display quality, the current solution is that firstly, the light emission spectrums of different R-type LED display lamp beads are measured, and then the LED lamp beads with the same center wavelength are mounted on a display substrate. The current solution is not beneficial to the improvement of the productivity of the product, and the display products of different batches can have obvious color inconsistency.
In order to solve the above technical problems, an LED display substrate and a manufacturing technology thereof are provided to meet the current testing requirements.
Disclosure of Invention
The application provides an LED display substrate and a manufacturing method thereof, wherein different types of lamp beads are arranged, the similar lamp beads with offset center spectrums are periodically arranged on the display substrate, the consistency of the whole color of a display panel is realized, and the utilization rate and the productivity of the display lamp beads are improved.
In a first aspect, the present application provides an LED display substrate, where the LED display substrate has multiple types of light beads with different light emission colors, and each type of light bead is divided into at least one light bead subclass based on a center wavelength of the light bead;
and each type of the lamp beads is periodically arranged in at least one set direction according to the corresponding lamp bead subclass.
Further, the lamp beads are periodically arranged in at least one set direction according to the corresponding lamp bead types.
Preferably, all the beads are configured to be uniformly distributed on the LED display substrate according to respective corresponding bead types and the corresponding bead types.
Further, the plurality of beads form a bead combination, and the bead combination comprises at least one bead of a bead type;
and the lamp bead combinations are periodically arranged on the LED display substrate.
Further, each type of the light beads in the light bead combination is periodically arranged in at least one set direction according to the corresponding light bead subclass.
Specifically, the lamp bead combination comprises lamp beads of all lamp bead subclasses of all lamp bead types.
Preferably, the lamp beads of different lamp bead types in the lamp bead combination are periodically arranged in at least one set direction.
Preferably, the lamp beads of the same lamp bead type but different lamp bead subclasses in the lamp bead combination are periodically arranged in at least one set direction.
Preferably, when the beads corresponding to the bead types having at least 2 bead types are arranged on the LED display substrate, the bead types of adjacent beads of the same type are different.
In a second aspect, the present application provides another method for manufacturing an LED display substrate, the method including the steps of:
Dividing all the lamp beads into different lamp bead types according to the luminous color;
Dividing each type of lamp beads into at least one lamp bead subclass based on the central wavelength of the lamp beads;
and periodically arranging each type of lamp beads on the LED display substrate according to the requirements in at least one set direction according to the corresponding lamp bead subclasses.
The technical scheme provided by the application has the beneficial effects that:
(1) According to the application, different types of lamp beads are arranged, the similar lamp beads with offset center spectra are periodically arranged on the display substrate, so that the consistency of the whole color of the display panel is realized, and the utilization rate and the productivity of the display lamp beads are improved.
(2) According to the application, the lamp beads of different types are periodically arranged according to the set direction, and different types of display substrates are manufactured, so that different production requirements are met.
(3) According to the application, the plurality of lamp beads form one lamp bead combination, and each lamp bead and each sub-type lamp bead in each lamp bead combination can be periodically arranged, so that each lamp bead and each sub-type lamp bead in each lamp bead can be uniformly distributed, and the problem of display color difference is solved.
(4) The application divides the lamp beads into a plurality of independent lamp bead units, namely a plurality of lamp bead combinations, and arranges the lamp bead combinations, thereby being convenient for more conveniently arranging the lamp beads.
(5) The lamp beads of the adjacent same type are different in subclasses, so that the lamp beads can be reduced in display color difference to a certain extent on the aspect of the formation principle of the display color difference on the basis of no need of uniform arrangement according to strict rules, and the problem of the display color difference is solved to a certain extent.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of a lamp bead layout of the prior art corresponding to an LED display substrate provided in an embodiment of the present application;
fig. 2 is a schematic diagram of a first lamp bead layout of an LED display substrate according to an embodiment of the present application;
FIG. 3 is a schematic diagram of a second bead layout of an LED display substrate according to an embodiment of the present application;
fig. 4 is a schematic diagram of a third lamp bead layout of an LED display substrate according to an embodiment of the present application;
Fig. 5 is a schematic diagram of a fourth lamp bead layout of the LED display substrate according to the embodiment of the present application;
fig. 6 is a schematic diagram of a fifth lamp bead layout of an LED display substrate according to an embodiment of the present application.
Detailed Description
Term interpretation:
LED, lht Emitting Diode, light emitting Diode;
CRT, cathode ray tube;
LCD, liquid CRYSTAL DISPLAY, liquid crystal display;
OLED, organic Light-Emitting Diode, organic Light Emitting semiconductor.
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
Embodiments of the present application are described in further detail below with reference to the accompanying drawings.
The embodiment of the application provides an LED display substrate and a manufacturing method thereof, wherein different types of lamp beads are arranged, the similar lamp beads with offset center spectrums are periodically arranged on the display substrate, the consistency of the whole color of a display panel is realized, and the utilization rate and the productivity of the display lamp beads are improved.
In order to achieve the technical effects, the general idea of the application is as follows:
an LED display substrate is provided with a plurality of types of lamp beads with different luminous colors, wherein each type of lamp bead is divided into at least one lamp bead subclass based on the center wavelength of the lamp bead;
and each type of the lamp beads is periodically arranged in at least one set direction according to the corresponding lamp bead subclass.
Embodiments of the present application are described in further detail below with reference to the accompanying drawings.
In a first aspect, referring to fig. 1 to 6, an embodiment of the present application provides an LED display substrate, where the LED display substrate has multiple types of light beads with different light emission colors, and each type of light bead is divided into at least one light bead subclass based on a center wavelength of the light bead;
each type of the lamp beads is periodically arranged in at least one set direction according to the corresponding lamp bead subclass; wherein,
The reason that the beads are periodically arranged in at least one set direction according to the corresponding bead subclasses is that if the beads of the same type with different center wavelengths are distributed unevenly, the beads of the same type with a certain center wavelength are distributed in a concentrated mode, and certain color display differences exist on the LED display substrate, so that the beads of the corresponding type are required to be periodically arranged in at least one set direction according to the corresponding bead subclasses, and accordingly the color corresponding to the beads is reduced as much as possible in the LED display substrate.
The LED display substrate provided by the embodiment of the application is mainly based on Mini LED or Micro LED technology, has the characteristic of high integration level, and has certain limit requirements on the arrangement and installation of LED lamp beads in the manufacturing process compared with the traditional display substrate for simply arranging the lamp beads.
Specifically, each type of the lamp beads corresponds to one luminous color.
It should be noted that, the lamp beads in the LED display substrate in the embodiment of the present application are illustrated here:
Assume that the LED display substrate has multiple types of lamp beads, taking three types of lamp beads as examples, wherein the three types of lamp beads respectively correspond to different luminous colors and are calibrated as A, B, C lamp beads;
Assuming that the class a lamp bead has three lamp bead subclasses, namely the class a lamp bead comprises three subclasses, wherein the respective central wavelengths are A1, A2 and A3 respectively, in practical cases, the lamp bead may not be all A1, A2 or A3 completely, a wavelength deviation value delta A can be set actually, the lamp bead can be divided into three subclasses correspondingly, and the central wavelength ranges corresponding to the three subclasses are A1+/-delta A、A2±ΔA and A3+/-delta A respectively;
Similarly, assuming that the class B beads have three kinds of bead sub-types, that is, the class B beads include three kinds of sub-types, the respective center wavelengths are B1, B2 and B3, in practical cases, may not be all B1, B2 or B3 completely, a wavelength deviation value Δ B may be actually set, and the three kinds of sub-types may be actually divided into three kinds of sub-types, where the respective center wavelength ranges of the three sub-types are b1±Δ B、B2±ΔB and b3±Δ B;
Similarly, assuming that the class C beads have three kinds of bead sub-types, that is, the class C beads include three kinds of sub-types, the respective center wavelengths are respectively C1, C2 and C3, in practical cases, may not be exactly C1, C2 or C3, a wavelength deviation value Δ C may be actually set, and the three kinds of sub-types may be actually divided into three kinds of sub-types, where the respective center wavelength ranges of the three sub-types are c1±Δ C、C2±ΔC and c3±Δ C;
The difference of the center wavelengths can be obtained by detecting the lamp beads by using detection equipment at the later stage, and can also be judged by different batches during production, namely, the center wavelengths of the same type of lamp beads in the same batch are approximately equal, and the lamp beads belong to the same lamp bead subclass.
It should be noted that, in the embodiment of the present application, the lamp beads with the same color are not necessarily divided into three wavelength batches, and 2 wavelength batches, 3 wavelength batches or more than three wavelength batches may be layered according to the complexity of the process and the uniformity of the incoming materials.
As shown in fig. 1 of the drawings, which is a schematic diagram of a lamp bead layout of an LED display substrate in the prior art, there is a display color difference, and fig. 2 to 5 of the drawings are schematic diagrams of lamp bead layout of an LED display substrate in an embodiment of the present application;
in addition, the embodiments of the present application are not limited to the lamp bead layout shown in fig. 2 to 5 of the drawings.
In the embodiment of the application, the lamp beads of different types are arranged, the similar lamp beads with the center spectrum offset are periodically arranged on the display substrate, the consistency of the whole color of the display panel is realized, and the utilization rate and the productivity of the display lamp beads are improved.
In addition, more importantly, the embodiment of the application performs subclassification by confirming the fine difference of the center wavelength of each type of lamp beads, and regularly arranges the lamp beads of different subclasses under each type of lamp beads, thereby effectively solving the problem of display deviation.
Further, the lamp beads are periodically arranged in at least one set direction according to the corresponding lamp bead types;
The arrangement mode is to meet the use requirements of different LED display substrates, such as RGB three-color bead display, and other multi-color display beads, such as RGBW or RYYB, for example, the beads with different colors are required to be regularly arranged according to the requirements.
Preferably, all the beads are configured to be uniformly distributed on the LED display substrate according to respective corresponding bead types and the corresponding bead types;
not only is the layout form limited, according to the corresponding requirements, one of the conditions in the embodiment of the application is to uniformly distribute the lamp beads with different colors on the LED display substrate, and the lamp beads of different lamp bead subclasses of the lamp beads with different colors are also uniformly distributed,
Therefore, on one hand, the display requirement of the LED display substrate is met, and on the other hand, the problem of regional color deviation of the LED display substrate is solved to a certain extent.
Further, the plurality of beads form a bead combination, and the bead combination comprises at least one bead of a bead type;
and the lamp bead combinations are periodically arranged on the LED display substrate.
Further, each type of the light beads in the light bead combination is periodically arranged in at least one set direction according to the corresponding light bead subclass.
Specifically, the lamp bead combination comprises lamp beads of all lamp bead subclasses of all lamp bead types.
Preferably, the lamp beads of different lamp bead types in the lamp bead combination are periodically arranged in at least one set direction.
Further, the lamp beads of the same lamp bead type but different lamp bead subclasses in the lamp bead combination are periodically arranged in at least one set direction.
The lamp beads are arranged in a lamp bead combination mode, so that on one hand, all the lamp beads and all the sub-type lamp beads in all the lamp beads can be periodically arranged in each lamp bead combination, all the lamp beads and all the sub-type lamp beads in all the lamp beads can be uniformly distributed, and the problem of display color difference is solved;
On the other hand, the lamp beads can be divided into a plurality of independent lamp bead units, namely a plurality of lamp bead combinations, and the lamp bead combinations are arranged, so that the lamp beads are more conveniently arranged, uniform distribution is met, and the problem of display color difference is solved.
Further, when the lamp beads corresponding to the lamp bead types with at least 2 lamp bead sub-types are arranged on the LED display substrate, the lamp bead sub-types of the adjacent lamp beads of the same type are different;
in actual operation, if the display color difference can be arranged according to the periodic arrangement or the uniform arrangement mode, a better display color difference solving effect can be obtained;
However, the reason for forming the display color difference is that the light beads of different subclasses of the same kind of light beads are distributed in an excessively concentrated manner according to the respective light bead classes, so that the display color difference among the different light bead classes is highlighted, if the light beads corresponding to the light bead classes with at least 2 light bead subclasses are arranged on the LED display substrate, the light bead subclasses of the adjacent light beads of the same kind are different, and the display color difference can be reduced to a certain extent on the aspect of the formation principle of the display color difference, so that the problem of the display color difference is solved to a certain extent.
It should be noted that, the LED display substrate in the embodiment of the present application may be mainly an RGB three-color bead display, such as other multi-color display beads, for example RGBW or RYYB;
in addition, in the embodiment of the application, one sub-pixel formed by RGB pixels (lamp beads) is not necessarily arranged in a rectangular or square shape, and is also applicable to other pixel arrangement modes such as diamond, diamond and the like.
The RGB color mode is a color standard in industry, and is to obtain various colors by changing three color channels of red (R), green (G) and blue (B) and overlapping the three color channels, wherein RGB is the color representing the three channels of red, green and blue, and the standard almost comprises all colors perceived by human eyesight, and is one of the most widely used color systems;
The RGBW technology is that a W white sub-pixel is added on the original three primary colors of RGB to form a four-color pixel design, is a Sub Pixel Rendering technology mode, has the consistency of color expression in a new pixel arrangement mode, greatly improves the light transmittance of a liquid crystal panel, has lower power consumption when displaying pictures with the same brightness, and greatly improves the brightness under the condition of the same power consumption, so that the picture has more distinct layers and more transparent pictures;
RYYB is that two yellow pixels (Y) are used for replacing two green pixels (G), so that the RYYB sensor is formed, the light loss problem can be remarkably reduced, and the light quantity can be increased by 40%.
In a second aspect, based on the same design concept of the LED display substrate mentioned in the first aspect, an embodiment of the present application provides a method for manufacturing an LED display substrate, where the method includes the following steps;
S1, dividing all the lamp beads into different lamp bead types according to the luminous color;
S2, dividing each type of lamp beads into at least one lamp bead subclass based on the central wavelength of the lamp beads;
S3, periodically arranging each type of lamp beads on the LED display substrate according to the requirements in at least one set direction according to the corresponding lamp bead subclasses.
The reason that the beads are periodically arranged in at least one set direction according to the corresponding bead subclasses is that if the beads of the same type with different center wavelengths are distributed unevenly, the beads of the same type with a certain center wavelength are distributed in a concentrated mode, certain color display differences exist on the LED display substrate, so that the beads of the corresponding type are required to be periodically arranged in at least one set direction according to the corresponding bead subclasses, and accordingly the color corresponding to the beads is reduced in the possibility of color display deviation as much as possible on the LED display substrate.
It should be noted that, the lamp beads in the LED display substrate in the embodiment of the present application are illustrated here:
Assume that the LED display substrate has multiple types of lamp beads, taking three types of lamp beads as examples, wherein the three types of lamp beads respectively correspond to different luminous colors and are calibrated as A, B, C lamp beads;
Assuming that the class a lamp bead has three lamp bead subclasses, namely the class a lamp bead comprises three subclasses, wherein the respective central wavelengths are A1, A2 and A3 respectively, in practical cases, the lamp bead may not be all A1, A2 or A3 completely, a wavelength deviation value delta A can be set actually, the lamp bead can be divided into three subclasses correspondingly, and the central wavelength ranges corresponding to the three subclasses are A1+/-delta A、A2±ΔA and A3+/-delta A respectively;
Similarly, assuming that the class B beads have three kinds of bead sub-types, that is, the class B beads include three kinds of sub-types, the respective center wavelengths are B1, B2 and B3, in practical cases, may not be all B1, B2 or B3 completely, a wavelength deviation value Δ B may be actually set, and the three kinds of sub-types may be actually divided into three kinds of sub-types, where the respective center wavelength ranges of the three sub-types are b1±Δ B、B2±ΔB and b3±Δ B;
Similarly, assuming that the class C beads have three kinds of bead sub-types, that is, the class C beads include three kinds of sub-types, the respective center wavelengths are respectively C1, C2 and C3, in practical cases, may not be exactly C1, C2 or C3, a wavelength deviation value Δ C may be actually set, and the three kinds of sub-types may be actually divided into three kinds of sub-types, where the respective center wavelength ranges of the three sub-types are c1±Δ C、C2±ΔC and c3±Δ C;
The difference of the center wavelengths can be obtained by detecting the lamp beads by using detection equipment at the later stage, and can also be judged by different batches during production, namely, the center wavelengths of the same type of lamp beads in the same batch are approximately equal, and the lamp beads belong to the same lamp bead subclass.
It should be noted that, in the embodiment of the present application, the lamp beads with the same color are not necessarily divided into three wavelength batches, and 2 wavelength batches, 3 wavelength batches or more than three wavelength batches may be layered according to the complexity of the process and the uniformity of the incoming materials.
In the embodiment of the application, the lamp beads of different types are arranged, the similar lamp beads with the center spectrum offset are periodically arranged on the display substrate, the consistency of the whole color of the display panel is realized, and the utilization rate and the productivity of the display lamp beads are improved.
In addition, more importantly, the embodiment of the application performs subclassification by confirming the fine difference of the center wavelength of each type of lamp beads, and regularly arranges the lamp beads of different subclasses under each type of lamp beads, thereby effectively solving the problem of display deviation.
Further, the manufacturing method of the LED display substrate further comprises the following steps:
Arranging various lamp beads periodically in at least one set direction according to the corresponding lamp bead types;
The arrangement mode is to meet the use requirements of different LED display substrates, such as RGB three-color bead display, and other multi-color display beads, such as RGBW or RYYB, for example, the beads with different colors are required to be regularly arranged according to the requirements.
Preferably, in the method for manufacturing an LED display substrate, all the beads are configured to be uniformly distributed on the LED display substrate according to respective corresponding bead types and the corresponding bead types;
not only is the layout form limited, according to the corresponding requirements, one of the conditions in the embodiment of the application is to uniformly distribute the lamp beads with different colors on the LED display substrate, and the lamp beads of different lamp bead subclasses of the lamp beads with different colors are also uniformly distributed,
Therefore, on one hand, the display requirement of the LED display substrate is met, and on the other hand, the problem of regional color deviation of the LED display substrate is solved to a certain extent.
Further, the manufacturing method of the LED display substrate further comprises the following steps:
forming a plurality of lamp beads into a lamp bead combination, wherein the lamp bead combination comprises at least one lamp bead of a lamp bead type;
And combining a plurality of lamp beads on the LED display substrate to periodically arrange.
Further, the manufacturing method of the LED display substrate further comprises the following steps:
and periodically arranging each type of the lamp beads in the lamp bead combination in at least one set direction according to the corresponding lamp bead subclasses.
Specifically, in the method for manufacturing the LED display substrate, the lamp bead combination includes lamp beads of all lamp bead subclasses of all lamp bead types.
Further, the manufacturing method of the LED display substrate further comprises the following steps:
and periodically arranging the lamp beads of different lamp bead types in the lamp bead combination in at least one set direction.
Further, the manufacturing method of the LED display substrate further comprises the following steps:
and periodically arranging the lamp beads of the same lamp bead type but different lamp bead subclasses in the lamp bead combination in at least one set direction.
The lamp beads are arranged in a lamp bead combination mode, so that on one hand, all the lamp beads and all the sub-type lamp beads in all the lamp beads can be periodically arranged in each lamp bead combination, all the lamp beads and all the sub-type lamp beads in all the lamp beads can be uniformly distributed, and the problem of display color difference is solved;
On the other hand, the lamp beads can be divided into a plurality of independent lamp bead units, namely a plurality of lamp bead combinations, and the lamp bead combinations are arranged, so that the lamp beads are more conveniently arranged, uniform distribution is met, and the problem of display color difference is solved.
Further, in the method for manufacturing the LED display substrate, when the beads corresponding to the bead types having at least 2 bead types are arranged on the LED display substrate, the bead types of adjacent bead types of the same type are different;
in actual operation, if the display color difference can be arranged according to the periodic arrangement or the uniform arrangement mode, a better display color difference solving effect can be obtained;
However, the reason for forming the display color difference is that the light beads of different subclasses of the same kind of light beads are distributed in an excessively concentrated manner according to the respective light bead classes, so that the display color difference among the different light bead classes is highlighted, if the light beads corresponding to the light bead classes with at least 2 light bead subclasses are arranged on the LED display substrate, the light bead subclasses of the adjacent light beads of the same kind are different, and the display color difference can be reduced to a certain extent on the aspect of the formation principle of the display color difference, so that the problem of the display color difference is solved to a certain extent.
It should be noted that, the LED display substrate in the embodiment of the present application may be mainly an RGB three-color bead display, such as other multi-color display beads, for example RGBW or RYYB;
in addition, in the embodiment of the application, one sub-pixel formed by RGB pixels (lamp beads) is not necessarily arranged in a rectangular or square shape, and is also applicable to other pixel arrangement modes such as diamond, diamond and the like.
The RGB color mode is a color standard in industry, and is to obtain various colors by changing three color channels of red (R), green (G) and blue (B) and overlapping the three color channels, wherein RGB is the color representing the three channels of red, green and blue, and the standard almost comprises all colors perceived by human eyesight, and is one of the most widely used color systems;
The RGBW technology is that a W white sub-pixel is added on the original three primary colors of RGB to form a four-color pixel design, is a Sub Pixel Rendering technology mode, has the consistency of color expression in a new pixel arrangement mode, greatly improves the light transmittance of a liquid crystal panel, has lower power consumption when displaying pictures with the same brightness, and greatly improves the brightness under the condition of the same power consumption, so that the picture has more distinct layers and more transparent pictures;
RYYB is that two yellow pixels (Y) are used for replacing two green pixels (G), so that the RYYB sensor is formed, the light loss problem can be remarkably reduced, and the light quantity can be increased by 40%.
It should be noted that in the present application, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises an element.
The foregoing is merely exemplary of embodiments of the present application to enable those skilled in the art to understand or practice the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (5)

1. An LED display substrate, characterized in that:
the LED display substrate is provided with a plurality of types of lamp beads with different luminous colors, and each type of lamp bead is divided into at least one lamp bead subclass based on the center wavelength of the lamp bead;
each type of the lamp beads is periodically arranged in at least one set direction according to the corresponding lamp bead subclass;
Each type of the lamp beads corresponds to one luminous color respectively;
The lamp beads are periodically arranged in at least one set direction according to the corresponding lamp bead types;
the plurality of lamp beads form a lamp bead combination, and the lamp bead combination comprises lamp beads of all lamp bead subclasses of all lamp bead types;
The lamp bead combinations are arranged on the LED display substrate periodically;
Each type of the lamp beads in the lamp bead combination is periodically arranged in at least one set direction according to the corresponding lamp bead subclass;
The lamp beads of the same lamp bead type but different lamp bead subclasses in the lamp bead combination are periodically arranged in at least one set direction.
2. The LED display substrate of claim 1, wherein:
All the lamp beads are configured to be uniformly distributed on the LED display substrate according to the respective corresponding lamp bead types and the corresponding lamp bead types.
3. The LED display substrate of claim 1, wherein:
the lamp beads of different lamp bead types in the lamp bead combination are periodically arranged in at least one set direction.
4. The LED display substrate of claim 1, wherein:
when the lamp beads corresponding to the lamp bead types with at least 2 lamp bead sub-types are arranged on the LED display substrate, the lamp bead sub-types of the adjacent lamp beads of the same type are different.
5. The manufacturing method of the LED display substrate is characterized by comprising the following steps of:
Dividing all the lamp beads into different lamp bead types according to the luminous color;
Dividing each type of lamp beads into at least one lamp bead subclass based on the central wavelength of the lamp beads;
according to the requirements, periodically arranging each type of lamp beads on an LED display substrate according to the corresponding lamp bead subclasses in at least one set direction; wherein,
Each type of the lamp beads corresponds to one luminous color respectively;
The lamp beads are periodically arranged in at least one set direction according to the corresponding lamp bead types;
the plurality of lamp beads form a lamp bead combination, and the lamp bead combination comprises lamp beads of all lamp bead subclasses of all lamp bead types;
The lamp bead combinations are arranged on the LED display substrate periodically;
Each type of the lamp beads in the lamp bead combination is periodically arranged in at least one set direction according to the corresponding lamp bead subclass;
The lamp beads of the same lamp bead type but different lamp bead subclasses in the lamp bead combination are periodically arranged in at least one set direction.
CN202110905912.3A 2021-08-06 2021-08-06 LED display substrate and manufacturing method thereof Active CN113745206B (en)

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