Display method for realizing ultra-wide color gamut and high-uniformity color by using Micro-LED

Abstract

The invention also provides a display method for realizing ultra-wide color gamut and high-uniformity color by using the Micro-LED, and each display pixel contains one or more Micro LED chip combinations, so that light with not only red, green and blue wavelengths, but also cyan and emerald green light or light with more color wavelengths or a mixture of the color light can be generated. According to the color presented by the display pixels, ultra-wide color gamut and high-uniformity color display is realized by controlling the combination of the current and the light emitting time of each Micro LED chip with different light emitting wavelengths through a special algorithm. The ultra-wide color gamut display means that the display effect that display colors cover more than 80% of the visual color gamut range of human eyes. According to the high-uniformity color, the problem that in a traditional red-green-blue three-primary-color method, due to the fact that the chip light-emitting wavelengths are inconsistent in different pixels, the colors presented in different pixels are inconsistent is solved in the mode that multiple sets of mixed light-emitting combined colors of MicroLED chips with multiple light-emitting wavelengths in each pixel is used for solving the problem that in a traditional red-green-blue three-primary-color method, the light-emitting wavelengths of the chips are inconsistent in the different pixels.

Description

Technical Field

[0001] The present invention relates to the field of display technology, and in particular to a display method using Micro-LED to achieve ultra-wide color gamut and high color uniformity. Background Art

[0002] Inorganic light-emitting diodes (LEDs) are composed of compound semiconductors such as GaAs, AlGaInP / GaP, InGaN / GaN, etc. The material composition of the LED determines the wavelength of its emitted light, which can be achieved in the infrared, visible light and ultraviolet bands. In order to convert electrical energy into light energy, current flows through the LED device and carriers are injected into the PN junction. Among them, the carriers in the n-type semiconductor are electrons, and the carriers in the p-type semiconductor are holes. When electrons and holes recombine in the PN junction, energy is released in the form of electromagnetic waves and eventually manifests as light emission. AlGasAs and AlGaInP semiconductor materials are commonly used for red and yellow LEDs, while GaN-based semiconductors are used for green, blue and ultraviolet LEDs. The structure of a classic nitride LED contains an active region of one or more InGaN quantum wells, sandwiched between thicker n-type GaN and p-type GaN. By increasing the In / Ga ratio in the InGaN quantum well, the InGa1-xN semiconductor can emit electromagnetic waves in the band from 365nm to 1771nm. However, at wavelengths longer than 480nm, the material quality of MOCVD-grown InGa1-xN continues to decline, resulting in lower efficiency of green LEDs compared to blue and red LEDs.

[0003] Micro-LED refers to the micron-pitch LED formed by miniaturizing the traditional millimeter-sized LED to achieve an ultra-high density pixel array. As a new generation of active light-emitting display technology, Micro-LED display has the advantages of high luminous efficiency, potential low power consumption, flexibility, high transparency, integration, interaction, high stability, and all-weather operation compared to existing mainstream display technologies (LCD, OLED, etc.). It is considered to be a display technology with full functions and full application fields. Due to its small size, high flexibility, and easy disassembly and merging, Micro-LED can be deployed in any existing display application from the smallest to the largest size, and in many cases it will have a more unique effect than LCD and OLED. Micro-LED display can cover almost all existing display applications and future interactive spatial light field displays, but the technology also faces the current situation of low yield, high cost, poor mass production and high power consumption of the whole machine. The specific challenges are reflected in the decrease in luminous efficiency when the LED chip size reaches the micron level, especially the low efficiency of red Micro-LED, high-speed and mass transfer of Micro-LED chips, metal bonding of Micro-LED chips to driver chips or backplanes, full-color display, high light extraction efficiency and high contrast, low-power driving technology, detection and repair, and seamless splicing technology for large-size display screens.

[0004] An important indicator of modern displays is to achieve a wider color gamut. Whether reproducing real scenes in nature or generating scenes through computers, we hope that our information display terminals can achieve all colors visible to human vision and enhance the visual experience. Existing mainstream displays are based on the three primary colors of red, green and blue. To achieve ITU-R BT.2020, very pure red, green and blue light sources (such as lasers) must be used, which can only reach 65% of our human visual color range. Pixels composed of multiple primary colors such as red, green, blue, cyan, emerald green, etc. can achieve a display of more than 85% of the human visual color range. The color gamut comparison chart of the two schemes is shown below. Figure 1 In addition to providing a large color gamut, multi-primary displays can also more flexibly correct for differences in color vision among different observers.

[0005] The current mainstream LCD or OLED displays distribute the effective luminous area of ​​display pixels to the three primary colors of red, green and blue to achieve the brightness of different colors required for display. If sub-pixels with multiple primary colors are used, the effective luminous area of ​​different colors will inevitably be reduced, reducing the color brightness. The light source area of ​​Micro LED is much smaller than the pixel size, so the use of multi-primary color (more than red, green and blue) Micro LED light source will not affect the brightness of pixel colors. Therefore, micro LED is the best choice for achieving full-color display.

[0006] The three primary colors of active light-emitting display OLED are realized by large-area coating, so the color consistency of each pixel is determined by the consistency of the coating process of the whole surface, and the color consistency is good. The light source of Micro LED is transferred and bonded by a large amount of micron-sized LED particles to the driving substrate. It is difficult to achieve complete consistency of the light spectrum of each MicroLED chip during the LED epitaxy and chip preparation process. In order to achieve color consistency, MicroLED chips with the same monochromatic spectrum must be screened out, which is bound to waste a large part of MicroLED chips. The yield from epitaxy to chip is very low, and the waste is very large. By mixing multiple monochromatic MicroLED chips in pixels, most chips with similar light emission spectra can be used, which can solve the problem of poor color consistency and unevenness in different pixels of traditional red, green and blue three-primary color LED displays. Although the number of MicroLED chips in each pixel has been increased, the overall chip cost of the MicroLED display will not increase, but will decrease due to the significant increase in the utilization rate of available chips on the epitaxial wafer. Therefore, multi-primary color MicroLED display can not only improve the color gamut and display uniformity, but also effectively reduce costs by improving the utilization rate of MicroLED chips. Summary of the invention

[0007] In view of this, an object of the present invention is to provide a display method using Micro-LED to achieve ultra-wide color gamut and high color uniformity.

[0008] To achieve the above objectives, the present invention adopts the following technical solutions: a display method using Micro-LED to achieve ultra-wide color gamut and high uniformity color, wherein each display pixel contains a combination of one or more Micro LED chips, so that it can produce not only red, green, and blue wavelengths of light but also cyan and emerald green light or more wavelengths of light; the color presented by the display pixel is achieved by controlling the combination of current and light-emitting time of each MicroLED chip with different light-emitting wavelengths through a special algorithm to achieve ultra-wide color gamut and high uniformity color display.

[0009] In a preferred embodiment, the peak value of the red light emission wavelength is 610-660nm, the peak value of the green light emission wavelength is 525-550nm, the peak value of the blue light emission wavelength is 450-475nm, the peak value of the cyan light emission wavelength is 480-500nm, and the peak value of the emerald green light emission wavelength is 500-525nm; the MicroLED chip realizes one or more of the above-mentioned wavelengths of light emission.

[0010] In a preferred embodiment, the color presented by the display pixel is achieved by controlling the combination of current intensity and luminous time of each Micro LED chip with different luminous wavelengths through an algorithm to achieve ultra-wide color gamut display. Specifically, the color and brightness requirements of each pixel are achieved by controlling the combination of brightness of the Micro LED chips of various luminous wavelengths in each pixel. According to the luminous spectrum characteristics of MicroLEDs of different colors, the color display of the pixel is achieved through a special isochromatic algorithm and a corresponding driving scheme. The ultra-wide color gamut display refers to a display effect in which the display color covers more than 80% of the human eye's visual color gamut range.

[0011] In a preferred embodiment, the color gamut is divided into multiple triangular areas, and the color of the triangular area is realized by the combination of light emission of three different monochromatic wavelength MicroLED chips in the pixel; or the color of the triangular area is realized by the combination of light emission of multiple different monochromatic wavelength MicroLED chips; or the color of the triangular area is composed of three different colors formed by mixing a monochromatic MicroLED color with multiple monochromatic colors.

[0012] In a preferred embodiment, the method of dividing the color gamut into multiple triangular areas includes taking the color coordinates corresponding to the MicroLED chip with the highest luminous efficiency as the priority origin and forming triangular areas with the color coordinates of other high-efficiency chips to cover the entire display color gamut to achieve the highest luminous efficiency of the display.

[0013] In a preferred embodiment, the method of dividing the color gamut into multiple triangular areas includes dividing the entire color gamut into triangular areas with the color coordinates of colors that are healthy for the human eye as the origin to prioritize so as to achieve a display that is healthier for the human eye.

[0014] In a preferred embodiment, the red MicroLED chip has the largest light-emitting area, the green MicroLED chip has the second largest light-emitting area, and the blue MicroLED chip has the smallest light-emitting area.

[0015] In a preferred embodiment, each display pixel contains one or more Micro LED chip combinations, so that it can produce not only red, green, and blue wavelengths of light but also cyan and emerald green light or more wavelengths of light, or a mixture of these colors of light; this mixture is the arrangement of chips of different colors in the pixel plane to form an ultra-wide color gamut and high uniformity of color, or the vertical superposition within the display pixel to form an ultra-wide color gamut and high uniformity of color, or a single or multiple Micro LED chips driven by different currents or voltages to achieve ultra-wide color gamut and high uniformity of color, or a mixed combination of the above forms.

[0016] The present invention also provides a display method using Micro-LED to achieve ultra-wide color gamut and high uniformity of color, wherein each display pixel contains one or more Micro LED chip combinations, so that it can produce not only red, green, and blue wavelengths of light but also cyan and emerald green light or more wavelengths of light, or a mixture of these colors of light; this mixture is achieved by combining blue or ultraviolet MicroLED chips with quantum dots, phosphors or other fluorescent materials of various colors to form a light source of various colors, and ultimately achieves ultra-wide color gamut and high uniformity of color display through mixing within the pixel plane or in the vertical direction.

[0017] The present invention also provides a method for realizing ultra-wide color gamut and high uniformity color display using Micro-LED, and generates ultra-wide color gamut display according to the content of video and image through the algorithm of artificial intelligence content generation AIGC.

[0018] Compared with the prior art, the present invention has the following beneficial effects: BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Schematic diagram of the color gamut coverage of five primary colors and three primary colors.

[0020] Figure 2 Schematic diagram of color gamut division according to the first embodiment of the present invention.

[0021] Figure 3 It is a schematic diagram of the color gamut coverage of the three primary colors before and after the blue light wavelength shift according to the second embodiment of the present invention.

[0022] Figure 4 It is a schematic diagram of the principle of compensating the color gamut range through cyan according to the second embodiment of the present invention.

[0023] Figure 5 It is a data schematic diagram of the color gamut coverage before and after cyan compensation according to the second embodiment of the present invention.

[0024] Figure 6 It is a schematic diagram of the yield of blue light MicroLED produced under the standard process of the second embodiment of the present invention.

[0025] Figure 7 This is a schematic diagram of the yield of blue light MicroLED produced by the improved process based on the color gamut compensation principle according to the second embodiment of the present invention.

[0026] Figure 8 It is a flowchart of the third embodiment of the present invention. DETAILED DESCRIPTION

[0028] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0029] It should be noted that the following detailed descriptions are illustrative and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.

[0030] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application; as used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or their combinations.

[0031] refer to Figure 1-8 The object of the present invention is to provide a full-color display with high color uniformity composed of a whole array of MicroLED chips with multiple colors. The display device has a color gamut greater than 80% of the color range visible to the human eye. At the same time, a special color combination algorithm is used to solve the problem of consistency of color of MicroLED display pixels, and the utilization rate of MicroLED chips is improved to reduce costs. The mixed light emission of multiple different single-color MicroLEDs is realized by a special isochromatic algorithm and corresponding drive to realize the color of the pixel. In order to achieve a one-to-one correspondence between the color and the combination of single-color light-emitting chips, the color gamut needs to be divided into multiple triangular areas. The color of each triangular area can be realized by a combination of light emission of three different single-color MicroLED chips among multiple single-color MicroLED chips; the color of the triangular area can also be composed of three different mixed colors formed by mixing multiple single-color MicroLED chips. The color of the triangular area can also be composed of three different colors of the color formed by mixing a single-color MicroLED color with multiple single colors.

[0032] Each display pixel contains one or more Micro LED chip combinations, which can produce not only red, green, and blue wavelengths of light, but also cyan and emerald green light or more wavelengths of light, or a mixture of these colors. The color presented by the display pixel is achieved by controlling the combination of current and light-emitting time of each Micro LED chip with different light-emitting wavelengths through a special algorithm to achieve ultra-wide color gamut and high uniformity color display. This method enables the MicroLED display device to have a color gamut greater than 80% of the color range visible to the human eye. At the same time, the special color combination algorithm solves the problem of color consistency of MicroLED display pixels, and improves the utilization rate of MicroLED chips to reduce costs.

[0033] To achieve the above purpose, it is characterized in that the peak value of the red light emission wavelength is 610-660nm, the peak value of the green light emission wavelength is 525-550nm, the peak value of the blue light emission wavelength is 450-475nm, the peak value of the cyan light emission wavelength is 480-500nm, and the peak value of the emerald green light emission wavelength is 500-525nm; the MicroLED chip can realize one or more of the above wavelengths of light emission; the color presented by the display pixel is achieved by controlling the combination of the current intensity and light emission time of each MicroLED chip with different light emission wavelengths through a special algorithm to achieve ultra-wide color gamut display, specifically, by controlling the combination of the brightness of the MicroLED chips of various light emission wavelengths in each pixel to achieve the color and brightness requirements of each pixel, according to the light emission spectrum characteristics of MicroLEDs of different colors, through a special isochromatic algorithm and a corresponding driving scheme to achieve the color display of the pixel. The ultra-wide color gamut display refers to the display effect that the display color covers more than 80% of the human eye visual color gamut range. The high-uniformity color eliminates the problem of inconsistent colors presented in different pixels in the traditional red, green and blue primary color method due to the inconsistency of chip emission wavelengths in different pixels by combining multiple groups of mixed light emission colors of MicroLED chips with multiple emission wavelengths in each pixel.

[0034] The aforementioned one kind of MicroLED chip array using multiple emission wavelengths and their emission combinations realizes the color display of pixels through a special metamerism algorithm and a corresponding driving scheme according to the emission spectrum characteristics of MicroLEDs of different colors, characterized in that the color gamut is divided into multiple triangular areas, and the color of the triangular area can be realized by the emission combination of three different monochromatic wavelength MicroLED chips in the pixel; the color of the triangular area can also be realized by the emission combination of multiple different monochromatic wavelength MicroLED chips. The color of the triangular area can also be composed of three different colors formed by mixing a monochromatic MicroLED color with multiple monochromatic colors.

[0035] One of the methods of dividing the color gamut into multiple triangular areas is to use the color coordinates corresponding to the MicroLED chip with the highest luminous efficiency as the priority origin and form triangular areas with the color coordinates of other high-efficiency chips to cover the entire display color gamut to achieve the highest luminous efficiency of the display.

[0036] One of the methods for dividing the color gamut into a plurality of triangular regions is to divide the entire color gamut into triangular regions with the color coordinates of the colors that are healthy for the human eye as the priority origin to achieve a display that is healthier for the human eye.

[0037] The method for realizing ultra-wide color gamut and high uniformity color display using a MicroLED chip array with multiple luminous wavelengths and their luminous combination algorithm is characterized in that the sizes of the MicroLED chips of different colors can be inconsistent, the chips with high efficiency can be of relatively smaller size, and the current density with the best luminous efficiency is used to drive the MicroLED chips of different colors to achieve the highest light efficiency of the display screen. Specifically, the red MicroLED chip with the largest luminous area is selected, the green MicroLED chip with the second largest luminous area, and the blue MicroLED chip with the smallest luminous area.

[0038] The method for realizing ultra-wide color gamut and high uniformity color display using a MicroLED chip array with multiple emission wavelengths and their emission combination algorithm is characterized in that each display pixel contains one or more MicroLED chip combinations, so that it can produce not only red, green, and blue wavelengths of light but also cyan and emerald green light or more wavelengths of light, or a mixture of these colors of light. This mixture can be the arrangement of chips of different colors in the pixel plane to form ultra-wide color gamut and high uniformity color, or vertical superposition in the display pixel to form ultra-wide color gamut and high uniformity color, or a single or multiple MicroLED chips driven by different currents or voltages to achieve ultra-wide color gamut and high uniformity color, or a combination of the above various forms.

[0039] A method for realizing ultra-wide color gamut and high uniformity color display using a MicroLED chip array with multiple luminous wavelengths and their luminous combination algorithm, characterized in that each display pixel contains one or more MicroLED chip combinations, so that it can produce not only red, green, and blue wavelengths of light but also cyan and emerald green light or more wavelengths of light, or a mixture of these colors of light. This mixture can be formed by combining a blue or ultraviolet MicroLED chip with a plurality of colors of quantum dots, phosphors or other fluorescent materials to form a light source of multiple colors, and finally realizes ultra-wide color gamut and high uniformity color display through mixing in the pixel plane or in the vertical direction.

[0040] A method for realizing ultra-wide color gamut and high uniformity color display using a MicroLED chip array with multiple emission wavelengths and their emission combination algorithm, characterized in that an ultra-wide color gamut display is generated according to the content of videos and images through an artificial intelligence generated content (AIGC) algorithm. Specifically, when the camera obtains the digital signal of the shooting background, the color signal is expanded from RGB to multi-primary color display through AI algorithm processing.

[0041] The color combination algorithm based on multi-primary color display includes the following steps: (1) Obtain the color coordinates and brightness data x, y, Y of the target color A.

[0042] (2) Calculating the tristimulus values ​​of the target color based on the conversion relationship between the color coordinates and the color tristimulus values, specifically including: X=x*(Y / y); Y=Y; Z=(1-xy)*(Y / y); Among them, X, Y, and Z represent the three stimulus values ​​of the target color.

[0043] (3) Input the color coordinates W (xw, yw, zw) of the white balance point.

[0044] (4) Set the cyan mixing ratio CMR and the emerald mixing ratio EMR.

[0045] (5) Import the color coordinates R (xr, yr, zr) of the red light LED, the color coordinates G (xg, yg, zg) of the green light LED, the color coordinates B (xb, yb, zb) of the blue light LED, the color coordinates C (xc, yc, zc) of the cyan LED and their three stimulus values ​​(XC, YC, ZC), and the color coordinates E (xe, ye, ze) of the emerald green LED and their three stimulus values ​​(XE, YE, ZE) of the multi-primary color display.

[0046] (6) Taking W as the white balance point, solve the color conversion matrix of the three primary colors R, G, and B, specifically including: h=[xr,yr,zr;xg,yg,zg;xb,yb,zb]; p=inv(h)'*[xw;yw;zw]; T=[p(1,1),0,0;0,p(2,1),0;0,0,p(3,1)]; pMat=h'*T; Among them, inv(h) is the inverse matrix of matrix h, h' is the transposed matrix of h, and pMat is the color conversion matrix of the three primary colors R, G, and B solved with W as the white balance point.

[0047] (7) Obtaining the normalized matrix D of C according to the R, G, B three-primary color conversion matrix pMat, specifically including: CRGB=pMat\[XC;YC;ZC]; CR=CRGB(1,1); CG=CRGB(2,1); CB=CRGB(3,1); D=[CR,0,0;0,CG,0;0,0,CB]; Among them, CRGB is the linear RGB component obtained by C based on the R, G, B three-primary color conversion matrix.

[0048] (8) Taking E as the temporary target color, the linear RGBC components of E are obtained by solving the normalized matrix D of C, which specifically includes: ERGB=pMat\[XE;YE;ZE]; ERnGnBn=D\RGB; C1=CMR*min(RnGnBn(RnGnBn>0)); ERnGnBn1=ERnGnBn-C1; ERGB1=D*ERnGnBn1; ERGBC1=[ERGB1(1,1);ERGB1(2,1);ERGB1(3,1);C1]; Among them, ERGB is the linear RGB component obtained by E based on the R, G, B three-primary color conversion matrix, ERnGnBn is the temporary linear RGB component obtained by E through the normalization matrix D, C1 is the cyan component of E obtained by the set CMR value, ERGB1 is the RGB component of E after subtracting the cyan component, and ERGBC1 is the four-primary color component matrix of E.

[0049] (9) Solving the normalized matrix D of C to obtain the linear RGBC components of the target color A includes: ARGB=pMat\[X;Y;Z]; ARnGnBn1=D\ARGB; C2=CMR*min(ARnGnBn1(ARnGnBn1>0)); ARnGnBn2=ARnGnBn1-C2; ARGB2=D*RnGnBn3; ARGBC2=[ARGB2(1,1);ARGB2(2,1);ARGB2(3,1);C2]; Among them, ARGB is the linear RGB component obtained by A based on the R, G, B three-primary color conversion matrix, ARnGnBn1 is the temporary linear RGB component obtained by A through the normalization matrix D, C2 is the cyan component of A obtained by the set CMR value, ARGB2 is the RGB component of E obtained after subtracting the cyan component, and ARGBC2 is the four-primary color component matrix of A.

[0050] (10) Based on the RGBC components of E, the normalized matrix D1=diag(RGBC1) of E is calculated.

[0051] (11) According to the RGBC components of A and E obtained in the above steps, the components of the target color A are converted from four primary colors to five primary colors through the normalization matrix of E and a scaling matrix S is obtained, which specifically includes: RnGnBnCn=D1\ARGBC2; posRnGnBnCn=RnGnBnCn(RnGnBnCn>0); E1=EMR*min(posRnGnBnCn); RnGnBnCn1=RnGnBnCn-E1; SRGBC=D1*RnGnBnCn1; S=[SRGBC(1,1);SRGBC(2,1);SRGBC(3,1);SRGBC(4,1);E1]; Among them, RnGnBnCn is the temporary RGBC component obtained by the four primary color component matrix of A through the normalized matrix of E, E1 is the emerald color component of the scaling matrix obtained by RnGnBnCn according to the emerald color mixing ratio EMR, and SRGBC is the RGBC component of the scaling matrix obtained after subtracting the emerald color component.

[0052] (12) Through pMat and S, the five-primary color conversion matrix pMat1 is obtained by scaling the matrix, which specifically includes: pMat1=[pMat(1,1)*S(1,1),pMat(1,2)*S(2,1),pMat(1,3)*S(3,1),XC*S(4,1),XE*E; pMat(2,1)*S(1,1),pMat(2,2)*S(2,1),pMat(2,3)*S(3,1),XC*S(4,1),XE*E; pMat(3,1)*S(1,1),pMat(3,2)*S(2,1),pMat(3,3)*S(3,1),XC*S(4,1),XE*E;]; (13) Based on the specific algorithm requirements, set constraint 1 and constraint 2.

[0053] (14) According to the input target color A, combined with constraints 1 and 2 and the five-primary color conversion matrix, the corresponding linear RGBCE components are obtained, specifically including: [pMat1;Constraint 1;Constraint 2]=[XYZ;0;0]; It contains five conditions and five unknowns, and after calculation, the RGBCE components of the target color are obtained.

[0054] Example 1-Prioritize high-efficiency chips to achieve the lowest power consumption of the display (1) Figure 2 As shown, within the human visual color gamut coverage range 1, single-value wavelengths of 630nm red coordinate 2, 532nm green coordinate 3, 467nm blue coordinate 4, 492nm cyan coordinate 5, and 510nm emerald coordinate 6 are selected as the primary color MicroLED.

[0055] (2) Starting from the blue coordinate 4 as the vertex, connect each color coordinate vertex in sequence to divide the pentagon 23456 into triangles 456, 463, and 432.

[0056] (3) Based on the color combination algorithm of the multi-primary color display of the example, when the calculated mixed color is within the range of triangle 456, the constraints G=0 and R=0 are imposed. When the calculated mixed color is within the range of triangle 463, the constraints C=0 and R=0 are imposed. When the calculated mixed color is within the range of triangle 463, the constraints C=0 and R=0 are imposed. Finally, according to the imposed constraints, the specific components of each color coordinate are calculated. Assuming that the color coordinates xyY (0.08, 0.3, 0.1) of the target color are within the range of triangle 456, the tristimulus values ​​XYZ are (0.0267, 0.1, 0.2067), the specific calculation formula is as follows: 0.7427R+0.0729G+0.114B+0.0182C+0.0026E=0.0267; 0.3063R+0.3419G+0.0399B+0.1713C+0.1405E=0.1; 0.0000578R+0.0142G+0.7161B+0.3145C+0.0442E=0.2067; R=0; G=0; The RGBCE linear components of the target color obtained after calculation are as follows: R=0; G=0; B=0.2023; C=0.1262; E=0.5003.

[0057] (4) According to the calculation method of the RGBCE linear component of the mixed color mentioned in (3), combined with the power consumed by the unit component of the multi-primary color native MicroLED, the energy consumption ratio of mixing any color can be obtained after calculation. By summing all points within the five-primary color gamut, the total energy consumption ratio with the native blue MicroLED as the dividing point can be obtained. The specific calculation is as follows: =1367; Among them, n1 is the total energy consumption ratio within the color gamut when the native blue MicroLED is used as the dividing point. Pr, Pg, Pb, Pc, and Pe are the energy consumption per unit component of red, green, blue, cyan, and emerald, respectively.

[0058] (5) According to the calculation method mentioned in (4), the total energy consumption ratio with native red MicroLED as the dividing point is calculated as follows: =1706; Among them, n2 is the total energy consumption ratio within the color gamut when using native red MicroLED as the dividing point.

[0059] (6) Comparing the energy consumption ratio difference between n1 and n2, it can be found that the overall energy consumption ratio has decreased by about 19.87%. The specific calculation is as follows: q=(n2-n1) / n2=19.87%; Among them, q is the ratio of energy consumption that can be reduced by adopting the blue solution relative to the red solution.

[0060] Example 2 - Improving chip utilization and color range (1) Figure 3 As shown, within the human visual color gamut coverage, a red coordinate 2 with a single-value wavelength of 630nm, a green coordinate 3 with a wavelength of 532nm, a blue coordinate 4 with a wavelength of 467nm, and an offset blue coordinate 8 obtained when the wavelength is offset by 6nm during the preparation of the blue light Micro-LED are selected.

[0061] (2) The standard color gamut triangle 423 is constructed with the blue coordinate 4, the red coordinate 2, and the green coordinate 3, and the offset color gamut triangle 823 is constructed with the blue coordinate 8, the red coordinate 2, and the green coordinate 3. The intersection point of the straight lines 38 and 24 is 9.

[0062] (3) Triangle 349 is the color gamut loss caused by the wavelength shift of the blue light MicroLED. After calculation, the area loss ratio H1=S 349 / S 423 =2.1% (4) Figure 4 As shown, a cyan MicroLED with a light-emitting wavelength of 492nm is introduced to construct a four-primary color gamut range of 2385. At this time, the color gamut area loss caused by the blue light wavelength deviation is reduced after compensation by the cyan MicroLED, and the overlap rate with the standard color gamut range reaches 97.9791%.

[0063] (5) Figure 5As shown, the compensation for the color gamut range offset after the introduction of cyan LED under different wavelength offsets is calculated, where H1 represents the overlap ratio of the color gamut range after wavelength offset, and H2 represents the overlap ratio of the color gamut range after compensation by cyan MicroLED.

[0064] (6) According to the calculation results in (5), when the wavelength of the blue light MicroLED shifts toward the short wavelength direction, the color gamut range can be compensated by the cyan MicroLED. When the blue light MicroLED shifts toward the long wavelength direction, the color gamut range cannot be compensated by the MicroLED.

[0065] (7) Figure 6 As shown in the figure, 10 is the available blue light MicroLED produced. When the target wavelength of blue light MicroLED chip is determined, the production is carried out based on this wavelength. At this time, the chips that meet the required range of blue light MicroLED wavelength only account for about 30% of the total production. Figure 7 As shown, 11 is a blue light MicroLED that can be used after compensation by cyan MicroLED. When the blue light MicroLED is prepared with a requirement lower than the target wavelength, the wavelength range of the chips produced at this time is lower than the standard wavelength, and the color gamut range can be compensated by cyan MicroLED, achieving 100% chip utilization.

[0066] Example 3- Realization of the camera end to the ultra-wide color gamut display end based on RGB three primary colors like Figure 8 As shown in the figure, the process from the camera end to the display end is as follows: (1) Camera acquisition: The RGB-based camera converts images into digital electrical signals through optical sensors, which are processed and optimized by an image signal processor (ISP) to obtain processed video signals.

[0067] (2) Video Coding: The processed video signal is relatively large. In order to reduce the loss during transmission, compression coding is required, but a high video quality must still be maintained.

[0068] (3) Data transmission: The encoded files are transmitted through different interfaces and protocols, and adjusted according to bandwidth, delay and stability factors to ensure the accuracy of transmission.

[0069] (4) Video decoding: After receiving the encoded video data, the receiving end needs to decode it to restore it to the original video signal. The video signal is decoded according to the decoding standard.

[0070] (5) AI color signal generation: The RGB-based video code is converted into a multi-primary color display signal through AIGC technology to expand the video content.

[0071] (6) Video ultra-wide color gamut display: The AIGC-optimized signal is displayed on a multi-primary color MicroLED display to achieve ultra-wide color gamut display.

[0072] The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention in other forms. Any technician familiar with the profession may use the above disclosed technical content to change or modify it into an equivalent embodiment with equivalent changes. However, any simple modification, equivalent change and modification made to the above embodiment according to the technical essence of the present invention without departing from the technical solution of the present invention still belongs to the protection scope of the technical solution of the present invention. Various modifications and improvements are part of the present invention without departing from the main purpose and scope of the present invention. Therefore, the present invention is intended to cover all changes, modifications and changes within the scope of the claims of the present invention.

Claims

1. A method for realizing ultra-wide color gamut and high color uniformity using Micro-LED, characterized in that: Each display pixel contains one or more Micro LED chip combinations, which can produce not only red, green, and blue wavelengths of light, but also cyan and emerald green light or more wavelengths of light; the color presented by the display pixel is achieved by controlling the combination of current and light-emitting time of each Micro LED chip with different light-emitting wavelengths through a special algorithm to achieve ultra-wide color gamut and high uniformity color display.

2. The method for realizing ultra-wide color gamut and high color uniformity using Micro-LED according to claim 1, characterized in that: The peak value of the red light emission wavelength is 610-660nm, the peak value of the green light emission wavelength is 525-550nm, the peak value of the blue light emission wavelength is 450-475nm, the peak value of the cyan light emission wavelength is 480-500nm, and the peak value of the emerald green light emission wavelength is 500-525nm; the MicroLED chip realizes one or more of the above-mentioned wavelengths of emission.

3. The method for realizing ultra-wide color gamut and high color uniformity using Micro-LED according to claim 2, characterized in that: The color presented by the display pixel is achieved by controlling the combination of current intensity and luminous time of each Micro LED chip with different luminous wavelengths through an algorithm to achieve ultra-wide color gamut display. Specifically, the color and brightness requirements of each pixel are achieved by controlling the combination of brightness of the Micro LED chips of various luminous wavelengths in each pixel. According to the luminous spectrum characteristics of MicroLEDs of different colors, the color display of the pixel is achieved through a special isochromatic algorithm and a corresponding driving scheme. The ultra-wide color gamut display refers to a display effect in which the display color covers more than 80% of the visual color gamut range of the human eye.

4. The method for realizing ultra-wide color gamut and high color uniformity using Micro-LED according to claim 3, characterized in that: The color gamut is divided into multiple triangular areas, and the color of the triangular area is realized by the combination of light emission of three MicroLED chips with different monochromatic wavelengths within the pixel; or the color of the triangular area is realized by the combination of light emission of multiple MicroLED chips with different monochromatic wavelengths; or the color of the triangular area is composed of three different colors formed by a monochromatic MicroLED color and a mixture of multiple monochromatic colors.

5. The method for realizing ultra-wide color gamut and high color uniformity using Micro-LED according to claim 4, characterized in that: The method of dividing the color gamut into multiple triangular areas includes taking the color coordinates corresponding to the MicroLED chip with the highest luminous efficiency as the priority origin and forming triangular areas with the color coordinates of other high-efficiency chips to cover the entire display color gamut to achieve the highest luminous efficiency of the display.

6. The method for realizing ultra-wide color gamut and high color uniformity using Micro-LED according to claim 4, characterized in that: The method of dividing the color gamut into multiple triangular areas includes dividing the entire color gamut into triangular areas with the color coordinates of colors that are healthy for the human eye as the origin to prioritize so as to achieve a display that is healthier for the human eye.

7. The method for realizing ultra-wide color gamut and high color uniformity using Micro-LED according to claim 1, characterized in that: The red MicroLED chip has the largest light-emitting area, the green MicroLED chip has the second largest light-emitting area, and the blue MicroLED chip has the smallest light-emitting area.

8. The method for realizing ultra-wide color gamut and high color uniformity using Micro-LED according to claim 1, characterized in that: Each display pixel contains one or more Micro LED chip combinations, which can produce not only red, green, and blue wavelengths of light, but also cyan and emerald green light or more wavelengths of light, or a mixture of these colors of light; this mixture is the arrangement of chips of different colors in the pixel plane to form an ultra-wide color gamut and high uniformity of color, or the vertical superposition within the display pixel to form an ultra-wide color gamut and high uniformity of color, or a single or multiple Micro LED chips driven by different currents or voltages to achieve ultra-wide color gamut and high uniformity of color, or a mixed combination of the above forms.

9. A method for realizing ultra-wide color gamut and high color uniformity using Micro-LED, based on the method for realizing ultra-wide color gamut and high color uniformity using Micro-LED as claimed in any one of claims 1 to 8, characterized in that: Each display pixel contains one or more Micro LED chip combinations, which can produce not only red, green, and blue wavelengths of light, but also cyan and emerald green light or more wavelengths of light, or a mixture of these colors of light; this mixture is achieved by combining blue or ultraviolet Micro LED chips with quantum dots, phosphors or other fluorescent materials of various colors to form a light source of various colors, and ultimately achieves ultra-wide color gamut and high uniformity color display through mixing within the pixel plane or in the vertical direction.

10. A method for realizing ultra-wide color gamut and high color uniformity using Micro-LED, based on the method for realizing ultra-wide color gamut and high color uniformity using Micro-LED as claimed in any one of claims 1 to 8, characterized in that: Generate content through artificial intelligence AIGC's algorithm generates ultra-wide color gamut displays based on video and image content.

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