CN112289781B - LED display screen 3D image realization method and quantum dot LED display screen thereof - Google Patents
LED display screen 3D image realization method and quantum dot LED display screen thereof Download PDFInfo
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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
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
- G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
- G02B30/26—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type
- G02B30/33—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type involving directional light or back-light sources
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- 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
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- H01L33/00—Semiconductor devices with at least one potential-jump barrier or surface barrier 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 with at least one potential-jump barrier or surface barrier 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
- H01L33/483—Containers
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- H—ELECTRICITY
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- H01L33/00—Semiconductor devices with at least one potential-jump barrier or surface barrier 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 with at least one potential-jump barrier or surface barrier 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
- H01L33/50—Wavelength conversion elements
- H01L33/505—Wavelength conversion elements characterised by the shape, e.g. plate or foil
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices with at least one potential-jump barrier or surface barrier 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 with at least one potential-jump barrier or surface barrier 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
- H01L33/50—Wavelength conversion elements
- H01L33/508—Wavelength conversion elements having a non-uniform spatial arrangement or non-uniform concentration, e.g. patterned wavelength conversion layer, wavelength conversion layer with a concentration gradient of the wavelength conversion material
Abstract
The invention discloses a method for realizing a 3D image of an LED display screen and a quantum dot LED display screen thereof, wherein the method comprises the following steps: manufacturing uniformly arranged bonding pads on a PCB (printed Circuit Board), and installing LED lamp beads with single color on each bonding pad in a COB (chip on Board) packaging mode; four or three adjacent LED lamp beads form three colors of red, green and blue through the quantum dot film to form a pixel unit; the pixel units respectively display two groups of red, green and blue three primary colors with different wavelength bands through the quantum dot film, and the pixel units of the red, green and blue three primary colors with different wavelength bands are uniformly distributed on the PCB in a staggered manner; and transmitting the 3D image signal to a PCB (printed Circuit Board), and providing a left eye view field image and a right eye view field image by utilizing spectral glasses corresponding to different wavelength bands. And the full-color LED display screen is realized only by adopting the LED lamp beads with single color. Meanwhile, the left eye and the right eye see different images through the quantum dot film, so that a 3D image effect is formed in the brain.
Description
Technical Field
The invention relates to the technical field of LED display screens, in particular to a 3D image realization method of an LED display screen and a quantum dot LED display screen thereof.
Background
The LED display screen is an electronic display screen formed by LED lattices, the display content forms of the screen, such as characters, animations, pictures and videos, are changed in time by turning on and off red, green and blue lamp beads, the display of components is controlled by a modular structure, and the LED display screen is mainly divided into a display module, a control system and a power supply system. The display module is a screen consisting of LED lamp dot arrays and emits light; the control system realizes the conversion of the content displayed on the screen under the on-off condition in the regulation area; the power supply system converts the input voltage and current to meet the requirement of the display screen. The LED screen can realize conversion between different forms of multiple information presentation modes, can be used indoors and outdoors, and has incomparable advantages compared with other display screens. The LED lamp is developed rapidly and is widely applied to various fields by virtue of the characteristics of high brightness intensity, low work power consumption, low voltage requirement, small and exquisite equipment, convenience, long service life, impact resistance, stability and strong external interference resistance.
LED display screen is towards high density booth apart from development, its density is bigger and bigger, interval between the pixel is more and more littleer, current SMD table pastes the mode and has met the difficulty, adopt COB (chip on board) can solve LED lamp pearl can't do littleer, also can't produce the technical defect of processing LED display screen through SMD's mode, COB encapsulation is exactly with electrically conductive or non-conductive adhesive with bare lamp pearl on interconnection substrate, then carry out the lead bonding and realize its electrical connection. However, the technical difficulty of the COB packaging method adopting the red, green and blue lamp beads is that light and color separation cannot be achieved, the optical characteristics of the COB display screen are determined by the wavelength characteristics of the LED lamp beads, the difficulty of chip-level light and color separation is high, the cost is high, and the COB process also has solid crystal wavelength offset. The COB display screen manufactured in the way is poor in chroma and unsatisfactory in display effect, correction can be performed only through the control system, the wavelength is a physical characteristic, the difficulty in correcting a color gamut is high, and the effect is poor.
Meanwhile, the light-emitting wavelength range of the LED is wide, the half-peak width is large, the passive 3D formed by adopting two groups of LED lamp beads with different wavelength bands is difficult, the two groups of wavelength bands are required to be separated by a relatively wide distance, so that chromatic aberration is brought, and the image effect is not good enough. Because of the limitation of poor light splitting and color separation of the COB, the passive 3D formed by two groups of LED lamp beads with different wavelength bands cannot be realized basically.
Disclosure of Invention
The invention aims to solve the technical problems that an LED display screen 3D image realization method and a quantum dot LED display screen are provided, and the technical problems that a high-pixel LED display screen under COB packaging is difficult to realize 3D image display due to large difficulty in chip-level light splitting and color separation.
In order to solve the technical problems, the technical scheme of the invention is as follows:
the invention provides a method for realizing a 3D image of an LED display screen, which comprises the following steps:
manufacturing uniformly arranged bonding pads on a PCB (printed Circuit Board), and installing LED lamp beads with single color on each bonding pad in a COB (chip on Board) packaging mode; four or three adjacent LED lamp beads form three colors of red, green and blue through a quantum dot film to form a pixel unit;
the pixel units respectively display two groups of red, green and blue three primary colors with different wavelength bands through the quantum dot film, and the pixel units of the red, green and blue three primary colors with different wavelength bands are uniformly distributed on the PCB in a staggered manner;
and transmitting the 3D image signal to the PCB, and providing a left eye view field image and a right eye view field image by using spectral glasses corresponding to different wavelength bands.
Further, four or three adjacent LED lamp beads form three colors of red, green and blue through the quantum dot film, and the step of forming a pixel unit specifically includes:
the LED lamp beads are blue LED lamp beads, the blue light of at least one of the blue LED lamp beads in the four or three adjacent blue LED lamp beads is converted into narrow-band red light through the quantum dot film, the blue light of at least one of the blue LED lamp beads is converted into narrow-band green light, and the blue light of at least one of the blue LED lamp beads is converted into narrow-band blue light.
Further, the step of respectively displaying the red, green and blue three primary colors of two groups of different wavelength bands by the pixel unit through the quantum dot film specifically includes:
enabling each pixel unit in a first row on the PCB to be displayed as a first group of wavelength band green light quantum dots, a first group of wavelength band red light quantum dots and a first group of wavelength band blue light quantum dots through the quantum dot film;
enabling each pixel unit in a second row on the PCB to be displayed as a second group of wavelength band green light quantum dots, a second group of wavelength band red light quantum dots and a second group of wavelength band blue light quantum dots through the quantum dot film;
the pixel units with the first group of wavelength bands and the pixel units with the second group of wavelength bands are sequentially and uniformly distributed in a staggered mode.
Further, the pixel unit is composed of three LED lamp beads, and the step of displaying the red, green and blue three primary colors of two different wavelength bands by the pixel unit through the quantum dot film specifically includes:
in each pixel unit in the first row, one blue LED lamp bead is converted into a first group of wavelength band green light quantum dots, the other blue LED lamp bead is converted into a first group of wavelength band red light quantum dots, and the last blue LED lamp bead is converted into a first group of wavelength band blue light quantum dots;
in each pixel unit in the second row, one blue LED lamp bead is converted into a second group of wavelength band green light quantum dots, the other blue LED lamp bead is converted into a second group of wavelength band red light quantum dots, and the last blue LED lamp bead is converted into a second group of wavelength band blue light quantum dots.
Further, the pixel unit is composed of four LED lamp beads, and the step of displaying the red, green and blue three primary colors of two different wavelength bands by the pixel unit through the quantum dot film specifically includes:
in each pixel unit in the first row, two blue LED lamp beads on two opposite sides are converted into a first group of wavelength band red light quantum dots, the other blue LED lamp bead is converted into a first group of wavelength band red light quantum dots, and the last blue LED lamp bead is converted into a first group of wavelength band blue light quantum dots;
in each pixel unit in the second row, two blue LED lamp beads on two opposite sides are converted into a second group of wavelength band red light quantum dots, another blue LED lamp bead is converted into a second group of wavelength band red light quantum dots, and the last blue LED lamp bead is converted into a second group of wavelength band blue light quantum dots.
The invention provides a quantum dot LED display screen for realizing the method for realizing the 3D image of the LED display screen, which comprises a PCB circuit board, wherein welding pads are uniformly arranged on the PCB circuit board, and LED lamp beads with single color are arranged on each welding pad in a COB packaging mode; the LED lamp beads are characterized in that transparent protective adhesive layers are arranged on the surfaces of the LED lamp beads, and light-isolating grid layers are arranged between the transparent protective adhesive layers and separate each LED lamp bead; setting quantum dot films corresponding to the LED lamp beads on the transparent protective adhesive layer, and displaying four or three adjacent LED lamp beads as red, green and blue, red, green and blue yellow or red, green and blue green through the quantum dot films; four or three adjacent LED lamp beads are mixed and combined to form a pixel unit; the pixel units respectively display two groups of red, green and blue three primary colors with different wavelength bands through the quantum dot films, and the pixel units of the red, green and blue three primary colors with different wavelength bands are uniformly distributed on the PCB in a staggered mode.
Further, the LED lamp beads are blue LED lamp beads, the blue light of at least one of the blue LED lamp beads in the four or three adjacent blue LED lamp beads is converted into narrow-band red light through the quantum dot film, the blue light of at least one of the blue LED lamp beads is converted into narrow-band green light, and the blue light of at least one of the blue LED lamp beads is converted into narrow-band blue light.
Furthermore, the quantum dot film corresponding to each pixel unit in the first row on the PCB comprises a first group of wavelength band green light quantum dots, a first group of wavelength band red light quantum dots, and a first group of wavelength band blue light quantum dots; the quantum dot film corresponds to each pixel unit in a second row on the PCB and comprises a second group of wavelength band green light quantum dots, a second group of wavelength band red light quantum dots and a second group of wavelength band blue light quantum dots; the pixel units with the first group of wavelength bands and the light quantum dots with the second group of wavelength bands are sequentially and uniformly distributed in a staggered mode.
Furthermore, the pixel unit is composed of three LED lamp beads, the quantum dot film corresponds to each pixel unit in the first row, wherein one blue LED lamp bead is a first group of wavelength band green light quantum dots, another blue LED lamp bead is a first group of wavelength band red light quantum dots, and the last blue LED lamp bead is a first group of wavelength band blue light quantum dots; in each pixel unit corresponding to the second row of the quantum dot film, one blue LED lamp bead is a second group of wavelength band green light quantum dots, the other blue LED lamp bead is a second group of wavelength band red light quantum dots, and the last blue LED lamp bead is a second group of wavelength band blue light quantum dots.
Furthermore, the pixel unit is composed of four LED lamp beads, the quantum dot film corresponds to each pixel unit in the first row, two blue LED lamp beads on two opposite sides are a first group of wavelength band red light quantum dots, another blue LED lamp bead is a first group of wavelength band red light quantum dots, and the last blue LED lamp bead is a first group of wavelength band blue light quantum dots; in each pixel unit of the second row corresponding to the quantum dot film, two blue LED lamp beads on two opposite sides are second groups of wavelength band red light quantum dots, another blue LED lamp bead is a second group of wavelength band red light quantum dots, and the last blue LED lamp bead is a second group of wavelength band blue light quantum dots.
Further, the quantum dot film comprises a group of PET substrate layers, the quantum dot material layers are arranged between the PET substrate layers, and barrier material layers are arranged between the quantum dot material layers and the PET substrate layers on two sides respectively.
Furthermore, the PET substrate layer outside is provided with the micron structural layer of optics respectively, one of them side of PET substrate layer is in through the optical cement cover setting transparent protection glue layer surface.
Furthermore, two adjacent bonding pads on the PCB circuit board form a group, one of them is used for connecting between two adjacent bonding pads the positive pole of LED lamp pearl, another is used for connecting the negative pole of LED lamp pearl.
Furthermore, the LED lamp beads are installed on the PCB in a positive installation mode, and the PAD discs of the LED lamp beads are respectively connected with the positive pole and the negative pole of each group of the bonding PADs through a metal wire.
Further, the LED lamp beads are installed on the PCB in an inverted mode, and the PAD discs of the LED lamp beads are fixed on the positive electrode and the negative electrode of each group of bonding PADs through silver adhesive or solder paste respectively.
By adopting the technical scheme, the LED lamp beads are arranged on the bonding pads of the PCB in a COB packaging mode, each bonding pad is bound with one LED lamp bead with a certain color, four or three adjacent LED lamp beads (1 group) can form a pixel unit through a quantum dot film, and the color combination can be red, green and blue, red, green and blue yellow or red, green and blue green. Utilize quantum dot can produce the characteristic of pure color, adopt the mode of COB, only need adopt the LED lamp pearl of single colour to produce three kinds of colours of pure red green blue, realize full-color LED display screen. Meanwhile, the pixel units respectively display two groups of red, green and blue tricolor with different wavelength bands through the quantum dot film, and the pixel units of the red, green and blue tricolor with different wavelength bands are uniformly distributed on the PCB in a staggered way; and displaying the image of a left eye visual angle on the first group of LED lamp beads, and displaying the image of a right eye visual field on the second group of LED lamp beads. Meanwhile, spectral glasses with corresponding wavelength bands are manufactured, the glasses for the left eye can only pass through light with a first group of wavelengths, the glasses for the right eye can only pass through light with a second group of wavelengths, and different images can be seen by the left eye and the right eye, so that a 3D image effect is formed in the brain.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a flow chart of a 3D image implementation method of an LED display screen according to an embodiment of the present invention;
FIG. 2 is a cross-sectional structural view of a quantum dot LED display screen according to an embodiment of the present invention;
FIG. 3 is a front view structural diagram of a first quantum dot LED display screen according to an embodiment of the present invention;
FIG. 4 is a front view structural diagram of a second quantum dot LED display screen according to an embodiment of the present invention;
FIG. 5 is a front view of a PCB circuit board according to an embodiment of the present invention;
FIG. 6 is a first structure diagram of a fixing mode of LED lamp beads on a PCB of the embodiment of the invention;
FIG. 7 is a second diagram of a fixing mode of an LED lamp bead on a PCB according to an embodiment of the invention;
FIG. 8 is a cross-sectional structural view of a quantum dot film according to an embodiment of the present invention;
FIG. 9 is a diagram illustrating a color conversion state of a first quantum dot film according to an embodiment of the invention;
FIG. 10 is a diagram illustrating a color conversion state of a second quantum dot film according to an embodiment of the present invention;
FIG. 11 is a spectrogram of a first set of wavelength bands of blue LED lamp beads after passing through a quantum dot film in accordance with an embodiment of the present invention;
FIG. 12 is a spectrogram of a blue LED lamp bead of a second set of wavelength bands passing through a quantum dot film in accordance with an embodiment of the present invention;
FIG. 13 is a spectral diagram of spectral glasses according to an embodiment of the present invention;
FIG. 14 is a spectrum diagram of the light transmission wavelength bands corresponding to the left eye glasses and the right eye glasses after passing through the spectrum glasses according to the embodiment of the present invention;
FIG. 15 is a 3D image presented on a quantum dot LED display screen in accordance with an embodiment of the present invention;
FIG. 16 is an image presented by left and right eye spectral glasses in accordance with an embodiment of the present invention;
in the figure, 10-PCB circuit board, 20-LED lamp beads, 30-transparent protective glue layer, 40-light-isolating grid layer, 50-quantum dot film, 60-bonding pad, 70-metal wire and 80-silver glue; 51-PET substrate layer, 52-barrier material layer, 53-quantum dot material layer, and 54-optical micron structure layer; 531G-first set of wavelength band green light quantum dots, 531R-first set of wavelength band red light quantum dots, 531B-first set of wavelength band blue light quantum dots, 532G-second set of wavelength band green light quantum dots, 532R-second set of wavelength band red light quantum dots, 532B-second set of wavelength band blue light quantum dots.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features involved in the respective embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Example 1
As shown in fig. 1, an embodiment of the present invention provides a method for implementing a 3D image on an LED display screen, where the method includes:
s101, manufacturing uniformly arranged bonding pads on a PCB, and installing LED lamp beads with single color on each bonding pad in a COB (chip on board) packaging mode; four or three adjacent LED lamp beads form three colors of red, green and blue through a quantum dot film to form a pixel unit;
specifically, the LED lamp pearl is blue LED lamp pearl, through the quantum dot membrane will be adjacent four or three in the blue LED lamp pearl wherein at least one the blue light of blue LED lamp pearl truns to narrowband red light, wherein at least one the blue light of blue LED lamp pearl truns to narrowband green light, wherein at least one the blue light of blue LED lamp pearl truns to narrowband blue light.
S102, respectively displaying two groups of red, green and blue tricolor with different wavelength bands on the pixel units through the quantum dot films, wherein the pixel units of the red, green and blue tricolor with different wavelength bands are uniformly distributed on the PCB in a staggered manner;
the step of respectively displaying the red, green and blue three primary colors of two groups of different wavelength bands by the pixel unit through the quantum dot film specifically comprises:
enabling each pixel unit in a first row on the PCB to be displayed as a first group of wavelength band green light quantum dots, a first group of wavelength band red light quantum dots and a first group of wavelength band blue light quantum dots through the quantum dot film;
enabling each pixel unit in a second row on the PCB to be displayed as a second group of wavelength band green light quantum dots, a second group of wavelength band red light quantum dots and a second group of wavelength band blue light quantum dots through the quantum dot film;
the pixel units with the first group of wavelength bands and the pixel units with the second group of wavelength bands are sequentially and uniformly distributed in a staggered mode.
The pixel unit consists of three LED lamp beads, in each pixel unit in the first row, one blue LED lamp bead is converted into a first group of wavelength band green light quantum dots, the other blue LED lamp bead is converted into a first group of wavelength band red light quantum dots, and the last blue LED lamp bead is converted into a first group of wavelength band blue light quantum dots; in each pixel unit of the second row, one blue LED lamp bead is converted into a second group of wavelength band green light quantum dots, the other blue LED lamp bead is converted into a second group of wavelength band red light quantum dots, and the last blue LED lamp bead is converted into a second group of wavelength band blue light quantum dots.
In each pixel unit of the first row, two blue LED lamp beads on two opposite sides are converted into a first group of wavelength band red light quantum dots, the other blue LED lamp bead is converted into a first group of wavelength band red light quantum dots, and the last blue LED lamp bead is converted into a first group of wavelength band blue light quantum dots; in each pixel unit in the second row, two blue LED lamp beads on two opposite sides are converted into a second group of wavelength band red light quantum dots, another blue LED lamp bead is converted into a second group of wavelength band red light quantum dots, and the last blue LED lamp bead is converted into a second group of wavelength band blue light quantum dots.
S103, transmitting the 3D image signal to the PCB, and providing a left eye view image and a right eye view image by using spectral glasses corresponding to different wavelength bands.
Specifically, as shown in fig. 11, one (or 2) LED lamp beads in one group of LED lamp beads pass through the quantum dot film, and then the blue light becomes narrow-band red light in a wavelength range, one (or 2) LED lamp beads pass through the quantum dot film, and then the blue light becomes narrow-band green light in a wavelength range, and one LED lamp bead passes through the quantum dot film, and then becomes narrow-band blue light in a wavelength range. As shown in fig. 12, one (or 2) LED lamp beads of the other group of LED lamp beads change blue light into narrow-band red light in another wavelength range after passing through the quantum dot film, one (or 2) LED lamp beads change blue light into narrow-band green light in another wavelength range after passing through the quantum dot film, and one LED lamp bead changes into narrow-band blue light in another wavelength range after passing through the quantum dot film; the wavelength ranges of the two groups of lamps do not overlap. Thus, we have two sets of three primary colors of red, green and blue in different wavelength bands. And displaying the image of a left eye visual angle on the first group of LED lamp beads, and displaying the image of a right eye visual field on the second group of LED lamp beads. Meanwhile, spectral glasses (as shown in fig. 13) with corresponding wavelength bands are manufactured, as shown in fig. 14, glasses for the left eye can only pass light with a first set of wavelengths, glasses for the right eye can only pass light with a second set of wavelengths, as shown in fig. 15, 3D image signals are transmitted to the LED lamp beads on the PCB through the LED driving control device, as shown in fig. 16, different images are seen by the left eye and the right eye, and thus a 3D image effect is formed in the brain.
Example 2
As shown in fig. 2 to 4, an embodiment of the present invention further provides a quantum dot LED display screen, which is used for implementing the LED display screen 3D image implementation method of embodiment 1, and includes a PCB circuit board 10, where soldering pads 60 are uniformly arranged on the PCB circuit board 10, and a single-color LED lamp bead 20 is mounted on each soldering pad 60 in a COB packaging manner; the surface of each LED lamp bead 20 is provided with a transparent protective adhesive layer 30, light-isolating grid layers 40 are arranged between the transparent protective adhesive layers 30, and each LED lamp bead 20 is isolated by the light-isolating grid layers 40; arranging quantum dot films 50 on the transparent protective adhesive layer 30 corresponding to the LED lamp beads 20, and displaying four or three adjacent LED lamp beads 20 as red, green and blue, red, green and blue yellow or red, green and blue green through the quantum dot films 50; four or three adjacent LED lamp beads 20 are mixed and combined to form a pixel unit; the pixel units respectively display two sets of red, green and blue tricolor with different wavelength bands through the quantum dot film 50, and the pixel units of the red, green and blue tricolor with different wavelength bands are uniformly distributed on the PCB 10 in a staggered manner. Specifically, adopt high-accuracy tool, cover the transparent protection face of highly uniform on LED module surface, let LED lamp pearl 20 isolated with the air to protection LED lamp pearl 20. And then regular net-shaped grooves are manufactured by adopting a high-precision mould die pressing or laser cutting or other high-precision close cutting methods, and then non-transparent materials are filled in the grooves by using UV printing or other processes to separate each LED lamp bead 20, so that each LED lamp bead 20 forms an independent columnar body to prevent light emitted by the LED lamp bead 20 from interfering with adjacent LED lamp beads 20.
Specifically, the LED lamp beads 20 are blue LED lamp beads, and the quantum dot film 50 converts blue light of at least one of the blue LED lamp beads of four or three adjacent blue LED lamp beads into narrow-band red light, wherein the blue light of at least one of the blue LED lamp beads is converted into narrow-band green light, and wherein the blue light of at least one of the blue LED lamp beads is converted into narrow-band blue light. Specifically, as shown in fig. 3 and 4, the quantum dot film 20 includes a first group of wavelength band green light quantum dots 531G, a first group of wavelength band red light quantum dots 531R, and a first group of wavelength band blue light quantum dots 531B corresponding to each pixel unit in a first row on the PCB 10; the quantum dot film 50 comprises a second group of wavelength band green light quantum dots 532G, a second group of wavelength band red light quantum dots 532R and a second group of wavelength band blue light quantum dots 532B corresponding to each pixel unit of a second row on the PCB circuit board 10; the pixel units with the first group of wavelength bands and the light quantum dots with the second group of wavelength bands are sequentially and uniformly distributed in a staggered mode.
Specifically, the PCB 10 is provided with regularly arranged bonding pads 60, each bonding pad 60 is bound with one blue LED lamp bead 20, and the arrangement of the LED lamp beads 20 is that three or four LED lamp beads are in a group according to a certain rule. Then, transparent optical glue is adopted to cover the surface, and the LED lamp beads 20 are isolated from air to form a flat protection surface. And then, the net-shaped grooves are made on the protection surface by adopting a mould pressing, laser cutting or other precise cutting modes to separate each LED lamp bead 20. And then, filling non-transparent materials in the grooves by adopting UV printing or other modes to separate each LED lamp bead 20, and preventing light emitted by the LED lamp beads 20 from crosstalk to the adjacent LED lamp beads 20. And manufacturing a corresponding quantum dot film 50 to cover the surface of the LED display screen. The blue light emitted by one (or two) of the LED lamp beads 20 is changed into pure red light after passing through the quantum dot film 50, the blue light emitted by one (or two) of the LED lamp beads 20 is changed into pure green light after passing through the quantum dot film 20, and the blue light emitted by one of the LED lamp beads 20 is changed into pure blue light after passing through the quantum dot film 50. Thus, based on the obtained three colors of red, green and blue, a full-color LED display screen can be formed.
As shown in fig. 9, the pixel unit is composed of three LED lamp beads 20, the quantum dot film 50 corresponds to each of the pixel units in the first row, wherein one blue LED lamp bead 20 is a first group of wavelength band green light quantum dots 531G, another blue LED lamp bead 20 is a first group of wavelength band red light quantum dots 531R, and the last blue LED lamp bead 20 is a first group of wavelength band blue light quantum dots 531B; in each pixel unit of the second row corresponding to the quantum dot film 50, one blue LED lamp bead 20 is a second group of wavelength band green light quantum dots 532G, another blue LED lamp bead 20 is a second group of wavelength band red light quantum dots 532R, and the last blue LED lamp bead 20 is a second group of wavelength band blue light quantum dots 532B.
As shown in fig. 10, the pixel unit is composed of four LED lamp beads 20, the quantum dot film 50 corresponds to each pixel unit in the first row, two blue LED lamp beads 20 on two opposite sides are a first group of wavelength band red light quantum dots 531G, another blue LED lamp bead 20 is a first group of wavelength band red light quantum dots 532R, and the last blue LED lamp bead 20 is a first group of wavelength band blue light quantum dots 532B; in each pixel unit of the second row corresponding to the quantum dot film 50, two blue LED lamp beads 20 on opposite sides are second wavelength band red light quantum dots 532G, another blue LED lamp bead 20 is second wavelength band red light quantum dots 532R, and the last blue LED lamp bead 20 is second wavelength band blue light quantum dots 532B.
As shown in fig. 8, the quantum dot film 50 includes a set of PET substrate layers 51, the quantum dot material layer 53 is disposed between the PET substrate layers 51, and barrier material layers 52 are respectively disposed between the quantum dot material layer 53 and the PET substrate layers 51 on both sides.
Specifically, the optical micrometer structure layer 54 is respectively arranged on the outer side of the PET substrate layer 51, and one side of the PET substrate layer 51 is covered on the surface of the transparent protective adhesive layer 30 through optical cement.
As shown in fig. 5, two adjacent pads 60 on the PCB 10 form a group, one of the two adjacent pads 60 is used for connecting the anode of the LED lamp bead 20, and the other is used for connecting the cathode of the LED lamp bead 20.
As shown in fig. 6, the LED lamp beads 20 are mounted on the PCB 10 in a forward mounting manner, and PAD PADs of the LED lamp beads 20 are respectively connected to the positive electrode and the negative electrode of each group of the PADs 60 through a metal wire 70.
As shown in fig. 7, the LED lamp beads 20 are mounted on the PCB 10 in an inverted manner, and PAD PADs of the LED lamp beads 20 are respectively fixed on the positive electrode and the negative electrode of each group of the bonding PADs 60 by silver paste 80 or solder paste.
According to the LED display screen 3D image realization method and the quantum dot LED display screen, the LED lamp beads are arranged on the bonding pads of the PCB in a COB packaging mode, one LED lamp bead with a certain color is bound on each bonding pad, four or three adjacent LED lamp beads (1 group) can form a pixel unit through a quantum dot film, and the color combination can be red, green and blue, red, green and blue yellow or red, green and blue green. Utilize quantum dot can produce the characteristic of pure color, adopt the mode of COB, only need adopt the LED lamp pearl of single colour to produce three kinds of colours of pure red green blue, realize full-color LED display screen. Meanwhile, the pixel units respectively display two groups of red, green and blue three primary colors with different wavelength bands through the quantum dot film, and the pixel units of the red, green and blue three primary colors with different wavelength bands are uniformly distributed on the PCB in a staggered manner; and displaying the image of a left eye visual angle on the first group of LED lamp beads, and displaying the image of a right eye visual field on the second group of LED lamp beads. Meanwhile, spectral glasses with corresponding wavelength bands are manufactured, the glasses for the left eye can only pass through light with a first group of wavelengths, the glasses for the right eye can only pass through light with a second group of wavelengths, and different images can be seen by the left eye and the right eye, so that a 3D image effect is formed in the brain.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, and the scope of protection is still within the scope of the invention.
In the description of the present patent application, it is to be understood that the terms "central," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," "rows," "columns," and the like are used in the orientation or positional relationship shown in the drawings for the convenience of description and simplicity of description, but do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the novel nature of this patent application.
Furthermore, 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 implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present patent application, "plurality" means at least two, e.g., two, three, etc., unless explicitly specified otherwise.
In the patent of the invention, unless otherwise explicitly specified or limited, the terms "mounted", "connected", "fixed", and the like are to be understood in a broad sense, and for example, may be fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present patent can be understood by those skilled in the art according to specific situations.
In the patent of the invention, unless otherwise explicitly specified or limited, a first feature "on" or "under" a second feature may be directly contacted with the first and second features or indirectly contacted with the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
Claims (10)
1. A method for realizing 3D images of an LED display screen is characterized by comprising the following steps:
manufacturing uniformly arranged bonding pads on a PCB (printed Circuit Board), and installing LED lamp beads with single color on each bonding pad in a COB (chip on Board) packaging mode; four or three adjacent LED lamp beads form three colors of red, green and blue through a quantum dot film to form a pixel unit;
the pixel units respectively display two groups of red, green and blue three primary colors with different wavelength bands through the quantum dot film, and the pixel units of the red, green and blue three primary colors with different wavelength bands are uniformly distributed on the PCB in a staggered manner;
and transmitting the 3D image signal to the PCB, and providing a left eye view field image and a right eye view field image by using spectral glasses corresponding to different wavelength bands.
2. The method for realizing the 3D image of the LED display screen according to claim 1, wherein the four or three adjacent LED lamp beads are formed into three colors of red, green and blue through the quantum dot film, and the step of forming a pixel unit specifically comprises the following steps:
the LED lamp beads are blue LED lamp beads, the blue light of at least one of the blue LED lamp beads in the four or three adjacent blue LED lamp beads is converted into narrow-band red light through the quantum dot film, the blue light of at least one of the blue LED lamp beads is converted into narrow-band green light, and the blue light of at least one of the blue LED lamp beads is converted into narrow-band blue light.
3. The method for realizing the 3D image of the LED display screen according to claim 2, wherein the step of respectively displaying the red, green and blue three primary colors of two groups of different wavelength bands on the pixel unit through the quantum dot film specifically comprises the steps of:
enabling each pixel unit in a first row on the PCB to be displayed as a first group of wavelength band green light quantum dots, a first group of wavelength band red light quantum dots and a first group of wavelength band blue light quantum dots through the quantum dot film;
enabling each pixel unit in a second row on the PCB to be displayed as a second group of wavelength band green light quantum dots, a second group of wavelength band red light quantum dots and a second group of wavelength band blue light quantum dots through the quantum dot film;
the pixel units with the first group of wavelength bands and the pixel units with the second group of wavelength bands are sequentially and uniformly distributed in a staggered mode.
4. The method for realizing the 3D image of the LED display screen according to claim 3, wherein the pixel unit is composed of three LED lamp beads, and the step of respectively displaying the three primary colors of red, green and blue of two different wavelength bands by the pixel unit through the quantum dot film specifically comprises the steps of:
in each pixel unit in the first row, one blue LED lamp bead is converted into a first group of wavelength band green light quantum dots, the other blue LED lamp bead is converted into a first group of wavelength band red light quantum dots, and the last blue LED lamp bead is converted into a first group of wavelength band blue light quantum dots;
in each pixel unit in the second row, one blue LED lamp bead is converted into a second group of wavelength band green light quantum dots, the other blue LED lamp bead is converted into a second group of wavelength band red light quantum dots, and the last blue LED lamp bead is converted into a second group of wavelength band blue light quantum dots.
5. The method for realizing the 3D image of the LED display screen according to claim 3, wherein the pixel unit is composed of four LED lamp beads, and the step of respectively displaying the three primary colors of red, green and blue of two groups of different wavelength bands by the pixel unit through the quantum dot film specifically comprises the following steps:
in each pixel unit in the first row, two blue LED lamp beads on two opposite sides are converted into a first group of wavelength band red light quantum dots, the other blue LED lamp bead is converted into a first group of wavelength band red light quantum dots, and the last blue LED lamp bead is converted into a first group of wavelength band blue light quantum dots;
in each pixel unit in the second row, two blue LED lamp beads on two opposite sides are converted into a second group of wavelength band red light quantum dots, another blue LED lamp bead is converted into a second group of wavelength band red light quantum dots, and the last blue LED lamp bead is converted into a second group of wavelength band blue light quantum dots.
6. A quantum dot LED display screen is used for realizing the LED display screen 3D image realization method according to any one of claims 1-5, and is characterized by comprising a PCB (printed Circuit Board), wherein welding pads are uniformly arranged on the PCB, and LED lamp beads with single color are installed on each welding pad in a COB (chip on Board) packaging manner; the LED lamp beads are characterized in that transparent protective adhesive layers are arranged on the surfaces of the LED lamp beads, and light-isolating grid layers are arranged between the transparent protective adhesive layers and separate each LED lamp bead; setting quantum dot films corresponding to the LED lamp beads on the transparent protective adhesive layer, and displaying four or three adjacent LED lamp beads as red, green and blue, red, green and blue yellow or red, green and blue green through the quantum dot films; four or three adjacent LED lamp beads are mixed and combined to form a pixel unit; the pixel units respectively display two groups of red, green and blue three primary colors with different wavelength bands through the quantum dot films, and the pixel units of the red, green and blue three primary colors with different wavelength bands are uniformly distributed on the PCB in a staggered mode.
7. The quantum dot LED display screen of claim 6, wherein the LED lamp beads are blue LED lamp beads, and the blue light of at least one of the blue LED lamp beads in four or three adjacent blue LED lamp beads is converted into narrow-band red light through the quantum dot film, wherein the blue light of at least one of the blue LED lamp beads is converted into narrow-band green light, and the blue light of at least one of the blue LED lamp beads is converted into narrow-band blue light.
8. The quantum dot LED display screen of claim 7, wherein the quantum dot film comprises a first set of wavelength band green light quantum dots, a first set of wavelength band red light quantum dots, and a first set of wavelength band blue light quantum dots for each pixel unit in a first row on the PCB circuit board; the quantum dot film corresponds to each pixel unit in a second row on the PCB and comprises a second group of wavelength band green light quantum dots, a second group of wavelength band red light quantum dots and a second group of wavelength band blue light quantum dots; the pixel units with the first group of wavelength bands and the light quantum dots with the second group of wavelength bands are sequentially and uniformly distributed in a staggered mode.
9. The quantum dot LED display screen of claim 8, wherein the pixel unit is composed of three LED lamp beads, the quantum dot film corresponds to each of the pixel units in the first row, one blue LED lamp bead is a first group of wavelength band green light quantum dots, another blue LED lamp bead is a first group of wavelength band red light quantum dots, and the last blue LED lamp bead is a first group of wavelength band blue light quantum dots; in each pixel unit corresponding to the second row of the quantum dot film, one blue LED lamp bead is a second group of wavelength band green light quantum dots, the other blue LED lamp bead is a second group of wavelength band red light quantum dots, and the last blue LED lamp bead is a second group of wavelength band blue light quantum dots.
10. The quantum dot LED display screen of claim 8, wherein the pixel unit is composed of four LED lamp beads, the quantum dot film corresponds to each of the pixel units in the first row, two of the blue LED lamp beads on two opposite sides are a first set of wavelength band red light quantum dots, another blue LED lamp bead is a first set of wavelength band red light quantum dots, and the last blue LED lamp bead is a first set of wavelength band blue light quantum dots; in each pixel unit of the second row corresponding to the quantum dot film, two blue LED lamp beads on two opposite sides are second groups of wavelength band red light quantum dots, another blue LED lamp bead is a second group of wavelength band red light quantum dots, and the last blue LED lamp bead is a second group of wavelength band blue light quantum dots.
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