CN107909931A - Virtual LED display module and 6 times of frequency displaying methods based on three vitta shape LED chips - Google Patents
Virtual LED display module and 6 times of frequency displaying methods based on three vitta shape LED chips Download PDFInfo
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- CN107909931A CN107909931A CN201711489056.8A CN201711489056A CN107909931A CN 107909931 A CN107909931 A CN 107909931A CN 201711489056 A CN201711489056 A CN 201711489056A CN 107909931 A CN107909931 A CN 107909931A
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Classifications
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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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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
Abstract
The present invention relates to a kind of virtual LED display module and 6 times of frequency displaying methods based on three vitta shape LED chips.The virtual LED display module includes：The three-color LED chipset being made of three vitta shape LED chips；Each three vittas shape LED chip includes at least three LED luminescence units；Three vitta shape LED chips are regularly arranged, make multiple LED luminescence units composition M × N matrixes；LED luminescence units transversely on equidistantly arranged with the first spacing, equidistantly arranged with the second spacing along longitudinal direction, and the first spacing and the second spacing are unequal；LED luminescence units in the first oblique line directions of matrix are identical primary colours；LED luminescence units in the second oblique line directions of matrix are arranged in turn for the LED luminescence units of three kinds of primary colours by particular order.The present invention is realized virtual display by 6 times of scannings, is improved image display clarity using the LED chip of the RGB tri- colors one prepared based on GaN material.
Description
Technical field
The present invention relates to LED display display field, more particularly to a kind of virtual LED based on three vitta shape LED chips
Display module and 6 times of frequency displaying methods.
Background technology
LED display is capable of the image information of real-time display source video image as Digital Image Display media.Influence
The key factor of LED display display effect has at 2 points：First, the resolution ratio of LED display；Second, the display color of display screen
And tonal gradation.Indoor LED display is generally existed using the high small space distance LED display screen of physical resolution, its LED point spacing
Below P2.5, mainly including P2.5, P2.0, P1.8, P1.5 equal-specification.The display color and tonal gradation of LED display at present
Standard have been able to meet the requirements, and indoor LED display has the requirement of higher for resolution ratio always, it would be desirable to realizes more
High display resolution.
The raising of display resolution can use two kinds of approach：First, physical resolution is improved, second, being shared by sub-pix
Virtual display is carried out to realize a high virtual resolution.At present country's LED pipe high density electronics assembly technology it is immature,
LED pipe and complicated, of high cost etc. the limitation of electronic component encapsulation physical size and circuit hinder display screen physical point
The raising of resolution.And virtually shown on sub-pix, though existing correlative study shows to increase pixel by virtually showing
Add 4 times, times yupin effect of even more high, but increasing with frequency multiplication number, such as when frequency multiplication number reaches more than 10 times, and meeting
The phenomenon for bringing display image to obscure or trail.Therefore it is single to further improve the resolution ratio of indoor small clearance display screen
It is pure to realize preferable effect by virtual display.
Therefore a kind of display unit simple in structure, cost is low is found, and can more effectively improves display and differentiate
The technology of rate, is always research hotspot at present in the industry.
The content of the invention
Therefore, to solve technological deficiency and deficiency existing in the prior art, the present invention proposes that one kind is based on three color bar-shaped LEDs
The virtual LED display module of chip and 6 times of frequency displaying methods.
Specifically, a kind of virtual LED based on three vitta shape LED chips that one embodiment of the invention proposes shows mould
Group, including：The three-color LED chipset being made of three vitta shape LED chips；Each three vittas shape LED chip includes 3 LED and sends out
Light unit；Three vitta shape LED chips are regularly arranged, make multiple LED luminescence units composition M × N matrixes；In M × N matrix, LED hairs
Light unit transversely on equidistantly arranged with the first spacing, equidistantly arranged with the second spacing along longitudinal direction is upper, and the first spacing and
Second spacing is unequal；LED luminescence units in the first oblique line directions of M × N matrix shine list for the LED of identical primary colours
Member；LED luminescence units in the second oblique line directions of M × N matrix press particular order for the LED luminescence units of three kinds of primary colours
Arrange in turn.
In one embodiment of the invention, virtual LED display module further includes virtual display control circuit, for controlling
Virtual LED display module is virtually shown.
In one embodiment of the invention, virtual display control circuit is 6 frequency multiplication scanning circuits.
In one embodiment of the invention, three vitta shape LED chips are tri- colors of the RGB one prepared based on GaN material
LED chip.
In one embodiment of the invention, three vitta shape LED chips are arranged by 3 LED luminescence units equidistant lines, and
Including 1 red-light LED luminescence unit, 1 green LED unit and 1 blue-ray LED luminescence unit.
In one embodiment of the invention, three vitta shape LED chips further include：1 the first public electrode, is arranged at three
The first end of vitta shape LED chip；3 second electrodes, are respectively arranged at the second end of three LED luminescence units.
In one embodiment of the invention, three-color LED chip includes the one or three vitta shape LED chip, the two or three vitta
Shape LED chip and the three or three vitta shape LED chip；3 LED luminescence units of the one or three vitta shape LED chip are arranged for RGB orders
Row；3 LED luminescence units of the two or three vitta shape LED chip arrange for BRG orders；3 of three or three vitta shape LED chip
LED luminescence units arrange for GBR orders.
A kind of 6 frequency multiplication display side of virtual LED based on three vitta shape LED chips that an alternative embodiment of the invention provides
Method, for driving virtual LED display module virtually to be shown.6 times of frequency displaying methods of the virtual LED include：
Define 6 kinds of scanning coordinates, including the first coordinate, the second coordinate, the 3rd coordinate, 4-coordinate, Five Axis and the
Six coordinates；
The scan period of 6 sequential, including the first scan period, the second scanning week are divided to each two field picture of input
Phase, the 3rd scan period, the 4th scan period, the 5th scan period, the 6th scan period；
The display data of each corresponding scan period is generated according to the image pixel data of each two field picture；
Display data is received, according to 6 kinds of scanning coordinates, scan periods, virtual LED display module is driven.
In one embodiment of the invention, 6 kinds of scanning coordinates include：
First coordinate, since the virtual LED display module upper left corner, by every a line adjacent 2 sub-pixels R, G with it is next
Row 1 sub- pixel B adjacent thereto is triangle, and virtual display pixel is appeared on the right oblique line being made of all R primary colours；
Remaining each sub-pixel forms 1/3rd virtual display pixels；Each sub-pixel is only using once；
Second coordinate, since the virtual LED display module upper left corner, by every a line adjacent 2 sub-pixels G, B with it is next
Row 1 sub-pixel R adjacent thereto is triangle, and virtual display pixel is appeared on the right oblique line being made of all G primary colours；
Remaining each sub-pixel forms 1/3rd virtual display pixels；Each sub-pixel is only using once；
3rd coordinate, since the virtual LED display module upper left corner, by 2 adjacent sub- pixel Bs of every a line, R with it is next
Row 1 sub-pixel G adjacent thereto is triangle, and virtual display pixel is appeared on the right oblique line being made of all B primary colours；
Remaining each sub-pixel forms 1/3rd virtual display pixels；Each sub-pixel is only using once；
4-coordinate, since the virtual LED display module upper left corner, by every a line adjacent 1 sub-pixel G and next line
2 sub- pixel Bs, R adjacent thereto are triangle, and virtual display pixel is appeared on the right oblique line being made of all R primary colours；
Remaining each sub-pixel forms 1/3rd virtual display pixels；Each sub-pixel is only using once；
Five Axis, since the virtual LED display module upper left corner, by 1 adjacent sub- pixel B of every a line and next line
2 sub-pixels R, G adjacent thereto are triangle, and virtual display pixel is appeared on the right oblique line being made of all G primary colours；
Remaining each sub-pixel forms 1/3rd virtual display pixels；Each sub-pixel is only using once；
6th coordinate, since the virtual LED display module upper left corner, by every a line adjacent 1 sub-pixel R and next line
2 sub-pixels G, B adjacent thereto are triangle, and virtual display pixel is appeared on the right oblique line being made of all B primary colours；
Remaining each sub-pixel forms 1/3rd virtual display pixels；Each sub-pixel is only using once.
In one embodiment of the invention, according to each corresponding scanning of the image pixel data of each two field picture generation
The step of display data in cycle, includes：
According to the image pixel data of the first coordinate and each two field picture, the first display of corresponding first scan period is generated
Data；
According to the image pixel data of the second coordinate and each two field picture, the second display of corresponding second scan period is generated
Data；
According to the image pixel data of the 3rd coordinate and each two field picture, the 3rd display of corresponding 3rd scan period is generated
Data
According to the image pixel data of 4-coordinate and each two field picture, the 4th display of corresponding 4th scan period is generated
Data；
According to the image pixel data of Five Axis and each two field picture, the 5th display of corresponding 5th scan period is generated
Data；
According to the image pixel data of the 6th coordinate and each two field picture, the 6th display of corresponding 6th scan period is generated
Data.
Virtual LED display module provided in an embodiment of the present invention based on three vitta shape LED chips, employs based on GaN
The bar-shaped LED chip of RGB tri- colors one prepared by the luminescent material of material totally three kinds of colors, by rationally setting each zone isolation
Layer thickness, make multiple three vittas shape LED chips it is regularly arranged, splicing be assembled into three-color LED chipset, form all primary colours
The equidistant evenly distributed small spacing three-colour light-emitting cell matrix array of luminescence unit, improves physical resolution.Meanwhile the void
Intend the method that LED display modules are shared by sub-pixel, carry out 6 times of scannings to it using virtual display control circuit, realize empty
Intend pixel and show that visual density increases to 6 times, further significantly improves display resolution, make the clarity of image display
It is significantly improved, effectively improves display effect.
By the detailed description below with reference to attached drawing, other side of the invention and feature become obvious.But it should know
Road, which is only the purpose design explained, not as the restriction of the scope of the present invention, this is because it should refer to
Appended claims.It should also be noted that unless otherwise noted, it is not necessary to which scale attached drawing, they only try hard to concept
Ground illustrates structure and flow described herein.
Brief description of the drawings
Below in conjunction with attached drawing, the embodiment of the present invention is described in detail.
Fig. 1 is the structural representation of the virtual LED display module provided in an embodiment of the present invention based on three vitta shape LED chips
Figure；
Fig. 2 (a)~Fig. 2 (c) is the structure diagram of three vittas shape LED chip provided in an embodiment of the present invention；
Fig. 3 is the structure diagram for the three vitta shape LED chips that another embodiment of the present invention provides；
Fig. 4 is the flow chart of the preparation method of three vittas shape LED chip provided in an embodiment of the present invention；
Fig. 5 is the stream of virtual LED 6 times of frequency displaying methods provided in an embodiment of the present invention based on three vitta shape LED chips
Cheng Tu.
Fig. 6 is the virtual display of the virtual LED display module provided in an embodiment of the present invention based on three vitta shape LED chips
Pixel distribution schematic diagram；
Fig. 7 is that the first coordinate that the virtual display pixel of virtual LED display module provided in an embodiment of the present invention is distributed shows
It is intended to；
Fig. 8 is that the second coordinate that the virtual display pixel of virtual LED display module provided in an embodiment of the present invention is distributed shows
It is intended to；
Fig. 9 is that the 3rd coordinate that the virtual display pixel of virtual LED display module provided in an embodiment of the present invention is distributed shows
It is intended to；
Figure 10 is that the 4-coordinate that the virtual display pixel of virtual LED display module provided in an embodiment of the present invention is distributed shows
It is intended to；
Figure 11 is that the Five Axis that the virtual display pixel of virtual LED display module provided in an embodiment of the present invention is distributed shows
It is intended to；
Figure 12 is that the 6th coordinate that the virtual display pixel of virtual LED display module provided in an embodiment of the present invention is distributed shows
It is intended to.
Embodiment
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, below in conjunction with the accompanying drawings to the present invention
Embodiment be described in detail.
Embodiment one
Referring to Fig. 1, Fig. 1 is that a kind of virtual LED based on three vitta shape LED chips provided in an embodiment of the present invention shows mould
The structure diagram of group.
The virtual LED display module 10 includes three-color LED chipset 11, is made of several three vittas shape LED chips；Often
A three vittas shape LED chip includes 3 LED luminescence units R, G, B；Several three vittas shape LED chips have three types,
Including the one or three vitta shape LED chip 12, the two or three vitta shape LED chip 13 and the three or three vitta shape LED chip 14.Wherein,
3 LED luminescence units of the one or three vitta shape LED chip 12 arrange for RGB orders；The 3 of two or three vitta shape LED chip
A LED luminescence units arrange for BRG orders；3 LED luminescence units of the three or three vitta shape LED chip are suitable for GBR
Sequence arranges.Several three vittas shape LED chips are regularly arranged, horizontal spacing D2, longitudinal pitch D1.Multiple LED shine
Unit forms M × N matrix, and in the M × N matrix, LED luminescence units are transversely upper equidistantly to be arranged with the first space D 3, along indulging
Equidistantly arranged with the second space D 4 upwards, and the value of the first spacing and the second spacing should be arranged to unequal, so as to carry out
During virtual display, the virtual pixel of generation meets equidistantly arrangement；LED in the first oblique line directions of M × N matrix shines
Unit is the LED luminescence units of identical primary colours；LED luminescence units in the second oblique line directions of M × N matrix are three kinds of bases
The LED luminescence units of color are arranged in turn by particular order.
In one embodiment of the invention, the first row of the three-color LED chipset 11 of the virtual LED display module 10 by
Multiple one or three vitta shape LED chips 12 form, and the second row is made of multiple two or three vitta shape LED chips 13, the third line by
Multiple three or three vitta shape LED chips 14 form, and in this order, with every three behaviors a cycle, rearrange M × N matrix.Position
In the LED luminescence units that the LED luminescence units in the right oblique line directions of M × N matrix are identical primary colours；Positioned at a left side for M × N matrix
LED luminescence units in oblique line directions are arranged in turn for the LED luminescence units of three kinds of primary colours by particular order.Also, M × N squares
In battle array, LED luminescence units transversely go up the first space D of arrangement3The second spacing arranged more than LED luminescence units along longitudinal direction
D4。
In another embodiment of the present invention, the first row of the three-color LED chipset 11 of the virtual LED display module 10
It is made of multiple one or three vitta shape LED chips 12, the second row is made of multiple three or three vitta shape LED chips 14, the third line
It is made of multiple two or three vitta shape LED chips 13, in this order, with every three behaviors a cycle, rearranges M × N matrix.
LED luminescence units in the left oblique line directions of M × N matrix are the LED luminescence units of identical primary colours；Positioned at M × N matrix
LED luminescence units in right oblique line directions are arranged in turn for the LED luminescence units of three kinds of primary colours by particular order.Also, M × N
In matrix, LED luminescence units transversely go up the first space D of arrangement3Less than LED luminescence units arrange along longitudinal direction second between
Away from D4。
In yet another embodiment of the present invention, laterally upper LED luminescence units and/or the upper LED in longitudinal direction are sent out in M × N matrix
When the quantity of light unit is not 3 integral multiple, which further includes monochromatic LED chip, according to virtual LED
The arrangement regulation of each luminescence unit in display module 10, in the marginal position of display module, can be used cooperatively monochromatic LED chip,
It includes 1 red-light LED unit or 1 green light LED unit or 1 blue-ray LED unit.
The virtual LED display module 10 further includes virtual display control circuit 15, empty for controlling LED display modules to carry out
Intend display.The virtual display control circuit 15 has storage chip and driving chip, and storage chip receives aobvious for storage
Registration evidence, driving chip generate corresponding driving current after receiving display data, and driving virtual LED display module carries out image
Or the display of video data.In one embodiment of the present of invention, all LED luminescence units groups of the virtual LED display module 10
Into regular array in, a sub-pixel of each LED luminescence unit as the virtual LED display module 10.Each LED
Luminescence unit and 2 LED luminescence units neighbouring around it can form 1 virtual display pixel, each virtually shows picture
Element includes 3 LED luminescence units, and respectively 3 kinds of primary colours, and 3 LED luminescence units form triangle.The one of the present invention
In a embodiment, LED luminescence units B as shown in Figure 1,6 void are formed with totally 6 LED luminescence units neighbouring around it
Intending display pixel P11, P12, P13, P14, P15, P16, i.e. LED luminescence units B has carried out 6 times and has shared, correspondingly, virtual display
Control circuit 15 uses 6 frequency multiplication scanning circuits, 6 frequency multiplication scannings is carried out to LED display modules, in the reality of virtual LED display module
Produced around the sub-pixel of border with the virtual pixel of 6 times of regularly arranged quantity of array way so that display resolution significantly carries
Height, image display become apparent from.Because the virtual LED display module of the embodiment of the present invention, the LED luminescence units row of identical primary colours
Arrange it is in alignment, so when carrying out 6 frequency multiplication scanning, although virtual display control circuit 15 adds scanning times,
Wiring but simplifies a lot than traditional display module.
In addition, it is noted that the virtual LED display module 10 of the embodiment of the present invention, several three vittas shape LED cores
Piece except horizontal positioned using mode shown in Fig. 1, with every three behaviors a cycle carry out it is regularly arranged outside, can also be by three colors
Bar-shaped LED chip is placed vertically, is arranged with every three row for a cycle, and then can also realize the high-resolution of 6 frequencys multiplication
Virtual display.
Referring to Fig. 2, Fig. 2 (a)~Fig. 2 (c) is that the structure of three kind of three vitta shape LED chip provided in an embodiment of the present invention is shown
It is intended to.If Fig. 2 (a) is the structure diagram of the one or three vitta shape LED chip, the one or three vitta shape LED chip 12 is to be based on GaN
The LED chip for the RGB tri- colors one that material is prepared using the luminescent material of three kinds of colors altogether.As shown in Figure 2, the one or three color
Bar-shaped LED chip 12 includes the luminescence unit of 3 different base colors：Red-light LED luminescence unit 21,22 and of green LED unit
23,3 LED luminescence units of blue-ray LED luminescence unit arrange for RGB orders.
Isolated substance is filled with each LED luminescence units surrounding, isolation is formed between two adjacent LEDs luminescence unit
Layer, including red-light LED separation layer 24, green light LED separation layer 25 and blue-ray LED separation layer 26.Said with reference to Fig. 1 and Fig. 2 (a)
Bright, the one or three vitta shape LED chip 12 of the embodiment of the present invention is in the preparation, it is contemplated that the thickness of separation layer, its thickness need
Meet when the three-color LED chipset 11 of the regularly arranged composition virtual LED display module 10 of multiple three vittas shape LED chips,
In the array for ensureing three-color LED chipset 11, the spacing between two LED luminescence units of arbitrary neighborhood is equal.Therefore, determining
During the thickness of separation layer, to compensate multiple three vittas shape LED chips when splicing assembling in two neighboring three vittas shape LED chip
Between existing clearance D1And D2, which cannot be too small.Specifically such as, each one or three vitta shape LED chip 12 it is upper and lower,
The thickness of the separation layer at left and right four edges is respectively d1、d2、d3、d4, inside same one or three vitta shape LED chip 12,
The thickness of separation layer between two adjacent LED luminescence units of left and right is d5And d6.Usually, (D should be met1+d1+d2)=d5
=d6, (D2+d3+d4)=d5=d6, meanwhile, under conditions of the horizontal permission of chipset packaging technology is met, make adjacent core as far as possible
Space D between piece1And D2Value accomplish minimum, also, d1、d2、d3、d4、d5And d6Value also as far as possible take a less value,
So that the spacing between two adjacent LEDs luminescence unit reaches minimum, and then reach the physical resolution of virtual LED display module
To maximum.
Specifically, in one embodiment of the invention, the upper and lower, left and right of each one or three vitta shape LED chip 12
The thickness of the separation layer at four edges is equal, i.e. d1=d2=d3=d4.Multiple three vittas shape LED chips are assembled into three-color LED core
During piece group 11, to meet LED luminescence units transversely upper the first space D arranged3Arrange more than LED luminescence units along longitudinal direction
The second space D4, the spacing between two neighboring three vittas shape LED chip is D1>D2。
One or three vitta shape LED chip 12 further includes N-type electrode and P-type electrode.In one embodiment of the invention,
A pair of of N-type electrode and P-type electrode are each provided with each LED luminescence units, N-type electrode is arranged at each LED luminescence units
N-type end, P-type electrode is arranged at the p-type end of each LED luminescence units.Specifically such as, red-light LED luminescence unit 21 is provided with N
Type electrode 211 and P-type electrode 212, green LED unit 22 are provided with N-type electrode 221 and P-type electrode 222, blue-ray LED hair
Light unit 23 is provided with N-type electrode 231 and P-type electrode 232.
If Fig. 2 (b) and Fig. 2 (c) are the structure of the two or three vitta shape LED chip and the three or three vitta shape LED chip respectively
The structure of schematic diagram, the two or three vitta shape LED chip and the three or three vitta shape LED chip and the one or three vitta shape LED chip is not
With the difference that puts in order for the LED luminescence units for being only that three kinds of primary colours, 3 LED hairs of the two or three vitta shape LED chip
Light unit arranges for BRG orders, and 3 LED luminescence units of the three or three vitta shape LED chip arrange for GBR orders.
Referring to Fig. 3, Fig. 3 is the structure diagram for the three vitta shape LED chips that another embodiment of the present invention provides.To make this
The structure of three vitta shape LED chips 30 is simpler, and multiple N-type electrodes of all LED luminescence units are arranged to a public N
Type electrode, is arranged on the N-type end of the three vittas shape LED chip 30, and multiple P-type electrodes are independently arranged at each LED and shine
The p-type end of unit, or multiple P-type electrodes of all LED luminescence units are arranged to a public P-type electrode, it is arranged on this
The p-type end of three vitta shape LED chips 30, multiple N-type electrodes are independently arranged at the N-type end of each LED luminescence units.
Specifically, in one embodiment of the invention, the red-light LED luminescence unit 31 of three vitta shape LED chips 30 is set
N-type electrode 311 is equipped with, green LED unit 32 is provided with N-type electrode 321, and blue-ray LED luminescence unit 33 is provided with N-type electricity
Pole 331, public P-type electrode 34 is provided with the p-type end of the three vittas shape LED chip 30.
Embodiment two
Three vitta shape LED chips of the embodiment of the present invention are altogether using the luminescent material system of three kinds of colors based on GaN material
The LED chip of standby RGB tri- colors one.The three vittas shape LED chip includes the luminescence unit of three kinds of primary colours from structure, is red
Light LED luminescence units, green LED unit, blue-ray LED luminescence unit, further include N-type electrode and P-type electrode.Three kinds of primary colours
Isolated substance is filled with around luminescence unit, separation layer is formed between two adjacent LEDs luminescence unit.
Referring to Fig. 4, Fig. 4 is the flow chart of the preparation method of three vittas shape LED chip provided in an embodiment of the present invention.Specifically
Ground, the preparation method following steps of the three vittas shape LED chip：
401, select substrate.
In an embodiment of the invention, sapphire material or SiC material are selected as substrate.
402, BLUE LED emissions structure is prepared on substrate, obtains monochromatic ray structure.
The material of blue-ray LED ray structure includes GaN material.Specifically, the first GaN bufferings are sequentially prepared on substrate
Layer, the first GaN stabilized zones, the first n-type GaN layer, the first InGaN/GaN multiple quantum well active layers, the first p-type AlGaN barrier layers,
First p-type GaN layer.Wherein, the first InGaN/GaN multiple quantum well active layers include multiple GaN barrier layers and multiple InGaN quantum
Well layer, GaN barrier layers and InGaN quantum well layers are arranged alternately.
403, etching forms feux rouges wick groove on monochromatic ray structure, and preparing red-light LED in feux rouges wick groove shines
Structure, obtains dual color light emitting structure.
In an embodiment of the invention, the first SiO is deposited in the first p-type GaN layer using pecvd process2Layer, uses
Wet-etching technology is in the first SiO2Specific location etches the first rectangular window on layer, then using dry etch process in window
Scope, which persistently etches to be formed, removes the first SiO after the first groove2Layer, the first p-type GaN layer upper surface, substrate upper surface and
The side wall of first groove precipitates the 2nd SiO2Layer, the upper of the first p-type GaN layer upper surface and substrate is etched using dry etch process
2nd SiO on surface2Layer is with the first SiO of the side wall of the first groove formation2Separation layer, for isolate blue light emitting structure with it is red
Light ray structure, so far forms feux rouges wick groove.
The 2nd GaN cushions, the second N-shaped GaAs cushions, the second N-shaped GaAs is sequentially prepared in feux rouges wick groove to stablize
Layer, the 2nd GalnP/A1GaInP multiple quantum well active layers, the second p-type A1GaInP barrier layers, the second p-type GaAs contact layers.Its
In, the 2nd GalnP/A1GaInP multiple quantum well active layers include multiple GalnP barrier layers and multiple A1GaInP barrier layers,
GalnP barrier layers and A1GaInP barrier layers are arranged alternately.
In an embodiment of the invention, 1 the first rectangular window is etched using wet-etching technology, forms 1 first
Groove, forms 1 feux rouges wick groove, finally prepares 1 red-light LED ray structure.
404, etching forms green light wick groove in dual color light emitting structure, and green LED is prepared in green light wick groove
Structure, obtains the first three-colour light-emitting structure.
In an embodiment of the invention, the 3rd SiO is deposited in the first p-type GaN layer using pecvd process2Layer；Using
Wet-etching technology is in the 3rd SiO2Specific location etches the second rectangular window on layer；Again using dry etch process in window
Scope, which persistently etches to be formed, removes the 3rd SiO after the second groove2Layer；The first p-type GaN layer upper surface, substrate upper surface and
The side wall of second groove precipitates the 4th SiO2Layer；The upper of first p-type GaN layer upper surface and substrate is etched using dry etch process
4th SiO on surface2Layer is with the 2nd SiO of the side wall of the second groove formation2Separation layer, for isolating red light-emitting structure, blue light
Ray structure and green luminescence structure, so far form green light wick groove.
The 3rd GaN cushions, the 3rd GaN stabilized zones, the 3rd n-type GaN layer, the 3rd are sequentially prepared in green light wick groove
InGaN/GaN multiple quantum well active layers, the 3rd p-type AlGaN barrier layers, the 3rd p-type GaN layer.Wherein, the 3rd p-type AlGaN stops
Layer includes multiple GaN barrier layers and multiple InGaN quantum well layers, and GaN barrier layers and InGaN quantum well layers are arranged alternately.
In an embodiment of the invention, 1 the second rectangular window is etched using wet-etching technology, forms 1 second
Groove, forms 1 green light wick groove, finally prepares 1 green LED structure.
In an embodiment of the invention, by step 401~404, the first three-colour light-emitting structure being prepared, comprising
1 red light-emitting structure, 1 green luminescence structure, 1 blue light emitting structure, distributing order R, G, B.Step 403, step
404 order can be exchanged arbitrarily.
405, light screening material is prepared in the first three-colour light-emitting structure upper surface, forms the light-emission window of specified layout and size
Mouthful, obtain the second three-colour light-emitting structure；
In an embodiment of the invention, the second three-colour light-emitting structure being prepared, 1 red light-emitting structure, 1 it is green
Light ray structure and the luminescence window of 1 blue light emitting structure are equal in magnitude, equidistantly arrangement.
406, N-type electrode is prepared at the N-type end of the second three-colour light-emitting structure, P-type electrode is prepared at p-type end, obtains three colors
Bar-shaped LED chip.
In an embodiment of the invention, a N-type electricity is prepared respectively at the N-type end of each luminescence unit and p-type end
Pole and P-type electrode.
In another embodiment, a common n-type electrode is prepared at the N-type end of the second three-colour light-emitting structure,
A P-type electrode is respectively prepared at the p-type end of each luminescence unit.
In another embodiment of the invention, a public P-type electrode is prepared at the p-type end of the second three-colour light-emitting structure,
A N-type electrode is respectively prepared at the N-type end of each luminescence unit.
The preparation method of the embodiment of the present invention, when etching wick groove on each ray structure, the position of fluting determines
The distribution mode of each primary colours luminescence unit in finally prepd three vittas shape LED chip, the size of fluting determine each primary colours hair
The size of light unit, the spacing between adjacent slot determine the point spacing of each primary colours luminescence unit.Therefore, it is different by setting
Parameter values, can prepare three vitta shape LED chips of various different sizes, such as tri- vitta shape LED chips of the first RGB, the
Two BRG, tri- vitta shape LED chips, tri- vitta shape LED chips of the 3rd GBR.
In conclusion according to the preparation method of the embodiment of the present invention, the LED chip of three colors one, the chip can be prepared
The light of multiple color can be produced in the form of single-chip, greatly reduces the dosage of fluorescent powder；In addition, the chip is integrated,
Integrated level is high, greatly reduces cost of manufacture；And the chip also has the advantages that flexible modulation colour temperature.
Embodiment three
Referring to Fig. 5, Fig. 5 shows for virtual LED 6 frequency multiplication provided in an embodiment of the present invention based on three vitta shape LED chips
The flow chart of method.The virtual LED display methods comprises the following steps：
501, define 6 kinds of scanning coordinates.
Referring to Fig. 6, Fig. 6 is the virtual LED display module provided in an embodiment of the present invention based on three vitta shape LED chips
Virtual display pixel distribution schematic diagram.The virtual LED display module of the embodiment of the present invention, is pressed comprising 54 primary colours luminescence units altogether
9 × 6 matrix arrangements, i.e. 54 sub-pixels, every 3 sub-pixels form a display pixel, form 18 display pixels altogether.This 9
LED luminescence units are arranged according to RGB orders in the transverse direction of × 6 matrixes, and LED luminescence units are arranged according to RBG orders on longitudinal direction
Row, the first space D that LED luminescence units are transversely above arranged3The second space D arranged more than LED luminescence units along longitudinal direction4,
And the LED luminescence units that the LED luminescence units in right oblique line directions are identical primary colours.Each LED luminescence units carry out 6 times altogether
Enjoy, 6 virtual display pixels can be formed with 6 LED luminescence units neighbouring around it, such as LED luminescence unit B, and around it
Neighbouring totally 6 LED luminescence units form 6 virtual display pixel P61, P62, P63, P64, P65, P66.In this way, this 9 × 6
The virtual display pixel quantity produced on matrix shares 8 × 10=80, about 6 times of actual displayed pixel number.And this 80
A virtual display pixel is transversely arranged with longitudinal parity spacing, and horizontal spacing is equal to longitudinal pitch, i.e. any two is virtual
Spacing between display pixel is equal.
Referring to Fig. 7, Fig. 7 is that the virtual display pixel of virtual LED display module provided in an embodiment of the present invention is distributed
One coordinate schematic diagram.Since the virtual LED display module upper left corner, by every a line adjacent 2 sub-pixels R, G and next line with
Its 1 adjacent sub- pixel B is triangle, and virtual display pixel is appeared on the right oblique line being made of all R primary colours；Remaining
Each sub-pixel forms 1/3rd virtual display pixels；Each sub-pixel is only using once.
Referring to Fig. 8, Fig. 8 is that the virtual display pixel of virtual LED display module provided in an embodiment of the present invention is distributed
Two coordinate schematic diagrames.Since the virtual LED display module upper left corner, by every a line adjacent 2 sub-pixels G, B and next line with
Its 1 adjacent sub-pixel R is triangle, and virtual display pixel is appeared on the right oblique line being made of all G primary colours；Remaining
Each sub-pixel forms 1/3rd virtual display pixels；Each sub-pixel is only using once.
Referring to Fig. 9, Fig. 9 is that the virtual display pixel of virtual LED display module provided in an embodiment of the present invention is distributed
Three coordinate schematic diagrames.Since the virtual LED display module upper left corner, by every a line adjacent 2 sub- pixel Bs, R and next line with
Its 1 adjacent sub-pixel G is triangle, and virtual display pixel is appeared on the right oblique line being made of all B primary colours；Remaining
Each sub-pixel forms 1/3rd virtual display pixels；Each sub-pixel is only using once.
Referring to Figure 10, Figure 10 is that the virtual display pixel of virtual LED display module provided in an embodiment of the present invention is distributed
4-coordinate schematic diagram.Since the virtual LED display module upper left corner, by 1 adjacent sub-pixel G of every a line and next line with
Its adjacent 2 sub- pixel Bs, R are triangle, and virtual display pixel is appeared on the right oblique line being made of all R primary colours；Its
Each remaining sub-pixel forms 1/3rd virtual display pixels；Each sub-pixel is only using once.
Referring to Figure 11, Figure 11 is that the virtual display pixel of virtual LED display module provided in an embodiment of the present invention is distributed
Five Axis schematic diagram.Since the virtual LED display module upper left corner, by 1 adjacent sub- pixel B of every a line and next line with
Its adjacent 2 sub-pixels R, G are triangle, and virtual display pixel is appeared on the right oblique line being made of all G primary colours；Its
Each remaining sub-pixel forms 1/3rd virtual display pixels；Each sub-pixel is only using once.
Referring to Figure 12, Figure 12 is that the virtual display pixel of virtual LED display module provided in an embodiment of the present invention is distributed
6th coordinate schematic diagram.Since the virtual LED display module upper left corner, by 1 adjacent sub-pixel R of every a line and next line with
Its adjacent 2 sub-pixels G, B are triangle, and virtual display pixel is appeared on the right oblique line being made of all B primary colours；Its
Each remaining sub-pixel forms 1/3rd virtual display pixels；Each sub-pixel is only using once.
502, is divided to each two field picture of input, 6 scan periods include the equal time scan period of 6 sequential
Section.
503, the display data of each corresponding scan period is generated according to the image pixel data of each two field picture.
According to the image pixel data of the first coordinate and each two field picture, the first display of corresponding first scan period is generated
Data；
According to the image pixel data of the second coordinate and each two field picture, the second display of corresponding second scan period is generated
Data；
According to the image pixel data of the 3rd coordinate and each two field picture, the 3rd display of corresponding 3rd scan period is generated
Data
According to the image pixel data of 4-coordinate and each two field picture, the 4th display of corresponding 4th scan period is generated
Data；
According to the image pixel data of Five Axis and each two field picture, the 5th display of corresponding 5th scan period is generated
Data；
According to the image pixel data of the 6th coordinate and each two field picture, the 6th display of corresponding 6th scan period is generated
Data.
504, display data is received, according to the scanning coordinate, scanning sequence and cycle of definition, to virtual LED display module
It is driven.
In the embodiment of the present invention, virtual display control circuit has storage chip and driving chip, and storage chip is used to deposit
The display data received is stored up, driving chip generates corresponding driving current after receiving display data, and driving virtual LED is shown
Module carries out the display of image or video data.When the data source of input is image, after carrying out 6 scanning, image is completed empty
Intend display；It is right again successively after 6 virtual displays of scanning completion are carried out to a two field picture if the data source of input is video
Next two field picture carries out 6 scanning, is finally completed and the high-resolution of video data is virtually shown.
By 3 times of frequency displaying methods of virtual LED based on three vitta shape LED chips of the embodiment of the present invention, using three colors
The LED chip of one, realizes the point spacing of smaller, then the method shared by sub-pixel, originally 18 display pixels, can be with
Form 80 virtual display pixels.Sub-pixel positioned at virtual LED display module edge position, generally can not achieve 6 times
Shared, when virtual LED display module is larger, and the luminescence unit quantity of composition virtual LED display module is more, visual density increases
Add to about 6 times.Therefore, the method for the embodiment of the present invention, makes the clarity of image display be significantly improved, effectively improves
Display effect, indoors display area have good application value.
LED display modules described in above example can be that LED light bar, LED lamp panel, LED box, LED are shown
Screen etc. is any.
In conclusion specific case used herein shows virtual LED of the present invention based on three vitta shape LED chips
Module and 6 times of frequency displaying methods are set forth, the explanation of above example is only intended to help understand the present invention method and
Its core concept；Meanwhile for those of ordinary skill in the art, according to the thought of the present invention, in embodiment and answer
With there will be changes in scope, in conclusion this specification content should not be construed as limiting the invention, it is of the invention
Protection domain should be subject to appended claim.
Claims (10)
- A kind of 1. virtual LED display module based on three vitta shape LED chips, it is characterised in that including：By three color bar-shaped LEDs The three-color LED chipset of chip composition；Each three vittas shape LED chip includes 3 LED luminescence units；The three vittas shape LED chip is regularly arranged, makes multiple LED luminescence units composition M × N matrixes；In the M × N matrix, the LED luminescence units transversely on equidistantly arranged with the first spacing, the LED shines list Member is equidistantly arranged along longitudinal direction with the second spacing, and first spacing and second spacing are unequal；The LED luminescence units in the first oblique line directions of the M × N matrix are the LED luminescence units of identical primary colours；The LED luminescence units in the second oblique line directions of the M × N matrix are the LED luminescence units of three kinds of primary colours Arranged in turn by particular order.
- 2. virtual LED display module according to claim 1, it is characterised in that the virtual LED display module further includes Virtual display control circuit, for controlling the virtual LED display module virtually to be shown.
- 3. virtual LED display module according to claim 2, it is characterised in that the virtual display control circuit is 6 times Frequency scanning circuit.
- 4. virtual LED display module according to claim 1, it is characterised in that the three vittas shape LED chip is to be based on The LED chip of RGB tri- colors one prepared by GaN material.
- 5. virtual LED display module according to claim 1, it is characterised in that the three vittas shape LED chip is by 3 LED luminescence units equidistant line arranges, and including 1 red-light LED luminescence unit, 1 green LED unit and 1 blue light LED luminescence units.
- 6. virtual LED display module according to claim 5, it is characterised in that the three vittas shape LED chip is also wrapped Include：1 the first public electrode, is arranged at the first end of the three vittas shape LED chip；3 second electrodes, are respectively arranged at the second end of three LED luminescence units.
- 7. virtual LED display module according to claim 5, it is characterised in that the three-color LED chip includes the one or three Vitta shape LED chip, the two or three vitta shape LED chip and the three or three vitta shape LED chip；3 LED luminescence units of the one or the three vitta shape LED chip arrange for RGB orders；3 LED luminescence units of the two or the three vitta shape LED chip arrange for BRG orders；3 LED luminescence units of the three or the three vitta shape LED chip arrange for GBR orders.
- A kind of 8. 6 times of frequency displaying methods of virtual LED based on three vitta shape LED chips, for driving such as claim 1~7 times Virtual LED display module described in one is virtually shown, it is characterised in that including：Define 6 kinds of scanning coordinates, including the first coordinate, the second coordinate, the 3rd coordinate, 4-coordinate, Five Axis, the 6th seat Mark；Divide the scan period of 6 sequential to each two field picture of input, including the first scan period, the second scan period, the Three scan periods, the 4th scan period, the 5th scan period, the 6th scan period；The display data of each corresponding scan period is generated according to the image pixel data of each two field picture；The display data is received, according to 6 kinds of scanning coordinates, scan periods, the virtual LED display module is driven It is dynamic.
- 9. display methods according to claim 8, it is characterised in that 6 kinds of scanning coordinates include：First coordinate, since the virtual LED display module upper left corner, by every a line adjacent 2 sub-pixels R, G with it is next Row 1 sub- pixel B adjacent thereto is triangle, and virtual display pixel is appeared on the right oblique line being made of all R primary colours； Remaining each sub-pixel forms 1/3rd virtual display pixels；Each sub-pixel is only using once；Second coordinate, since the virtual LED display module upper left corner, by every a line adjacent 2 sub-pixels G, B with it is next Row 1 sub-pixel R adjacent thereto is triangle, and virtual display pixel is appeared on the right oblique line being made of all G primary colours； Remaining each sub-pixel forms 1/3rd virtual display pixels；Each sub-pixel is only using once；3rd coordinate, since the virtual LED display module upper left corner, by 2 adjacent sub- pixel Bs of every a line, R with it is next Row 1 sub-pixel G adjacent thereto is triangle, and virtual display pixel is appeared on the right oblique line being made of all B primary colours； Remaining each sub-pixel forms 1/3rd virtual display pixels；Each sub-pixel is only using once；4-coordinate, since the virtual LED display module upper left corner, by every a line adjacent 1 sub-pixel G and next line 2 sub- pixel Bs, R adjacent thereto are triangle, and virtual display pixel is appeared on the right oblique line being made of all R primary colours； Remaining each sub-pixel forms 1/3rd virtual display pixels；Each sub-pixel is only using once；Five Axis, since the virtual LED display module upper left corner, by 1 adjacent sub- pixel B of every a line and next line 2 sub-pixels R, G adjacent thereto are triangle, and virtual display pixel is appeared on the right oblique line being made of all G primary colours； Remaining each sub-pixel forms 1/3rd virtual display pixels；Each sub-pixel is only using once；6th coordinate, since the virtual LED display module upper left corner, by every a line adjacent 1 sub-pixel R and next line 2 sub-pixels G, B adjacent thereto are triangle, and virtual display pixel is appeared on the right oblique line being made of all B primary colours； Remaining each sub-pixel forms 1/3rd virtual display pixels；Each sub-pixel is only using once.
- 10. display methods according to claim 8 or claim 9, it is characterised in that according to the image pixel of each two field picture The step of display data of each corresponding scan period of data generation, includes：According to the image pixel data of first coordinate and each two field picture, generation corresponding first scan period First display data；According to the image pixel data of second coordinate and each two field picture, generation corresponding second scan period Second display data；According to the image pixel data of the 3rd coordinate and each two field picture, generation corresponding 3rd scan period 3rd display data；According to the image pixel data of the 4-coordinate and each two field picture, generation corresponding 4th scan period 4th display data；According to the image pixel data of the Five Axis and each two field picture, generation corresponding 5th scan period 5th display data；According to the image pixel data of the 6th coordinate and each two field picture, generation corresponding 6th scan period 6th display data.
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| WO2023082346A1 (en) * | 2021-11-09 | 2023-05-19 | 深圳市奥拓电子股份有限公司 | Time division multiplexing led display driving method and chip thereof |
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