CN108230927A - Virtual LED display module and 3 times of frequency displaying methods based on three vitta shape LED chips - Google Patents
Virtual LED display module and 3 times of frequency displaying methods based on three vitta shape LED chips Download PDFInfo
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- CN108230927A CN108230927A CN201711484245.6A CN201711484245A CN108230927A CN 108230927 A CN108230927 A CN 108230927A CN 201711484245 A CN201711484245 A CN 201711484245A CN 108230927 A CN108230927 A CN 108230927A
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- 238000002360 preparation method Methods 0.000 description 6
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- 238000003860 storage Methods 0.000 description 5
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- 229910052682 stishovite Inorganic materials 0.000 description 4
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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]
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- General Physics & Mathematics (AREA)
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- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Control Of El Displays (AREA)
Abstract
The present invention relates to a kind of virtual LED display modules and 3 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；Spacing between two LED luminescence units of arbitrary neighborhood is equal；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 LED chip of RGB tri- colors one that the present invention is prepared totally using the luminescent material based on GaN material three kinds of colors, while improving physical resolution, is shown by 3 times of scanning realization virtual pixels, further improves image display resolution.
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 3 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.It influences
The key factor of LED display display effect has at 2 points：First, the resolution ratio of LED display；Second is that the display color of display screen
And tonal gradation.Generally using the high small space distance LED display screen of physical resolution, LED point spacing exists indoor LED display
P2.5 is hereinafter, mainly include 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 resolution ratio higher requirement always, it would be desirable to realize more
High display resolution.
Two kinds of approach can be used in the raising of display resolution：First, physical resolution is improved, second is that 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,
The limitation of LED pipe and electronic component encapsulation physical size and circuit complexity, of high cost etc. hinders display screen physical point
The raising of resolution.And virtually shown about sub-pix, show to increase pixel by virtually showing though having correlative study
Add 4 times, even higher times yupin effect, but increasing with frequency multiplication number, such as when frequency multiplication number reaches 10 times or more, and meeting
The phenomenon that display image is brought 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 ideal effect by virtual display.
Therefore a kind of display unit simple in structure, at low cost is found, and can more effectively improves display and differentiate
The technology of rate is always research hotspot at present in the industry.
Invention content
Therefore, to solve technological deficiency and deficiency of the existing technology, the present invention proposes a kind of based on three color bar-shaped LEDs
The virtual LED display module of chip and 3 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；Two LED of arbitrary neighborhood
Spacing between luminescence unit is equal；LED luminescence units in the first oblique line directions of M × N matrix are identical primary colours
LED luminescence units；LED luminescence unit of the LED luminescence units for three kinds of primary colours in the second oblique line directions of M × N matrix
It is arranged in turn by particular order.
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 3 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 set to 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 sequences
Row；3 LED luminescence units of the two or three vitta shape LED chip are ranked sequentially for GBR；3 of three or three vitta shape LED chip
LED luminescence units are ranked sequentially for BRG.
A kind of 3 frequency multiplication display side of virtual LED based on three vitta shape LED chips that an alternative embodiment of the invention provides
Method, for virtual LED display module to be driven virtually to be shown.3 times of frequency displaying methods of the virtual LED include：
3 kinds of scanning coordinates are defined, including the first coordinate, the second coordinate, third coordinate；
Is divided to each frame image of input, including the first scan period, the second scan period the scan period of 3 sequential
With the third scan period；
The display data of each corresponding scan period is generated according to the image pixel data of each frame image；
Display data is received, according to 3 kinds of scanning coordinates, scan periods, virtual LED display module is driven.
In one embodiment of the invention, 3 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 left oblique line being made of all G primary colours；
Remaining each sub-pixel forms 1/3rd virtual display pixels；Each sub-pixel only uses 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 left oblique line being made of all B primary colours；
Remaining each sub-pixel forms 1/3rd virtual display pixels；Each sub-pixel only uses once；
Third 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 left oblique line being made of all R primary colours；
Remaining each sub-pixel forms 1/3rd virtual display pixels；Each sub-pixel only uses once.
In one embodiment of the invention, according to each corresponding scanning of the image pixel data of each frame image generation
The step of display data in period, includes：
According to the image pixel data of the first coordinate and each frame image, the first display of corresponding first scan period is generated
Data；
According to the image pixel data of the second coordinate and each frame image, the second display of corresponding second scan period is generated
Data；
According to the image pixel data of third coordinate and each frame image, the third for generating the corresponding third scan period is shown
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 3 times of scannings to it using virtual display control circuit, realize empty
Intend pixel and show that visual density increases to 3 times, further significantly improves display resolution, the clarity for showing image
It is significantly improved, effectively improves display effect.
Through the following detailed description with reference to the accompanying drawings, other aspects of the invention and feature become apparent.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.
Description of the drawings
Below in conjunction with attached drawing, the specific 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 of 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 3 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 the virtual display of the virtual LED display module provided in an embodiment of the present invention based on three vitta shape LED chips
First coordinate schematic diagram of pixel distribution；
Fig. 8 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
Second coordinate schematic diagram of pixel distribution；
Fig. 9 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
The third coordinate schematic diagram of pixel distribution.
Specific 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
Specific 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 are ranked sequentially for RGB；The 3 of two or three vitta shape LED chip
A LED luminescence units are ranked sequentially for GBR；3 LED luminescence units of the three or three vitta shape LED chip are suitable for BRG
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 the spacing between two LED luminescence units of arbitrary neighborhood is equal；Positioned at the first oblique line of M × N matrix
LED luminescence units on direction are the LED luminescence units of identical primary colours；LED in the second oblique line directions of M × N matrix
Luminescence unit is arranged in turn for the LED luminescence units of three kinds of primary colours 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 left oblique line directions of M × N matrix are identical primary colours；Positioned at the right side of 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.
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 right 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 left oblique line directions are arranged in turn for the LED luminescence units of three kinds of primary colours by particular order.
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 units or 1 blue-ray LED unit.
The virtual LED display module 10 further includes virtual display control circuit 15, empty for LED display modules to be controlled 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 the embodiment of the present invention, the rule of all LED luminescence units composition of the virtual LED display module 10
Then in array, a sub-pixel of each LED luminescence unit as the virtual LED display module 10.Each LED shines list
Member and 2 LED luminescence units neighbouring around it can form 1 virtual display pixel, each virtual display pixel includes
There are 3 LED luminescence units, and respectively 3 kinds of primary colours, 3 LED luminescence units form triangle.The implementation of the present invention
In example, LED luminescence units B as shown in Figure 1 forms 3 virtual displays with totally 6 LED luminescence units neighbouring around it
Pixel P11, P12, P13, i.e. LED luminescence units B have carried out 3 times and have shared, and correspondingly, virtual display control circuit 15 uses 3 times
Frequency scanning circuit carries out 3 frequency multiplication scannings to LED display modules, is produced around the practical sub-pixel of virtual LED display module
With the virtual pixel of 3 times of regularly arranged quantity of array way so that display resolution significantly improves, and image shows more clear
It is clear.Because of the virtual LED display module of the embodiment of the present invention, the LED luminescence units arrangement of identical primary colours is in alignment, so
When carrying out 3 frequency multiplication scanning, although virtual display control circuit 15 increases scanning times, wiring but shows mould than tradition
Group will simplify very much.
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 in addition to horizontal positioned using mode shown in Fig. 1, with every three behaviors a cycle carry out it is regularly arranged except, can also be by three colors
Bar-shaped LED chip is placed vertically, is arranged, and then can also realize the high-resolution of 3 frequencys multiplication for a cycle with every three row
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 based on GaN
The LED chip of RGB tri- colors one that material is prepared altogether using the luminescent material of three kinds of colors.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 are ranked sequentially for RGB.
In each LED luminescence units surrounding filled with isolated substance, 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.It is 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, 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, it
In the array for ensureing three-color LED chipset 11, the spacing between two LED luminescence units of arbitrary neighborhood is equal.Therefore, it is 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 meeting chipset packaging technology level and allowing, make adjacent core as possible
Space D between piece1And D2Value accomplish minimum, also, d1、d2、d3、d4、d5And d6Value also take a smaller value as possible,
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, 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 on each LED luminescence units, N-type electrode is set to each LED luminescence units
N-type end, P-type electrode is set to 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
Schematic diagram, the two or three vitta shape LED chip and the structure of the three or three vitta shape LED chip and the one or three vitta shape LED chip are 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 is ranked sequentially for GBR, and 3 LED luminescence units of the three or three vitta shape LED chip are ranked sequentially for BRG.
Referring to Fig. 3, Fig. 3 is the structure diagram of 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 set as 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 set to each LED and shine
Multiple P-type electrodes of all LED luminescence units are set as a public P-type electrode by the p-type end of unit, are arranged on this
The p-type end of three vitta shape LED chips 30, multiple N-type electrodes are independently set to 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 is provided with public P-type electrode 34 at 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
Around luminescence unit separation layer is formed between two adjacent LEDs luminescence unit filled with isolated substance.
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 light emitting structure.
The material of blue-ray LED light emitting structure includes GaN material.Specifically, it is sequentially prepared the first GaN bufferings 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 slot on monochromatic light emitting structure, and preparing red-light LED in feux rouges wick slot 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
Range, 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 etches the upper of the first p-type GaN layer upper surface and substrate using dry etch process
2nd SiO on surface2Layer is in the first SiO of the side wall of the first groove formation2Separation layer, for be isolated blue light emitting structure with it is red
Light light emitting structure so far forms feux rouges wick slot.
The 2nd GaN buffer layers, the second N-shaped GaAs buffer layers, the second N-shaped GaAs is sequentially prepared in feux rouges wick slot 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 slot, finally prepares 1 red-light LED light emitting structure.
404, etching forms green light wick slot in dual color light emitting structure, and green LED is prepared in green light wick slot
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
Range, 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 in the 2nd SiO of the side wall of the second groove formation2Separation layer, for red light-emitting structure, blue light to be isolated
Light emitting structure and green luminescence structure so far form green light wick slot.
The 3rd GaN buffer layers, the 3rd GaN stabilized zones, third n-type GaN layer, third are sequentially prepared in green light wick slot
InGaN/GaN multiple quantum well active layers, third p-type AlGaN barrier layers, third p-type GaN layer.Wherein, third 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 slot, 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 sequence 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 light emitting structure and the luminescence window of 1 blue light emitting structure are equal in magnitude, equidistantly arrange.
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 slot on each light emitting 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 GBR, tri- vitta shape LED chips, tri- vitta shape LED chips of the 3rd BRG.
In conclusion according to the preparation method of the embodiment of the present invention, the LED chip of three colors one can be prepared, the chip
The light of multiple color can be generated 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 is shown for virtual LED 3 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 includes the following steps：
501, define 3 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 altogether comprising 54 primary colours luminescence units
6 × 9 matrix arrangements, i.e. 54 sub-pixels, every 3 sub-pixels form a display pixel, form 18 display pixels altogether.This 6
The horizontal and vertical LED luminescence units of × 9 matrixes are ranked sequentially according to RGB, and the LED luminescence units in left oblique line directions
LED luminescence units for identical primary colours.Each LED luminescence units carry out 3 times it is shared, shine list with 6 LED neighbouring around it
Member can form 3 virtual display pixels, and such as LED luminescence unit B, 3 are formed with totally 6 LED luminescence units neighbouring around it
Virtual display pixel P61, P62, P63.In this way, the virtual display pixel quantity generated on 6 × 9 matrix shares 5 × 8=40
It is a, about 3 times of actual displayed pixel number.
Referring to Fig. 7, Fig. 7 is the virtual of the LED display modules provided in an embodiment of the present invention based on three vitta shape LED chips
First coordinate schematic diagram of display pixel distribution.Since the virtual LED display module upper left corner, by 2 adjacent sons of every a line
Pixel R, G and next line it is adjacent thereto 1 sub- pixel B it is triangle, virtual display pixel is appeared in by all G primary colours structures
Into left oblique line on；Remaining each sub-pixel forms 1/3rd virtual display pixels；Each sub-pixel only uses one
It is secondary.
Referring to Fig. 8, Fig. 8 is the virtual LED display module provided in an embodiment of the present invention based on three vitta shape LED chips
Second coordinate schematic diagram of virtual display pixel distribution.Since the virtual LED display module upper left corner, by every a line it is adjacent 2
A sub-pixel G, B and next line it is adjacent thereto 1 sub-pixel R it is triangle, virtual display pixel is appeared in by all B bases
On the left oblique line that color is formed；Remaining each sub-pixel forms 1/3rd virtual display pixels；Each sub-pixel only makes
With primary.
Referring to Fig. 9, Fig. 9 is the virtual LED display module provided in an embodiment of the present invention based on three vitta shape LED chips
The third coordinate schematic diagram of virtual display pixel distribution.Since the virtual LED display module upper left corner, by every a line it is adjacent 2
A sub- pixel B, R and next line it is adjacent thereto 1 sub-pixel G it is triangle, virtual display pixel is appeared in by all R bases
On the left oblique line that color is formed；Remaining each sub-pixel forms 1/3rd virtual display pixels；Each sub-pixel only makes
With primary.
502, the scan period of 3 sequential is divided to each frame image of input, 3 scan periods include the equal time
Section.
503, the display data of each corresponding scan period is generated according to the image pixel data of each frame image；
According to the image pixel data of the first coordinate and each frame image, the first display of corresponding first scan period is generated
Data；
According to the image pixel data of the second coordinate and each frame image, the second display of corresponding second scan period is generated
Data；
According to the image pixel data of third coordinate and each frame image, the third for generating the corresponding third scan period is shown
Data.
504, display data is received, according to the scanning coordinate, scanning sequence and period 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 3 scanning, image is completed empty
Intend display；It is right again successively after 3 virtual displays of scanning completion are carried out to a frame image if the data source of input is video
Next frame image carries out 3 scanning, is finally completed and the high-resolution of video data is virtually shown.
3 times of frequency displaying methods of virtual LED based on three vitta shape LED chips through the embodiment of the present invention, using three colors
The LED chip of one, realizes smaller spacing, then the method shared by sub-pixel, originally 18 display pixels, can be with
Form 40 virtual display pixels.Sub-pixel positioned at virtual LED display module edge position generally can not achieve 3 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 3 times.Therefore, the method for the embodiment of the present invention makes the clarity that image is shown 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 to be shown to the present invention is based on the virtual LEDs of three vitta shape LED chips
Module and 3 times of frequency displaying methods are expounded, 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, thought according to the present invention in specific embodiment and is answered
With there will be changes in range, in conclusion the content of the present specification should not be construed as limiting the invention, it is of the invention
Protection domain should be subject to appended claim.
Claims (10)
1. a kind of virtual LED display module based on three vitta shape LED chips, which is characterized 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；
Spacing between the LED luminescence units of arbitrary neighborhood two is equal；
The LED luminescence units in the first oblique line directions of the M × N matrix are the LED luminescence units of identical primary colours；
LED luminescence unit of the LED luminescence units for three kinds of primary colours in the second oblique line directions of the M × N matrix
It is arranged in turn by particular order.
2. virtual LED display module according to claim 1, which is characterized in that the virtual LED display module further includes
Virtual display control circuit, for the virtual LED display module to be controlled virtually to be shown.
3. virtual LED display module according to claim 2, which is characterized in that the virtual display control circuit is 3 times
Frequency scanning circuit.
4. virtual LED display module according to claim 1, which is characterized 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, which is characterized 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, which is characterized in that the three vittas shape LED chip also wraps
It includes：
1 the first public electrode is set to 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, which is characterized 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 are ranked sequentially for RGB；
3 LED luminescence units of the two or the three vitta shape LED chip are ranked sequentially for GBR；
3 LED luminescence units of the three or the three vitta shape LED chip are ranked sequentially for BRG.
8. a kind of 3 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, which is characterized in that including：
3 kinds of scanning coordinates are defined, including the first coordinate, the second coordinate and third coordinate；
The scan period of 3 sequential is divided to each frame image of input, including the first scan period, the second scan period and the
Three scan periods；
The display data of each corresponding scan period is generated according to the image pixel data of each frame image；
The display data is received, according to 3 kinds of scanning coordinates, scan periods, the virtual LED display module is driven
It is dynamic.
9. display methods according to claim 8, which is characterized in that 3 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 left oblique line being made of all G primary colours；
Remaining each sub-pixel forms 1/3rd virtual display pixels；Each sub-pixel only uses 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 left oblique line being made of all B primary colours；
Remaining each sub-pixel forms 1/3rd virtual display pixels；Each sub-pixel only uses once；
Third 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 left oblique line being made of all R primary colours；
Remaining each sub-pixel forms 1/3rd virtual display pixels；Each sub-pixel only uses once.
10. display methods according to claim 8 or claim 9, which is characterized in that according to the image pixel of each frame image
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 frame image, generation corresponding first scan period
First display data；
According to the image pixel data of second coordinate and each frame image, generation corresponding second scan period
Second display data；
According to the image pixel data of the third coordinate and each frame image, the generation corresponding third scan period
Third display data.
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