CN108807458A - Dot structure, the OLED display screen comprising the dot structure, vapor deposition mask plate - Google Patents

Dot structure, the OLED display screen comprising the dot structure, vapor deposition mask plate Download PDF

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Publication number
CN108807458A
CN108807458A CN201710294880.1A CN201710294880A CN108807458A CN 108807458 A CN108807458 A CN 108807458A CN 201710294880 A CN201710294880 A CN 201710294880A CN 108807458 A CN108807458 A CN 108807458A
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pixel
sub
vapor deposition
dot structure
adjacent
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CN108807458B (en
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文国哲
余珺
胡小叙
叶訫
朱修剑
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Kunshan Guoxian Photoelectric Co Ltd
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Kunshan Guoxian Photoelectric Co Ltd
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    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10KORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/30Devices specially adapted for multicolour light emission
    • H10K59/35Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels
    • H10K59/353Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels characterised by the geometrical arrangement of the RGB subpixels
    • CCHEMISTRY; METALLURGY
    • C23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C14/00Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/04Coating on selected surface areas, e.g. using masks
    • C23C14/042Coating on selected surface areas, e.g. using masks using masks
    • C23C14/044Coating on selected surface areas, e.g. using masks using masks using masks to redistribute rather than totally prevent coating, e.g. producing thickness gradient
    • CCHEMISTRY; METALLURGY
    • C23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C14/00Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/22Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
    • C23C14/24Vacuum evaporation
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10KORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K71/00Manufacture or treatment specially adapted for the organic devices covered by this subclass

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Electroluminescent Light Sources (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

The present invention provides a kind of dot structure, the OLED display screen comprising the dot structure, vapor deposition mask plates.The length-width ratio of the dot structure sub-pixel is set smaller than 1.5:1 (i.e. the shape of sub-pixel is square or close square), it can ensure that opening is maximum, accordingly, in order to ensure that sub-pixel is square or approaches square, convert traditional four pixel units (12 sub-pixels) to three pixel units (9 sub-pixels), and, the luminous zone of the sub-pixel of same color mutually staggers in adjacent odd-numbered line and even number line, vapor deposition on vapor deposition mask plate, which is open, to be staggered arrangement, the intensity of vapor deposition mask plate can be improved, avoid vapor deposition mask plate stick up by, the problems such as fracture, reduction vapor deposition film layer is dizzy to be opened, the defect of the influences such as offset vapor deposition quality.Further, the first sub-pixel, the second sub-pixel and third sub-pixel shape and size all same, the interval being deposited on mask plate is identical, can further increase the intensity of vapor deposition mask plate.

Description

Dot structure, the OLED display screen comprising the dot structure, vapor deposition mask plate
Technical field
The present invention relates to display technology field, more particularly to a kind of dot structure, the OLED comprising the dot structure are aobvious Display screen, vapor deposition mask plate.
Background technology
OLED (Organic Light-Emitting Diode, Organic Light Emitting Diode) is active luminescent device.With biography LCD (Liquid Crystal Display, liquid crystal display) display mode of system is compared, and OLED display technologies are not necessarily to backlight, With self luminous characteristic.OLED use relatively thin organic material film laye and glass substrate, when have electric current by when, organic material It will shine.Therefore OLED display screen can save significantly on electric energy, can be made lighter and thinner, be resistant to than LCD display wider The temperature change of range, and visible angle bigger.OLED display screen is expected to become the next-generation FPD skill after LCD Art is most one of technology that attracts attention in current flat panel display.
There are many kind, the present more mature and volume production that succeeded OLED colorization skills for the colorization method of OLED screen body Art is mainly OLED evaporation coating techniques, and traditional RGB Stripe (RGB stripe shape) arrangement mode is used to be deposited.Wherein picture The mode of effect most preferably side-by-side (juxtaposition).Side-by-side modes are in pixel (Pixel) range Inside there are three sub-pixels (sub-pixel) of red, green, blue (R, G, B), each sub-pixel to be rectangle, and respectively has independent Organic light emission component, it be using evaporation film-forming technology through fine metal mask version (Fine Metal Mask, FMM) corresponding location of pixels forms organic light emitting component, the fine metal mask version on array (array) substrate Mask plate is often referred to simply as deposited.The OLED for making high PPI (Pixel Per Inch, the number of pixels that per inch is possessed) is aobvious The technology of display screen focuses on the fine and FMM of good mechanical stability and the arrangement mode of pixel.
Fig. 1 is a kind of pixel arrangement schematic diagram of OLED display screen in the prior art.Industry is usually by this kind of dot structure Referred to as Real RGB.As shown in Figure 1, the OLED display screen uses the juxtaposed mode of pixel, each pixel unit Pixel includes R Subpixel area 101, G sub-pixel region 103 and B subpixel areas 105, wherein R subpixel areas 101 include the luminous zones R The non-light-emitting areas 102 and R, G sub-pixel region 103 include the luminous zones G 104 and the non-light-emitting areas G, and B subpixel areas 105 include The luminous zones B 106 and the non-light-emitting areas B.R, G, B sub-pixel shown in Fig. 1 are rectangle and luminous zone area equation, and R, G, B sub-pixels are arranged in a linear.In the luminous zone of each subpixel area, including cathode, anode and electroluminescence layer are (also known as For organic emission layer), wherein electroluminescence layer is aobvious to realize for generating predetermined color light between cathode and anode Show.When preparing display screen, it usually needs using evaporation process three times with respectively in the luminous zone of corresponding color pixel region Form the electroluminescence layer of corresponding color.
The dot structure generally use FMM shown in Fig. 2 of OLED display screen shown in FIG. 1 is deposited, this kind of FMM includes Blocked area 107 and several vapor deposition openings 108, two adjacent blocked areas being deposited between opening 108 of same row are referred to as Connecting bridge (bridge).Since the sub-pixel of same color in the arrangement mode of Fig. 1 is upper and lower contraposition setting, FMM's Vapor deposition opening 108 must also align setting, this makes longitudinally adjacent two that the connecting bridge (bridge) between opening 108 be deposited Risk with broken string.Also, the vapor deposition opening 108 of FMM needs to correspond to scheduled location of pixels, according to this existing one kind Pixel arrangement mode, FMM and sub-pixel area can reduce bit space, it is possible to produce lack the defect of color or colour mixture.
Invention content
The purpose of the present invention is to provide a kind of dot structure driving methods, to solve problems of the prior art.
In order to solve the above technical problems, the present invention provides a kind of dot structure, including multiple pixel columns, each pixel column packet Include the first sub-pixel, the second sub-pixel and third sub-pixel for being repeated in arrangement, same color in adjacent two odd-numbered lines Sub-pixel luminous zone between facing each other, phase between the luminous zone of the sub-pixel of same color in two adjacent even number lines Mutual face, the luminous zone of the sub-pixel of same color mutually staggers in adjacent odd-numbered line and even number line, first sub-pixel, The shape of second sub-pixel and third sub-pixel is rectangular and length-width ratio is less than 1.5:1.
Optionally, in the dot structure, first sub-pixel, the second sub-pixel and third sub-pixel shape It is identical with size, with third most adjacent in the boundary line of the first sub-pixel and the second sub-pixel adjacent in a line and adjacent rows Sub-pixel is overlapped along the center line that column direction extends, and first sub-pixel, the second sub-pixel and third sub-pixel are square Or rectangle.
Optionally, in the dot structure, each first sub-pixel, the second sub-pixel and third sub-pixel In, adjacent two sides are connected by several camber lines and/or several straight lines.
Optionally, in the dot structure, first sub-pixel, the second sub-pixel and third sub-pixel color One kind in respectively red, blue and green, and first sub-pixel, the second sub-pixel, the color of third sub-pixel are mutual It differs.
The present invention also provides a kind of OELD display screens, including dot structure as described above.
The present invention provides a kind of vapor deposition mask plate again, includes the vapor deposition opening of multiple array arrangements, adjacent two odd numbers Vapor deposition opening in row is facing each other, the vapor deposition opening in two adjacent even number lines odd-numbered line and idol facing each other, adjacent Vapor deposition opening in several rows mutually staggers, and the shape of the vapor deposition opening is that rectangular and length-width ratio is less than 1.5:1.
Optionally, in the vapor deposition mask plate, the vapor deposition opening is square or rectangle, the vapor deposition opening In adjacent two sides pass through several camber lines and/or the connection of several straight lines.
Compared with prior art, the present invention by the length-width ratio of sub-pixel by being set smaller than 1.5:1 (the i.e. shape of sub-pixel Shape is square or close square), it is ensured that opening is maximum, correspondingly, in order to ensure that sub-pixel is square or approaches Square converts traditional four pixel units (12 sub-pixels) to three pixel units (9 sub-pixels), also, phase The luminous zone of the sub-pixel of same color mutually staggers in adjacent odd-numbered line and even number line, and the vapor deposition opening being deposited on mask plate is Be staggered arrangement, can be improved vapor deposition mask plate intensity, avoid vapor deposition mask plate stick up by, fracture the problems such as, reduce be deposited Film layer is dizzy the defect that quality is deposited in influences such as to open, deviate.Further, the first sub-pixel, the second sub-pixel and third sub-pixel Shape and size all same, the interval being deposited on mask plate is identical, can further increase the intensity of vapor deposition mask plate.
Description of the drawings
Fig. 1 is a kind of dot structure schematic diagram in the prior art.
Fig. 2 is the schematic diagram of FMM of corresponding diagram 1 a kind of.
Fig. 3 is a kind of dot structure schematic diagram in one embodiment of the invention.
Fig. 4 is the schematic diagram of FMM of corresponding diagram 3 a kind of.
Fig. 5 is another dot structure schematic diagram in one embodiment of the invention.
Fig. 6 is another dot structure schematic diagram in one embodiment of the invention.
Fig. 7 is another dot structure schematic diagram in one embodiment of the invention.
Fig. 8 is a kind of dot structure schematic diagram in one embodiment of the invention.
Fig. 9 is the dot structure schematic diagram that grid line and data line are connected in one embodiment of the invention.
Figure 10 is the equivalent schematic of a theory pixel cells group in one embodiment of the invention.
Figure 11 is the equivalent schematic of four theory pixel cells groups in one embodiment of the invention.
Figure 12 undertakes the schematic diagram of color component for a kind of dot structure in one embodiment of the invention.
Figure 13 is the equivalent schematic of dot structure in Figure 12.
Figure 14 is the schematic diagram that another dot structure undertakes color component in one embodiment of the invention.
Figure 15 is the equivalent schematic of dot structure in Figure 14.
Specific implementation mode
As stated in the background art, the technology for making the OLED display screen of high PPI focuses on fine and good mechanical stability FMM and pixel arrangement mode.FMM be deposited pixel in key element, should stick up as little as possible by, fracture etc. ask Topic avoids causing the dizzy defect influences such as opening, deviate and quality is deposited of vapor deposition film layer.And the arrangement mode of pixel and sub-pixel is to determine Determine whether FMM is easy to happen warpage and major cause of failure.That is, the arrangement mode of pixel and sub-pixel largely determines The mechanical performance of FMM, the mechanical performance of FMM largely determine the quality of vapor deposition.FMM as shown in Figure 2 is in a certain face The position of the sub-pixel of color is correspondingly arranged vapor deposition opening, due to the sub-pixel of same color in the Real RGB arrangement modes of Fig. 1 It is upper and lower contraposition setting, therefore the vapor deposition opening 108 of FMM must also align setting, mask plate makes and the difficulty of evaporation process It spends larger.
Based on the studies above, the present invention provides a kind of dot structure of OLED display screen, which includes multiple pictures Plain row (also referred to as arranging), each pixel row (column) include multiple sub-pixels, and the multiple sub-pixel includes the row of being repeated in The first sub-pixel, the second sub-pixel and the third sub-pixel of row, first sub-pixel, the second sub-pixel and third sub-pixel The shape of luminous zone is that length-width ratio is less than 1.5:1 rectangular, the sub-pixel of same color in two adjacent odd number row (column) Luminous zone between arrangement facing each other, in adjacent two even number row (column) between the luminous zone of the sub-pixel of same color also Arrangement facing each other, also, in adjacent odd number row (column) and even number row (column) the sub-pixel of same color luminous zone phase Mutually it is staggeredly arranged.The length-width ratio (the ratio between long side length and bond length) of sub-pixel is set smaller than 1.5 by the present invention:1 is (i.e. sub The shape of pixel is square or close square), it is ensured that opening is maximum, correspondingly, in order to ensure that sub-pixel is square Shape or close square, convert traditional four pixel units (12 sub-pixels) to three pixel units (9 sub-pixels). Also, the luminous zone of the sub-pixel of same color mutually staggers in adjacent odd-numbered line and even number line, and the steaming on mask plate is deposited Plating opening is staggered arrangement, and the intensity of vapor deposition mask plate can be improved, avoid vapor deposition mask plate stick up by, be broken the problems such as, The dizzy defect of the influences vapor deposition quality such as opening, deviate of vapor deposition film layer is reduced, mask plate is reduced and makes and the difficulty of evaporation process.
For this purpose, the present invention also provides a kind of dot structure driving method, image to be shown is divided into several theoretical pictures Plain unit group, each theory pixel cells group include four benchmark pixel units, and each benchmark pixel unit includes three juxtapositions The sub-pixel of arrangement determines the color component of each sub-pixel in theory pixel cells group;If the dot structure is divided into Dry object pixel unit group, each object pixel unit group are equivalent to a theory pixel cells group, each object pixel unit Group includes three object pixel units, and each object pixel unit includes three sub-pixels, according to every in theory pixel cells group The color component of one sub-pixel determines the color component of each sub-pixel in object pixel unit group, wherein object pixel unit The color component of at least one sub-pixel is the color component of two sub-pixels of corresponding color in theory pixel cells group in group Maximum value or average value.With this pixel knot is realized on the basis of by four pixel unit boil down tos, three pixel units The driving of structure.
Below in conjunction with attached drawing, invention is further described in detail.According to following explanation and claims, the present invention The advantages of and feature will become apparent from.
Fig. 3 is the pixel arrangement schematic diagram of OLED display screen in one embodiment of the invention.Wherein, X-direction refers to each picture The extending direction of plain row, also known as line direction (transverse direction);Y-direction refers to the direction perpendicular with X-direction, also referred to as column direction (longitudinal direction).When the size of the luminous zone of sub-pixel in the row direction is less than the size on column direction, column direction is referred to as sub- picture The length direction of element, line direction are referred to as the width direction of sub-pixel, and " length of sub-pixel " refers to that the luminous zone of sub-pixel exists Size on the column direction, " width of sub-pixel " refer to size of the luminous zone of sub-pixel on the line direction.Work as sub-pixel Luminous zone size in the row direction when being more than the size on column direction, line direction is referred to as the length direction of sub-pixel, row Direction is referred to as the width direction of sub-pixel, and " length of sub-pixel " refers to ruler of the luminous zone of sub-pixel on the line direction Very little, " width of sub-pixel " refers to size of the luminous zone of sub-pixel on the column direction." length-width ratio of sub-pixel " refers to then The ratio between full-size in the full-size and width direction of the luminous zone of sub-pixel in the longitudinal direction.
In addition, for simplicity, a part for OLED display screen is only indicated in attached drawing, pixel quantity is unlimited in actual product In this, the quantity of pixel unit can need to make corresponding variation according to actual displayed.Heretofore described the first row, the second row, First row, secondary series ... are to illustrate the invention and as shown in the figure for reference standard, to be not necessarily referring in actual product Row and column.
As shown in figure 3, the dot structure 300 of OLED display screen includes multiple pixel columns, each height in the dot structure Pixel is in the arrangement mode of juxtaposition (side-by-side), and each pixel column includes the first sub-pixel for being repeated in arrangement 301, the second sub-pixel 303 and third sub-pixel 305, in adjacent two odd-numbered lines the luminous zone of the sub-pixel of same color it Between arrangement facing each other, between the luminous zone of the sub-pixel of same color be also cloth facing each other in adjacent two even number lines It sets, but the arrangement that misplaces between the luminous zone of the sub-pixel of same color in odd-numbered line and even number line.In other words, in all odd-numbered lines Sub-pixel arrangement mode it is identical, the arrangement mode of the sub-pixel in the even number line is also identical, however odd-numbered line and even number The luminous zone of the sub-pixel of row same color is not corresponding up and down, and is offset from each other (displacement) arrangement.
In the present embodiment, the first sub-pixel 301, the second sub-pixel 303 and third sub-pixel 305 luminous zone shape and Size all same, with most adjacent in the first sub-pixel 301 adjacent in a line, the boundary line of the second sub-pixel 303 and adjacent rows The center line that extends along column direction of luminous zone of third sub-pixel 305 overlap, with this so that RGB sub-pixels are evenly distributed, tool There is preferable display effect.(305 ' edge of center line of center line 305 ' detailed, that third sub-pixel 305 extends along column direction Column direction extends and third sub-pixel 305 is divided into two parts by the center line 305 ') and the first sub-pixel 301 and the second sub-pixel 303 boundary line overlaps.In other words, in above-mentioned arrangement mode, sub-pixel (the such as first son of odd-numbered line and even number line same color Pixel 301) 1.5 arrangement of subpixels of dislocation, that is, the hair of two sub-pixels of the immediate same color in position in adjacent rows Distance in the direction of the width between light class mark is the width of 1.5 sub-pixels, immediate identical with position in a line The distance between midpoint of two sub-pixels of color is the width for being separated by 3 sub-pixels.It is understood that due to same picture The first sub-pixel 301 and the second sub-pixel 303 in plain unit share a line, which is the first sub-pixel 301 With the boundary line of the second sub-pixel 303, still, " boundary " or " boundary line " herein be not limited to entity " boundary " or " boundary line ", and can refer to " boundary " or " boundary line " between two pixel sub-pixels virtually.It should be noted that although Most adjacent third sub-pixel 305 is along row on the boundary line of adjacent the first sub-pixel 301, the second sub-pixel 303 and adjacent rows When the center line that direction extends overlaps, arrangement effect is preferable, but, the son of actually adjacent odd-numbered line and even number line same color The size of pixel shift is not strictly limited to 1.5 sub-pixels, for example is still to allow in 1.4~1.6 sub- pixel coverages 's.
First sub-pixel 301, the second sub-pixel 303, the color of third sub-pixel 305 are respectively red, green, blue Color any of which, and the first sub-pixel 301, the second sub-pixel 303,305 color of third sub-pixel is different.For example, Fig. 3 In, the first sub-pixel 301 is green (G) sub-pixel, the second sub-pixel 303 is blue (B) sub-pixel, third sub-pixel 305 is Red (R) sub-pixel, in this way, in odd-numbered line, cycle arrangement in the way of multiple sub-pixels are by G, B, R, G, B, R ..., even number In row, multiple sub-pixels by R, G, B, R, G, B ... in the way of cycle arrangement.Certainly, the first sub-pixel 301 can be indigo plant Sub-pixels or red sub-pixel, the second sub-pixel 303 can be green sub-pixels or red sub-pixel, third sub-pixel 305 Can be green sub-pixels or blue subpixels, as long as the first sub-pixel 301, the second sub-pixel 303, third sub-pixel 305 Color is different.
First sub-pixel 301, the second sub-pixel 303, third sub-pixel 305 include luminous zone (viewing area) and non- The luminous zone of luminous zone (non-display area), each sub-pixel includes that cathode, anode and electroluminescence layer (are also known as organic transmitting Layer), the electroluminescence layer is between cathode and anode, for generating predetermined color light to realize display.The present embodiment In, first sub-pixel 301 includes the luminous zones G 302, and the second sub-pixel 303 includes the luminous zones B 304, third sub-pixel 305 Including the luminous zones R 306, it usually needs using evaporation process three times to be formed in the luminous zone of corresponding color pixel region respectively The electroluminescence layer of corresponding color (such as red, green or blue).
Fig. 4 is the schematic diagram of FMM of dot structure shown in corresponding diagram 3 a kind of.As shown in figure 4, metal mask plate 400 has Multiple vapor deposition openings 408, vapor deposition opening 408 correspond to the sub-pixel of same color (such as green) in Fig. 3.Due to odd-numbered line It is not corresponding up and down with the pixel of even number line same color, and it is offset from each other (displacement) arrangement, thus, to form sub-pixel Vapor deposition mask plate (FMM) on vapor deposition opening be also to be staggered arrangement.From fig. 4, it can be seen that due to being staggeredly arranged, it is adjacent Nearest the distance between the two vapor deposition openings 408 of distance are increased in two rows, can be increased the intensity of FMM, be kept away as far as possible Exempt from the problems such as FMM is stuck up by, fracture, reduces the dizzy defect influences such as opening, deviate and quality is deposited of vapor deposition film layer.
Shown in Fig. 3, in the present embodiment, the first sub-pixel 301, the second sub-pixel 303 and third sub-pixel 305 Luminous zone be quadrangle, and the length-width ratio (the ratio between long side length and bond length) of the luminous zone of each sub-pixel is less than 1.5:1, that is, L2:L1 < 1.5:1.The length-width ratio of sub-pixel is set smaller than 1.5:1, it is ensured that opening is maximum, accordingly , in order to ensure sub-pixel be square or close to square, by four pixel units in traditional Real RGB arrangement modes It is converted into three pixel units of the present embodiment, that is, in the pel array of 3*3 shown in Fig. 3, the size of line direction is equivalent to The size of the size of 2 pixel units (2pixels) in Real RGB arrangement modes, column direction is also equivalent to Real RGB arrangements The size of 2 pixel units in mode, in other words, 9 sub-pixels are equivalent to 12 sub-pixels in the prior art in the present embodiment.
Preferably, the luminous zone of first sub-pixel 301, the second sub-pixel 303 and third sub-pixel 305 is pros Shape, that is, the length-width ratio (L2 of the luminous zone of each sub-pixel:L1 it is) 1:1, correspondingly, the vapor deposition opening 408 in Fig. 4 is also Square.Inventor the study found that the length-width ratio of the luminous zone of sub-pixel closer to 1:The length-width ratio of 1, FMM vapor deposition opening Closer to 1:1, then, FMM is less susceptible to that warpage occurs and fracture, the intensity of FMM are higher.
It should be understood, however, that the first sub-pixel 301, the second sub-pixel 303 and third sub-pixel 305 luminous zone shape Shape is not limited to square, can also be that length-width ratio is less than 1.5:1 rectangle, as shown in figure 5, the first sub-pixel 301, The L2 of two sub-pixels 303 and third sub-pixel 305 is more than L1, wherein the length-width ratio (L2 of rectangle sub-pixel:L1) can be 1.1:1,1.2:1,1.3:1,1.4:1 etc., as long as being less than 1.5:1 can obtain preferable effect.
Further it will be understood that in actual production, the true forms (and size) of various products and design shape (and Size) between allow that there are certain deviations.Generally, as long as the true form (and size) of product permits in design shape (and size) Perhaps in deviation range, requirement can be reached.For example, the first sub-pixel 301, the second sub-pixel 303 and third sub- picture The shape of the luminous zone of element 305 can also be the square either rectangle like of class such as approximate rectangle or approximate square Shape it is trapezoidal, for example, can be isosceles trapezoid or non-isosceles trapezoid, can be trapezoid, inverted trapezoidal, be rotated by 90 ° to the left It is trapezoidal or be rotated by 90 ° to the right trapezoidal.In a preferred approach, it is isosceles trapezoid that this is trapezoidal, and the upper bottom edge of the isosceles trapezoid is under The dimension difference on bottom edge is less than the 10% of bottom edge lengths, also, the waist of the isosceles trapezoid and the angle of upper bottom edge are more than 90 degree And it is less than 100 degree, and, the waist of the isosceles trapezoid and the angle of bottom are more than 80 degree and are less than 90 degree, in this way, the first sub- picture The shape of the luminous zone of plain 301, second sub-pixel 303 and third sub-pixel 305 is still generally rectangular shaped (in the deviation model of permission In enclosing), it still can get preferably arrangement effect.Further, when the first sub-pixel 301, the second sub-pixel 303 and third sub- picture When the shape of luminous zone of element 305 is trapezoid or inverted trapezoidal, the mean value of upper bottom edge length and the bottom length of side and it is trapezoidal it is high this Maximum value in two sizes is regarded as the size of trapezoidal length direction, mean value and trapezoidal height of the upper bottom edge length with the bottom length of side In minimum value be then regarded as the size of trapezoidal width direction, also, the size of trapezoidal length direction and trapezoidal width side To size ratio be less than 1.5.
On the other hand, as previously described, it is recognized that although the first sub-pixel 301, the second sub-pixel 303 and third sub- picture The best results when shape of the luminous zone of element 305 is square, but in actual production, it is ideal corner may not can be obtained Square, have some it is appropriate deformation in allowed limits.For example, adjacent two sides 3021,3022 can not be as Fig. 3, which is shown, to be directly connected to and is mutually perpendicular to, and can also be that (adjacent two sides 3021,3022 pass through curved line for arc connection Section 3023 connects), that is, square corner arc, as shown in Figure 6.For another example, adjacent two sides 3021,3022 also may be used Being connected by straight line section 3024 so that it is octagon that the quadrangle, which is expanded, as shown in fig. 7, only on the whole still It is that length-width ratio is less than 1.5:1 it is rectangular.Certainly, adjacent two sides 3021,3022 can also be to be connected by two straightways, So that it is dodecagon that the quadrangle, which is expanded,.As long as in short, the first sub-pixel 301, the second sub-pixel 303 and third sub-pixel The shape of 305 luminous zone is square on the whole, and the rectangular length-width ratio is less than 1.5, and the purpose of the present invention can be achieved.
In addition, according to actual design and production needs, dot structure shown in Fig. 4 can be rotated by 90 ° to the left or to the right, It is of course also possible to be rotation 180 degree.For example, Fig. 4 is rotated by 90 ° to the left, then dot structure as shown in Figure 8 is obtained.Such as Fig. 8 Shown, which includes multiple pixel columns, and each pixel column includes the first sub-pixel 301 for being repeated in arrangement, Two sub-pixels 303 and third sub-pixel 305, in adjacent two odd columns between the luminous zone of the sub-pixel of same color mutually Face arranges, between the luminous zone of the sub-pixel of same color is also arrangement facing each other in adjacent two even columns, but strange Misplace in ordered series of numbers and even column between the luminous zone of the sub-pixel of same color arrangement.In other words, the sub- picture in all odd columns The arrangement mode of element is identical, and the arrangement mode of the sub-pixel in the even column is also identical, however odd column is identical with even column The luminous zone of the sub-pixel of color is not corresponding up and down, and is offset from each other (displacement) arrangement.Compared with Fig. 4, row in Fig. 8 and Column direction is exchanged, and but, the length-width ratio of the luminous zone of each sub-pixel is still less than 1.5:1, preferably length-width ratio is 1:The length-width ratio of 1, FMM vapor deposition opening is closer to 1:1, then, FMM is less susceptible to that warpage and fracture, the intensity of FMM occurs It is higher.
According to the another aspect of the present embodiment, a kind of OLED display screen is also provided, any of the above-described kind of pixel knot may be used Structure.By using for dot structure 300 shown in Fig. 3, each pixel column connects a grid line in the dot structure 300, often A pixel column connects a data line.As shown in figure 9, multiple pixel columns be separately connected gate lines G 1, G2, G3 ..., multiple pictures Element row be separately connected grid line S1, S2, S3 ....Further, due to odd-numbered line and even number line phase in the dot structure 300 Luminous zone with the sub-pixel of color mutually staggers arrangement, thus data line can be in bending.
Shown in Fig. 9, the dot structure of the OLED display screen includes several object pixel unit group P0, each mesh Mark pixel unit group P0 is equivalent to a theory pixel cells group in Real rgb pixel structures.Each object pixel unit group P0 includes three object pixel units P1, P2, P3, and each object pixel unit includes 3 sub-pixels.Three object pixel units In, point-blank, third pixel unit P3 is arranged for first pixel unit P1 and second pixel unit P2 Alignments It is listed on another straight line.Sub-pixel distribution triangular in shape in first pixel unit P1 and second pixel unit P2, the Sub-pixel in three pixel unit P3 is linearly distributed, that is, pixel unit P1, P2 are triangular construction, and pixel unit P3 is Rectangular configuration.
Here, each object pixel unit group P0 includes 9 sub-pixels, so each object pixel unit group P0 connections 3 grid lines and 3 data lines.And in traditional Real RGB, in conjunction with shown in Figure 10, each theory pixel cells group includes 4 benchmark pixel units, each benchmark pixel unit include 3 sub-pixels, that is, each theory pixel cells group includes 12 Sub-pixel connects 2 grid lines and 6 data lines.In contrast, the present embodiment dot structure although connection grid line Quantity is more compared with the grid line quantity of Real RGB (for 1.5 times of the grid line quantity of Real rgb pixel structures), but it is connected Data line quantity it is few compared with the data line quantity of Real RGB (for the 50% of the data line quantity of RealRGB dot structures), show The signal wire quantity of display screen integrated connection tails off.
The present embodiment is directed to above-mentioned dot structure, also provides a kind of driving method, includes the following steps:
One image to be shown is divided into several theory pixel cells groups, each theory pixel cells group includes four battle arrays The benchmark pixel unit of column distribution, each benchmark pixel unit include the sub-pixel of three Alignments, and determine theoretical pixel The color component of each sub-pixel in unit group;And
Dot structure is divided into several object pixel unit groups, each object pixel unit group is equivalent to a theoretical picture Plain unit group, each object pixel unit group include the object pixel unit of three array distributions, each object pixel unit packet Three sub-pixels are included, and are determined in object pixel unit group according to the color component of theoretical sub-pixel in the theory pixel cells group The practical color component undertaken of each sub-pixel;Wherein, the color component of at least one sub-pixel is in object pixel unit group The maximum value or average value of the color component of two sub-pixels of corresponding color in theory pixel cells group.
It describes in detail to a kind of driving method in the present embodiment with reference to Figure 10 and Figure 11.
When showing an image, image to be shown is first divided by several theoretical pixel lists according to Real rgb pixels structure Tuple, then the dot structure is divided into several object pixel unit groups, each object pixel unit group is equivalent to a reason By pixel unit group.
Figure 10 is the equivalent schematic of a theory pixel cells group in one embodiment of the invention.Wherein, (a) is Real The schematic diagram of a theory pixel cells group in rgb pixel structure, (b) be the present embodiment dot structure in an object pixel The schematic diagram of unit group.
As shown in Figure 10 (a), theory pixel cells group includes four benchmark pixel unit P1 ', P2 ', P3 ', P4 ', each Benchmark pixel unit includes the R sub-pixels, G sub-pixel, B sub-pixels of three Alignments, in benchmark pixel unit P1 ', P2 ' Arrangement of subpixels in a line, benchmark pixel unit P3 ', P4 ' arrangement of subpixels on another row.Benchmark pixel unit P1 ' By gate lines G 1 ' and data line S1 ', S2 ', S3 ' controls, benchmark pixel unit P2 ' by gate lines G 1 ' and data line S4 ', S5 ', S6 ' is controlled, and benchmark pixel unit P3 ' is controlled by gate lines G 2 ' and data line S1 ', S2 ', S3 ', and benchmark pixel unit P4 ' is by grid Polar curve G2 ' and data line S4 ', S5 ', S6 ' controls.As can be seen that four benchmark pixel unit P1 ', P2 ', P3 ', P4 ' are length Square configuration.
As shown in Figure 10 (b), object pixel unit group includes three object pixel units P1, P2, P3, each object pixel Unit includes the R sub-pixels, G sub-pixel, B sub-pixels of three Alignments.Object pixel unit P1 is by gate lines G 1, G2 sum numbers It is controlled according to line S1, S2, object pixel unit P2 is controlled by gate lines G 1, G2 and data line S2, S3, and object pixel unit P3 is by grid Polar curve G3 and data line S1, S2, S3 control.As can be seen that object pixel unit P1, P2 are triangular construction, object pixel Unit P3 is rectangular configuration.
It determines in the theory pixel cells group after the color component of each sub-pixel, maps that goal theory pixel In unit.Specifically, in Figure 10, object pixel unit P1 undertakes the color component of benchmark pixel unit P1 ', object pixel unit P2 undertakes the color component of benchmark pixel unit P2 ', and object pixel unit P3 undertakes the color of benchmark pixel unit P3 ' and P4 ' Component.It is detailed, pixel unit P3 ' and P4 ' on the basis of at least one of object pixel unit P3 color components of sub-pixel In two corresponding colors sub-pixel color component maximum value or average value.
In Figure 11, (a) is the schematic diagram of four theory pixel cells groups in Real rgb pixel structures, (b) is this implementation The schematic diagram of four object pixel unit groups in the dot structure of example.
It, will be red in the benchmark pixel unit P1 ' of the first row first row in theory pixel cells group as shown in Figure 11 (a) Sub-pixels are denoted as R11, and green sub-pixels are denoted as G11, and blue subpixels are denoted as B11;By the benchmark pixel of the first row secondary series Red sub-pixel in unit P2 ' is denoted as R12, and green sub-pixels are denoted as G12, and blue subpixels are denoted as B12;By the second row first Red sub-pixel in the benchmark pixel unit P3 ' of row is denoted as R21, and green sub-pixels are denoted as G21, and blue subpixels are denoted as B21; Red sub-pixel in the benchmark pixel unit P4 ' of second row secondary series is denoted as R22, green sub-pixels are denoted as G22, blue Pixel is denoted as B22, and so on.
When actual displayed, object pixel unit P1 is equivalent to benchmark pixel unit P1 ', and red is sub in object pixel unit P1 Pixel undertakes the color component of red sub-pixel R11 in benchmark pixel unit P1 ', and object pixel unit P1 Green sub-pixels are held The color component of benchmark pixel unit P1 ' Green sub-pixels G11 is carried on a shoulder pole, blue subpixels undertake benchmark in object pixel unit P1 The color component of blue subpixels B11 in pixel unit P1 '.Meanwhile object pixel unit P2 is equivalent to benchmark pixel unit Red sub-pixel undertakes the color component of red sub-pixel R12 in benchmark pixel unit P2 ', mesh in P2 ', object pixel unit P2 Mark pixel unit P2 Green sub-pixels undertake the color component of benchmark pixel unit P2 ' Green sub-pixels G12, object pixel Blue subpixels undertake the color component of the blue subpixels B12 in benchmark pixel unit P2 ' in unit P2.
Since three pixel units need to undertake in benchmark pixel unit group four pixel units in object pixel unit group Color component, so, object pixel unit P3 is equivalent to benchmark pixel unit P3 ' and P4 '.A kind of mode is benchmark pixel The maximum value of the color component of the sub-pixel of two corresponding colors in unit P3 ' and P4 ', corresponding color in object pixel unit P3 The color component of sub-pixel be equivalent to the maximum value, for example, in object pixel unit P3 red sub-pixel color component etc. Maximum value, object pixel unit P3 Greens in two red sub-pixels R21, R22 in pixel unit P3 ' and P4 ' on the basis of effect The color component of sub-pixel is equivalent in benchmark pixel unit P3 ' and P4 ' maximum value, mesh in two green sub-pixels G21, G22 The color component of blue subpixels is equivalent to two blue subpixels in benchmark pixel unit P3 ' and P4 ' in mark pixel unit P3 Maximum value in B21, B22.Another way is to obtain the face of the sub-pixel of two corresponding colors in benchmark pixel unit P3 ', P4 ' The average value of colouring component, the color component of the sub-pixel of corresponding color is equivalent to the average value in object pixel unit P3.
Above-mentioned driving process can be controlled by the driving chip (Drive IC) of display screen, compare the number of two sub-pixels by it According to the size of voltage to judge the size of the color component of two sub-pixels, to which control targe pixel unit sub-pixel is to manage It is shown by the maximum value in the color component of two sub-pixels of corresponding color in pixel unit group.It similarly, can also be by the drive Dynamic chip calculates the average value of the color component of two sub-pixels, to which control targe pixel unit sub-pixel is with theoretical pixel The average value of the color component of two sub-pixels of corresponding color is shown in unit group.
Further, as shown in Figure 11 (b), the construction of two adjacent object pixel unit groups is identical on column direction, and It is identical after the construction overturning 180 degree of two adjacent object pixel unit groups on line direction, that is, object pixel unit group The pixel unit (such as P1 and P2) of two triangular constructions above, the pixel unit of rectangular configuration (such as P3) in lower section, and The pixel units of two triangular constructions on its line direction in adjacent object pixel unit group is in lower section, rectangular configuration Pixel unit is then above.Thus, in adjacent object pixel unit group, need to be equivalent to two benchmark pixel units The sub-pixel of object pixel unit is distributed in do not go together on.
The present invention can also do some variations for the construction of pixel unit.With reference to Figure 12 and Figure 13 in the present embodiment Another driving method describes in detail.
As shown in figure 13, in object pixel unit group, the sub-pixel of one row of one row of centre and centre needs to undertake two bases The color component of corresponding color sub-pixel in quasi- pixel unit exports the face of corresponding color sub-pixel in two benchmark pixel units The maximum value or average value of colouring component.
Specifically, the color component of object pixel unit P1 Green sub-pixels be equivalent to it is green in benchmark pixel unit P1 ' The color component of sub-pixels G11, the color component of red sub-pixel is equivalent to benchmark pixel unit in object pixel unit P1 The maximum value or average value of the color component of two red sub-pixels R11, R12 in P1 ', P2 ', blue in object pixel unit P1 The color component of sub-pixel is equivalent to the color component of two blue subpixels B11, B21 in benchmark pixel unit P1 ', P3 ' Maximum value or average value.The color component of red sub-pixel is equivalent to red in benchmark pixel unit P3 ' in object pixel unit P2 The color component of the color component of sub-pixels R21, object pixel unit P2 Green sub-pixels is equivalent to benchmark pixel unit The maximum value or average value of the color component of P3 ', P4 ' Green sub-pixels G21, G22, the sub- picture of blue in object pixel unit P2 The color component of element is equivalent to the maximum of the color component of two blue subpixels B21, B22 in benchmark pixel unit P3 ', P4 ' Value or average value.The color component of red sub-pixel is equivalent in benchmark pixel unit P4 ' red son in object pixel unit P3 The color component of the color component of pixel R22, object pixel unit P3 Green sub-pixels is equivalent in benchmark pixel unit P2 ' The color component of green sub-pixels G12, the color component of blue subpixels is equivalent to benchmark pixel list in object pixel unit P3 The maximum value or average value of the color component of two blue subpixels B11, B22 in first P1 ', P4 '.Thus, each target In pixel unit group, need the sub-pixel for undertaking the color component of two benchmark pixel unit sub-pixels whole in object pixel unit Body is distributed in crosswise.
It describes in detail to another driving method in the present embodiment with reference to Figure 14 and Figure 15.
In Figure 14 and Figure 15, in object pixel unit group, a sub- picture in the pixel unit of only promising rectangular configuration Element needs to undertake the color component of corresponding color sub-pixel in two benchmark pixel units, and the color component of the sub-pixel is two The maximum value or average value of the color component of corresponding color sub-pixel in benchmark pixel unit.
Specifically, in object pixel unit P1, the color components of green sub-pixels is equivalent to green in benchmark pixel unit P1 ' The color component of the color component of sub-pixels G11, red sub-pixel is equivalent to red sub-pixel in benchmark pixel unit P1 ' The color component of the color component of R11, blue subpixels is equivalent to the color point of benchmark pixel unit P1 ' blue subpixels B11 Amount.In object pixel unit P2, the color component of red sub-pixel is equivalent to red sub-pixel R12 in benchmark pixel unit P2 ' Color component, the color components of green sub-pixels is equivalent to the color point of benchmark pixel unit P2 ' Green sub-pixels G12 Amount, the color component of blue subpixels are equivalent to the color component of blue subpixels B12 in benchmark pixel unit P2 '.
In object pixel unit P3, the color component of red sub-pixel is equivalent to a red in benchmark pixel unit P4 ' The color component of the color component of sub-pixel (such as R22), green sub-pixels is equivalent to green in benchmark pixel unit P3 ' The color component of the color component of pixel (such as G21), blue subpixels is then equivalent to two indigo plants in benchmark pixel unit P3 ', P4 ' The maximum value or average value of the color component of sub-pixels B21, B22.
To sum up, the present invention is based on above-mentioned dot structures, it is proposed that a kind of matching image element driving method, it will be traditional Real rgb pixel structures are compressed, and object pixel unit group is equivalent to by 4 pixel units in theory pixel cells group In three pixel units (compression ratio 75%), keep the color component of at least one sub-pixel in object pixel unit group equivalent For the maximum value or average value in the color component of two sub-pixels in theory pixel cells group, to make object pixel unit group In at least one sub-pixel undertake the functions of two sub-pixels in theory pixel cells group.The image element driving method is particularly suitable for High PPI dot structures (PPI is 300 or more), experiment show the dot structure and its driving in the case that display screen PPI is higher The effect of method is better.
It should be noted that each embodiment is described by the way of progressive in this specification, each embodiment emphasis is said Bright is all difference from other examples, and just to refer each other for identical similar portion between each embodiment.
Above example describes the invention in detail, it should be appreciated that foregoing description is only to of the invention preferably real The description of example is applied, not to any restriction of the scope of the invention, the those of ordinary skill in field of the present invention is according in the disclosure above Hold any change, the modification done, belongs to the protection domain of claims.

Claims (10)

1. a kind of dot structure, which is characterized in that including multiple pixel columns, each pixel column includes be repeated in arrangement first Sub-pixel, the second sub-pixel and third sub-pixel, in adjacent two odd-numbered lines between the luminous zone of the sub-pixel of same color It is facing each other, odd-numbered line facing each other, adjacent between the luminous zone of the sub-pixel of same color in two adjacent even number lines It is mutually staggered with the luminous zone of the sub-pixel of same color in even number line, first sub-pixel, the second sub-pixel and third The shape of pixel is rectangular and length-width ratio is less than 1.5:1.
2. dot structure as described in claim 1, which is characterized in that first sub-pixel, the second sub-pixel and third The shape and size of pixel are identical.
3. dot structure as described in claim 1, which is characterized in that the first adjacent sub-pixel and the second sub- picture in a line The boundary line of element is overlapped with the center line that third sub-pixel most adjacent in adjacent rows extends along column direction.
4. dot structure as claimed any one in claims 1 to 3, which is characterized in that first sub-pixel, the second sub- picture Element and third sub-pixel are square or rectangle.
5. dot structure as claimed any one in claims 1 to 3, which is characterized in that each first sub-pixel, second In sub-pixel and third sub-pixel, adjacent two sides are connected by several camber lines and/or several straight lines.
6. dot structure as claimed any one in claims 1 to 3, which is characterized in that first sub-pixel, the second sub- picture One kind in the color of element and third sub-pixel respectively red, blue and green, and first sub-pixel, the second sub- picture Element, the color of third sub-pixel are different.
7. a kind of OELD display screens, which is characterized in that comprising such as dot structure according to any one of claims 1 to 6.
8. a kind of vapor deposition mask plate, which is characterized in that the vapor deposition including multiple array arrangements is open, in adjacent two odd-numbered lines Vapor deposition opening it is facing each other, vapor deposition in two adjacent even number lines is open odd-numbered line and even number line facing each other, adjacent In vapor deposition opening mutually stagger, it is described vapor deposition opening shape be rectangular and length-width ratio be less than 1.5:1.
9. vapor deposition mask plate as claimed in claim 8, which is characterized in that the vapor deposition opening is square or rectangle.
10. vapor deposition mask plate as claimed in claim 8, which is characterized in that two adjacent sides pass through in the vapor deposition opening Several camber lines and/or the connection of several straight lines.
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