CN109994529A - Pixel limiting structure, OLED structure and display panel - Google Patents
Pixel limiting structure, OLED structure and display panel Download PDFInfo
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- CN109994529A CN109994529A CN201910020671.7A CN201910020671A CN109994529A CN 109994529 A CN109994529 A CN 109994529A CN 201910020671 A CN201910020671 A CN 201910020671A CN 109994529 A CN109994529 A CN 109994529A
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/122—Pixel-defining structures or layers, e.g. banks
Abstract
The present embodiments relate to a kind of pixel limiting structure, OLED structure and display panel, pixel limiting structure includes: the first pixel confining layer, and the first pixel confining layer includes the first pixel limited section and the first extension section；Second pixel confining layer, the second pixel confining layer include the second pixel limited section and the second extension section；First pixel limited section and the second pixel limited section limit pixel openings jointly, first extension section and the second extension section two sides that be located at same pixel openings opposite, and the first pixel limited section has overlay region in the opposite other two sides of same pixel openings with the second pixel limited section.The present invention can reduce the otherness between the light emission luminance for stretching front and back OLED structure, promote the tensile property and display effect of OLED structure.
Description
Technical field
The present embodiments relate to field of display technology, in particular to a kind of pixel limiting structure, OLED structure and aobvious
Show panel.
Background technique
OLED (Organic Light-Emitting Diode) is known as organic electroluminescent LED.OLED display technology
With all solid state, active shines, high contrast, ultra-thin, low-power consumption, effect speed is fast, working range is wide, it is flexible aobvious to be easily achieved
Show and many advantages, such as 3D display, so that it is applied on many multi-display equipments at present, such as applied to television set and shifting
In dynamic equipment.
Flexible OLED refers to flexible Organic Light Emitting Diode, is manufactured based on flexible base board, and run on flexible substrates.
Compared with traditional rigid OLED, flexible OLED is more flexible, lighter and thinner, so that foldable, rollable display technology
It is possibly realized.With the further investigation to flexible OLED technology, the concept for stretching display technology is suggested.Stretchable display technology
Display screen realization can be made to be bent in two directions, and display screen can be drawn in the case where not influencing resolution ratio
It is long, and can finally be restored to original shape.Stretchable display technology be important front edge direction in next-generation display technology it
One.
There are areas for improvement for the performance of the stretchable display screen of the prior art.
Summary of the invention
The technical issues of embodiment of the present invention solves is provides a kind of pixel limiting structure, OLED structure and display surface
Plate solves the problems, such as that light emission luminance is dimmed in drawing process.
In order to solve the above technical problems, the present invention provides a kind of pixel limiting structure, comprising: the first pixel confining layer, institute
State the first extension section that the first pixel confining layer includes the first pixel limited section and connect with first pixel limited section；With
The second pixel confining layer that first pixel confining layer is oppositely arranged, second pixel confining layer are limited including the second pixel
Portion and the second extension section being connect with second pixel limited section；Wherein, first pixel limited section and described second
Pixel limited section limits pixel openings jointly, and first extension section and second extension section are located at same pixel openings
Opposite two sides, and first pixel limited section and second pixel limited section are in opposite another of the same pixel openings
Outer two sides have overlay region.
The present invention also provides a kind of OLED structures, including above-mentioned pixel limiting structure.
The present invention also provides a kind of display panels, including above-mentioned OLED structure.
Compared with prior art, technical solution provided in an embodiment of the present invention has the advantage that
The present invention provides a kind of pixel limiting structure including two layers of pixel confining layer, and the first pixel confining layer includes first
Pixel limited section and the first extension section, the second pixel confining layer include the second pixel limited section and the second extension section, first
Pixel limited section and the second pixel limited section limit pixel openings jointly, and the first extension section is located at same with the second extension section
The opposite two sides of pixel openings, during stretched pixels limiting structure, first extension section and the second extension section distinguish energy
Enough drive the first pixel limited section and the second pixel limited section equal with the direction of the second extension section is directed toward along the first extension section
It is moved on capable direction, to increase the pixel openings in the width on the direction that the first extension section is directed toward the second extension section
Size；In addition, the overlay region had both guaranteed that pixel openings were close-shaped during stretching, and due to the first picture of overlay region
Plain limited section and the second pixel limited section are upper and lower level positional relationship, it is thus possible to pixel openings be avoided to stretch perpendicular to first
It is directed toward the width dimensions on the second extension section direction and reduces in portion.Therefore, during stretching, the area of the pixel openings can
Increase with the increase of level of stretch, when the pixel limiting structure is applied in OLED structure, is stretching OLED structure
In the process, the area for the luminous zone that pixel openings define also gradually increases, so that compensation is due to the distance between adjacent luminous zone
Increase and caused by the dimmed phenomenon of light emission luminance so that the light emission luminance after stretching and the light emission luminance otherness before stretching
It is small, and the picture exquisiteness degree difference before the picture exquisiteness degree and stretching after stretching is small, promotes the draftability of OLED structure
Energy and display effect.
In addition, the shape of the first extension section is S-shaped strip, the shape of the second extension section is S-shaped strip, is conducive to improve institute
The stretchable amount of maximum for stating the first extension section and the second extension section, effectively prevents the first extension section and second during stretching
The problem of extension section is broken.
In addition, the first pixel limited section for limiting the adjacent pixel openings is oppositely arranged along first direction, limit
Second pixel limited section of adjacent pixel opening is oppositely arranged, and is conducive to the shape for simplifying the first extension section and the second extension section,
And shorten the length of the first extension section and the second extension section, improve the energy that the first extension section drives the first pixel limited section mobile
Power improves the ability that the second extension section drives the second pixel limited section mobile, to further improve the area of pixel openings
Matching between increase degree and pixel limiting structure level of stretch.
In addition, for same pixel openings, at least one of the first pixel limited section or second pixel limited section
Shape is closed ring, when the pixel limiting structure is applied in OLED structure, is conducive to avoid when amount of tension is excessive
Caused by be located at first electrode edge the problem of being exposed below pixel limiting structure.
In addition, the first pixel confining layer further includes the first stretching limiting unit, the second pixel confining layer further includes the second stretching
Limiting unit is conducive to further reduce the width dimensions variable quantity of pixel openings in a second direction in drawing process, guarantees
The width dimensions of the pixel openings in a second direction remain unchanged.
In addition, in a second direction, the first pixel limited section for limiting adjacent pixel opening is interconnected to constitute continuous film
Layer, the second pixel limited section for limiting adjacent pixel opening is interconnected to constitute continuous film layer, along first direction drawing process
In, the displacement of the first pixel limited section and the second pixel limited section of continuous film layer in a second direction is small, be conducive into
One step reduces the width dimensions variable quantity of pixel openings in a second direction during stretching, guarantees that the pixel openings exist
Width dimensions in second direction remain unchanged.
In OLED structure provided in an embodiment of the present invention, pixel openings limit the area of luminous zone, therefore are stretching OLED
The area of luminous zone gradually increases in configuration process, to compensate for due to the increase of the distance between adjacent luminous zone and bring
The dimmed phenomenon of brightness, reduce draw high during or stretch after light emission luminance and the light emission luminance before stretching otherness,
It can even guarantee that the light emission luminance in drawing process and after stretching is identical as the light emission luminance before stretching, and stretch front and back
Picture exquisiteness degree difference is small, to promote the tensile property and display effect of OLED structure.
Detailed description of the invention
One or more embodiments are illustrated by the picture in corresponding attached drawing, these exemplary theorys
The bright restriction not constituted to embodiment, the element in attached drawing with same reference numbers label are expressed as similar element, remove
Non- to have special statement, composition does not limit the figure in attached drawing.
Fig. 1 is a kind of overlooking structure diagram of stretchable display screen stretching front and back；
Fig. 2 is the overlooking structure diagram for the pixel limiting structure that first embodiment of the invention provides；
Fig. 3 is the local overlooking structural schematic diagram for another pixel limiting structure that first embodiment of the invention provides；
Fig. 4 is the local overlooking structural schematic diagram for another pixel limiting structure that first embodiment of the invention provides；
Fig. 5 and Fig. 6 is the schematic diagram of the section structure for the OLED structure that first embodiment of the invention provides；
Fig. 7 is the local overlooking structural schematic diagram for the pixel limiting structure that second embodiment of the invention provides；
Fig. 8 is the local overlooking structural schematic diagram for the pixel limiting structure that third embodiment of the invention provides；
Fig. 9 is the overlooking structure diagram for the pixel limiting structure that fourth embodiment of the invention provides.
Specific embodiment
It can be seen from background technology that there are areas for improvement for the performance of the stretchable display screen of the prior art.Specifically,
There are display brightness unevenness, picture exquisiteness degree different problems for existing stretchable display screen.
Fig. 1 is a kind of overlooking structure diagram of stretchable display screen stretching front and back, wherein left figure is non-stretched in Fig. 1
Preceding schematic diagram, right figure is the schematic diagram after stretching in Fig. 1.The reason of analysis finds, leads to the above problem include: with reference to Fig. 1,
Stretchable display screen includes multiple luminous zones 10 and the non-light-emitting area (not indicating) between adjacent luminous zone 10, wherein institute
The position of luminous zone 10 is stated by the limited opening in pixel confining layer 20；And for all luminous zones 10 and non-light-emitting area,
The pixel confining layer 20 is with multiple for limiting the complete film layer of the opening of luminous zone 10.
During stretching the stretchable display screen, the pixel confining layer 20 between adjacent apertures is also accordingly stretched,
So that the distance between adjacent apertures increase, and the area of the opening 11 is held essentially constant, that is to say, that single hair
The light-emitting area in light area 10 is constant, therefore the light-emitting area of single luminous zone 10 occupies the ratio of the gross area of stretchable display screen
Decline, causes display brightness dimmed, display pattern is roughening.
In addition, stretchable display screen generally includes stretch zones and unstretched regions, stretch zones is luminous after the stretch
Area is significantly less than the light-emitting area of unstretched regions, causes 10 density of luminous zone of stretch zones and unstretched regions to have poor
It is different, and then, the display picture exquisiteness degree different problems different from the display brightness of unstretched regions that lead to that there are stretch zones.
To solve the above problems, the present invention provides a kind of pixel limiting structure, using the first pixel confining layer and the second picture
Plain confining layers are collectively as pixel limiting structure, and the area of pixel openings also increases as during stretching, to be conducive to
Increase the area for the luminous zone that pixel openings limit, improves the problem that light emission luminance is dimmed after stretching.
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with attached drawing to the present invention
Each embodiment be explained in detail.However, it will be understood by those skilled in the art that in various embodiments of the present invention
In, in order to make the reader understand this application better, many technical details are proposed.But even if without these technical details and
Based on the various changes and modifications of following embodiment, the application technical solution claimed also may be implemented.
Fig. 2 is the overlooking structure diagram for the pixel limiting structure that first embodiment of the invention provides.
With reference to Fig. 2, the pixel limiting structure includes: the first pixel confining layer 101, first pixel confining layer 101
Including the first pixel limited section 111 and the first extension section 121 being connected with first pixel limited section 111；With described
The second pixel confining layer 102 that one pixel confining layer 101 is oppositely arranged, second pixel confining layer 102 include the second pixel
Limited section 112 and the second extension section 122 being connected with second pixel limited section 112；Wherein, first pixel limits
Portion 111 and second pixel limited section 112 limit pixel openings I jointly, and first extension section 121 is stretched with described second
Portion 122 is located at the opposite two sides the pixel openings I, and first described in the pixel openings I opposite other two sides
Pixel limited section 111 and second pixel limited section 112 have overlay region.
Pixel limiting structure provided in this embodiment is described in detail below with reference to attached drawing.It should be noted that
For the ease of the subsequent explanation to OLED structure, array substrate is also shown in addition to showing pixel limiting structure in Fig. 2.
The pixel limiting structure can be applied in OLED structure, LCD structure or Micro LED structure.The pixel
Opening I is used to define position and the size of luminous zone, that is to say, that the area of the pixel openings I and the light-emitting surface of luminous zone
Product is identical.
The material of first pixel confining layer 101 is organic gel, including polyimides, acrylic resin or phenylpropyl alcohol ring fourth
One of alkene is a variety of；The material of second pixel confining layer 102 is organic gel, including polyimides, acrylic resin
Or one of phenylpropyl alcohol cyclobutane or a variety of.In the present embodiment, the material of second pixel confining layer 102 and first picture
The material of plain confining layers 101 is identical.In other embodiments, the material of second pixel confining layer can also be with described first
The material of pixel confining layer is different.
It should be noted that for same pixel openings I, first pixel limited section 111 and the first stretching
Portion 121 is structure as a whole, and first pixel confining layer 101 is that the processing step with along with is utilized to be formed；For same pixel
It is open for I, second pixel limited section 112 and the second extension section 122 are structure as a whole, second pixel confining layer
102 be that the processing step with along with is utilized to be formed.
During stretching the pixel limiting structure, first pixel is stretched using first extension section 121 and is limited
Determine portion 111, stretch second pixel limited section 112 using second extension section 122, so that referring to along the first extension section 121
The width dimensions of pixel openings I on 122 direction of the second extension section increase.And due to the of the other two sides pixel openings I
One pixel limited section 111 and the second pixel limited section 112 have overlay region, and the overlay region is to stretch the pixel limiting structure
It provides and stretches space, guarantee that the pixel openings I is close-shaped during stretching, that is to say, that when pixel limiting structure
When applied in OLED structure, can guarantee OLED structure during stretching anode edge by the first pixel limited section 111 or
The second pixel of person limited section 112 covers.Meanwhile the first pixel limited section 111 and the second pixel limited section 112 of the overlay region
For upper and lower level positional relationship, guarantee that the width dimensions of the pixel openings I in another direction remain unchanged during stretching
Or reduction amount very little.
Therefore, during stretched pixels limiting structure, the area of the pixel openings I increases.
In the present embodiment, the pixel openings I is square aperture, has multiple pixel openings in the pixel limiting structure
I.In general, the luminous zone in OLED structure is arranged in array, in the present embodiment, multiple pixel openings I are also accordingly in
The array of first direction and second direction distribution, wherein first direction is perpendicular with second direction, arranged in the first direction
Pixel openings I constitutes multirow pixel openings I, and the pixel openings I arranged in a second direction constitutes multiple row pixel openings I.This implementation
In example, it is illustrated so that the first direction is X-direction, second direction is Y-direction as an example.
In the present embodiment, by taking draw direction is X-direction as an example.The draw direction can may be the side-X for +X direction
To can also simultaneously include +X direction and -X direction.During stretching, pixel openings I X-direction width dimensions increase and
Width dimensions in the Y direction remain unchanged or incrementss very little.
Along first direction, first extension section 121 is alternatively arranged with the second extension section 122.
The shape of first extension section 121 is strip.In the present embodiment, the shape of first extension section 121 is S-shaped
Strip, while guaranteeing that first extension section 121 is able to drive the movement of first pixel limited section 111, described first
Extension section 121 itself has certain stretchable deformation space, thus avoid 121 under tension of the first extension section from acting on and
The problem of being broken.
The shape of second extension section 122 is strip.Correspondingly, in the present embodiment, the shape of second extension section 122
Shape is also S-shaped strip, accordingly can also reduce the probability that second extension section 122 is broken.
In Y-direction, the width dimensions of first extension section 121 are unsuitable too small.If first extension section 121
Width dimensions are too small, and the first extension section 121 is be easy to cause to be broken during stretching.For this purpose, in the present embodiment, along the side
Upwards, the width dimensions of first extension section 121 are greater than or equal to 10 μm, for example, 12 μm, 20 μm, 50 μm etc..
And the width dimensions of first extension section 121 also should not be too large, if the width dimensions of first extension section 121
Excessive, the volume of first extension section 121 is accordingly larger, easily causes first extension section 121 itself during stretching
The amount that deformation occurs is smaller, and the ability that first extension section 121 drives the first pixel limited section 111 mobile is relatively weak.
For this purpose, in the present embodiment, in a second direction, the width dimensions of first extension section 121 and described first
The ratio of the width dimensions of pixel limited section 111 is less than or equal to 3/4.Wherein, the broad-ruler of first pixel limited section 111
The width dimensions of 111 part of the first pixel limited section for limiting pixel openings I in a first direction of very little finger.For example, described
The ratio of the width dimensions of the width dimensions and first pixel limited section 111 of one extension section 121 is 1/2,1/10,1/50
Deng.
For the pixel openings I in array distribution, along first direction, the first of a pixel openings I is limited
Pixel limited section 111 and the first pixel limited section 111 for limiting adjacent pixel opening I are connected to same first extension section 121,
The the second pixel limited section 112 for limiting a pixel openings I is connect with the second pixel limited section 112 for limiting adjacent pixel opening I
To same second extension section 122.
In the present embodiment, along first direction, for the pixel openings I of same a line, adjacent pixel opening I is limited
The first pixel limited section 111 be oppositely arranged and connect same first extension section 121, limit the second picture of adjacent pixel opening I
Plain limited section 112 is oppositely arranged and connects same second extension section 122.
The benefit being arranged in this way includes: the shape for being conducive to simplify first extension section 121 and the second extension section 122,
And shorten the length of the first extension section 121 and the second extension section 122, thus improve first extension section 121 drive it is described
The mobile ability in first pixel limited section 111, and improve second extension section 122 and drive second pixel limited section 112
Mobile ability, and then be conducive to improve the area increase degree of the pixel openings I and the level of stretch of pixel limiting structure
Between matching degree, guarantee that the density of the pixel openings I during stretching in pixel limiting structure remains unchanged or reduces
Degree it is small.When pixel limiting structure is applied in OLED structure, the density of luminous zone during stretching is advantageously ensured that
It remains unchanged or reduced degree is small.
Fig. 3 is the local overlooking structural schematic diagram of another pixel limiting structure provided in this embodiment, as shown in figure 3,
It can also be open I's with adjacent pixel is limited in the first pixel limited section 111 for along first direction, limiting a pixel openings I
Second pixel limited section 112 is oppositely arranged, and the second pixel limited section 112 for limiting a pixel openings I is opened with adjacent pixel is limited
The first pixel limited section 111 of mouth I is oppositely arranged, wherein first extension section 121 need to bypass the second pixel limited section 112
To be connected to the first pixel limited section 111, second extension section 122 need to be around the first pixel limited section 111 to be connected to the
Two pixel limited sections 112.
In the present embodiment, in a second direction, i.e., for same row pixel openings I, adjacent pixel opening I is limited
The first pixel limited section 111 be isolated from each other, limit adjacent pixel opening I the second pixel limited section 112 be isolated from each other.
In the present embodiment, as shown in Fig. 2, the shape of first pixel limited section 111 is concave, wherein described
First pixel limited section 111 includes first connecting portion 11a, the first lower limited section for connecting the one end the first connecting portion 11a
11b, the connection first connecting portion 11a other end first on limited section 11c, first extension section 121 connects described the
One interconnecting piece 11a.
The shape of second pixel limited section 112 is concave, wherein second pixel limited section 112 includes
Second connecting portion 12a, the second lower limited section 12b for connecting the one end the second connecting portion 12a, the connection second connecting portion
Limited section 12c on the second of the 12a other end, second extension section 122 connect the second connecting portion 12a.
Described first lower limited section 11b is identical as the described second lower extending direction of limited section 12b, and first lower limit
Determine that there is the overlay region between portion 11b and the second lower limited section 12b；Limited section 11c and described second on described first
The extending direction of upper limited section 12c is identical, and has between the 12c of limited section on limited section 11c and described second on described first
The overlay region.
In the present embodiment, first extension section 121 is connect with the center of the first connecting portion 11a, and described
Two extension sections 122 are connect with the center of the second connecting portion 12a, during stretched pixels limiting structure, are conducive to
Guarantee tension equalizer of first pixel limited section 111 by the first extension section 121, prevent as pulling force it is uneven caused by the
The problem of being broken between one extension section 121 and the first pixel limited section 111, likewise, prevent as pulling force it is uneven caused by the
Breakage problem between two extension sections 122 and the second pixel limited section 112；It is weighed during stretching in addition, also helping guarantee
Between the first pixel limited section 111 and the second pixel limited section 112 in folded area there is lap always, guarantees that the pixel is opened
Mouth I is always closing opening.
Fig. 4 is the local overlooking structural schematic diagram of another pixel limiting structure provided in this embodiment, needs to illustrate
It is, as shown in figure 4, in other embodiments, first pixel confining layer 101 can also include: with the overlay region
First assisting tension portion 131 of one pixel limited section 111 connection, and in Y-direction, limiting the first of adjacent pixel opening I
Pixel limited section 111 is oppositely arranged and is connected to same first assisting tension portion 131；Second pixel confining layer 102 is also wrapped
It includes: the second assisting tension portion 132 being connected with the second pixel limited section 112 of the overlay region, and in Y-direction, it limits
The second pixel limited section 112 of adjacent pixel opening I is oppositely arranged and is connected to same second assisting tension portion 132.
It can refer to the corresponding description of the first extension section 121 in relation to the explanation in first assisting tension portion 131, it is related described
The explanation in the second assisting tension portion 132 can refer to the corresponding description of the second extension section 122.First assisting tension portion, 131 He
Second assisting tension portion 132 makes pixel limiting structure can not only be applied to the stretching of X-direction, additionally it is possible to be applied to Y-direction
Stretching, along Y-direction drawing process, the width dimensions of the pixel openings I in the Y direction increase, and the first extension section 121
It can prevent pixel openings I from reducing in the width dimensions of X-direction with the second extension section 122, to realize along Y-direction drawing process
The purpose of the middle increased area of pixel openings, so that pixel limiting structure can be applied to the stretching demand with multiple directions
In OLED structure.
Pixel limiting structure provided in this embodiment uses the first pixel confining layer 101 and the second pixel confining layer 102
It is common to limit pixel openings I, in drawing process in X direction, first extension section 121 and the second extension section 122 band respectively
Dynamic first pixel limited section 111 and the second pixel limited section 112 are mobile, so that width dimensions of the pixel openings I in X-direction
Increase；And the first pixel limited section 111 of two sides and the second pixel limited section 112 have overlay region to pixel openings I in the Y direction,
So that the pixel confining layer of overlay region is upper and lower level positional relationship rather than integral structure, thus the pixel during stretching
Opening I is kept approximately constant in the width dimensions along Y-direction.It follows that using pixel limiting structure provided in this embodiment
When applied in OLED structure, since pixel openings I becomes larger during stretching, so that the luminous zone limited by pixel openings I
Area also gradually increase during stretching.
Correspondingly, the present embodiment also provides a kind of OLED structure.Fig. 5 and Fig. 6 is the OLED structure that first embodiment provides
The schematic diagram of the section structure, wherein Fig. 5 be Fig. 2 in along the direction AA1 the schematic diagram of the section structure, Fig. 6 be Fig. 2 in along the direction BB1
The schematic diagram of the section structure.
In conjunction with reference Fig. 2, Fig. 5 and Fig. 6, the OLED structure includes: array substrate 11；Positioned at the array substrate 11 1
It the first electrode 12 of side, multiple luminescence units 13, above-mentioned pixel limiting structure I and opposite with the first electrode 12 sets
The second electrode 14 set, pixel limiting structure interval adjacent light-emitting units 13；Wherein, the pixel openings I exposes institute
12 part of the surface of first electrode is stated, the luminescence unit 13 is located at 12 surface of first electrode exposed.
OLED structure provided in this embodiment is described in detail below with reference to attached drawing.It should be noted that related
The detailed description of the pixel limiting structure, can refer to the respective description of previous embodiment, details are not described herein.
The array substrate 11 includes: substrate and the thin film transistor (TFT) on the substrate, wherein the film is brilliant
Body pipe is between the substrate and first electrode 12.In the present embodiment, the OLED structure is applied to stretchable display panel
In, correspondingly, substrate is flexible base board.The material of the substrate be polyethylene (PE), polypropylene (PP), polystyrene (PS),
Polyethylene terephthalate (PET), polyethylene naphthalate (PEN) or polyimides (PI).The substrate
It can also be ultra thin glass substrates, the thickness of ultra thin glass substrates is less than 50 μm.
The material of the first electrode 12 is transparent conductive material, the anode as OLED structure.It is described in the present embodiment
The material of first electrode 12 is ITO；In other embodiments, the material of the first electrode can also be IZO, Au, Pt or Si.
In the present embodiment, the first electrode 12 is multiple rectangular configurations, be located at 13 lower section of the luminescence unit with
And below partial pixel limiting structure.
The pixel openings I limits the luminous zone of the OLED structure, that is to say, that the size of the pixel openings I with
The light-emitting area of luminous zone is consistent.First pixel limited section 111 and the second pixel limited section 112 cover the first electrode
12 marginal portion, the bottom the pixel openings I also expose part first electrode 12, and the pixel openings I exposes
The area of first electrode 12 is the light-emitting area of OLED structure, and the area for the first electrode 12 that the pixel openings I exposes is got over
The light-emitting area of big corresponding OLED structure is bigger.
In the present embodiment, on perpendicular to the substrate surface direction, the section shape of the pixel openings I is terraced
Shape, and the luminescence unit 13 also covers the pixel openings I partial sidewall surface.The benefit being arranged in this way includes: the hair
Light unit 13 is located at 12 upper surface of first electrode that the pixel openings I exposes, when stretching the OLED structure, the picture
Plain limiting structure is also accordingly stretched so that the area of pixel openings I increases, that is to say, that the pixel openings I exposed
12 surface area of first electrode increases；Since the section shape of pixel openings I is inverted trapezoidal, and luminescence unit 13 is opened positioned at pixel
Mouth I partial sidewall surface, therefore the upper surface area of luminescence unit 13 is greater than lower surface area, in pixel openings I exposure
After 12 surface area increase of first electrode out, 12 top of first electrode for advantageously ensuring that pixel openings I exposes is sent out
Light unit 13 is blocked.
It should be noted that in other embodiments, the luminescence unit may be located on first electrode and pixel limits
Between structure, specifically, the luminescence unit is located between first electrode and the first pixel limited section and first electrode and the
Between two pixel limited sections.Before forming pixel limiting structure, the luminescence unit first is formed in first electrode surface.It is drawing
Pixel limited section structure is also accordingly stretched so that the area of pixel openings increases, since luminescence unit is located at when stretching OLED structure
Between first electrode and pixel limiting structure, therefore above the first electrode that pixel openings expose after stretching OLED structure
It is blocked by luminescence unit.
In the present embodiment, the luminescence unit 13 is laminated construction, comprising: includes: hole injection layer (HIL, Hole
Inject Layer), the hole transmission layer (HTL, Hole Transport Layer) on hole injection layer, be located at hole
Luminescent layer (EML, Emitting Layer), electron transfer layer (ETL, Electron on luminescent layer in transport layer
Inject Layer) and electron injecting layer (EIL, Electron Inject Layer) on electron transfer layer.
In other embodiments, the luminescence unit can be three layers of hole transmission layer, luminescent layer and electron transfer layer
Structure, alternatively, luminescence unit can also be the single layer structure of luminescent layer, alternatively, luminescence unit can also be double-layer structure.
Cathode of the second electrode 14 as OLED structure.In the present embodiment, the material of second electrode 14 is Ag/Mg conjunction
Gold.In other embodiments, the material of second electrode can also be Al, Li, Ca, In, ITO or IZO.
By Such analysis it is found that the opening area of pixel openings I increases during stretching OLED structure, therefore OLED is tied
The light-emitting area of structure accordingly becomes larger, so that the ratio that the light-emitting area of the OLED structure occupies the OLED structure gross area is kept not
Become or vary less, the increase of the pixel openings I can compensate for the spacing between pixel openings I and increase bring brightness change
The problems such as dark, guarantees after stretching to prevent the light emission luminance of OLED structure dimmed and show the roughening problem of picture
The light emission luminance of OLED structure with stretch before the light emission luminance of OLED structure it is consistent, and stretch after OLED structure display picture it is thin
Greasy degree is consistent with the preceding display picture exquisiteness degree of OLED structure is stretched.
Correspondingly, the present embodiment also provides a kind of display device, including above-mentioned OLED structure.Display device can be hand
Machine, tablet computer, television set, display, Digital Frame or navigator etc. have the product or component of TV functions.
The display device can be divided into drawing zone and non-stretching area, and the present embodiment can compensate for due to stretching display device
The luminance difference of bring drawing zone and non-stretching area guarantees the display brightness of drawing zone and the brightness uniformity in non-stretching area,
And the picture exquisiteness degree consistency of drawing zone and non-stretching area, thus the more non-stretching area of the light emission luminance for avoiding the occurrence of drawing zone
The dark problem of light emission luminance, and the problem that the display picture that avoids the occurrence of the display more non-stretching area of picture of drawing zone is coarse.
Second embodiment of the invention also provides a kind of pixel limiting structure, and Fig. 7 is the picture that second embodiment of the invention provides
The local overlooking structural schematic diagram of plain limiting structure.Different from the first embodiment the first pixel confining layer in the present embodiment
Or second the shape of at least one of pixel confining layer be closed ring.It is illustrated below with reference to attached drawing, with first
Embodiment will not be described in detail below identical part.
With reference to Fig. 7, pixel limiting structure provided in this embodiment includes: the first pixel confining layer 201, first pixel
Confining layers 201 include the first pixel limited section 211 and the first extension section 212 connecting with first pixel limited section 211；
The second pixel confining layer 202 being oppositely arranged with first pixel confining layer 201, second pixel confining layer 202 include
Second pixel limited section 221 and the second extension section 222 being connect with second pixel limited section 221；Wherein, described first
Pixel limited section 211 and second pixel limited section 221 limit pixel openings I jointly, first extension section 212 with it is described
Second extension section 222 is located at the opposite two sides same pixel openings I, and opposite in addition in the same pixel openings I
First pixel limited section 211 described in two sides has overlay region with second pixel limited section 221.
The pixel limiting structure has multiple pixel openings I, and multiple pixel openings I are in along first direction and the
The array in two directions is distributed, and first direction is vertical with second direction.It should be noted that illustrating only single pixel in Fig. 7
It is open for I, and first direction is X-direction, second direction is Y-direction.
Unlike previous embodiment, for same pixel openings I, first pixel limited section 211 and described the
At least one closed ring in two pixel limited sections 221.It is closing with second pixel limited section 221 in the present embodiment
For annular.
The shape of first pixel limited section 211 is concave.First pixel limited section 211 includes the first company
Socket part 21a, the first lower limited section 21b, the connection first connecting portion 21a for connecting the one end the first connecting portion 21a are another
Limited section 21c on the first of end, first extension section 212 connect the first connecting portion 21a.
The shape of second pixel limited section 221 is " returning " font.Second pixel limited section includes: the second connection
Portion 22a, the second lower limited section 22b, the connection second connecting portion 22a other end for connecting the one end the second connecting portion 22a
Second on limited section 22c, second extension section 222 connects the second connecting portion 22a, second pixel limited section
212 further include the closure 22d for connecting the lower limited section 22b of limited section 22c and second on second.
Wherein, the closure 22d is in the orthographic drawing morpheme on the surface the first connecting portion 21a in first connection
In portion 21a, and in X direction, part first connecting portion 21a is exposed between the closure 22d and the pixel openings I
Surface.
During stretching the pixel limiting structure in X direction, second pixel limited section 221 be it is close-shaped,
It can prevent since pixel limiting structure can not cover the first electrode edge of OLED structure and ask caused by amount of tension is excessive
Topic.Specifically, during stretching, the displacement of first pixel limited section 211 is also relatively large if amount of tension is excessive,
The problem of be easy to causeing the first pixel limited section 211 to expose first electrode edge surface；When first pixel limited section 211
When exposing first electrode edge, the closure 22d can guarantee that first electrode edge is covered by pixel limiting structure always.
On in X direction, between the pixel openings I and closure 22d and the portion 22d of being closed exposes first
The width value of interconnecting piece 21a is a, and a value can determine as the case may be.In the present embodiment, the pixel limiting structure application
When in OLED structure, by taking draw direction is along +X direction as an example, a value is greater than or equal to single pixel structure in OLED structure and exists
The maximum stretchable value of design along +X direction.
Correspondingly, the present embodiment also provides a kind of OLED structure including above-mentioned pixel limiting structure.The related OLED
The detailed description of structure can refer to the respective description of previous embodiment, and details are not described herein.
In the technical solution of OLED structure provided in this embodiment, light emission luminance caused by stretching can not only be compensated and be lower
The phenomenon that so that OLED structure light emission luminance after stretching and stretch preceding OLED structure light emission luminance difference it is small, and can also
Avoid the problem that as amount of tension is excessive and caused by first electrode edge be exposed, the further OLED structure that improves
Tensile property and display effect improve the reliability of OLED structure.
Correspondingly, the present embodiment also provides a kind of display device including above-mentioned OLED structure.
Third embodiment of the invention also provides a kind of pixel limiting structure, and Fig. 8 is the picture that third embodiment of the invention provides
The local overlooking structural schematic diagram of plain limiting structure, different from the first embodiment, in the present embodiment, the first pixel confining layer
It further include the first stretching limiting unit, the second pixel confining layer further includes the second stretching limiting unit.It is carried out below with reference to attached drawing detailed
It describes in detail bright, will not be described in detail below the part being identical with the first embodiment.
With reference to Fig. 8, pixel limiting structure provided in this embodiment includes: the first pixel confining layer 301, first pixel
Confining layers 301 include the first pixel limited section 311 and the first extension section 321 connecting with first pixel limited section 311；
The second pixel confining layer 302 being oppositely arranged with first pixel confining layer 301, second pixel confining layer 302 include
Second pixel limited section 312 and the second extension section 322 being connect with second pixel limited section 312；Wherein, described first
Pixel limited section 311 and second pixel limited section 312 limit pixel openings I jointly, first extension section 321 with it is described
Second extension section 322 is located at the opposite two sides same pixel openings I, and opposite in addition in the same pixel openings I
First pixel limited section 311 described in two sides has overlay region with second pixel limited section 312.
The quantity of the pixel openings I is multiple.For the ease of illustration and illustrate, illustrates only single pixel in Fig. 8 and open
Mouth I.
First pixel confining layer 301 further include: first connect with first pixel limited section 311 stretches limitation
Portion 31, described first, which stretches limiting unit 31, limits the deformation of pixel openings I in the Y direction.Second pixel confining layer 302 is also
It include: that second connect with second pixel limited section 312 stretches limiting unit 32, described second, which stretches limiting unit 32, limits institute
State the deformation of pixel openings I in the Y direction.
Same first pixel limited section 311 is connect with two first stretching limiting units 31, and first, which stretches limiting unit 31, distinguishes
The two sides opposite positioned at the pixel openings I.Same second pixel limited section 312 is connect with two second stretching limiting units 32,
Second stretching limiting unit 32 is located at the opposite two sides the pixel openings I.
In the present embodiment, the first stretching limiting unit 31 is connect with the first pixel limited section 311 of overlay region, and described the
Two stretching limiting units 32 are connect with the second pixel limited section 312 of overlay region.In other embodiments, described first limitation is stretched
Portion can also be connect with the first pixel limited section other than overlay region, it is described second stretch limiting unit can also with other than overlay region
The second pixel limited section connection.
Specifically, the first stretching limiting unit 31 and the second stretching limiting unit 32 are for preventing the pixel openings I from existing
Width dimensions in Y-direction reduce.
It is described first stretch limiting unit 31 include the first short leg and with first short leg 1 connected vertically first
Long leg, wherein first short leg is connected with the first pixel limited section 311, the extending direction and X of first long leg
Direction is consistent.It is described second stretch limiting unit 32 include the second short side and with second short side the second long side connected vertically
Portion, wherein second short leg is connected with the second pixel limited section 312, the extending direction and X-direction of second long leg
Unanimously.
In the present embodiment, the shape of first long leg is S-shaped strip, and the shape of second long leg is S-shaped item
Shape.
During stretching the pixel limiting structure, first long leg is stretched to apply the first short leg
Add pulling force, applies to first pixel limited section 311 backwards to pixel openings I after the effect of the first short leg under tension
Pulling force effect, to slow down or avoid the deformation of the first pixel limited section 311 during stretching towards pixel openings I, into
One step prevents the width dimensions of pixel openings I in the Y direction from becoming smaller.
The mechanism of action in relation to the second stretching limiting unit 32 can refer to the respective description of the first stretching limiting unit, herein
It repeats no more.
Pixel limiting structure provided in this embodiment is conducive to further guarantee that pixel openings I is in Y during stretching
Direction is not susceptible to deformation, effectively prevents the width dimensions of pixel openings I in the Y direction from becoming smaller, to guarantee stretching
The area of pixel openings I effectively increases in journey.
Correspondingly, the present embodiment also provides a kind of OLED structure including above-mentioned pixel limiting structure.The present embodiment is also
A kind of display panel including above-mentioned OLED structure is provided.
OLED structure provided in this embodiment can further reduce the otherness for stretching front and back light emission luminance, into one
The reduction of step stretches the otherness of front and back display picture sophistication.
Fourth embodiment of the invention also provides a kind of pixel limiting structure, and Fig. 9 is the picture that fourth embodiment of the invention provides
The overlooking structure diagram of plain limiting structure, different from the first embodiment, in the Y direction, limit the first of pixel openings
Pixel limited section is interconnected to constitute continuous film layer, and the second pixel limited section for limiting adjacent pixel opening is interconnected to constitute company
Continuous film layer.It is described in detail below with reference to attached drawing, will not be described in detail below the part being identical with the first embodiment.
With reference to Fig. 9, pixel limiting structure provided in this embodiment includes: the first pixel confining layer 401, first pixel
Confining layers 401 include the first pixel limited section 411 and the first extension section 421 connecting with first pixel limited section 411；
The second pixel confining layer 402 being oppositely arranged with first pixel confining layer 401, second pixel confining layer 402 include
Second pixel limited section 412 and the second stretching 422 being connect with second pixel limited section 412；Wherein, described first
Pixel limited section 411 and second pixel limited section 412 limit pixel openings I jointly, first extension section 421 with it is described
Second extension section 422 is located at the opposite two sides same pixel openings I, and opposite in addition in the same pixel openings I
First pixel limited section 411 described in two sides has overlay region with second pixel limited section 412.
The pixel limiting structure has multiple pixel openings I, and the multiple pixel openings I is in X direction and Y-direction
Array distribution.
Different from the first embodiment in the present embodiment, in Y-direction, i.e., for same row pixel openings I and
Speech, the first pixel limited section 411 for limiting adjacent pixel opening I are interconnected to constitute continuous film layer, limit the adjacent pixel
The second pixel limited section 412 of opening I is interconnected to constitute continuous film layer.
During stretching the pixel limited section in X direction, the first pixel limited section 411 of continuous film layer is along the side Y
It is not susceptible to deformation upwards, the second pixel limited section 411 of continuous film layer is being not susceptible to deformation in Y-direction, thus more has
Conducive to prevent during stretching the width dimensions of pixel openings I in the Y direction become smaller, guarantee the pixel during stretching
Opening I area effectively increases.
Correspondingly, the present embodiment also provides a kind of OLED structure including above-mentioned pixel limiting structure.The related OLED
The detailed description of structure can refer to the respective description of previous embodiment, and details are not described herein.
Correspondingly, the present embodiment also provides a kind of display panel including above-mentioned OLED structure.
OLED structure provided by the invention, using the pixel limiting structure with special construction, before facilitating compensating for stretching
The otherness of light emission luminance afterwards, and the display picture sophistication for stretching front and back is compensated, to avoid the occurrence of light emission luminance after stretching
Problem dimmed and that display picture sophistication is roughening；When OLED structure includes drawing zone and non-stretching area, the present invention is mentioned
The OLED structure of confession can reduce the difference between drawing zone and the light emission luminance in non-stretching area, and reduce drawing zone with it is non-stretching
Difference between the display picture sophistication in area.
It will be understood by those skilled in the art that the respective embodiments described above are to realize specific embodiments of the present invention,
And in practical applications, can to it, various changes can be made in the form and details, without departing from the spirit and scope of the present invention.
Anyone skilled in the art can be made respectively to change and modify, therefore this hair without departing from the spirit and scope of the present invention
Bright protection scope should be subject to claim restriction range.
Claims (10)
1. a kind of pixel limiting structure characterized by comprising
First pixel confining layer, first pixel confining layer include the first pixel limited section and limit with first pixel
First extension section of portion's connection；
The second pixel confining layer being oppositely arranged with first pixel confining layer, second pixel confining layer include the second picture
Plain limited section and the second extension section being connect with second pixel limited section；
Wherein, first pixel limited section and second pixel limited section limit pixel openings jointly, and described first stretches
Portion and second extension section two sides that be located at same pixel openings opposite, and in opposite another of the same pixel openings
First pixel limited section described in outer two sides and second pixel limited section have overlay region.
2. pixel limiting structure according to claim 1, which is characterized in that the shape of first extension section is S-shaped item
Shape；The shape of second extension section is S-shaped strip.
3. pixel limiting structure according to claim 1 or 2, which is characterized in that the quantity of the pixel openings be it is multiple,
And the multiple pixel openings are distributed along first direction and second direction array, the first direction is vertical with second direction；
Along first direction, first extension section is alternatively arranged with second extension section, and limits the adjacent pixel openings
The first pixel limited section be connected to same first extension section, limit the second pixel limited section connection of the adjacent pixel openings
To same second extension section.
4. pixel limiting structure according to claim 3, which is characterized in that along the first direction, limit adjacent
First pixel limited section of the pixel openings is oppositely arranged, and the second pixel limited section for limiting the adjacent pixel openings is opposite
Setting.
5. pixel limiting structure according to claim 1, which is characterized in that for the same pixel openings, described
The shape of at least one of one pixel limited section or the second pixel limited section is closed ring.
6. pixel limiting structure according to claim 3, which is characterized in that in the second direction, limit adjacent
First pixel limited section of the pixel openings is isolated from each other, and limits the second pixel limited section phase of the adjacent pixel openings
Mutually keep apart.
7. pixel limiting structure according to claim 6, which is characterized in that first pixel confining layer further include: with
The first of first pixel limited section connection stretches limiting unit, and described first, which stretches limiting unit, limits the pixel openings in institute
The deformation in second direction is stated, described first stretches the restriction site two sides opposite in the pixel openings；Second pixel
Confining layers further include: second connect with second pixel limited section stretches limiting unit, and described second stretches limiting unit limitation
The deformation of the pixel openings in a second direction, described second stretches the restriction site two sides opposite in the pixel openings；
Preferably, the first stretching limiting unit includes: the first short side connecting with the first pixel limited section and described first
Short side the first long side connected vertically, the first long side extending direction are identical as the first extension section extending direction；Described second
It includes: the second short side connecting with second pixel limited section and connected vertically with second short side for stretching limiting unit
Second long side, the second long edge direction are identical as the second extension section extending direction.
8. pixel limiting structure according to claim 3, which is characterized in that in this second direction, limit adjacent institute
The the first pixel limited section for stating pixel openings is interconnected to constitute continuous film layer, limits the second pixel of the adjacent pixel openings
Limited section is interconnected to constitute continuous film layer.
9. a kind of OLED structure characterized by comprising
Array substrate；
Positioned at the first electrode of the array substrate side, multiple luminescence units, picture as claimed in any one of claims 1 to 8
Plain limiting structure and the second electrode being oppositely arranged with the first electrode, pixel limiting structure interval are adjacent described
Luminescence unit；
Wherein, the pixel openings expose the first electrode part of the surface, and the luminescence unit is located at first exposed
Electrode surface；
Preferably, on perpendicular to the first electrode surface direction, the section shapes of the pixel openings is inverted trapezoidal, and institute
It states luminescence unit and also covers pixel openings partial sidewall surface；Alternatively, the luminescence unit is also located at the first electrode
Between the pixel limiting structure.
10. a kind of display panel, which is characterized in that including OLED structure as claimed in claim 9.
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| TWI767475B (en) * | 2020-12-22 | 2022-06-11 | 大陸商業成科技（成都）有限公司 | Display and manufacturing method thereof |
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| US20210118967A1 (en) * | 2019-04-24 | 2021-04-22 | Boe Technology Group Co., Ltd. | Array substrate and manufacturing method thereof, display panel and display apparatus |
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| CN112713171A (en) * | 2019-10-24 | 2021-04-27 | 乐金显示有限公司 | Stretchable display device |
| CN111514466A (en) * | 2020-04-30 | 2020-08-11 | 北京夏禾科技有限公司 | Phototherapy shaping clothes |
| CN111514466B (en) * | 2020-04-30 | 2022-06-24 | 北京夏禾科技有限公司 | Phototherapy shaping clothes |
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| TWI767475B (en) * | 2020-12-22 | 2022-06-11 | 大陸商業成科技（成都）有限公司 | Display and manufacturing method thereof |
| CN113470560A (en) * | 2021-06-30 | 2021-10-01 | 合肥维信诺科技有限公司 | Stretchable display panel and brightness control method thereof |
| CN113470560B (en) * | 2021-06-30 | 2023-08-29 | 合肥维信诺科技有限公司 | Stretchable display panel and brightness control method thereof |
| CN114927068A (en) * | 2022-06-30 | 2022-08-19 | 合肥维信诺科技有限公司 | Stretchable display panel, display driving method thereof and display device |
| CN114927068B (en) * | 2022-06-30 | 2023-11-21 | 合肥维信诺科技有限公司 | Stretchable display panel, display driving method thereof and display device |
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