CN114649395A - Pixel unit, pixel arrangement structure, light emitting device, mask and display device - Google Patents

Abstract

The application provides a pixel unit, pixel arrangement structure, light emitting device, mask and display device, its pixel unit includes: the area is decreased progressively and the material life is increased progressively first subpixel, second subpixel and third subpixel, these three subpixels make up each other and form two subpixel pairs, the subpixel with bigger area surrounds the subpixel with smaller area in each subpixel pair, this application combines the first subpixel, second subpixel and third subpixel that the area is decreased progressively and the life is increased progressively, surround the subpixel with small area through the subpixel with large area, and then can arrange the pixel space in standard red green blue and blue through changing the size of the subpixel of different colors, adopt and arrange the way differently with the existing pixel, make the life of different materials achieve unanimity as far as possible, balance each color luminance through the current control, can reach the same display effect with standard red green blue and green arrangement way while solving the screen life.

Description

Pixel unit, pixel arrangement structure, light emitting device, mask and display device

Technical Field

The application relates to the technical field of display, in particular to a pixel unit, a pixel arrangement structure, a light-emitting device, a mask and a display device.

Background

With the development of Display technology, the Display effect of a Display device is required to be higher and higher, and the Display effect of the Display device is positively correlated with the number of pixels included in the Display device, and for an LCD (Liquid Crystal Display), a standard RGB pixel arrangement can be adopted, but for an OLED (Organic Light Emitting Display), since the Light Emitting material of the OLED is an Organic substance, it is necessary to consider the Display effect and also consider the life of the Organic Light Emitting material.

In the related art, a display device includes a plurality of pixels arranged in an array, each pixel includes a red sub-pixel, a green sub-pixel, and a blue sub-pixel, and the current common arrangement modes mainly include a P arrangement (Pentile arrangement), a diamond arrangement, a D arrangement (Delta arrangement), a Pearl arrangement (Pearl arrangement), and a 2in1 arrangement, which are difficult to consider both the pixel life and the display effect, and have many disadvantages.

Disclosure of Invention

The application provides a pixel unit, a pixel arrangement structure, a light-emitting device, a mask and a display device, and aims to solve the problem that the pixel arrangement is difficult to take account of the service life of a pixel and the display effect.

An embodiment of a first aspect of the present application provides a pixel unit, including: the pixel structure comprises a first sub-pixel, a second sub-pixel and a third sub-pixel, wherein the area of the first sub-pixel, the area of the second sub-pixel and the area of the third sub-pixel are gradually decreased, the service life of the first sub-pixel, the service life of the second sub-pixel and the service life of the third sub-pixel are gradually increased, the three sub-pixels are mutually combined to form two sub-pixel pairs, and each sub-pixel pair surrounds the sub-pixel with the larger area to form the sub-pixel with the smaller area.

In an alternative embodiment, one of the sub-pixel pairs includes a first sub-pixel and a second sub-pixel, and the other sub-pixel pair includes a first sub-pixel and a third sub-pixel.

In an alternative embodiment, one of the sub-pixel pairs includes a first sub-pixel and a second sub-pixel, and the other sub-pixel pair includes a second sub-pixel and a third sub-pixel.

In an optional embodiment, the second sub-pixel and the third sub-pixel are block-shaped structures, and the first sub-pixel is surrounded at the outer sides of the second sub-pixel and the third sub-pixel; wherein the second sub-pixel and the third sub-pixel include outer side edges that contact each other, or a gap is formed between the second sub-pixel and the third sub-pixel.

In an alternative embodiment, the first sub-pixel and the second sub-pixel are in a closed strip structure, the second sub-pixel surrounds the outer side of the third sub-pixel, and the first sub-pixel surrounds the outer side of the second sub-pixel.

In an alternative embodiment, each of the third sub-pixel and the second sub-pixel is one of a rectangle, a circle, and an ellipse.

In an alternative embodiment, the second sub-pixel and the first sub-pixel are each one of a circular ring shape, an elliptical ring shape, a racetrack shape, and a zigzag shape.

In an optional embodiment, the third sub-pixel is rectangular, an inner side edge of the second sub-pixel is attached to an edge of the third sub-pixel, and an inner side edge of the first sub-pixel is attached to an outer side edge of the second sub-pixel.

In an alternative embodiment, the service lives of the materials of the first sub-pixel, the second sub-pixel and the third sub-pixel are sequentially increased.

In an alternative embodiment, the first sub-pixel is a blue sub-pixel, the second sub-pixel is a red sub-pixel, and the third sub-pixel is a green sub-pixel.

In a second aspect, an embodiment of the present application provides a pixel arrangement structure, which includes a plurality of pixel units arranged in an array, where each pixel unit is as described above.

An embodiment of a third aspect of the present application provides a mask device, which includes at least one mask plate, where the at least one mask plate is used to manufacture the pixel arrangement structure, and each mask plate includes: the pixel structure comprises a substrate and an opening region which is positioned on the substrate and corresponds to at least one sub-pixel in the pixel arrangement structure.

An embodiment of a fourth aspect of the present application provides a light emitting device including a substrate base plate and a pixel arrangement structure as shown above on the substrate base plate.

Embodiments of the fifth aspect of the present application provide a display apparatus comprising the organic electroluminescent device as shown above.

According to the technical scheme, the pixel unit, the pixel arrangement structure, the light emitting device, the mask and the display device are provided, the first sub-pixel, the second sub-pixel and the third sub-pixel are configured with progressively decreasing areas and progressively increasing service lives, the large-area sub-pixel is combined to surround the small-area sub-pixel, the effective light emitting life of the sub-pixels made of materials with different service lives can be consistent as far as possible by changing the sizes of the sub-pixels with different colors in a standard RGB arrangement pixel space and adopting an arrangement mode different from that of the existing pixels, the brightness of each color is balanced through current control, and the display effect same as that of the standard RGB arrangement mode can be achieved while the service life of a screen is prolonged.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic diagram of a pixel arrangement in an exemplary technique.

Fig. 2 is a second schematic diagram of a pixel arrangement in an example technology.

Fig. 3 is a schematic diagram of a pixel unit structure in the embodiment of the present application.

Fig. 4 is a second schematic diagram of a pixel unit structure in the embodiment of the present application.

Fig. 5 is a third schematic view of a pixel unit structure in the embodiment of the present application.

Fig. 6 is a fourth schematic diagram of a pixel unit structure in the embodiment of the present application.

Fig. 7 is a fifth schematic view of a pixel unit structure in the embodiment of the present application.

Fig. 8 is a sixth schematic view of a pixel unit structure in the embodiment of the present application.

Fig. 9 is a schematic diagram of a pixel arrangement structure formed by the pixel unit of fig. 8 in the embodiment of the present application.

Fig. 10 is one of schematic structural diagrams of the mask corresponding to fig. 9 in the embodiment of the present application.

Fig. 11 is a second schematic structural diagram of the mask plate corresponding to fig. 9 in the embodiment of the present application.

Fig. 12 is a third schematic structural diagram of the mask plate corresponding to fig. 9 in the embodiment of the present application.

Fig. 13 is a fourth schematic structural diagram of the mask plate corresponding to fig. 9 in the embodiment of the present application.

Fig. 14 is a schematic structural diagram of a display device in an embodiment of the present application.

Reference numerals:

in fig. 1: 101-red sub-pixel; 102-green sub-pixel; 103-blue sub-pixel;

in fig. 2: 201-blue sub-pixel, 202-red sub-pixel, 203-green sub-pixel;

in fig. 3 to 9: 301-a first sub-pixel, 302-a second sub-pixel, 303-a third sub-pixel; 304-white sub-pixel; 3-pixel cells;

in fig. 10: 100-first zone, 200-second zone, 300-third zone;

in fig. 11 to 13: 10-a mask plate corresponding to the first sub-pixel, 20-a mask plate corresponding to the second sub-pixel, and 30-a mask plate corresponding to the third sub-pixel;

in fig. 14: 20-display device, 21-trace, 22-drive circuit, 23-pixel unit.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise. It should be noted that the pixel unit, the pixel arrangement structure, the light emitting device, the mask and the display device disclosed in the present application can be used in the field of display technology, and can also be used in any field other than the field of display technology.

Fig. 1 shows a schematic diagram of a Pentile array according to one of the exemplary technologies, where the Pentile array is modified from a standard RGB, and a blue pixel in1 pixel is twice as large, the area is increased, the lifetime is prolonged, because the human eye is more sensitive to green, and in order to balance the color display effect, the red sub-pixel is also twice as large, and 1 pixel in the Pentile array is still composed of three sub-pixels of red 101, blue 103, and green 102, so that the effective pixel in the same area is about 60% of the standard RGB pixel. I.e. the display granularity is coarser than the standard RGB pixel arrangement.

Fig. 2 shows a schematic diagram of an RGB Delta arrangement of a second example technology, the RGB Delta arrangement is similar to Pentile, but the areas of the red sub-pixel 202, the green sub-pixel 203 and the blue sub-pixel 201 are the same, but in the same display area, the number of sub-pixels of three colors in the RGB Delta arrangement is reduced by one third compared to the standard RGB arrangement, each real pixel is in R-G, G-B or B-R arrangement, six sub-pixels share one surrounding sub-pixel to form 3-4 pixel units (e.g. 7 sub-pixels formed by bold dotted lines in fig. 2, the middle sub-pixel is shared by six sub-pixels surrounding the sub-pixel, i.e. 3-4 pixel units are formed, e.g. the middle sub-pixel is taken as a common pixel, two sub-pixels 11 and the common pixel form one pixel unit, two sub-pixels 22 and the common pixel form one pixel unit, two sub-pixels 33 constitute one pixel unit with the common pixel) the actual pixel density is further reduced by PenTile, which is about only 60-70% of the standard RGB arrangement, and the display fineness is low.

Fig. 3 to 8 illustrate a minimum unit forming a pixel arrangement structure in the embodiment of the present application, that is, a pixel unit, and in the field of display technology, the pixel unit in the pixel arrangement structure is arranged in an array.

A pixel unit provided by an embodiment of an aspect of the present application is first described in detail with reference to the content shown in fig. 3.

As shown in fig. 3, each pixel unit includes a first sub-pixel 301, a second sub-pixel 302, and a third sub-pixel 303 with decreasing area and increasing material lifetime, and the three sub-pixels are combined with each other to form two sub-pixel pairs (the first sub-pixel 301 and the second sub-pixel 302 in fig. 3 form one sub-pixel pair, and the first sub-pixel 301 and the third sub-pixel 303 form one sub-pixel pair), and the sub-pixel with larger area in each sub-pixel pair surrounds the sub-pixel with smaller area.

It can be understood that the present application is generally applied to OLED displays, the material forming each sub-pixel in the present application is an organic light emitting material, and the organic light emitting material is generally an organic molecule rich in carbon atoms and having a large pi conjugated system, and details are not described herein.

In this application, the material life is the effective service life of the light-emitting material, that is, the luminance of the light-emitting material after constant voltage current is applied continuously decreases to the duration of being lower than a luminance threshold value along with the time, for example, after a certain organic light-emitting material is applied for 1000 hours after constant current, the luminance is lower than a preset luminance threshold value, so that the material life is 1000 hours, it can be understood that the light-emitting materials of different sub-pixels are different, and further, the material life is also different, which is not described herein.

For the conventional LCD technology, the backlight source is provided, the light-adjusting material for adjusting the light emitted from the backlight source is liquid crystal, and for the convenience of the process, the sub-pixels are mostly made of the same material, and the sub-pixels with different colors are displayed by color films corresponding to the colors. In some alternative embodiments, the sub-pixels are made of materials with different lifetimes from the liquid crystal in the LCD panel, and therefore the present application may also be applied to such LCD panels, and is not limited herein.

It is understood that, in the present application, a pixel unit is the smallest integrated unit that forms a pixel arrangement, that is, the pixel arrangement includes a plurality of pixel units arranged in a specific arrangement manner, each pixel unit is electrically connected to a driving IC (integrated circuit) through an independent driving line, and the driving IC drives sub-pixels in the pixel unit to be powered on to emit color light.

It can be known that, in the present application, one pixel unit includes at least a first sub-pixel, a second sub-pixel, and a third sub-pixel. For example, in the embodiment of fig. 3, the pixel unit includes a blue sub-pixel 301, a red sub-pixel 302, and a green sub-pixel 303.

In some alternative embodiments, one pixel unit may include a first sub-pixel, a second sub-pixel, a third sub-pixel, and a fourth sub-pixel.

As is apparent from the above embodiments, the colors of the first sub-pixel, the second sub-pixel, the third sub-pixel, and the fourth sub-pixel (some embodiments) may be: red, blue, green and other colors, which may be different from each of red, blue and green, such as white, green or cyan. It should be noted that, if the other color is white, the display brightness of the display device where the pixel arrangement structure is located can be improved; if the other color is another color, the color gamut of the display device in which the pixel arrangement structure is located can be increased.

For example, the color of the first sub-pixel may be blue, the color of the second sub-pixel may be red, the color of the third sub-pixel may be green, and the color of the fourth sub-pixel may be white; optionally, the color of the first sub-pixel may be red, the color of the second sub-pixel may be blue, the color of the third sub-pixel may be green, and the color of the fourth sub-pixel may be green, for example, as shown in fig. 4, the pixel unit includes a blue sub-pixel 301, a red sub-pixel 302, a green sub-pixel 303, and a white sub-pixel 304, which is not limited in this embodiment of the application.

Illustratively, for organic light emitting materials, the material lifetime is in order from long to short: the green sub-pixel, the red sub-pixel and the blue sub-pixel, therefore, the area of the blue sub-pixel is the largest, and the area of the red sub-pixel is the next to the area of the green sub-pixel.

The sub-pixels with larger areas in the sub-pixel pairs surround the sub-pixels with smaller areas, one sub-pixel pair comprises a first sub-pixel and a second sub-pixel, and the other sub-pixel pair comprises a first sub-pixel and a third sub-pixel.

In this embodiment, as shown in fig. 3, for example, by using the blue sub-pixel 301 as the first sub-pixel, the red sub-pixel 302 as the second sub-pixel, and the green sub-pixel 303 as the third sub-pixel, the blue sub-pixel 301 needs to surround the red sub-pixel 302 to form one sub-pixel pair, and the blue sub-pixel 301 needs to surround the green sub-pixel 303 to form another sub-pixel pair, that is, the blue sub-pixel 301 surrounds the red sub-pixel 302 and the green sub-pixel 303, and at this time, the red sub-pixel 302 and the green sub-pixel 303 do not form the sub-pixel pair, and both sub-pixels are located in the blue sub-pixel 301.

Referring to fig. 5, in order to increase the aperture ratio of the OLED display, the pixel area may be increased, and the area space defined by each pixel unit, that is, the gap between each sub-pixel is minimal or no gap, at this time, the second sub-pixel 302 and the third sub-pixel 303 may be fabricated to form a block structure, so that the second sub-pixel 302 and the third sub-pixel 303 may be attached together, the first sub-pixel 301 surrounds the second sub-pixel 302 and the third sub-pixel 303, at this time, the second sub-pixel 302 and the third sub-pixel 303 include outer edges (shown in fig. 5) that are in contact with each other, or a gap (shown in fig. 3) is formed between the second sub-pixel 302 and the third sub-pixel.

Illustratively, the third sub-pixel and the second sub-pixel are made to form one of a rectangle, a diamond, a circle, and an ellipse, for example, the second sub-pixel is a rectangle, the third sub-pixel is a rectangle, and there are edges in contact with each other (i.e., the above-mentioned attaching) between the two, although the two are rectangles together, the side lengths of the two are different, or for example, as shown in fig. 6, the third sub-pixel 303 and the second sub-pixel 302 are made to be a circle, but the diameter of the circle is different, and the first sub-pixel 301 surrounds the second sub-pixel 302 and the third sub-pixel 303, that is, the area difference between the second sub-pixel and the third sub-pixel is reflected.

For example, not shown in the figure, the third sub-pixel is made into a circular shape, the second sub-pixel is made into an oval shape, and a gap is formed between the third sub-pixel and the second sub-pixel, so that the heat dissipation problem during power-on is considered, and the third sub-pixel can be used in a scene with a high heat dissipation requirement, such as a customized display screen in a high-temperature working environment.

In a preferred embodiment of the present application, one of the sub-pixel pairs includes a first sub-pixel and a second sub-pixel, and the other sub-pixel pair includes a second sub-pixel and a third sub-pixel.

As shown in fig. 7, the first sub-pixel 301 surrounds the second sub-pixel 302, e.g. the blue sub-pixel surrounds the red sub-pixel, and the second sub-pixel 302 surrounds the third sub-pixel 303, e.g. the red sub-pixel surrounds the green sub-pixel.

In this embodiment, a hierarchical nesting manner is different from the manner in which the second sub-pixel and the third sub-pixel are surrounded by the first sub-pixel side by side, and the embodiment can perform area control by changing the "diameter" or the "diagonal length" of the three sub-pixels, so that on one hand, control parameters can be standardized, and masking can be performed by a standardized mask plate during manufacturing, thereby simplifying the manufacturing process, and meanwhile, by a mutual nesting manner, the area space defined by the maximum area pixel (i.e., the first sub-pixel) can be fully utilized, the aperture ratio is improved, and the area calculation of each sub-pixel is more convenient.

Illustratively, as shown in fig. 7, the second sub-pixel and the third sub-pixel are configured as a closed strip-shaped structure in this embodiment, i.e. a shape formed by connecting strip-shaped strips end to end, and the circular ring shape is also in one of the closed strip-shaped structures, in some alternative embodiments, as shown in fig. 7, the first sub-pixel 301 is a circular ring shape, and correspondingly, the second sub-pixel 302 is a circular ring shape, and the third sub-pixel 303 is a circular ring shape, and the centers of the three sub-pixels are the same.

It should be understood that the first to third sub-pixels may be made into a shape associated with each other based on process portability and process standardization considerations, for example, as shown in fig. 8, the third sub-pixel 303 is rectangular, the inner edge of the second sub-pixel 302 is attached to the edge of the third sub-pixel 303, and the inner edge of the first sub-pixel 301 is attached to the outer edge of the second sub-pixel 302. When the third sub-pixel 303 is square, i.e. the second sub-pixel 302 and the first sub-pixel 301 are made to be "back" shaped, so that after the second sub-pixel 302 surrounds the third sub-pixel 303, a new square is formed, which facilitates the first sub-pixel 301 to surround in the same way.

In a preferred embodiment, the first sub-pixels are rectangular, the pixel units formed at this time are rectangular, and when pixels are arranged, the pixel units are mutually attached and are respectively and sequentially arranged along the horizontal direction and the vertical direction, so that the largest number of pixel units can be placed in the display area of the whole display panel, the pixel density is ensured, and the resolution ratio is improved.

Furthermore, based on the size of the existing standard RGB arrangement space, the outer side edge of the first sub-pixel is manufactured according to the standard RGB arrangement space, so that the three sub-pixels are limited in the standard RGB arrangement space, and the resolution ratio which is the same as that of the existing standard RGB arrangement is ensured.

To sum up, the pixel unit provided in the embodiment of the present application, by configuring the first sub-pixel, the second sub-pixel, and the third sub-pixel with decreasing area and increasing lifetime, combines the large-area sub-pixel to surround the small-area sub-pixel, and further can change the size of the sub-pixels with different colors in the standard RGB arrangement pixel space, and adopt an arrangement different from the existing pixels, so that the effective light emitting durations of the sub-pixels with different lifetime materials are as consistent as possible, and balance the brightness of each color through current control, thereby achieving the same display effect as the standard RGB arrangement while solving the service life of the screen.

It is obvious to those skilled in the art that the pixel unit is the smallest integrated unit constituting the pixel arrangement structure, that is, in another embodiment of the present application, a pixel arrangement structure is further provided, and the pixel arrangement structure includes the pixel units arranged in an array.

Illustratively, a gap or a close fit may be formed between each pixel unit, for example, each pixel unit 3 in fig. 9 is a close fit, each pixel unit 3 includes a first sub-pixel 301, a second sub-pixel 302 and a third sub-pixel 303 with decreasing area and increasing material lifetime, the three sub-pixels are combined with each other to form two sub-pixel pairs, and the sub-pixel with the larger area in each sub-pixel pair surrounds the sub-pixel with the smaller area.

Since the pixel arrangement structure is configured with the pixel units arranged in an array, the technical effect corresponding to the pixel units can be achieved, which is not described herein again.

Fig. 10 to 12 are schematic structural diagrams of different mask plates provided in a mask device according to an embodiment of the present invention. The mask apparatus may be used to manufacture the pixel arrangement structure shown in fig. 9, and the mask apparatus may include: a mask having a plurality of openings corresponding to the first sub-pixel, the second sub-pixel, the third sub-pixel and the fourth sub-pixel (some embodiments) (the opening corresponding to the first sub-pixel is the first region 100; the opening corresponding to the second sub-pixel is the second region 200; and the opening corresponding to the third sub-pixel is the third region 300), and each opening is used for manufacturing the corresponding sub-pixel.

For example, the mask device may include a plurality of mask plates, the number of the mask plates corresponds to the number of the sub-pixels one by one, as shown in fig. 11 to 13, the mask device may include: three mask plates corresponding to the first sub-pixels, the second sub-pixels and the third sub-pixels one by one: the first sub-pixel corresponds to the mask 10, the second sub-pixel corresponds to the mask 20, and the third sub-pixel corresponds to the mask 30.

Or the number of the mask plates is less than that of the sub-pixels, for example, the number of the mask plates is two, the number of the sub-pixels is three, and the two mask plates have a plurality of openings corresponding to the first sub-pixel, the second sub-pixel, the third sub-pixel or the fourth sub-pixel (in some embodiments), and each opening is used for manufacturing the corresponding sub-pixel.

For example, fig. 11 to 13 respectively show three masks used for manufacturing the pixel arrangement structure shown in fig. 9, in which fig. 11 shows a mask 10 corresponding to a first sub-pixel 301 in the sub-pixel arrangement structure 3 shown in fig. 9, fig. 12 shows a mask 20 corresponding to a second sub-pixel 302 in the sub-pixel arrangement structure 3 shown in fig. 9, and fig. 13 shows a mask 30 corresponding to a third sub-pixel 303 in the sub-pixel arrangement structure shown in fig. 9. As shown in fig. 11 to 13, the mask plates 10 corresponding to the first sub-pixels 301 may each have a square opening, the mask plates 20 corresponding to the second sub-pixels 302 may each have a square opening, and the mask plates 30 corresponding to the third sub-pixels 303 may each have a rectangular opening.

Not shown in the figure, the mask plates corresponding to the first sub-pixels may all have circular openings, the mask plate corresponding to the second sub-pixels may have circular openings, and the mask plate corresponding to the third sub-pixels may have circular openings, so as to fabricate the pixel structure shown in fig. 7.

It should be noted that, in the embodiment of the present invention, only the sub-pixels in the pixel arrangement structure correspond to the mask plates one to one, optionally, part of different sub-pixels in the pixel arrangement structure may also correspond to the same mask plate, for example, in the embodiment where the second sub-pixel and the third sub-pixel are surrounded by the first sub-pixel together, the second sub-pixel and the third sub-pixel may correspond to the same mask plate, but the second sub-pixel has a larger area than the third sub-pixel, so that when performing the mask process, the second sub-pixel needs to adopt multiple masks.

Illustratively, when specific masking is performed, a first mask plate is used for manufacturing first sub-pixels, so that each opening on the mask plate is over against a formation position of the first sub-pixels, then a second mask plate is used for manufacturing third sub-pixels, so that each opening on the mask plate is over against a formation position of the third sub-pixels, and then positions of the display substrate and the second mask plate are adjusted at least once, so that the second sub-pixels can be manufactured by using the mask plate through multiple masking processes.

In addition, as shown in fig. 10, mask patterns of the first to third sub-pixels may be manufactured on one mask, for example, the mask pattern of the first sub-pixel is set in the first area 100 of the mask, the mask pattern of the second sub-pixel is set in the second area 200 of the mask, and the mask pattern of the third sub-pixel is set in the third area 300 of the mask, so that the first area corresponds to the display substrate by moving the mask to form the first sub-pixel, and then the second area corresponds to the display substrate by moving the mask to form the second sub-pixel, and so on, three sub-pixels or four sub-pixels are formed.

It should be noted that, if different sub-pixels correspond to the same mask, the size of the mask needs to be larger than the size of the pixel arrangement structure, such as the above example.

Optionally, in the three mask plates in the mask device, the area of the opening in the mask plate corresponding to the sub-pixel with the blue color may be larger. In the mask plate of the mask device corresponding to the pixel arrangement structure shown in fig. 10, the area of the opening corresponding to the first sub-pixel may be larger than the area of the opening corresponding to the second sub-pixel, and the area of the opening corresponding to the second sub-pixel may be larger than the area of the opening corresponding to the third sub-pixel.

It should be noted that, as shown in any one of fig. 10 to 13, the openings in the mask plate in the embodiment of the present invention are uniformly distributed, when the pixel arrangement structure is manufactured, a better screen-stretching effect can be achieved, defects such as wrinkles of the mask plate are not likely to occur, and the position accuracy of each sub-pixel in the manufactured sub-pixel structure is higher.

Optionally, the Mask device may further include a Cover Mask (CM), a support Mask (HM), an Alignment Mask (AM), and an assembly frame, where the four Mask plates cooperate with each other to form sub-pixels corresponding to the Mask plate in the pixel arrangement structure.

In summary, in the pixel arrangement structure manufactured by using the mask device provided in the embodiments of the present invention, the first sub-pixel, the second sub-pixel, and the third sub-pixel having decreasing areas and increasing lifetimes are configured, and the large-area sub-pixel is combined to surround the small-area sub-pixel, so that the effective light-emitting durations of the sub-pixels with different materials can be as consistent as possible by changing the sizes of the sub-pixels with different colors in the standard RGB arrangement pixel space and adopting an arrangement different from the existing pixels, and the luminances of the colors are balanced by current control, thereby achieving the same display effect as the standard RGB arrangement while achieving the lifetime of the screen.

The embodiment of the present invention further provides a light emitting device, where the light emitting device may include a substrate and a pixel arrangement structure shown in fig. 9 located on the substrate, or a pixel arrangement structure composed of pixel units shown in any one of fig. 1 to 8, and further, the light emitting device in this embodiment may be an organic electroluminescent device, which is not described herein again.

Further, the present disclosure provides a display panel, a display area of which includes the above Light Emitting device, the display panel may be an Organic Light-Emitting Diode (OLED) display panel, each sub-pixel may include a Light Emitting unit (i.e., an OLED), and the Light Emitting unit of each sub-pixel may directly emit Light with a desired color and brightness; alternatively, the display panel may be a liquid crystal display panel, as in the above embodiment, wherein each sub-pixel includes a filter unit, and the light emitted from the backlight source can be changed into light with desired color and brightness after passing through the filter unit of each sub-pixel, wherein the liquid crystal material of each sub-pixel is different, and the lifetime of each sub-pixel decreases with the increase of the area of the sub-pixel.

If the display panel is an OLED display panel, when the display panel is controlled to display an image, the display panel may receive actual image information to be displayed first, and then the display panel may drive the sub-pixels to display based on the actual image information.

The embodiment of the invention also provides a manufacturing method of the display panel, and the method can be used for manufacturing the display panel.

For example, a pixel defining material layer may be first formed on a substrate and patterned to obtain a pixel defining layer including a plurality of grooves. Then, the substrate with the pixel defining layer and the mask plate can be placed into an evaporation chamber, sub-pixels corresponding to the mask plate are formed on the pixel defining layer by adopting organic materials through evaporation, the mask plate corresponding to each sub-pixel is sequentially used for evaporation, and further a pixel arrangement structure is formed on the pixel defining layer. The pixel arrangement structure may be a pixel arrangement structure as shown in fig. 9, or a pixel arrangement structure including a pixel unit as shown in any one of fig. 1 to 8. It should be noted that the sub-pixels in the embodiments of the present invention are organic materials located in the grooves of the pixel defining layer after the evaporation is completed.

As shown in fig. 14, the display device 20 may include the display panel, and the display panel includes each pixel unit 23, and each pixel unit 23 is connected to the driving circuit 22 through a trace 21, it can be understood that, for convenience of understanding, the driving circuit 22 is independent in fig. 14, and actually, the driving circuit 22 is generally built in the whole display device 20, and redundant description is not repeated here.

In specific implementation, the display device provided in the embodiment of the present invention may be any product or component having a display function, such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, and a navigator.

It should be noted that, the embodiments of the pixel arrangement structure, the mask device, the display panel and the manufacturing method thereof provided by the embodiments of the present invention may all refer to each other, and the embodiments of the present invention do not limit this. The steps of the method for manufacturing a display panel according to the embodiments of the present invention can be increased or decreased according to the circumstances, and any method that can be easily conceived by a person skilled in the art within the technical scope of the present disclosure is covered by the protection scope of the present disclosure, and therefore, the details are not repeated.

The above description is only exemplary of the present application and should not be taken as limiting, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (10)

1. A pixel cell, comprising: the pixel structure comprises a first sub-pixel, a second sub-pixel and a third sub-pixel, wherein the area of the first sub-pixel, the area of the second sub-pixel and the area of the third sub-pixel are gradually decreased, the service life of materials of the first sub-pixel, the second sub-pixel and the third sub-pixel are gradually increased, the first sub-pixel, the second sub-pixel and the third sub-pixel are combined in pairs to form two sub-pixel pairs, and the sub-pixel with the larger area of each sub-pixel pair surrounds the sub-pixel with the smaller area.

2. The pixel cell of claim 1, wherein one of the sub-pixel pairs comprises a first sub-pixel and a second sub-pixel, and the other sub-pixel pair comprises a first sub-pixel and a third sub-pixel; the second sub-pixel and the third sub-pixel are of block structures, and the first sub-pixel is arranged around the outer sides of the second sub-pixel and the third sub-pixel; wherein the second sub-pixel and the third sub-pixel include outer side edges that contact each other, or a gap is formed between the second sub-pixel and the third sub-pixel.

3. The pixel cell of claim 2, wherein the third sub-pixel and the second sub-pixel are each one of rectangular, circular, and elliptical.

4. The pixel cell of claim 1, wherein one of the sub-pixel pairs comprises a first sub-pixel and a second sub-pixel, and the other sub-pixel pair comprises a second sub-pixel and a third sub-pixel; the first sub-pixel and the second sub-pixel are of a closed belt-shaped structure, the second sub-pixel surrounds the outer side of the third sub-pixel, and the first sub-pixel surrounds the outer side of the second sub-pixel.

5. The pixel cell of claim 4, wherein the second sub-pixel and the first sub-pixel are each one of circular, elliptical, racetrack, and square.

6. The pixel cell of claim 4, wherein the third sub-pixel is rectangular, the inner edge of the second sub-pixel is attached to the edge of the third sub-pixel, and the inner edge of the first sub-pixel is attached to the outer edge of the second sub-pixel.

7. A pixel arrangement structure comprising a plurality of pixel units arranged in an array, each of the pixel units being as claimed in any one of claims 1 to 6.

8. A light emitting device comprising a substrate base and the pixel arrangement structure according to claim 7 on the substrate base.

9. A mask device characterized by comprising at least one mask plate for manufacturing the pixel arrangement structure according to claim 7, and each mask plate comprising: the pixel structure comprises a substrate and an opening region which is positioned on the substrate and corresponds to at least one sub-pixel in the pixel arrangement structure.

10. A display device characterized by comprising the light-emitting device according to claim 8.

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