CN106449710B - Dot structure and OLED display panel comprising the dot structure - Google Patents
Dot structure and OLED display panel comprising the dot structure Download PDFInfo
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- CN106449710B CN106449710B CN201610932723.4A CN201610932723A CN106449710B CN 106449710 B CN106449710 B CN 106449710B CN 201610932723 A CN201610932723 A CN 201610932723A CN 106449710 B CN106449710 B CN 106449710B
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- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/30—Devices specially adapted for multicolour light emission
- H10K59/35—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels
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- 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
- H10K59/30—Devices specially adapted for multicolour light emission
- H10K59/35—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels
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Abstract
The present invention provides a kind of dot structure and include the OLED display panel of the dot structure.The dot structure includes the pixel unit of multiple array arrangements, and each pixel unit includes the first different sub-pixel of color, the second sub-pixel and third sub-pixel；The first sub-pixel and second sub-pixel are arranged in a (row), and the third pixel arrangement is in another a (row)；The sub-pixel of at least one color is shared by two adjacent pixel units, reduce pixel circuit, and, it can be in the case where identical connecting bridge size, increase and the size of opening is deposited on vapor deposition mask plate, thus increase the area of the luminous zone of sub-pixel, or, the size for increasing connecting bridge on vapor deposition mask plate, reduces the difficulty of mask plate manufacture craft and evaporation process.
Description
Technical Field
The invention relates to the technical field of display, in particular to a pixel structure and an OLED display panel comprising the same.
Background
An OLED (Organic Light-Emitting Diode) is an active Light-Emitting device. Compared with the traditional LCD (Liquid Crystal Display) Display mode, the OLED Display technology does not need a backlight lamp and has the self-luminous characteristic. The OLED adopts a thin organic material film layer and a glass substrate, and when a current flows, the organic material can emit light. Therefore, the OLED display panel can save electric energy remarkably, can be made lighter and thinner, can endure a wider range of temperature variation than the LCD display panel, and has a larger visual angle. The OLED display panel is expected to become a next-generation flat panel display technology following the LCD, and is one of the technologies that receives the most attention among the flat panel display technologies at present.
There are many colorization methods for OLED screens, and the OLED colorization technology that is mature and has been successfully mass-produced is mainly the OLED evaporation technology, which uses the conventional RGB Stripe arrangement for evaporation. The best picture effect is the side-by-side (juxtaposition) mode. The side-by-side method is characterized in that three sub-pixels (R, G, B) of red, green and blue are arranged in a Pixel (Pixel) range, each sub-Pixel is quadrilateral and is provided with an independent organic light-emitting component, the organic light-emitting components are formed at corresponding Pixel positions on an array substrate through a high-precision Metal Mask (FMM) by utilizing an evaporation film forming technology, and the high-precision Metal Mask is usually referred to as a Metal Mask or an evaporation Mask for short. The technical focus of fabricating high PPI (Pixel Per Inch, number of pixels) OLED display panels is on the FMM with fine and mechanical stability and the arrangement of the pixels (sub-pixels).
Fig. 1A is a schematic diagram of a pixel arrangement of an OLED display panel in the prior art. As shown in fig. 1A, the OLED display panel adopts a Pixel juxtaposition manner, each Pixel unit Pixel includes an R sub-Pixel region 101, a G sub-Pixel region 103 and a B sub-Pixel region 105, wherein the R sub-Pixel region 101 includes an R emitting region 102 and an R non-emitting region (not numbered), the G sub-Pixel region 103 includes a G emitting region 104 and a G non-emitting region (not numbered), and the B sub-Pixel region 105 includes a B emitting region 106 and a B non-emitting region (not numbered). The R, G, B subpixels shown in FIG. 1A have equal areas of area and light emitting area, respectively, and R, G, B subpixels are arranged in a straight line. Specifically, in the light emitting region of each sub-pixel region, a cathode electrode, an anode electrode, and an electroluminescent layer (also referred to as an organic emission layer) between the cathode electrode and the anode electrode for generating light of a predetermined color to realize display are included. In the preparation of the display panel in the prior art, three times of evaporation processes are generally required to form electroluminescent layers of corresponding colors (red, green or blue) in the light-emitting regions of the pixel regions of the corresponding colors, respectively.
The OLED display panel shown in fig. 1A is usually vapor-deposited by using the FMM shown in fig. 1B, which includes a shielding region 107 and a plurality of vapor deposition openings 108, and the shielding region between two adjacent vapor deposition openings 108 in the same column is called a bridge (bridge). In order to avoid the shielding effect on the sub-pixels during evaporation, a sufficient distance must be kept between the sub-pixels and the bridge, which results in the reduction of the length of the sub-pixels above and below, and affects the aperture ratio of each sub-pixel. With the increasing demand of users for the resolution of the OLED display panel, the RGB pixel juxtaposition method has not been able to meet the design requirement of high PPI of the product.
Fig. 2A is a schematic diagram of a pixel arrangement of another OLED display panel in the prior art. As shown in fig. 2A, each Pixel unit Pixel includes an R sub-Pixel region 201, a G sub-Pixel region 203 and a B sub-Pixel region 205, wherein the R sub-Pixel region 201 includes an R emitting region 202 and an R non-emitting region, the G sub-Pixel region 203 includes a G emitting region 204 and a G non-emitting region, and the B sub-Pixel region 205 includes a B emitting region 206 and a B non-emitting region.
Fig. 2B is a schematic diagram of an FMM corresponding to the R sub-pixel or the G sub-pixel of fig. 2A, wherein the FMM includes a shielding region 207 and an evaporation opening 208. Fig. 2C is a schematic diagram of an FMM corresponding to the B sub-pixel of fig. 2A, which includes a shielding region 209 and an evaporation opening 210. In this pixel arrangement, the pixels are periodically translated horizontally and vertically to form a row and column pixel array. The opening space of the evaporation mask plate corresponding to the red and green sub-pixels is relatively large, and high PPI display can be realized to a certain extent. However, as a result of the above-mentioned periodic arrangement of the pixels, the B sub-pixels in the pixel array form a linear arrangement, and due to the limitation of the FMM fabrication capability, there is a certain requirement for the Bridge (the Bridge must reach a certain size), which affects the further improvement of the aperture ratio of the B sub-pixels.
Fig. 3 is a schematic diagram of a pixel arrangement of another OLED display panel in the prior art. As shown in fig. 3, each pixel unit includes an R sub-pixel, a G sub-pixel, and a B sub-pixel, and two adjacent pixel units in the row direction are arranged in a mirror symmetry manner, and at the same time, two adjacent pixel units in the column direction are also arranged in a mirror symmetry manner, and this arrangement structure is also referred to as V-delta pixel arrangement. However, the applicant has found that in such an arrangement, each pixel unit still includes three sub-pixels with different colors, and the number of pixel circuits is large. In addition, the non-light emitting region between adjacent R sub-pixels or between adjacent G sub-pixels occupies a certain area, which limits further improvement of PPI. In addition, B subpixel is the rectangle structure, the coating by vaporization opening of coating by vaporization mask board is longer in length direction, the coating by vaporization mask board is easy to receive the influence of magnet board magnetic line of force direction and warp in the use, cause different colour material mutual contamination and colour mixture between the subpixel, the production yield of product is lower, and, this kind of coating by vaporization mask board is using, wash and keep the in-process also easy impaired deformation, reuse rate is not high, because the coating by vaporization mask board is with high costs, so the screen body cost of this kind of mode preparation is also higher.
Disclosure of Invention
The present invention is directed to a pixel structure and an OLED display panel, so as to solve the problems in the prior art.
In order to solve the above technical problem, the present invention provides a pixel structure, including a plurality of pixel units arranged in an array, each pixel unit including a first sub-pixel, a second sub-pixel and a third sub-pixel with different colors; the first sub-pixel and the second sub-pixel are arranged in one column, and the third sub-pixel is arranged in the other column; or the first sub-pixel and the second sub-pixel are arranged in one row, and the third sub-pixel is arranged in the other row; wherein, the sub-pixel of at least one color is shared by two adjacent pixel units.
Optionally, the sub-pixel of one color is shared by two adjacent pixel units in the row direction or the column direction; or, the sub-pixels of two colors are shared by two adjacent pixel units in the row direction or the column direction; alternatively, the sub-pixel of one color is shared by two pixel units adjacent in the row direction, and the sub-pixel of the other color is shared by two pixel units adjacent in the column direction.
Optionally, two adjacent pixel units on the same row are used as a pixel group, two pixel units in the same pixel group are in mirror symmetry, two adjacent rows of pixel units on the same column are in mirror symmetry, and first sub-pixels and second sub-pixels in the adjacent pixel groups on the same row are arranged in a staggered manner; or two adjacent pixel units on the same column are used as a pixel group, two pixel units in the same pixel group are in mirror symmetry, pixel units in two adjacent columns on the same row are in mirror symmetry, and first sub-pixels and second sub-pixels in the adjacent pixel groups on the same column are arranged in a staggered mode.
Optionally, the first sub-pixels of the adjacent four pixel units are formed by using the same first sub-pixel evaporation openings on an evaporation mask, and the first sub-pixel evaporation openings on the evaporation mask are arranged in a staggered manner; and/or the second sub-pixels of the adjacent four pixel units are formed by adopting the same second sub-pixel evaporation openings on the evaporation mask plate, and the second sub-pixel evaporation openings on the evaporation mask plate are distributed in a staggered mode.
Optionally, the first sub-pixel is a green sub-pixel, the second sub-pixel is a red sub-pixel, and the third sub-pixel is a blue sub-pixel.
According to another aspect of the present invention, there is provided an OLED display panel including the pixel structure as described in any one of the above.
Compared with the prior art, the invention has the following beneficial effects:
first, among the three color sub-pixels of each pixel unit, at least one color sub-pixel is shared by two adjacent pixel units, that is, two adjacent sub-pixels of the same color arranged in the V-delta pixel are merged into one sub-pixel to be shared by two adjacent pixel units. Therefore, the number of pixel circuits is reduced, and the size of the evaporation opening on the evaporation mask can be increased under the condition of the same size of the connecting bridge, so that the area of the luminous area of the sub-pixel is increased, or the size of the connecting bridge on the evaporation mask is increased, and the difficulty of the mask manufacturing process and the evaporation process is reduced. Furthermore, after the adjacent third sub-pixels are combined, the distance between the adjacent third sub-pixels can be increased, the FMM can be manufactured in a Slot mode, the difficulty of the manufacturing process of the evaporation mask is reduced, the strength of the evaporation mask can be increased, and the evaporation mask is not prone to deformation in the using process.
In addition, two adjacent pixel units on the same row are taken as a pixel group, two pixel units in the same pixel group are in mirror symmetry, two adjacent pixel units on the same column are also in mirror symmetry, and because the two pixel units in the same pixel group are in mirror symmetry, the two adjacent pixel units on the same column are also in mirror symmetry. So, make the same colour sub-pixel next-door neighbour of four pixel in adjacent two rows and adjacent two rows arrange, the first sub-pixel of adjacent four pixel can adopt same first sub-pixel coating by vaporization opening formation on the coating by vaporization mask, and in the same way, the second sub-pixel of adjacent four pixel can adopt same second sub-pixel coating by vaporization opening formation on the coating by vaporization mask, the third sub-pixel of adjacent four pixel also can adopt same third sub-pixel coating by vaporization opening formation on the coating by vaporization mask, can further increase the area in sub-pixel's luminous zone or reduce the degree of difficulty of coating by vaporization preparation method and coating by vaporization technology. And moreover, the first sub-pixels and the second sub-pixels in the adjacent pixel groups on the same line are arranged in a staggered mode, so that the difficulty of the manufacturing process and the evaporation process of the evaporation mask is reduced, the strength of the evaporation mask is increased, and the evaporation mask is not prone to deformation in the using process.
Drawings
Fig. 1A is a schematic diagram of a pixel arrangement of an OLED display panel in the prior art.
FIG. 1B is a schematic diagram of an FMM corresponding to FIG. 1A.
Fig. 2A is a schematic diagram of a pixel arrangement of another OLED display panel in the prior art.
FIG. 2B is a diagram of an FMM corresponding to the R or G sub-pixel of FIG. 2A.
FIG. 2C is a diagram of an FMM corresponding to the B sub-pixel of FIG. 2A.
Fig. 3 is a schematic diagram of a pixel arrangement of another OLED display panel in the prior art.
Fig. 4A is a schematic view of a first pixel arrangement according to a first embodiment of the invention.
Fig. 4B is a schematic diagram of a second pixel arrangement according to the first embodiment of the invention.
Fig. 5A is a schematic view of a first pixel arrangement according to a second embodiment of the invention.
Fig. 5B is a schematic view of a second pixel arrangement according to a second embodiment of the invention.
Fig. 6A is a schematic view of a first pixel arrangement according to a third embodiment of the invention.
FIG. 6B is a schematic diagram of a second pixel arrangement according to a third embodiment of the present invention
Fig. 7A is a schematic view of a first pixel arrangement according to a fourth embodiment of the invention.
Fig. 7B is a schematic view of a second pixel arrangement according to a fourth embodiment of the invention.
Fig. 7C is a schematic view of a third pixel arrangement according to a fourth embodiment of the invention.
Fig. 8A is a schematic view of a first pixel arrangement according to a fifth embodiment of the present invention.
Fig. 8B is a schematic view of a second pixel arrangement according to a fifth embodiment of the invention.
Fig. 8C is a schematic view of a third pixel arrangement according to a fifth embodiment of the present invention.
Fig. 9A is a schematic view of a first pixel arrangement according to a sixth embodiment of the invention.
Fig. 9B is a schematic view of a second pixel arrangement according to a sixth embodiment of the invention.
FIG. 9C is a diagram of an FMM corresponding to the first sub-pixel or the second sub-pixel of FIG. 9A.
Fig. 10A is a schematic view of a seventh pixel arrangement according to the embodiment of the invention.
Fig. 10B is a schematic diagram of a second pixel arrangement according to a seventh embodiment of the invention.
Fig. 10C is a schematic view of a third pixel arrangement according to a seventh embodiment of the invention.
Fig. 11A is a schematic view of a first pixel arrangement according to an eighth embodiment of the invention.
Fig. 11B is a schematic diagram of a second pixel arrangement according to an eighth embodiment of the invention.
Fig. 12A is a schematic view of a ninth pixel arrangement according to the embodiment of the invention.
Fig. 12B is a schematic view of a second pixel arrangement according to the ninth embodiment of the invention.
Fig. 13A is a schematic view of a first pixel arrangement according to a tenth embodiment of the invention.
Fig. 13B is a schematic diagram of a second pixel arrangement according to a tenth embodiment of the invention.
Detailed Description
The core idea of the present invention is to provide a pixel structure of an OLED display panel, wherein at least one color of sub-pixels in the three colors of sub-pixels of each pixel unit is shared by two adjacent pixel units, that is, two adjacent sub-pixels with the same color in a V-delta pixel arrangement structure are combined into one sub-pixel for sharing by two adjacent pixel units, so as to reduce the pixel circuit, and the size of an evaporation opening on an evaporation mask can be increased under the condition of the same size of a connection bridge, so as to increase the area of a light emitting area of the sub-pixel, or increase the size of the connection bridge on the evaporation mask, thereby reducing the difficulty of the mask manufacturing process and the evaporation process. Furthermore, after the adjacent third sub-pixels are combined, the distance between the adjacent third sub-pixels can be increased, the FMM can be manufactured in a slot mode, the difficulty of the manufacturing process of the evaporation mask is reduced, the strength of the evaporation mask can be increased, the evaporation mask is not prone to deformation in the using process, the service life of the FMM is prolonged, and the cost is reduced.
In addition, two adjacent pixel units on the same row are used as a pixel group, the two pixel units in the same pixel group are in mirror symmetry, the two adjacent pixel units on the same column are also in mirror symmetry, and because the two pixel units in the same pixel group are in mirror symmetry, the two adjacent pixel units on the same column are also in mirror symmetry. So, make the same colour sub-pixel next-door neighbour of four pixel in adjacent two rows and adjacent two rows arrange, the first sub-pixel of four adjacent pixel adopts same first sub-pixel coating by vaporization opening formation on the coating by vaporization mask, and in a similar way, the second sub-pixel of four adjacent pixel adopts same second sub-pixel coating by vaporization opening formation on the coating by vaporization mask, the third sub-pixel of four adjacent pixel adopts same third sub-pixel coating by vaporization opening formation on the coating by vaporization mask, can further increase the area in sub-pixel's luminous zone or reduce the degree of difficulty of mask preparation technology and coating by vaporization technology. And moreover, the first sub-pixels and the second sub-pixels in the adjacent pixel groups on the same line are arranged in a staggered mode, so that the difficulty of the manufacturing process and the evaporation process of the evaporation mask is reduced, and the strength of the evaporation mask is increased.
The pixel structure and the OLED display panel according to the present invention will be described in detail with reference to the accompanying drawings and specific embodiments. Advantages and features of the present invention will become apparent from the following description and from the claims. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention.
Example one
The embodiment provides a pixel structure of an OLED display panel, which includes a plurality of pixel units arranged in an array, each pixel unit includes a first sub-pixel 401, a second sub-pixel 402 and a third sub-pixel 403 with different colors, the first sub-pixel 401 and the second sub-pixel 402 are arranged in one column, and the third sub-pixel 403 is arranged in another column.
Each sub-pixel comprises a luminous area (display area) and a non-luminous area (non-display area), the luminous area of each sub-pixel comprises a cathode, an anode and an electroluminescent layer (organic emission layer), and the electroluminescent layer is located between the cathode and the anode and is used for generating light of a preset color to achieve display. It is usually necessary to use three times of evaporation processes to form electroluminescent layers of corresponding colors (such as red, green or blue) in the light-emitting regions of the pixel regions of corresponding colors, respectively. In this embodiment, the first sub-pixel 401 is a green (G) sub-pixel, the second sub-pixel 402 is a red (R) sub-pixel, and the third sub-pixel 403 is a blue (B) sub-pixel; accordingly, the first sub-pixel 401 includes a G light emitting region and a G non-light emitting region, and includes an organic emission layer for emitting green light; the second sub-pixel 402 includes an R-emitting region and an R-non-emitting region, and includes an organic emission layer for emitting red light; the third sub-pixel 403 includes a B light emitting region and a B non-light emitting region, and includes an organic emission layer for emitting blue light.
In this embodiment, the sub-pixels with the same color in two adjacent pixel units on the same row are combined, and the combined sub-pixel is shared by the two adjacent pixel units.
Fig. 4A is a schematic view of a first pixel arrangement in this embodiment. As shown in fig. 4A, the third sub-pixel 403 (i.e., the B sub-pixel) is shared by two adjacent pixel units 400a and 400B on the same row. Specifically, the first sub-pixel 401, the second sub-pixel 402 and the third sub-pixel 403 are all square, that is, the size of the B sub-pixels in the column direction is reduced after the B sub-pixels are combined, and the B sub-pixels are adjusted to be square by a rectangle in the prior art, so that the slot mode can be adopted by the evaporation mask plate, the difficulty of the manufacturing process of the evaporation mask plate can be reduced, and the strength of the evaporation mask plate is increased. Moreover, the B sub-pixel has relatively low human eye sensitivity, and has little influence on the visual effect after the size is reduced.
Fig. 4B is a schematic diagram of a second pixel arrangement in this embodiment. As shown in fig. 4B, the second sub-pixel 402 (i.e., the R sub-pixel) is common to two adjacent pixel units 400a and 400B on the same row. Of course, the first sub-pixel 401 (i.e., the G sub-pixel) may be shared by two adjacent pixel units 400a and 400b on the same row.
Example two
This embodiment is different from the first embodiment in that sub-pixels of one color are merged and shared in the column direction.
Fig. 5A is a schematic view of a first pixel arrangement in this embodiment. As shown in fig. 5A, the second sub-pixel 402 (i.e., the R sub-pixel) is shared by two adjacent pixel units 400a and 400b on the same column. The first sub-pixel 401 is square, and the second sub-pixel 402 and the third sub-pixel 403 are all rectangular.
Fig. 5B is a schematic diagram of a second pixel arrangement in this embodiment. As shown in fig. 5B, the third sub-pixel 403 (i.e., the B sub-pixel) is shared by two adjacent pixel units 400a and 400B on the same column. The first sub-pixel 401 and the second sub-pixel 402 are square, and the third sub-pixel 403 is rectangular. Further, the third sub-pixel 403 is arranged in a straight line with the second sub-pixels 402 of two adjacent rows.
EXAMPLE III
The present embodiment is different from the first embodiment in that the sub-pixels of two colors are merged and shared in the row direction.
Fig. 6A is a schematic view of a first pixel arrangement in this embodiment. As shown in fig. 6A, the first sub-pixel 401 (i.e., G sub-pixel) and the second sub-pixel 402 (i.e., R sub-pixel) are both common to two adjacent pixel units 400a and 400b on the same row. The first sub-pixel 401, the second sub-pixel 402 and the third sub-pixel 403 are all rectangular. The short sides of the first sub-pixel 401 and the second sub-pixel 402 are parallel to the long side of the third sub-pixel 403.
Fig. 6B is a schematic diagram of a second pixel arrangement in this embodiment. As shown in fig. 6B, the second sub-pixel 402 (i.e., the R sub-pixel) and the third sub-pixel 403 (i.e., the B sub-pixel) are both common to two adjacent pixel units on the same row. Specifically, the second sub-pixel 402 (i.e., the R sub-pixel) is shared by two adjacent pixel units 400a and 400B in the same row, and the third sub-pixel 403 (i.e., the B sub-pixel) is shared by two adjacent pixel units 400B and 400c in the same row. The first sub-pixel 401 and the third sub-pixel 403 are square, and the second sub-pixel 402 is rectangular.
Example four
This embodiment is different from the first embodiment in that two color sub-pixels are combined and shared in the column direction.
Fig. 7A is a schematic view of a first pixel arrangement in this embodiment. As shown in fig. 7A, the second sub-pixel 402 (i.e., R sub-pixel) is shared by two adjacent pixel units 400a and 400b on the same column, and the first sub-pixel 401 (i.e., G sub-pixel) is shared by two adjacent pixel units 400b and 400c on the same column, i.e., the R sub-pixel in the pixel unit 400b is shared by the pixel unit 400a and the G sub-pixel is shared by the pixel unit 400 c. The first sub-pixel 401, the second sub-pixel 402 and the third sub-pixel 403 are all rectangular, and the long sides of the first sub-pixel 401, the second sub-pixel 402 and the third sub-pixel 403 are parallel to each other. Optionally, the areas of the first sub-pixel 401, the second sub-pixel 402 and the third sub-pixel 403 are the same.
Fig. 7B is a schematic diagram of a second pixel arrangement in this embodiment. As shown in fig. 7B, the second sub-pixel 402 (i.e., R sub-pixel) and the third sub-pixel 403 (i.e., B sub-pixel) are both shared by two adjacent pixel units 400a and 400B on the same column. The first sub-pixel 401 is square, and the second sub-pixel 402 and the third sub-pixel 403 are both rectangular. And, the third sub-pixel 403 and the second sub-pixel 402 are arranged in a straight line. Optionally, the long side of the second sub-pixel 402 and the long side of the third sub-pixel 403 are parallel to each other.
Fig. 7C is a third pixel arrangement diagram of the present embodiment. As shown in fig. 7C, the second sub-pixel 402 (i.e., the R sub-pixel) is shared by two adjacent pixel units 400a and 400B on the same column, and the third sub-pixel 403 (i.e., the B sub-pixel) is shared by two adjacent pixel units 400B and 400C on the same column. The first sub-pixel 401 is square, and the second sub-pixel 402 and the third sub-pixel 403 are both rectangular. And, the third sub-pixel 403 is arranged in a straight line with the first sub-pixels 401 of two adjacent rows.
EXAMPLE five
The present embodiment is different from the first embodiment in that the sub-pixels of one color are merged and shared in the row direction, and the sub-pixels of the other color are merged and shared in the column direction.
Fig. 8A is a schematic view of a first pixel arrangement in this embodiment. As shown in fig. 8A, the third sub-pixel 403 (i.e., the B sub-pixel) is shared by two adjacent pixel units 400a and 400B on the same row, and the second sub-pixel 402 (i.e., the R sub-pixel) is shared by two adjacent pixel units 400a and 400c on the same column. The first sub-pixel 401 and the third sub-pixel 403 are both square, and the second sub-pixel 402 is rectangular.
Fig. 8B is a schematic diagram of a second pixel arrangement in this embodiment. As shown in fig. 8B, the second sub-pixel 402 (i.e., the R sub-pixel) is shared by two adjacent pixel units 400a and 400B on the same row, and the third sub-pixel 403 (i.e., the B sub-pixel) is shared by two adjacent pixel units 400a and 400c on the same column. The first sub-pixel 401 is square, and the second sub-pixel 402 and the third sub-pixel 403 are both rectangular. And, the third sub-pixel 403 is arranged in a straight line with the second sub-pixels 402 of two adjacent rows.
Fig. 8C is a third pixel arrangement diagram of the present embodiment. As shown in fig. 8C, the second sub-pixel 402 (i.e., the R sub-pixel) is shared by two adjacent pixel units 400a and 400B on the same row, and the third sub-pixel 403 (i.e., the B sub-pixel) is shared by two adjacent pixel units 400a and 400C on the same column. The first sub-pixel 401 is square, and the second sub-pixel 402 and the third sub-pixel 403 are both rectangular. And, the third sub-pixel 403 is arranged in a straight line with the first sub-pixels 401 of two adjacent rows.
EXAMPLE six
The embodiment provides a pixel structure of an OLED display panel, which includes a plurality of pixel units arranged in an array, each pixel unit includes a first sub-pixel 401, a second sub-pixel 402 and a third sub-pixel 403 with different colors, the first sub-pixel 401 and the second sub-pixel 402 are arranged in one column, and the third sub-pixel 403 is arranged in another column. Two adjacent pixel units 400a and 400b in the same row are used as a pixel group, the two pixel units 400a and 400b in the same pixel group are in mirror symmetry, the pixel units in two adjacent rows in the same column are in mirror symmetry, and the first sub-pixels and the second sub-pixels in the two adjacent pixel groups in the same row are arranged in a staggered manner.
Specifically, as shown in fig. 9A, the pixel units 400a and 400b in two adjacent rows on the same row are taken as a pixel group 1, and the two pixel units 400a and 400b in the pixel group 1 are mirror-symmetric; the pixel units 400c and 400d of two adjacent rows on the same row are used as a pixel group 2, and the two pixel units 400c and 400d in the pixel group 2 are in mirror symmetry; pixel units such as 400a and 400e in two adjacent rows on the same column are mirror-symmetric, and pixel units such as 400b and 400f in two adjacent rows on the other column are mirror-symmetric; also, the first sub-pixel 401 and the second sub-pixel 402 in the adjacent pixel groups 1 and 2 on the same row are arranged alternately. Because two pixel units in the same pixel group are arranged in a mirror symmetry manner, and pixel units in two adjacent rows on the same column are also in a mirror symmetry manner, the same color sub-pixels of four pixel groups in two adjacent rows and two adjacent columns are arranged in a close proximity manner, for example, first sub-pixels 401 in the pixel units 400c, 400d, 400g and 400h are arranged in a close proximity manner, and second sub-pixels 402 in the pixel units 400a, 400b, 400e and 400f are also arranged in a close proximity manner, so that the first sub-pixels 401 of the four adjacent pixel units can be formed by using the same first sub-pixel evaporation opening on an evaporation mask, and/or the second sub-pixels 402 of the four adjacent pixel units can be formed by using the same second sub-pixel evaporation opening on the evaporation mask.
FIG. 9C is a diagram of an FMM corresponding to the first sub-pixel or the second sub-pixel of FIG. 9A. As shown in fig. 9C, the FMM corresponding to the first sub-pixel 401 or the second sub-pixel 402 includes a shielding region 407 and an evaporation opening 408. Since the first sub-pixel 401 and the second sub-pixel 402 have the same shape and area and the same arrangement, the same FMM may be used to perform evaporation twice, or two FMMs may be used to perform evaporation respectively.
In this embodiment, the sub-pixels with the same color in the adjacent four pixel units may be formed by using the same evaporation opening on the evaporation mask, and the light emitting areas of the two sub-pixels are defined by the anode and the cathode. For example, the first sub-pixels 401 of the adjacent four pixel units are formed by using the same first sub-pixel evaporation opening on the evaporation mask, the second sub-pixels 402 of the adjacent four pixel units are formed by using the same second sub-pixel evaporation opening on the evaporation mask, and the third sub-pixels 403 of the adjacent four pixel units are formed by using the same third sub-pixel evaporation opening on the evaporation mask. As shown in fig. 9A, the first sub-pixels 401 in the pixel units 400c, 400d, 400g, and 400h are formed by evaporation through the same first sub-pixel evaporation opening, and are not limited to the size of Bridge, so that the pitch of two sub-pixels formed by evaporation through the same evaporation opening can be designed to be smaller, the opening area of the FFM can be increased, and the aperture ratio can be improved; of course, the size of the Bridge can be increased under the condition of a certain aperture opening ratio, so that the strength of the evaporation mask plate is enhanced.
With continued reference to fig. 9A, since the first sub-pixels 401 and the second sub-pixels 402 in the adjacent pixel groups on the same row are arranged in a staggered manner, in this case, the evaporation openings of the first sub-pixels on the evaporation mask are arranged in a staggered manner. That is, the first sub-pixels 401 in the two pixel units in the pixel group 1 and the second sub-pixels 402 in the two pixel units in the pixel group 2 are arranged on a straight line, in other words, the same color sub-pixels in the two adjacent pixel groups 1 and 2 in the same row are not arranged on a straight line, but are diagonally distributed. For example, the first sub-pixel 401 in the pixel units 400a and 400b is above and the second sub-pixel 402 is below, and the first sub-pixel 401 in the pixel units 400C and 400d is below and the second sub-pixel 402 is above, so that the first sub-pixel evaporation openings on the evaporation mask are staggered with each other (as shown in fig. 9C), and similarly, the second sub-pixel evaporation openings on the evaporation mask are also staggered with each other, and the distance between the rows is increased; like this, utilize first sub-pixel evaporation coating by vaporization opening on the evaporation coating mask version to stagger each other, and/or, second sub-pixel evaporation coating by vaporization opening on the evaporation coating mask version staggers each other, and the available Slot mode preparation of FMM is favorable to reducing the preparation technology degree of difficulty of evaporation coating by vaporization mask plate, increases the intensity of evaporation coating by vaporization mask version, improves the product yield, increases evaporation coating by vaporization mask plate life-span, reduce cost.
Also, the present embodiment makes subpixels of one color be merged and shared in the row direction. As shown in fig. 9A, the third sub-pixel 403 (i.e., the B sub-pixel) is shared by two adjacent pixel units 400B and 400c in two adjacent pixel groups on the same row, that is, in this case, two pixel units in the same pixel group share one sub-pixel, but two pixel units in different pixel groups share one sub-pixel, for example, the pixel unit 400B in the pixel group 1 shares the B sub-pixel with the pixel unit 400c in the pixel group 2.
Fig. 9B is a schematic diagram of a second pixel arrangement in this embodiment. As shown in fig. 9B, the second sub-pixel 402 (i.e., R sub-pixel) is shared by two adjacent pixel units 400a and 400B on the same row, and similarly, the second sub-pixel 402 (i.e., R sub-pixel) is shared by two adjacent pixel units 400c and 400d on the same row. In this case, two pixel units in the same pixel group share one sub-pixel, for example, two pixel units 400a and 400b in the pixel group 1 share an R sub-pixel, and two pixel units 400c and 400d in the pixel group 2 also share an R sub-pixel, rather than sharing one sub-pixel between different pixel groups.
EXAMPLE seven
In this embodiment, on the basis of the sixth embodiment, the sub-pixels of one color are combined and shared in the column direction.
Fig. 10A is a schematic view of a first pixel arrangement in this embodiment. As shown in fig. 10A, two adjacent columns of pixel units 400A and 400b in the same row are used as a pixel group, two pixel units 400A and 400b in the same pixel group are mirror-symmetric, two adjacent rows of pixel units on the same column are mirror-symmetric, and the first sub-pixel 401 and the second sub-pixel 402 in the adjacent pixel group on the same row are arranged in a staggered manner. Meanwhile, the second sub-pixel 402 (i.e., the R sub-pixel) is common to two adjacent pixel units 400a and 400c on the same column. The first sub-pixel 401 is square, and the second sub-pixel 402 and the third sub-pixel 403 are both rectangular.
Fig. 10B is a schematic diagram of a second pixel arrangement in this embodiment. As shown in fig. 10B, the third sub-pixel 403 (i.e., the B sub-pixel) is shared by two adjacent pixel units 400a and 400B on the same column. The first sub-pixel 401 and the second sub-pixel 402 are square, and the third sub-pixel 403 is rectangular.
As shown in fig. 10C, in this case, the third sub-pixel 403 (i.e., the B sub-pixel) is still shared by two adjacent pixel units 400a and 400B on the same column. However, unlike fig. 10B, the third subpixels 403 in the same row are not arranged linearly, but are shifted from each other in the column direction by a certain distance.
Example eight
In this embodiment, on the basis of the sixth embodiment, two color sub-pixels are shared in the row direction.
Fig. 11A is a schematic view of a first pixel arrangement in this embodiment. As shown in fig. 11A, the pixel units 400a and 400b in two adjacent rows on the same row are used as a pixel group, the two pixel units 400a and 400b in the same pixel group are mirror-symmetric, the pixel units in two adjacent rows on the same column are mirror-symmetric, and the first sub-pixel 401 and the second sub-pixel 402 in the pixel group on the same row are arranged in a staggered manner. Meanwhile, the first sub-pixel 401 (i.e., G sub-pixel) and the second sub-pixel 402 (i.e., R sub-pixel) are both common to two adjacent pixel units 400a, 400b on the same row.
As shown in fig. 11B, the second sub-pixel 402 (i.e., the R sub-pixel) and the third sub-pixel 403 (i.e., the B sub-pixel) are both common to two adjacent pixel units on the same row. Specifically, the second sub-pixel 402 (i.e., the R sub-pixel) is shared by two adjacent pixel units 400a and 400B in the same row, and the third sub-pixel 403 (i.e., the B sub-pixel) is shared by two adjacent pixel units 400B and 400c in the same row. The first sub-pixel 401 and the third sub-pixel 403 are square, and the second sub-pixel 402 is rectangular.
Example nine
In this embodiment, two color sub-pixels are shared in the column direction on the basis of the sixth embodiment.
Fig. 12A is a schematic view of a first pixel arrangement in this embodiment. As shown in fig. 10A, the second sub-pixel 402 (i.e., the R sub-pixel) is shared by two adjacent pixel units 400A and 400b on the same column, and the first sub-pixel 401 (i.e., the G sub-pixel) is shared by two adjacent pixel units 400b and 400c on the same column. The first sub-pixel 401, the second sub-pixel 402 and the third sub-pixel 403 are all rectangular.
Fig. 12B is a second pixel arrangement diagram of the present embodiment. As shown in fig. 12B, the second sub-pixel 402 (i.e., R sub-pixel) and the third sub-pixel 403 (i.e., B sub-pixel) are both shared by two adjacent pixel units 400a and 400B on the same column. The first sub-pixel 401 is square, and the second sub-pixel 402 and the third sub-pixel 403 are both rectangular. And, the third sub-pixel 403 and the second sub-pixel 402 are arranged in a straight line.
Example ten
In this embodiment, on the basis of the sixth embodiment, the sub-pixels of one color are merged and shared in the row direction, and the sub-pixels of the other color are merged and shared in the column direction.
Fig. 13A is a schematic view of a first pixel arrangement of the embodiment. As shown in fig. 10A, the third sub-pixel 403 (i.e., the B sub-pixel) is shared by two adjacent pixel units 400B and 400c on the same row, and the second sub-pixel 402 (i.e., the R sub-pixel) is shared by two adjacent pixel units 400A and 400B on the same column. The first sub-pixel 401 and the third sub-pixel 403 are both square, and the second sub-pixel 402 is rectangular.
Fig. 13B is a second pixel arrangement diagram of the present embodiment. As shown in fig. 13B, the second sub-pixel 402 (i.e., the R sub-pixel) is shared by two adjacent pixel units 400a and 400B on the same row, and the third sub-pixel 403 (i.e., the B sub-pixel) is shared by two adjacent pixel units 400a and 400c on the same column. The first sub-pixel 401 is square, and the second sub-pixel 402 and the third sub-pixel 403 are both rectangular. And, the third sub-pixel 403 is arranged in a straight line with the second sub-pixels 402 of two adjacent rows.
The pixel structure and the OLED display panel of the present invention are described in detail with reference to several embodiments, but it should be understood that the above description is only for the description of the preferred embodiments of the present invention, and not for any limitation to the scope of the present invention, and those skilled in the art of the present invention can make any changes and modifications according to the above disclosure, and all fall within the protection scope of the claims. For example, the first sub-pixel 401, the second sub-pixel 402, and the third sub-pixel 403 may be in a quadrilateral shape (such as a rectangle or a square in the above embodiment), or may be in a pentagonal shape, a hexagonal shape, an octagonal shape, or the like. In addition, in the above embodiment, the first sub-pixel 401 is a green sub-pixel, and the second sub-pixel 402 is a red sub-pixel, but in other embodiments, the first sub-pixel 401 is a red sub-pixel, and the second sub-pixel 402 is a green sub-pixel, that is, the relative positions of the sub-pixels are not necessarily RGB, but GBR, BRG, BGR, and the like may be used.
In the present specification, the "column direction" may refer to either a longitudinal direction or a transverse direction, and when the column direction refers to a longitudinal direction (Y direction), the row direction refers to a transverse direction (X direction), and when the column direction refers to a transverse direction (X direction), the row direction refers to a column direction (Y direction); however, if the OLED display panel is rotated by 90 degrees, it can be understood that the column direction and the row direction are interchanged.
In addition, in the present specification, the embodiments are described in a progressive manner, each embodiment focuses on the differences from the other embodiments, and the same and similar parts among the embodiments may be referred to each other.
Claims (11)
1. A pixel structure comprises a plurality of pixel units arranged in an array, wherein each pixel unit comprises a first sub-pixel, a second sub-pixel and a third sub-pixel which are different in color; the first sub-pixel and the second sub-pixel are arranged in one column, and the third sub-pixel is arranged in the other column; or the first sub-pixel and the second sub-pixel are arranged in one row, and the third sub-pixel is arranged in the other row; wherein at least one color sub-pixel is shared by two adjacent pixel units;
two adjacent pixel units on the same row are used as a pixel group, two pixel units in the same pixel group are in mirror symmetry, and pixel units in two adjacent rows on the same column are in mirror symmetry; or two adjacent pixel units on the same column are used as a pixel group, two pixel units in the same pixel group are in mirror symmetry, and pixel units on two adjacent columns on the same row are in mirror symmetry.
2. The pixel structure of claim 1 wherein a sub-pixel of one color is shared by two pixel cells adjacent in either the row or column direction; or, the sub-pixels of two colors are shared by two adjacent pixel units in the row direction or the column direction; alternatively, the sub-pixel of one color is shared by two pixel units adjacent in the row direction, and the sub-pixel of the other color is shared by two pixel units adjacent in the column direction.
3. The pixel structure according to claim 1, wherein two adjacent pixel units in the same row are taken as a pixel group, and the first sub-pixel and the second sub-pixel in the adjacent pixel group in the same row are arranged in a staggered manner; or two adjacent pixel units on the same column are used as a pixel group, and the first sub-pixels and the second sub-pixels in the adjacent pixel groups on the same column are arranged in a staggered mode.
4. The pixel structure according to claim 1, wherein the first sub-pixels of the adjacent four pixel units are formed by using the same first sub-pixel evaporation openings on an evaporation mask, and the first sub-pixel evaporation openings on the evaporation mask are arranged in a staggered manner; and/or the second sub-pixels of the adjacent four pixel units are formed by adopting the same second sub-pixel evaporation openings on the evaporation mask plate, and the second sub-pixel evaporation openings on the evaporation mask plate are distributed in a staggered mode.
5. The pixel structure according to any one of claims 1 to 4, wherein the first sub-pixel is a green sub-pixel, the second sub-pixel is a red sub-pixel, and the third sub-pixel is a blue sub-pixel.
6. An OLED display panel comprising the pixel structure of any one of claims 1-5.
7. A pixel structure comprises a plurality of pixel units arranged in an array, wherein each pixel unit comprises a first sub-pixel, a second sub-pixel and a third sub-pixel which are different in color; it is characterized in that the preparation method is characterized in that,
the first sub-pixels and the second sub-pixels are arranged in one column, the third sub-pixels are arranged in the other column, two adjacent pixel units in the same row are used as a pixel group, two pixel units in the same pixel group are in mirror symmetry, two adjacent pixel units in the same column are in mirror symmetry, the first sub-pixels and the second sub-pixels in the adjacent pixel groups in the same row are in staggered arrangement, and at least one color sub-pixel is shared by two adjacent pixel units; or,
the first sub-pixels and the second sub-pixels are arranged in one row, the third sub-pixels are arranged in the other row, two adjacent pixel units on the same column are used as a pixel group, the two pixel units in the same pixel group are in mirror symmetry, the pixel units on two adjacent columns on the same row are in mirror symmetry, the first sub-pixels and the second sub-pixels in the adjacent pixel groups on the same column are arranged in a staggered mode, and the sub-pixels of at least one color are shared by the two adjacent pixel units.
8. The pixel structure of claim 7 wherein a sub-pixel of one color is shared by two pixel cells adjacent in either the row or column direction; or, the sub-pixels of two colors are shared by two adjacent pixel units in the row direction or the column direction; alternatively, the sub-pixel of one color is shared by two pixel units adjacent in the row direction, and the sub-pixel of the other color is shared by two pixel units adjacent in the column direction.
9. The pixel structure according to claim 7, wherein the first sub-pixels of the adjacent four pixel units are formed by using the same first sub-pixel evaporation openings on an evaporation mask, and the first sub-pixel evaporation openings on the evaporation mask are arranged in a staggered manner; and/or the second sub-pixels of the adjacent four pixel units are formed by adopting the same second sub-pixel evaporation openings on the evaporation mask plate, and the second sub-pixel evaporation openings on the evaporation mask plate are distributed in a staggered mode.
10. The pixel structure according to any of claims 7 to 9, wherein the first sub-pixel is a green sub-pixel, the second sub-pixel is a red sub-pixel, and the third sub-pixel is a blue sub-pixel.
11. An OLED display panel comprising the pixel structure of any one of claims 7-10.
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