CN112968038B - Pixel structure, manufacturing method, display panel and driving method - Google Patents
Pixel structure, manufacturing method, display panel and driving method Download PDFInfo
- Publication number
- CN112968038B CN112968038B CN202110116021.XA CN202110116021A CN112968038B CN 112968038 B CN112968038 B CN 112968038B CN 202110116021 A CN202110116021 A CN 202110116021A CN 112968038 B CN112968038 B CN 112968038B
- Authority
- CN
- China
- Prior art keywords
- sub
- pixel
- pixels
- blue
- row direction
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
- H10K59/30—Devices specially adapted for multicolour light emission
- H10K59/35—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels
- H10K59/353—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels characterised by the geometrical arrangement of the RGB subpixels
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
- G09G3/3225—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
-
- 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
-
- 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
- H10K59/1201—Manufacture or treatment
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
- H10K71/10—Deposition of organic active material
- H10K71/12—Deposition of organic active material using liquid deposition, e.g. spin coating
- H10K71/13—Deposition of organic active material using liquid deposition, e.g. spin coating using printing techniques, e.g. ink-jet printing or screen printing
- H10K71/135—Deposition of organic active material using liquid deposition, e.g. spin coating using printing techniques, e.g. ink-jet printing or screen printing using ink-jet printing
Abstract
The embodiment of the application discloses a pixel structure, a manufacturing method, a display panel and a driving method. One embodiment of the pixel structure includes: the pixel structure comprises a substrate, a first pixel group and a second pixel group which are arranged on the substrate in a column direction in an alternating mode, wherein each first pixel group comprises first sub-pixels and second sub-pixels which are arranged in a row direction in an alternating mode, each second pixel group comprises third sub-pixels and first sub-pixels which are arranged in the row direction in an alternating mode, and the length of each second sub-pixel in the row direction and the length of each third sub-pixel in the row direction are respectively larger than the length of each first sub-pixel in the row direction. The design that long and short pixels are arranged alternately can reduce the gap between adjacent pixels, increase the pixel density and improve the aperture opening ratio of the pixels.
Description
Technical Field
The present application relates to the field of display technology. And more particularly, to a pixel structure, a method of fabricating the same, a display panel and a driving method.
Background
For OLED products, the inkjet printing process has a huge cost advantage of saving OLED materials, however, in the actual printing process, the problem of poor spreading of the printed ink droplets is often encountered, which causes the uniformity of light emission of pixels in the sub-pixels to be affected, so the structure of the printed sub-pixels is usually designed to be elliptical, but the elliptical shape sacrifices the pixel aperture ratio to a certain extent; in addition, the blue sub-pixel prepared by the current ink-jet printing process has low luminous efficiency and luminous life, and the problem of color cast caused by insufficient luminous brightness often occurs.
Disclosure of Invention
An object of the present application is to provide a pixel structure, a manufacturing method thereof, a display panel and a driving method thereof, so as to solve at least one of the problems in the prior art.
In order to achieve the purpose, the following technical scheme is adopted in the application:
a first aspect of the present application provides a pixel structure, including:
the pixel structure comprises a first pixel group and a second pixel group which are arranged on a substrate and are alternately arranged in a column direction, wherein each first pixel group comprises a first sub-pixel and a second sub-pixel which are alternately arranged in a row direction, each second pixel group comprises a third sub-pixel and a first sub-pixel which are alternately arranged in the row direction, and the length of each second sub-pixel in the row direction and the length of each third sub-pixel in the row direction are respectively greater than the length of each first sub-pixel in the row direction.
The pixel structure that this application first aspect provided, through the design that long and short pixel alternates to arrange, can reduce the clearance between the adjacent pixel, increase pixel density, improve the aperture opening ratio of pixel to, through improving the pixel structure, be applicable to more adopting the mode preparation organic light emitting device that the inkjet printed.
In one possible implementation manner, the first sub-pixel of the first pixel group is aligned with a center of the third sub-pixel of the corresponding second pixel group in a column direction, and the second sub-pixel of the first pixel group is aligned with a center of the first sub-pixel of the corresponding second pixel group in the column direction.
By the implementation mode, the centers of two adjacent sub-pixels in the row direction are aligned, so that the printing frequency control and the printing algorithm control of the printer in the ink jet process can be facilitated, and the printing speed is improved.
In one possible implementation manner, the length of the second sub-pixel in the row direction and the length of the third sub-pixel in the row direction are respectively twice the length of the first sub-pixel in the row direction.
In one possible implementation, the pitches of the sub-pixels adjacent in the row direction are equal;
the length of the first sub-pixel in the column direction, the length of the second sub-pixel in the column direction, and the length of the third sub-pixel in the column direction are equal.
This implementation can make the printer move more stably when printing by setting the sub-pixels to be equally spaced.
In one possible implementation manner, the first sub-pixel, the second sub-pixel, and the third sub-pixel are a red sub-pixel, a green sub-pixel, and a blue sub-pixel, respectively, and the blue sub-pixel in the second pixel group includes a first blue sub-pixel and a second blue sub-pixel which are alternately arranged.
This implementation, through increasing blue sub-pixel number and length, can increase blue sub-pixel's luminous efficacy and luminous life-span respectively when drive is luminous with two kinds of drive modes of this application, prevent prior art's colour cast problem.
A second aspect of the present application provides a method for fabricating a pixel structure as provided in the first aspect of the present application, the method comprising:
forming a pixel defining layer on a substrate, including first opening groups and second opening groups alternately arranged in a column direction, each of the first opening groups including first sub openings and second sub openings alternately arranged in a row direction, each of the second opening groups including third sub openings and first sub openings alternately arranged in the row direction;
and forming the first sub-pixel, the second sub-pixel and the third sub-pixel in the first sub-opening, the second sub-opening and the third sub-opening respectively by using an ink-jet printing process.
According to the manufacturing method of the pixel structure provided by the second aspect of the application, through the design of alternate arrangement of the long and short pixels, the gap between the adjacent pixels can be reduced, the pixel density is increased, and the aperture opening ratio of the pixels is improved.
In one possible implementation, when forming the second sub-pixel by inkjet printing, a first safety boundary is provided, which is located in the second sub-aperture and is located at a distance from an edge of the second sub-aperture in the row direction, wherein the first safety boundary coincides with a center line between a corresponding first sub-aperture and a third sub-aperture adjacent to the first sub-aperture in a second aperture group adjacent to the first sub-aperture in the column direction;
when forming the third sub-pixel by ink-jet printing, a second security boundary is provided in which ink in the third sub-aperture is ejected in the row direction from an edge of the third sub-aperture, wherein the second security boundary coincides in the column direction with a center line between a corresponding first sub-aperture in a first aperture group adjacent in the column direction and a second sub-aperture adjacent to the first sub-aperture.
According to the implementation mode, when the printing is carried out, because the intervals of the two sides of the opening in the pixel are equal, the atmosphere consistency is higher, the frequency and the algorithm of the printer can be conveniently controlled, the mass production of ink-jet printing products is favorably realized, and the requirement of high-pixel-density products is met.
A third aspect of the present application provides a display panel including:
the pixel structure provided by the first aspect of the present application, wherein the first sub-pixel, the second sub-pixel and the third sub-pixel are a red sub-pixel, a green sub-pixel and a blue sub-pixel, respectively, wherein the blue sub-pixel in the second pixel group includes a first blue sub-pixel and a second blue sub-pixel which are alternately arranged, and each sub-pixel includes a switching element and a light emitting element;
a drive circuit, comprising:
a first scanning line connected with the control end of the switching element of the red sub-pixel;
a second scanning line connected with the control end of the switching element of the green sub-pixel;
a third scanning line connected to a control terminal of the switching element of the first blue sub-pixel;
a fourth scan line connected to a control terminal of the switching element of the second blue subpixel;
first data lines respectively connected to first ends of the switching elements of the red and first blue sub-pixels, wherein second ends of the switching elements of the red and first blue sub-pixels are connected to anodes of the light emitting elements in the corresponding sub-pixels;
and a second data line respectively connected to first ends of the switching elements of the green and second blue sub-pixels, wherein second ends of the switching elements of the green and second blue sub-pixels are connected to anodes of the light emitting elements in the corresponding sub-pixels.
According to the display panel provided by the third aspect of the application, on one hand, the number and the length of the blue sub-pixels are increased, so that the luminous efficiency and the luminous service life of the blue sub-pixels can be respectively increased when the display panel is driven to emit light in two driving modes, the color cast problem in the prior art is prevented, and on the second aspect, the blue sub-pixels are connected to different data lines for light emission control, so that the blue sub-pixels can alternately emit light, and the service life of the blue sub-pixels is prolonged.
A fourth aspect of the present application provides a method of driving a display panel provided by the third aspect of the present application, the method comprising:
a first drive mode and a second drive mode, wherein,
in the first mode of the drive, the drive voltage is set to,
the first scanning line to the fourth scanning line receive enabling signals, and the switch elements of the sub-pixels receiving the enabling signals are conducted;
the first data line receives a data signal to make the light emitting elements in the red sub-pixel and the first blue sub-pixel emit light;
the second data line receives the data signal, so that the light emitting elements in the green sub-pixel and the second blue sub-pixel emit light,
in the second mode of driving, the first driving mode,
enabling signals are received by the first scanning line to the second scanning line, enabling signals are alternately received by the third scanning line and the fourth scanning line in time, and the switching elements of the sub-pixels receiving the enabling signals are conducted;
when the third scanning line receives an enabling signal, the first data line receives a data signal, so that the light-emitting elements in the red sub-pixel and the first blue sub-pixel emit light;
when the fourth scanning line receives the enabling signal, the second data line receives the data signal, so that the light-emitting elements in the green sub-pixel and the second blue sub-pixel emit light.
In the display panel driving method provided by the fourth aspect of the present application, in the first driving mode, the first to fourth scan lines receive the enable signal and the first data line and the second data line receive the data signal, so that all the blue sub-pixels in the same row emit light, and the light emitting efficiency of the display panel is improved. In the second driving mode, the blue sub-pixels in the pixel structure emit light alternately, so that the service life of the blue sub-pixels can be prolonged.
A fifth aspect of the present application provides a display device comprising the display panel provided by the third aspect of the present application.
The beneficial effects of this application are as follows:
the technical scheme that this application provided through the design that long and short pixel alternates to be arranged, can reduce the clearance between the adjacent pixel, increases pixel density, improves the aperture opening ratio of pixel to, through improving the pixel structure, be applicable to the mode preparation organic light emitting device that adopts the inkjet to print more. Simultaneously, through increasing blue sub-pixel number and length, luminous efficiency and the luminous life-span of multiplicable blue sub-pixel when giving out light with two kinds of drive mode drives of this application prevent prior art's colour cast problem.
Drawings
The following describes embodiments of the present application in further detail with reference to the accompanying drawings.
Fig. 1 shows a schematic diagram of a pixel structure according to an embodiment of the present application.
Fig. 2 (a) shows a schematic diagram of a pixel unit in a pixel structure according to an embodiment of the present application.
Fig. 2 (b) shows a schematic diagram of a pixel unit according to an embodiment of the present application.
Fig. 3 is a flowchart illustrating a method for fabricating a pixel structure according to an embodiment of the present disclosure.
Fig. 4 is a schematic diagram illustrating a security boundary of a sub-pixel in a pixel structure according to an embodiment of the present application.
Fig. 5 is a circuit connection diagram of a first scan line and a corresponding sub-pixel according to an embodiment of the present application.
Fig. 6 is a circuit connection diagram of a second scan line and a corresponding sub-pixel according to an embodiment of the present application.
Fig. 7 is a circuit connection diagram of a third scan line and a corresponding sub-pixel according to an embodiment of the present application.
Fig. 8 is a circuit connection diagram of a fourth scan line and a corresponding sub-pixel according to an embodiment of the present application.
Fig. 9 is a circuit connection diagram of a first data line and a corresponding sub-pixel according to an embodiment of the present application.
Fig. 10 is a circuit connection diagram of a second data line and a corresponding sub-pixel according to an embodiment of the present application.
Detailed Description
In order to more clearly explain the present application, the present application is further described below with reference to the embodiments and the accompanying drawings. Similar parts in the figures are denoted by the same reference numerals. It is to be understood by persons skilled in the art that the following detailed description is illustrative and not restrictive, and is not intended to limit the scope of the present application.
Compared with a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED) has the advantages of self-luminescence, fast response, wide viewing angle, high brightness, bright color, lightness, thinness, and the like, and is considered as a next generation Display technology.
The film forming method of OLED mainly includes evaporation process or solution process. The evaporation process is well-established in small-size applications, and the technology is currently applied to mass production, but the technology is expensive in material and low in material utilization rate, and the cost of product development is increased. The film forming method of the solution process OLED mainly includes inkjet printing, nozzle coating, spin coating, screen printing, and the like, wherein the inkjet printing technology is considered as an important method for realizing mass production of large-sized OLEDs due to its high material utilization rate and the realization of large-size.
However, in the actual printing process, the problem of poor spreading of printing ink drops is often encountered, which causes the uniformity of light emission of pixels in pixel units to be affected, therefore, the structure of the printed sub-pixels is usually designed to be elliptical, but the elliptical structure of the sub-pixels sacrifices the aperture ratio of the sub-pixels to some extent; in addition, the current blue sub-pixel obtained by the ink-jet printing process has low luminous efficiency and short luminous life, and the problem of color cast caused by insufficient luminous brightness often occurs.
Therefore, in order to better match with inkjet printing and improve the aperture ratio, one embodiment of the present application provides a pixel structure, as shown in fig. 1, including first pixel groups and second pixel groups arranged on a substrate alternately in a column direction (Y direction in fig. 1), each of the first pixel groups including first sub-pixels and second sub-pixels arranged alternately in a row direction (X direction in fig. 1), each of the second pixel groups including third sub-pixels and first sub-pixels arranged alternately in the row direction, and lengths of the second sub-pixels in the row direction and the third sub-pixels in the row direction being respectively greater than lengths of the first sub-pixels in the row direction.
In one specific example, the first sub-pixel is an R pixel, the second sub-pixel is a G pixel, and the third sub-pixel is a B pixel.
The aperture opening ratio can be effectively improved through the staggered arrangement of the pixels.
In addition, in a specific example, the sub-pixels are all arranged in a rectangular shape, and the sub-pixels with the rectangular design are beneficial to spreading of printing ink drops in an ink jet printing process, so that the light emitting uniformity of each sub-pixel is improved.
In a specific example, an arrangement manner of each sub-pixel in a pixel structure is described:
referring to fig. 1, the first pixel group is a set of all pixel groups in any odd-numbered row along the X direction in fig. 1; the second pixel group is a set of all pixel groups in any even row along the X direction in fig. 1, and the first pixel group and the second pixel group are alternately arranged along the Y direction.
Taking the first sub-pixel as an R pixel, the second sub-pixel as a G pixel, and the third sub-pixel as a B pixel as an example, the sub-pixels are arranged along the X direction as follows:
first row: RGRGRGRG (RGRGRG) \8230;
a second row: BRBRBR \8230;
third row: RGRGRGRG (RGRGRG) \8230;
fourth row: BRBRBR 8230, 8230;
·
·
·
line 2N-1: RGRGRGRG (RGRGRG) \8230;
line 2N: BRBRBR 8230, 8230;
2N +1 line: RGRGRGG (for example, RGRGRGRG) 8230, RGRGRGRGRGRGRG 8230.
Wherein the length of the R pixels is smaller than the length of the other pixels on each row along the X direction in the pixel structure, for example, the first pixel group on the odd-numbered row includes R pixels and G pixels, and the length of the G pixels is larger than the length of the R pixels; the second pixel group on the even-numbered lines includes R pixels and B pixels, the length of which is greater than that of the R pixels.
Through the design that long and short pixels alternate and arrange, the gap between adjacent pixels can be reduced, the pixel density is increased, the aperture opening ratio of the pixels is improved, and the organic light-emitting device is more suitable for being prepared by adopting an ink-jet printing mode through improving the pixel structure.
In some embodiments, the spacing between adjacent subpixels in the row direction is equal; the length of all sub-pixels in the column direction is equal. That is, in fig. 1, the pitches between adjacent sub-pixels are equal in the X direction, and the lengths of the sub-pixels are equal in the Y direction.
Through with each equidistant design of subpixel for the removal of printer when printing is more stable, improves printing efficiency, is of value to the volume production that realizes the inkjet printing product.
In some embodiments, the first sub-pixel of the first pixel group is aligned with a center of the third sub-pixel of the corresponding second pixel group in a column direction, and the second sub-pixel of the first pixel group is aligned with a center of the first sub-pixel of the corresponding second pixel group in the column direction.
Specifically, with continued reference to fig. 1, the R pixels in the first pixel group in the odd-numbered rows on the adjacent columns are disposed in positional correspondence with the B pixels in the second pixel group in the even-numbered rows, and the centers of the R pixels and the B pixels are aligned in the Y direction (i.e., the center line of the R pixel coincides with the center line of the B pixel in the X direction); the R pixels in the second pixel group in the even-numbered row are disposed in positional correspondence with the G pixels in the first pixel group in the odd-numbered row, and the centers of the R pixels and the G pixels are aligned in the Y direction (i.e., the center line of the R pixels coincides with the center line of the G pixels in the X direction).
The center of two adjacent sub-pixels in the row direction is aligned, so that the printing frequency control of the printer and the control of a printing algorithm in an ink jet process can be facilitated, and the printing speed is improved.
Because each sub-pixel of the OLED can emit light by itself, the sub-pixels with different colors have different light emitting life because of different materials, wherein the life of the blue (B) pixel is shortest, the area of the B pixel is increased, the life of the blue pixel can be prolonged, and meanwhile, the reduction of the areas of other pixels can make the overall life of the pixel structure tend to be average.
Therefore, in some embodiments, the length of the second sub-pixel in the row direction and the length of the third sub-pixel in the row direction are each twice the length of the first sub-pixel in the row direction.
In one specific example, referring to fig. 1, the lengths of the G pixel and the B pixel in the X direction are the same and equal to twice the length of the R pixel in the X direction, and since the lengths of the three RGB sub-pixels in the Y direction are all the same, the area ratio among the R pixel, the G pixel, and the B pixel is: 1:2:2.
It is easy to understand that the screen of the OLED display is composed of pixel units, and each pixel unit is composed of sub-pixels (RGB), and different colors are formed by different brightness.
As shown in fig. 2, fig. 2 is a schematic diagram of a pixel unit composed of sub-pixels in the pixel structure provided by the present embodiment, wherein fig. 2 (B) is a pixel unit formed by combining part of the sub-pixels in fig. 2 (a), in which the number ratio among the R pixels, the G pixels, and the B pixels in the pixel unit is: 4.
By increasing the number and the length of the B pixels, the area of the B pixels in the pixel unit can be increased, when the pixel structure is driven to emit light in two driving modes, the light emitting efficiency and the light emitting service life of the B pixels can be respectively increased, and the problem of color cast caused by insufficient light emitting brightness of the B pixels is prevented.
Another embodiment of the present application provides a manufacturing method of a pixel structure, which is used for preparing the pixel structure provided in the foregoing embodiment, and as shown in fig. 3, the manufacturing method of the pixel structure includes:
s10, forming a pixel defining layer on a substrate, wherein the pixel defining layer comprises a first opening group and a second opening group which are alternately arranged in a column direction, each first opening group comprises a first sub opening and a second sub opening which are alternately arranged in a row direction, and each second opening group comprises a third sub opening and a first sub opening which are alternately arranged in the row direction;
in one specific example, each sub-pixel is formed in a pixel pit (i.e., an opening) surrounded by a pixel defining layer disposed on a flat layer with a TFT array and a driving circuit.
And S20, forming the first sub-pixel, the second sub-pixel and the third sub-pixel in the first sub-opening, the second sub-opening and the third sub-opening respectively by utilizing an ink-jet printing process.
It should be noted that, the formation between the pixel defining layers defines the precise flow of ink drops into the designated R/G/B pixel region, and the volume of ink drops allowed by the internal volume of the pixel region is smaller than the volume of the device film thickness, which results in the ink drops filling the pixel pits during the printing process. In order to ensure that the ink drop can accurately enter the pixel area and not fall outside the designated pixel area during the printing process, because the center of the ink drop is located at the center of the long edge of the pixel area, a safe distance (keep out) for the ink drop to enter the pixel area must be ensured, as shown by the dotted line in fig. 4.
Thus, in some embodiments, step S20 comprises the following sub-steps:
s201, when forming second sub-pixels through ink jet printing, arranging a first safety boundary, which is formed by spraying ink in the second sub-openings, to be away from the edges of the second sub-openings in the row direction, wherein the first safety boundary is overlapped with the middle line between a corresponding first sub-opening in a second opening group adjacent to the first sub-openings in the column direction and a third sub-opening adjacent to the first sub-opening in the column direction;
and S202, when the third sub-pixel is formed through ink jet printing, arranging a second safety boundary, which is formed by spraying ink in the third sub-opening and is far from the edge of the third sub-opening in the row direction, wherein the second safety boundary is overlapped with a middle line between a corresponding first sub-opening in a first opening group adjacent to the third sub-opening in the column direction and a second sub-opening adjacent to the first sub-opening in the column direction.
In one specific example, referring to the figure, the first sub-opening corresponds to an R pixel, the second sub-opening corresponds to a G pixel, and the third sub-opening corresponds to a B pixel.
When inkjet printing forms a G pixel in the first row in fig. 4, the security boundaries for that G pixel are: the left boundary line is coincident with a middle line of the space between the R pixel corresponding to the G pixel in position and the adjacent B pixel on the left side in the second row; the right boundary line is superposed with a middle line of the space between the R pixel corresponding to the G pixel in position and the adjacent B pixel on the right side in the second row; the security boundary set at the time of forming the G pixel is the area between the left and right boundary lines.
The security margin setting method for the B pixel is the same as the above-described design method for the G pixel.
The distance between the safety boundary of the G pixel and the safety boundary of the B pixel and the edge of the safety boundary can be just set to be one fifth of the distance between the safety boundary of the G pixel and the edge of the B pixel, and when the printing is carried out, because the intervals of two sides of the opening in the pixel are equal, the atmosphere consistency is higher, the frequency and the algorithm of a printer are conveniently controlled, the mass production of ink-jet printing products is facilitated, and the requirement of high-pixel-density products is met.
Based on the above pixel structure, another embodiment of the present application provides a display panel, as shown in the figure, the display panel includes: the pixel structure and the driving circuit provided by the foregoing embodiment, wherein the first sub-pixel, the second sub-pixel and the third sub-pixel of the pixel structure are a red sub-pixel (R pixel), a green sub-pixel (G pixel) and a blue sub-pixel (B pixel), respectively, wherein the blue sub-pixel in the second pixel group includes a first blue sub-pixel and a second blue sub-pixel which are alternately arranged, and each sub-pixel includes a switching element and a light emitting element;
the drive circuit (for clear representation, each type of scanning line is drawn in different figures) includes:
as shown in fig. 5, a first scan line connected to a control terminal of the switching element of the red sub-pixel;
as shown in fig. 6, a second scan line connected to the control terminal of the switching element of the green sub-pixel;
a third scanning line connected to the control terminal of the switching element of the first blue subpixel as shown in fig. 7;
as shown in fig. 8, a fourth scan line connected to the control terminal of the switching element of the second blue sub-pixel;
as shown in fig. 9, the first data lines respectively connected to the first ends of the switching elements of the red sub-pixel and the first blue sub-pixel, wherein the second ends of the switching elements of the red sub-pixel and the first blue sub-pixel are connected to the anodes of the light emitting elements in the corresponding sub-pixels;
as shown in fig. 10, the second data lines are respectively connected to the first terminals of the switching elements of the green sub-pixel and the second blue sub-pixel, wherein the second terminals of the switching elements of the green sub-pixel and the second blue sub-pixel are connected to the anodes of the light emitting elements in the corresponding sub-pixels.
Specifically, the switching element is a three-terminal switching device, such as a transistor Thin Film Transistor (TFT), a control terminal is a gate of the TFT, a first terminal is a source, and a second terminal is a drain. It will be understood by those skilled in the art that the first terminal is referred to as either a source or a drain and the second terminal is referred to as either a drain or a source, just for differences in nomenclature.
In one specific example, the first to fourth scan lines are connected to a gate electrode of the TFT, the first data line and the second data line are connected to a source electrode of the TFT, and a drain electrode of the TFT is connected to an anode electrode of the light emitting element of the corresponding sub-pixel.
For the R pixels and the G pixels of the first pixel group in the first row, when the first scan line and the fourth scan line receive the enable signal (substantially, receiving line by line), when the first data line receives the data signal, the R pixels connected to the first data line emit light, at this time, if the second data line does not receive the data signal, the G pixels connected to the second data line do not emit light, and if the second data line is at a high level, the G pixels connected to the second data line also emit light; similarly, when the first data line does not receive the data signal, the R pixel connected to the first data line does not emit light, and at this time, if the second data line does not receive the data signal, the G pixel connected to the second data line does not emit light, and if the second data line receives the data, the G pixel connected to the second data line emits light. So as to control whether the sub-pixel emits light or not. When the first scanning line and the fourth scanning line do not receive the enable signal, the R pixel and the G pixel do not emit light.
It is easily understood that, for a sub-pixel, it can achieve light emission only in the case where its connected scan line receives an enable signal and the data line receives a data signal.
For example, in the first row, the first scan line connected to the R pixel and the second scan line connected to the G pixel are the same scan line and receive the same signal, as shown in fig. 5 and 6.
Another embodiment of the present application provides a method of driving the aforementioned display panel, the method including a first driving mode and a second driving mode, and, in particular,
in the first mode of the drive, the drive motor is,
the first scanning line to the fourth scanning line receive enabling signals, and the switch elements of the sub-pixels receiving the enabling signals are conducted;
the first data line receives a data signal, so that the light-emitting elements in the red sub-pixel and the first blue sub-pixel emit light;
the second data line receives a data signal, so that the light emitting elements in the green sub-pixel and the second blue sub-pixel emit light.
In the first driving mode, the first to fourth scan lines receive enable signals and the first and second data lines receive data signals, so that all the sub-pixels emit light.
In the driving mode, two blue sub-pixels in the same pixel unit and in the same row emit light simultaneously, so that the light emitting efficiency of the blue sub-pixels is improved, and the problem of low light emitting efficiency of the blue sub-pixels is solved.
In the second mode of the drive, the drive voltage is set to,
enabling signals are received by the first scanning line to the second scanning line, enabling signals are alternately received by the third scanning line and the fourth scanning line in time, and the switching elements of the sub-pixels receiving the enabling signals are conducted;
when the third scanning line receives an enabling signal, the first data line receives a data signal, so that the light-emitting elements in the red sub-pixel and the first blue sub-pixel emit light;
when the fourth scanning line receives the enabling signal, the second data line receives the data signal, so that the light-emitting elements in the green sub-pixel and the second blue sub-pixel emit light.
In one specific example, when the third scan line starts to receive the enable signal, the fourth scan line does not receive the enable signal, simultaneously, the first scan line and the fourth scan line receive the enable signal, and the first data line and the second data line receive the data signal simultaneously, at this time, the first blue sub-pixel in the second pixel group emits light simultaneously with the red sub-pixel and the green sub-pixel in the pixel structure, and the second blue sub-pixel in the second pixel group does not emit light; when the fourth scanning line starts to receive the enabling signal, the third scanning line does not receive the enabling signal any more, meanwhile, the first scanning line and the fourth scanning line receive the enabling signal, the first data line and the second data line receive the data signal at the same time, at this time, the second blue sub-pixel in the second pixel group and the red sub-pixel and the green sub-pixel in the pixel structure emit light at the same time, and the first blue sub-pixel in the second pixel group does not emit light.
In the second driving mode, the blue sub-pixels in the pixel structure emit light alternately, so that the service life of the blue sub-pixels can be prolonged.
Another embodiment of the present application provides a display device including the above display panel. The display device may be any product or component having a display function, such as electronic paper, a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, and a navigator, which is not limited in this embodiment.
The expression "formed on 8230, the" \ 8230on "\ 8230"; "formed on" \ 8230; "disposed on" \ 8230 ";" formed on "\ 8230on"; "may indicate that one layer is directly formed or disposed on the other layer, or that one layer is indirectly formed or disposed on the other layer, that is, that another layer is present between the two layers.
It should be noted that, although the terms "first", "second", etc. may be used herein to describe various elements, components, elements, regions, layers and/or sections, these elements, components, elements, regions, layers and/or sections should not be limited by these terms. Rather, these terms are used to distinguish one element, component, element, region, layer or section from another. Thus, for example, a first component, a first member, a first element, a first region, a first layer, and/or a first portion discussed below could be termed a second component, a second member, a second element, a second region, a second layer, and/or a second portion without departing from the teachings of the present application.
In this application, unless otherwise indicated, the term "disposed on the same layer" is used to indicate that two layers, components, members, elements or portions may be formed by the same fabrication process (e.g., patterning process, etc.), and the two layers, components, members, elements or portions are generally formed of the same material. For example, two or more functional layers are arranged in the same layer, which means that the functional layers arranged in the same layer can be formed by using the same material layer and using the same manufacturing process, so that the manufacturing process of the display substrate can be simplified.
In the present application, unless otherwise specified, the expression "patterning process" generally includes the steps of coating of a photoresist, exposure, development, etching, stripping of the photoresist, and the like. The expression "one-time patterning process" means a process of forming a patterned layer, member, or the like using one mask plate.
In the description of the present application, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present application. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as the case may be.
It should also be noted that, in the description of the present application, relational terms such as first and second, and the like are used only for distinguishing one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a," "8230," "8230," or "comprising" does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.
It should be understood that the above-mentioned examples are given for the purpose of illustrating the present application clearly and not for the purpose of limiting the same, and that various other modifications and variations of the present invention may be made by those skilled in the art in light of the above teachings, and it is not intended to be exhaustive or to limit the invention to the precise form disclosed.
Claims (9)
1. A pixel structure, comprising:
the pixel structure comprises a substrate, a first pixel group and a second pixel group which are arranged on the substrate in a column direction in an alternating mode, wherein each first pixel group comprises a first sub-pixel and a second sub-pixel which are arranged in a row direction in an alternating mode;
the first sub-pixels of the first pixel group are aligned with the centers of the third sub-pixels of the corresponding second pixel group in the column direction, and the second sub-pixels of the first pixel group are aligned with the centers of the first sub-pixels of the corresponding second pixel group in the column direction.
2. The pixel structure according to claim 1, wherein the length of the second sub-pixel in the row direction and the length of the third sub-pixel in the row direction are respectively twice the length of the first sub-pixel in the row direction.
3. The pixel structure of claim 1,
the pitches of the adjacent sub-pixels in the row direction are equal;
the length of the first sub-pixel in the column direction, the length of the second sub-pixel in the column direction, and the length of the third sub-pixel in the column direction are equal.
4. The pixel structure according to any one of claims 1-3, wherein the first sub-pixel, the second sub-pixel and the third sub-pixel are a red sub-pixel, a green sub-pixel and a blue sub-pixel, respectively, and wherein the blue sub-pixels in the second pixel group comprise first blue sub-pixels and second blue sub-pixels arranged alternately.
5. A method of fabricating a pixel structure according to any one of claims 1-4, comprising:
forming a pixel defining layer on a substrate, including first opening groups and second opening groups alternately arranged in a column direction, each of the first opening groups including first sub openings and second sub openings alternately arranged in a row direction, each of the second opening groups including third sub openings and first sub openings alternately arranged in the row direction;
and forming the first sub-pixel, the second sub-pixel and the third sub-pixel in the first sub-opening, the second sub-opening and the third sub-opening respectively by using an ink-jet printing process.
6. The method of claim 5,
when forming the second sub-pixels by ink-jet printing, setting a first safety margin in which ink is ejected in the second sub-apertures at a distance from edges of the second sub-apertures in a row direction, wherein the first safety margin coincides with a center line between a corresponding first sub-aperture in a second aperture group adjacent to each other in a column direction and a third sub-aperture adjacent to the first sub-aperture in the column direction;
when the third sub-pixels are formed by ink jet printing, a second security boundary is provided in the third sub-apertures, the second security boundary being ink-jet coated in the row direction from an edge of the third sub-apertures, wherein the second security boundary coincides with a center line between a corresponding first sub-aperture in a first aperture group adjacent in the column direction and a second sub-aperture adjacent to the first sub-aperture in the column direction.
7. A display panel, comprising:
the pixel structure of any one of claims 1-3, wherein the first, second, and third sub-pixels are red, green, and blue sub-pixels, respectively, wherein the blue sub-pixels in the second pixel group include first and second blue sub-pixels alternately arranged, each sub-pixel including a switching element and a light emitting element;
a drive circuit, comprising:
a first scan line connected to a control terminal of the switching element of the red sub-pixel;
a second scanning line connected with the control end of the switching element of the green sub-pixel;
a third scan line connected to a control terminal of the switching element of the first blue subpixel;
a fourth scan line connected to a control terminal of the switching element of the second blue subpixel;
a first data line connected to first ends of the switching elements of the red and first blue sub-pixels, respectively, wherein second ends of the switching elements of the red and first blue sub-pixels are connected to anodes of the light emitting elements in the corresponding sub-pixels;
and a second data line respectively connected to first ends of the switching elements of the green and second blue sub-pixels, wherein second ends of the switching elements of the green and second blue sub-pixels are connected to anodes of the light emitting elements in the corresponding sub-pixels.
8. A method of driving the display panel of claim 7, comprising a first driving mode and a second driving mode, wherein,
in the first mode of the drive, the drive voltage is set to,
the first scanning line to the fourth scanning line receive enabling signals, and the switch elements of the sub-pixels receiving the enabling signals are conducted;
the first data line receives a data signal to make the light emitting elements in the red sub-pixel and the first blue sub-pixel emit light;
the second data line receives a data signal to make the light emitting elements in the green sub-pixel and the second blue sub-pixel emit light,
in the second mode of driving, the first driving mode,
enabling signals are received by the first scanning line to the second scanning line, enabling signals are alternately received by the third scanning line and the fourth scanning line in time, and the switching elements of the sub-pixels receiving the enabling signals are conducted;
when the third scanning line receives an enabling signal, the first data line receives a data signal, so that the light-emitting elements in the red sub-pixel and the first blue sub-pixel emit light;
when the fourth scanning line receives the enable signal, the second data line receives the data signal, so that the light-emitting elements in the green sub-pixel and the second blue sub-pixel emit light.
9. A display device comprising the display panel according to claim 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110116021.XA CN112968038B (en) | 2021-01-28 | 2021-01-28 | Pixel structure, manufacturing method, display panel and driving method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110116021.XA CN112968038B (en) | 2021-01-28 | 2021-01-28 | Pixel structure, manufacturing method, display panel and driving method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112968038A CN112968038A (en) | 2021-06-15 |
| CN112968038B true CN112968038B (en) | 2023-04-07 |
Family
ID=76273369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110116021.XA Active CN112968038B (en) | 2021-01-28 | 2021-01-28 | Pixel structure, manufacturing method, display panel and driving method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112968038B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111146262A (en) * | 2020-01-17 | 2020-05-12 | 深圳市华星光电半导体显示技术有限公司 | Array substrate and display panel |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4684046B2 (en) * | 2005-03-30 | 2011-05-18 | 三洋電機株式会社 | Display device |
| KR102037273B1 (en) * | 2012-12-28 | 2019-11-27 | 삼성디스플레이 주식회사 | Organic light emitting device |
| CN105552102B (en) * | 2015-12-23 | 2019-07-02 | 昆山国显光电有限公司 | Pixel arrangement structure and its manufacturing method, display |
| CN108511480A (en) * | 2017-08-31 | 2018-09-07 | 昆山国显光电有限公司 | Dot structure and OLED display |
| CN107591432B (en) * | 2017-09-27 | 2020-05-26 | 京东方科技集团股份有限公司 | Pixel defining layer, display substrate, manufacturing method and display device |
-
2021
- 2021-01-28 CN CN202110116021.XA patent/CN112968038B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111146262A (en) * | 2020-01-17 | 2020-05-12 | 深圳市华星光电半导体显示技术有限公司 | Array substrate and display panel |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112968038A (en) | 2021-06-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9768382B2 (en) | Display substrate, its manufacturing method and display device | |
| US7923919B2 (en) | Organic electroluminescent panel and production method thereof, and color filter substrate and production method thereof | |
| JP4318455B2 (en) | Color filter forming method, light emitting element layer forming method, color display device manufacturing method using the same, or color display device | |
| KR101921374B1 (en) | High resolution organic light-emitting diode devices | |
| CN111463353B (en) | Display substrate, preparation method thereof and display device | |
| TWI261480B (en) | Display device, manufacturing method for display device, and electronic apparatus | |
| CN111293152B (en) | Display substrate, preparation method thereof and electroluminescent display device | |
| CN111640772B (en) | Display panel, manufacturing method thereof and display device | |
| US11594579B2 (en) | Display substrates, display devices and methods of forming display substrates and devices | |
| CN111312791B (en) | Display panel, manufacturing method thereof and display device | |
| CN111192979B (en) | Method for manufacturing display panel and functional layer forming apparatus | |
| CN114361231A (en) | Display panel and display device | |
| WO2016063471A1 (en) | Display panel | |
| CN113193007A (en) | Display panel, preparation method thereof and display device | |
| CN110620133B (en) | Transparent display panel, preparation method thereof and display device | |
| CN112968038B (en) | Pixel structure, manufacturing method, display panel and driving method | |
| CN114649391A (en) | Display panel | |
| CN113990903A (en) | Display substrate and display panel | |
| US11398529B2 (en) | Display panel and manufacturing method thereof | |
| CN219660309U (en) | Display panel and display device thereof | |
| US20240049514A1 (en) | Display panel | |
| GB2463670A (en) | A method for inkjet printing organic electronic devices | |
| CN116648092A (en) | Display substrate, preparation method thereof and display device | |
| CN117795692A (en) | Display panel and display device | |
| CN117529145A (en) | Display panel and display terminal |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |