WO2019041958A1 - 一种像素结构及oled显示面板 - Google Patents

一种像素结构及oled显示面板 Download PDF

Info

Publication number
WO2019041958A1
WO2019041958A1 PCT/CN2018/090495 CN2018090495W WO2019041958A1 WO 2019041958 A1 WO2019041958 A1 WO 2019041958A1 CN 2018090495 W CN2018090495 W CN 2018090495W WO 2019041958 A1 WO2019041958 A1 WO 2019041958A1
Authority
WO
WIPO (PCT)
Prior art keywords
pixel
sub
pixel unit
pixels
unit
Prior art date
Application number
PCT/CN2018/090495
Other languages
English (en)
French (fr)
Inventor
冯丹丹
朱修剑
胡小叙
Original Assignee
昆山国显光电有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 昆山国显光电有限公司 filed Critical 昆山国显光电有限公司
Priority to US16/323,353 priority Critical patent/US11302750B2/en
Priority to EP18851242.0A priority patent/EP3678184A4/en
Priority to KR1020197032735A priority patent/KR20190131580A/ko
Priority to JP2019563355A priority patent/JP7005657B2/ja
Publication of WO2019041958A1 publication Critical patent/WO2019041958A1/zh

Links

Images

Classifications

    • 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]
    • 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
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/04—Structural and physical details of display devices
    • G09G2300/0439—Pixel structures
    • G09G2300/0452—Details of colour pixel setup, e.g. pixel composed of a red, a blue and two green components
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/04—Structural and physical details of display devices
    • G09G2300/0439—Pixel structures
    • G09G2300/0465—Improved aperture ratio, e.g. by size reduction of the pixel circuit, e.g. for improving the pixel density or the maximum displayable luminance or brightness
    • 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
    • G09G3/2003—Display of colours

Definitions

  • the present application relates to the field of display technologies, and in particular, to a pixel structure and an OLED display panel including the same.
  • An OLED Organic Light-Emitting Diode
  • LCD Liquid Crystal Display
  • the OLED display technology does not require a backlight and has self-luminous characteristics.
  • the OLED uses a thinner organic material film layer and a glass substrate, and when an electric current passes, the organic material film layer emits light. Therefore, the OLED display panel can significantly save power, can be made lighter and thinner, can withstand a wider range of temperature changes than the LCD display panel, and has a larger viewing angle.
  • the OLED display panel is expected to become the next-generation flat panel display technology after LCD, and is one of the most popular technologies in flat panel display technology.
  • OLED colorization technology that is now mature and has been successfully mass-produced is mainly OLED evaporation technology, which uses conventional RGB Stripe (RGB strip) arrangement for evaporation.
  • RGB stripe RGB strip
  • the side-by-side method has three sub-pixels of red, green, and blue (R, G, B) in a pixel (Pixel) range, each sub-pixel is quadrilateral, and each has an independent organic A light-emitting component, which uses an evaporation metallization technique to form an organic light-emitting component through a FMM (Fine Metal Mask) at a corresponding pixel position on an array substrate, and the FMM is generally referred to as a metal mask or Evaporation mask.
  • FMM Feine Metal Mask
  • the technology of producing an OLED display panel with a high PPI (Pixel Per Inch, the number of pixels per inch) focuses on the fine and mechanically stable FMM and the arrangement of pixels (sub-pixels).
  • FIG. 1 is a schematic diagram of pixel arrangement of an OLED display panel in the prior art. As shown in FIG. 1 , the OLED display panel adopts a pixel juxtaposition manner, and 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 R.
  • the G sub-pixel region 103 includes a G light-emitting region 104 and a G non-light-emitting region (not labeled)
  • the B-sub-pixel region 105 includes a B light-emitting region 106 and a B non-light-emitting region (not Label).
  • the R, G, and B sub-pixel regions and the light-emitting region areas shown in FIG. 1 are respectively equal, and the R, G, and B sub-pixels are arranged in a line.
  • a cathode, an anode, and an electroluminescent layer are included, wherein the electroluminescent layer is located between the cathode and the anode for generating a predetermined color Light to achieve display.
  • the electroluminescent layer is located between the cathode and the anode for generating a predetermined color Light to achieve display.
  • the OLED display panel shown in FIG. 1 is generally vapor-deposited by using the FMM shown in FIG. 2, and the FMM includes a shielding area 107 and a plurality of vapor deposition openings 108, and an occlusion area between two adjacent vapor deposition openings 108 in the same column. Call it bridge.
  • the FMM includes a shielding area 107 and a plurality of vapor deposition openings 108, and an occlusion area between two adjacent vapor deposition openings 108 in the same column.
  • the bridge In order to avoid the shadowing effect on the sub-pixels during evaporation, a sufficient distance must be maintained between the sub-pixels and the bridge, which causes the lengths of the sub-pixels to decrease, and affects the aperture ratio of each sub-pixel.
  • the traditional RGB juxtaposed pixel arrangement can only reach 200-300 PPI, which is difficult to achieve high-resolution display. With the increasing demand for OLED display panel resolution, this RGB pixel juxtaposition can no longer meet the design requirements of
  • FIG. 3 is a schematic diagram of pixel arrangement of another OLED display panel in the prior art. As shown in FIG. 3, only G sub-pixels are used exclusively for each pixel unit, and R and B sub-pixels are shared by adjacent pixel units. For example, pixel unit 201 and pixel unit 202 share R sub-pixels. In this way, the PPI of the display screen can be improved. However, in this arrangement, the R and B sub-pixels are shared by adjacent pixel units, and the entire display effect may be distorted, which is not a true color display in the true sense.
  • the main purpose of the present application is to propose a pixel structure and an OLED display panel, which aim to solve the problems existing in the prior art.
  • a first aspect of the embodiments of the present application provides a pixel structure, where the pixel structure includes a plurality of pixel unit groups, each pixel unit group includes a first direction and a first direction a first pixel unit and a second pixel unit that are offset in a vertical second direction,
  • the first pixel unit and the second pixel unit respectively include three different color sub-pixels disposed along the second direction, respectively belonging to the same color of the first pixel unit and the second pixel unit
  • the distance of the two sub-pixels in the first direction is equal to the distance in the second direction.
  • a center line extending along the first direction between the first sub-pixel of the second pixel unit and a first sub-pixel and a second sub-pixel of the first pixel unit The boundary lines are coincident, or a center line extending along the first direction of the first sub-pixel in the first pixel unit and a first sub-pixel and a second sub-pixel in the second pixel unit The boundary lines coincide.
  • the first pixel unit includes a first sub-pixel, a second sub-pixel, and a third sub-pixel sequentially arranged along the second direction, where the second pixel unit includes sequentially arranged along the second direction The third sub-pixel, the first sub-pixel, and the second sub-pixel.
  • the aspect ratio of each of the sub-pixels ranges from 1 to 1.5.
  • distances between centers of two adjacent sub-pixels are equal to each other.
  • the shape and the area of the sub-pixels of the same color in the first pixel unit and the second pixel unit are the same.
  • the sub-pixel is composed of a red sub-pixel, a green sub-pixel, and a blue sub-pixel.
  • each sub-pixel in the pixel unit group has the same shape and area.
  • the area of the red sub-pixel is the same as the area of the green sub-pixel, and the area of the blue sub-pixel is larger than the area of the red sub-pixel.
  • the first direction is a row direction
  • the second direction is a column direction
  • the first direction is a column direction
  • the second direction is a row direction
  • a second aspect of the present application provides an OLED display panel, which includes any of the pixel structures described in the first aspect.
  • the pixel structure and the OLED display panel provided by the embodiments of the present application can realize full-color display in a true sense by the following features, and the arrangement is compact and the pixel pitch is reduced, and the PPI is improved: adjacently disposed in the first direction and respectively containing three a first pixel unit and a second pixel unit of the sub-pixels of different colors, the sub-pixels arranged in the second direction, the center line of the third sub-pixel in the second pixel unit extending along the first direction a boundary line between the first sub-pixel and the second sub-pixel in the pixel unit is coincident, and the distance between the two sub-pixels of the same color of the first pixel unit and the second pixel unit respectively in the first direction and in the second direction The distance is equal; by sharing the adjacent sub-pixels, one pixel unit can display the display effect of two pixels, thereby improving the screen display resolution and the production yield, and reducing the difficulty of the evaporation mask manufacturing process and the evaporation process. .
  • FIG. 1 is a schematic diagram of a pixel arrangement of an OLED display panel in the prior art
  • FIG. 2 is a schematic view of an FMM corresponding to FIG. 1;
  • FIG. 3 is a schematic diagram of pixel arrangement of another OLED display panel in the prior art
  • FIG. 4 is a schematic structural diagram of a pixel according to an embodiment of the present application.
  • FIG. 5 is a schematic structural diagram of a pixel unit group in a pixel structure according to an embodiment of the present application.
  • FIG. 6 is a schematic structural diagram of a pixel unit group having different pixel opening aspect ratios in a pixel structure according to an embodiment of the present application.
  • FIG. 8 is a schematic diagram showing the display of a pixel structure according to an embodiment of the present application.
  • 9a-9b are schematic diagrams showing another structure of a pixel according to an embodiment of the present application.
  • first direction is the X direction (which may also be referred to as the row direction or the lateral direction), and the second direction is the Y direction (which may be referred to as the column direction or the longitudinal direction).
  • the first direction is perpendicular to the second direction.
  • the number of pixel units in the actual product is not limited thereto, and the number of pixel units may be changed according to the actual display needs.
  • the first row, the second row, the first column, the second column, and the like described in the present application are for reference to the present application as illustrated in the drawings, and do not refer to rows and columns in actual products.
  • first direction and the second direction in this embodiment may not be perpendicular.
  • first direction and the second direction are perpendicular.
  • the pixel structure provided by the first embodiment of the present application includes a plurality of pixel unit groups, each of the pixel unit groups including adjacent ones in the first direction and offset in the second direction and respectively containing three The first pixel unit 30 and the second pixel unit 31 of the sub-pixels of different colors. a first sub-pixel of the second pixel unit 31 (the sub-pixel located at the uppermost position) and a center line extending along the first direction and a first sub-pixel of the first pixel unit 30 The boundary line between the second sub-pixel (the sub-pixel located at the middle position) coincides;
  • a first sub-pixel of the first pixel unit 30 extends along a center line extending in a first direction and the second pixel unit 31.
  • the boundary line between the first sub-pixel and the second sub-pixel coincides.
  • the first pixel unit 30 includes a first sub-pixel 301, a second sub-pixel 303, and a third sub-pixel 305 that are sequentially arranged in a second direction; the second pixel unit 31 includes a third row that is sequentially arranged in the second direction.
  • the sub-pixel arrangement structure in the first pixel unit 30 and the second pixel unit 31 is not limited to the case of FIGS. 4-8.
  • the sub-pixel arrangement can include a variety of different permutations and combinations, for example, Figure 9a, Figure 9b is a different situation than Figure 4.
  • Figure 9a Figure 9a
  • Figure 9b is a different situation than Figure 4.
  • FIGS. 4-8 will be described below.
  • each sub-pixel may be a rectangle or a rectangle, which is not limited in this embodiment.
  • the first sub-pixel, the second sub-pixel, and the third sub-pixel in the first pixel unit 30 or the second pixel unit 31 are composed of a red (R) sub-pixel, a green (G) sub-pixel, and a blue (B) Sub-pixel configuration.
  • the first sub-pixel is one of a red (R) sub-pixel, a green (G) sub-pixel, and a blue (B) sub-pixel
  • the second sub-pixel is a red (R) sub-pixel
  • the third sub-pixel being one of a red (R) sub-pixel, a green (G) sub-pixel, and a blue (B) sub-pixel
  • the colors of one sub-pixel, the second sub-pixel, and the third sub-pixel are different from each other.
  • the first sub-pixel 301 in the first pixel unit 30 is a red (R) sub-pixel
  • the second sub-pixel 303 is a green (G) sub-pixel
  • the third sub-pixel 305 is blue (B).
  • the first sub-pixel 301 includes a red (R) light-emitting region 302 and a red (R) non-light-emitting region (not labeled in the drawing), and includes an organic emission layer for emitting red light;
  • the second sub-pixel 303 A green (G) light emitting region 304 and a green (G) non-light emitting region (not labeled) are included, and include an organic light emitting layer for emitting green light;
  • the third subpixel 305 includes a blue (B) light emitting region 306 and Blue (B) non-light-emitting region (not labeled in the drawing), and includes an organic emission layer for emitting blue light.
  • the first sub-pixel 313 in the second pixel unit 31 is a red (R) sub-pixel
  • the second sub-pixel 315 is a green (G) sub-pixel
  • the third sub-pixel 311 is a blue (B) sub-pixel; therefore, the first A sub-pixel 313 includes a red (R) light-emitting region 314 and a red (R) non-light-emitting region (not labeled in the drawing), and includes an organic emission layer for emitting red light
  • the second sub-pixel 315 includes green (G) light emission.
  • the third sub-pixel 311 includes a blue (B) light-emitting region 312 and a blue (B) non- A light-emitting region (not labeled in the drawing) and including an organic emission layer for emitting blue light.
  • the common edge is the boundary line between the first sub-pixel 301 and the second sub-pixel 302.
  • the "boundary” or “boundary line” herein is not limited to the “boundary” or “boundary line” of an entity, but may refer to a virtual "boundary” or “boundary” between two pixel sub-pixels. line”.
  • the distances of the two sub-pixels of the same color belonging to the first pixel unit 30 and the second pixel unit 31, respectively, in the first direction are equal to the distances in the second direction. That is, the distance between the two sub-pixels of the same color in the pixel unit group in the first direction and the distance in the second direction are equal.
  • the R sub-pixel of the first column and the R sub-pixel of the second column have a distance x in the row direction, a distance y in the column direction, and x is equal to y;
  • the G sub-pixel of the first column With the G sub-pixels of the second column, the distance in the row direction is x, the distance in the column direction is y, and x is equal to y;
  • the B sub-pixel is similar to the above (not shown in the drawing), and will not be described herein.
  • Each pixel unit of the embodiment is composed of RGB three-color sub-pixels, which can realize full-color display in a true sense; on the other hand, can be simultaneously applied to display panels having the same or different resolution in the first direction and the second direction.
  • one pixel unit can display the display effect of two pixels, thereby improving the virtual display resolution of the screen.
  • the pixel arrangement is shared by the first direction, and the resolution can be doubled to 2n; the shared mode can be referred to the dotted triangle in FIG. For example, in FIG.
  • the R sub-pixel and the G sub-pixel of the third column are shared by the B sub-pixels of the second column and the fourth column adjacent thereto, and the B sub-pixel of the third column is second adjacent thereto
  • the column and the fourth column of R sub-pixels are shared with the G sub-pixels.
  • the respective aperture aspect ratios of the two sub-pixels of the same color belonging to the first pixel unit 30 and the second pixel unit 31 respectively range from 1 to 1.5.
  • the aspect ratio of the opening of the R sub-pixel is d:z, where d:z ranges from 1 to 1.5, and the G sub-pixel and the B sub-pixel are similar, and are not described herein.
  • the aspect ratio of the sub-pixel is 1.5
  • the design margin can be satisfied, and the bridge between the sub-pixels of the same color can be adjusted by adjusting the aspect ratio (such as b and graph in FIG. 6).
  • increasing the value of the bridge can improve the mechanical stability, reduce the difficulty of the precision metal mask manufacturing process and the evaporation process, and improve the production yield.
  • the value b1 of the bridge in FIG. 7 is greater than the value b of the bridge in FIG. 6, so that the mechanical stability of FIG. 7 is higher than that of FIG.
  • the precision metal mask manufacturing process and the evaporation process are less difficult and the production yield is higher.
  • the distance between the centers of two adjacent sub-pixels in the second direction is equal. This embodiment allows the pixel units to be further compactly arranged, reducing pixel pitch and increasing PPI.
  • the sub-pixels of the same color that belong to the first pixel unit 30 and the second pixel unit 31 respectively have the same shape and area.
  • the shape and area of the sub-pixels of the same color are the same, which can further reduce the difficulty of the metal mask fabrication process and the evaporation process. Further, the shape and area of each sub-pixel in the pixel unit group may also remain the same.
  • the area of the red sub-pixel and the area of the green sub-pixel may be the same, and the area of the blue sub-pixel may be larger than the red.
  • a second embodiment of the present application provides an OLED display panel, where the OLED display panel includes the pixel structure described in the first embodiment.
  • the pixel structure can refer to the first embodiment, and details are not described herein.
  • the aspect ratio of the real pixel may be 2:1, and each column of sub-pixels corresponds to display one column of pixels, and the following two methods may be adopted when driving the display:
  • the first driving display mode is such that a portion of the sub-pixel corresponding to the image RGB located in the dotted frame is not displayed;
  • the second driving display mode is such that a portion of the sub-pixel corresponding to the image RGB is displayed in a small scale (for example, 30%) in brightness, so that a portion of the sub-pixel corresponding to the image RGB that is not located in the dotted frame is performed.
  • a large proportion (such as 70%) brightness display which can ensure the difference in brightness of adjacent columns in the horizontal direction, and can also make the display of single point less than distortion, of course, the brightness display ratio can also be divided into half (ie, in the sub-pixel The part in the dotted line box is displayed with 50% brightness, and the part not in the dotted line box is also displayed with 50% brightness), so that the brightness of the adjacent two columns is the same, which will blur the display details and can be applied to the high PPI display.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Optics & Photonics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Electroluminescent Light Sources (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

一种像素结构及OLED显示面板，该像素结构包括多个像素单元组，每个像素单元组包括在第一方向上相邻且在与第一方向垂直的第二方向上错位设置的第一像素单元和第二像素单元，第一像素单元和第二像素单元分别包括沿该第二方向设置的三个不同颜色的子像素，分别属于该第一像素单元和该第二像素单元的相同颜色的两个子像素在第一方向上的距离和在第二方向上的距离相等。

Description

一种像素结构及OLED显示面板 技术领域
本申请涉及显示技术领域，尤其涉及一种像素结构及包含该像素结构的OLED显示面板。
背景技术
OLED(Organic Light-Emitting Diode，有机发光二极管)是主动发光器件。与传统的LCD(Liquid Crystal Display，液晶显示)显示方式相比，OLED显示技术无需背光源，具有自发光的特性。OLED采用较薄的有机材料膜层和玻璃基板，当有电流通过时，有机材料膜层就会发光。因此OLED显示面板能够显著节省电能，可以做得更轻更薄，比LCD显示面板耐受更宽范围的温度变化，而且可视角度更大。OLED显示面板有望成为继LCD之后的下一代平板显示技术，是目前平板显示技术中受到关注最多的技术之一。
OLED屏体的彩色化方法有许多种，现在较为成熟并已经成功量产的OLED彩色化技术主要是OLED蒸镀技术，其采用传统的RGB Stripe(RGB条状)排列方式进行蒸镀。其中画面效果最好的是side-by-side(并置)的方式。side-by-side方式是在一个像素(Pixel)范围内有红、绿、蓝(R、G、B)三个子像素(sub-pixel)，每个子像素均呈四边形，且各自具有独立的有机发光元器件，它是利用蒸镀成膜技术透过FMM(Fine Metal Mask，高精细金属掩膜版)在阵列基板上相应的像素位置形成有机发光元器件，FMM通常简称为金属掩膜版或蒸镀掩膜版。制作高PPI(Pixel Per Inch，每英寸所拥有的像素数目)的OLED显示面板的技术重点在于精细及机械稳定性好的FMM以及像素(子像素)的排布方式。
图1为现有技术中一种OLED显示面板的像素排布示意图。如图1所示，该OLED显示面板采用像素并置的方式，每个像素单元Pixel包括R子像素区域101、G子像素区域103以及B子像素区域105，其中，R子像素区域101包括R发光区102以及R非发光区(未标号)，G子像素区域103包括G发光区104以及G非发光区(未标号)，B子像素区域105包括B发光区106 以及B非发光区(未标号)。图1中所示R、G、B子像素区域和发光区面积分别相等，并且R、G、B子像素呈直线排列。具体而言，在每个子像素区域的发光区中，包括阴极、阳极和电致发光层(亦称为有机发射层)，其中，电致发光层位于阴极和阳极之间，用于产生预定颜色光线以实现显示。在制备现有技术中显示面板时，通常需要利用三次蒸镀工艺以分别在对应颜色像素区域的发光区中形成对应颜色(红色、绿色或蓝色)的电致发光层。
图1所示的OLED显示面板通常采用图2所示FMM进行蒸镀，该种FMM包括遮挡区107以及若干个蒸镀开口108，同一列相邻的两个蒸镀开口108之间的遮挡区称之为bridge(连接桥)。为了避免蒸镀时对子像素产生遮蔽效应，子像素与bridge间必须保持足够的距离，这就导致子像素上下的长度缩小，而影响了每一个子像素的开口率。传统的RGB并置像素排列方式，最高只能达到200～300PPI，难以实现高分辨率的显示效果。随着用户对OLED显示面板分辨率的需求越来越高，这种RGB像素并置的方式已不能满足产品高PPI的设计要求。
图3为现有技术中另一种OLED显示面板的像素排布示意图。如图3所示，每个像素单元仅有G子像素是独用的，R和B子像素均被相邻的像素单元共用，比如，像素单元201和像素单元202共用R子像素。这种方式可以提高显示屏的PPI，然而，这种排布方式中R和B子像素被相邻的像素单元共用，整个显示效果可能存在畸变，不是真正意义上的全彩显示。
发明内容
本申请的主要目的在于提出一种像素结构及OLED显示面板，旨在解决现有技术存在的问题。
为实现上述目的，本申请实施例第一方面提供一种像素结构，所述像素结构包括多个像素单元组，每个像素单元组包括在第一方向上相邻且在与所述第一方向垂直的第二方向上错位设置的第一像素单元和第二像素单元，
所述第一像素单元和所述第二像素单元分别包括沿所述第二方向设置的三个不同颜色的子像素，分别属于所述第一像素单元和所述第二像素单元的 相同颜色的两个子像素在所述第一方向上的距离和在所述第二方向上的距离相等。
可选的，所述第二像素单元中的第一个子像素沿着所述第一方向延伸的中心线与所述第一像素单元中的第一个子像素和第二个子像素之间的边界线重合，或所述第一像素单元中的第一个子像素沿着所述第一方向延伸的中心线与所述第二像素单元中的第一个子像素和第二个子像素之间的边界线重合。
可选的，所述第一像素单元包括沿所述第二方向依次排列的第一子像素、第二子像素和第三子像素，所述第二像素单元包括沿所述第二方向依次排列的第三子像素、第一子像素和第二子像素。
可选的，各所述子像素的开口长宽比的取值范围为1～1.5。
可选的，在所述第二方向上，相邻的两个子像素的中心之间的距离彼此相等。
可选的，所述第一像素单元和所述第二像素单元中的相同颜色的子像素的形状及面积均相同。
可选的，所述子像素由红色子像素、绿色子像素和蓝色子像素构成。
可选的，所述像素单元组中的各个子像素的形状及面积均相同。
可选的，在所述像素单元组中，红色子像素的面积与绿色子像素的面积相同，蓝色子像素的面积大于红色子像素的面积。
可选的，所述第一方向为行方向，所述第二方向为列方向，或者所述第一方向为列方向，所述第二方向为行方向。
此外，为实现上述目的，本申请第二方面提供一种OLED显示面板，所述OLED显示面板包括第一方面所述的任一像素结构。
本申请实施例提供的像素结构及OLED显示面板，通过如下特征可以实现真正意义上的全色显示，排列紧凑且减少了像素间距，同时提高了PPI：沿第一方向相邻设置且分别包含三个不同颜色的子像素的第一像素单元和第二像素单元，沿所述第二方向依次排列的子像素，第二像素单元中第三子像素沿着第一方向延伸的中心线与第一像素单元中第一子像素和第二子像素之间 的边界线重合，分别属于第一像素单元和第二像素单元的相同颜色的两个子像素在第一方向上的距离和在第二方向上的距离相等；通过共用相邻子像素的方式，一个像素单元可表现出两个像素的显示效果，进而提高屏幕显示分辨率和制作良率，降低蒸镀掩膜制作工艺和蒸镀工艺的难度。
附图说明
图1为现有技术中一种OLED显示面板的像素排布示意图；
图2为对应图1的一种FMM的示意图；
图3为现有技术中另一种OLED显示面板的像素排布示意图；
图4为本申请实施例的像素结构示意图；
图5为本申请实施例的像素结构中一个像素单元组的结构示意图；
图6-图7为本申请实施例的像素结构中具有不同像素开口长宽比的像素单元组的结构示意图；
图8为本申请实施例的像素结构的显示示意图；
图9a-图9b为本申请实施例的另一像素结构示意图。
具体实施方式
以下将参照附图更详细地描述本申请。在各个附图中，相同的元件采用类似的附图标记来表示。为了清楚起见，附图中的各个部分没有按比例绘制。此外，在图中可能未示出某些公知的部分。
第一实施例
以下结合图4-图6对本实施例进行说明，其中，第一方向为X方向(也可以称之为行方向或横向)，第二方向为Y方向(可称之为列方向或纵向)，第一方向垂直于第二方向。为了简便，附图中只表示出了像素结构的一部分，实际产品中像素单元的数量不限于此，像素单元的数量可依据实际显示需要作相应的变化。本申请中所述第一行、第二行、第一列、第二列等均是为说明本申请而以图中所示为参考标准的，并非指实际产品中的行和列。
需要说明的是，本实施例中的第一方向和第二方向可以不垂直，为了叙 述方便，以下以第一方向和第二方向垂直的情形进行说明。
如图4和图5所示，本申请第一实施例提供的像素结构包括多个像素单元组，每个像素单元组包括在第一方向相邻且在第二方向上错位设置且分别包含三个不同颜色的子像素的第一像素单元30和第二像素单元31。所述第二像素单元31中的第一个子像素(位于最靠上位置的那个子像素)沿着第一方向延伸的中心线与所述第一像素单元30中的第一个子像素和第二个子像素(位于中间位置的那个子像素)之间的边界线重合；
请参考图9a和图9b所示，在另一种实施方式中，所述第一像素单元30中的第一个子像素沿着第一方向延伸的中心线与所述第二像素单元31中的第一个子像素和第二个子像素之间的边界线重合。
所述第一像素单元30包括沿第二方向依次排列的第一子像素301、第二子像素303和第三子像素305；所述第二像素单元31包括沿第二方向依次排列的第三子像素311、第一子像素313和第二子像素315。
需要说明的是，在本实施例中，所述第一像素单元30和所述第二像素单元31中的子像素排布结构不限于图4-图8的情形。子像素排布可包括各种不同的排列组合，例如图9a图9b就是与图4不同的一种情形。为了叙述方便，以下以图4-图8的子像素排布结构进行说明。
在本实施例中，各个子像素的形状可以为矩形或者长方形，本实施例对此不作限制。
在本实施例中，第一像素单元30或第二像素单元31中的第一子像素、第二子像素和第三子像素由红色(R)子像素、绿色(G)子像素和蓝色(B)子像素构成。即在本申请实施例中，第一子像素为红色(R)子像素、绿色(G)子像素和蓝色(B)子像素中之一，第二子像素为红色(R)子像素、绿色(G)子像素和蓝色(B)子像素中之一，第三子像素为红色(R)子像素、绿色(G)子像素和蓝色(B)子像素中之一，且第一子像素、第二子像素和第三子像素的颜色彼此不同。
以图5为例，第一像素单元30中的第一子像素301为红色(R)子像素，第二子像素303为绿色(G)子像素，第三子像素305为蓝色(B)子像素； 因此，第一子像素301包括红色(R)发光区302以及红色(R)非发光区(图中未标号)，并且包括用于发射红光的有机发射层；第二子像素303包括绿色(G)发光区304以及绿色(G)非发光区(图中未标号)，并且包括用于发射绿光的有机发射层；第三子像素305包括蓝色(B)发光区306以及蓝色(B)非发光区(图中未标号)，并且包括用于发射蓝光的有机发射层。第二像素单元31中的第一子像素313为红色(R)子像素，第二子像素315为绿色(G)子像素，第三子像素311为蓝色(B)子像素；因此，第一子像素313包括红色(R)发光区314以及红色(R)非发光区(图中未标号)，并且包括用于发射红光的有机发射层；第二子像素315包括绿色(G)发光区316以及绿色(G)非发光区(图中未标号)，并且包括用于发射绿光的有机发射层；第三子像素311包括蓝色(B)发光区312以及蓝色(B)非发光区(图中未标号)，并且包括用于发射蓝光的有机发射层。
所述第二像素单元31中第三子像素311沿着第一方向延伸的中心线(图4和图5中的A所示)与所述第一像素单元30中第一子像素301和第二子像素303之间的边界线重合；
需要说明的是，由于第一像素单元30内的第一子像素301和第二子像素302共用一条边，该共用的边即为第一子像素301和第二子像素302之间的边界线，但应理解，此处的“边界”或“边界线”并不限定为实体的“边界”或“边界线”，而可以是指两个像素子像素之间虚拟的“边界”或“边界线”。
分别属于所述第一像素单元30和所述第二像素单元31的相同颜色的两个子像素在第一方向上的距离和在第二方向上的距离相等。即，所述像素单元组中相同颜色的两个子像素在第一方向上的距离和在第二方向上的距离相等。
以图6为例，第一列的R子像素与第二列的R子像素，在行方向上的距离为x，在列方向上的距离为y，x等于y；第一列的G子像素与第二列的G子像素，在行方向上的距离为x，在列方向上的距离为y，x等于y；B子像素与上类似(图中未示出)，在此不作赘述。通过此种像素排布，可使得像素 单元更紧凑的排列，减少了像素间距，提高了PPI。
本实施例的每个像素单元由RGB三色子像素构成，可以实现真正意义上的全色显示；另一方面可以同时应用于分辨率在第一方向和第二方向上相同或不同的显示面板中，相邻像素单元通过共用子像素的方式，一个像素单元可表现出两个像素的显示效果，进而提高屏幕的虚拟显示分辨率。以原始分辨率n为例，此像素排布通过第一方向共用，可提高一倍的分辨率，变为2n；共用的方式可参考图4中的虚线三角形。例如，在图4中，第三列的R子像素和G子像素被与其相邻的第二列和第四列的B子像素共用，第三列的B子像素被与其相邻的第二列和第四列的R子像素和G子像素共用。
在一种实施方式中，分别属于所述第一像素单元30和所述第二像素单元31的相同颜色的两个子像素的各自的开口长宽比的取值范围为1～1.5。
请参考图6和图7，R子像素的开口长宽比为d：z，其中d：z的取值范围为1～1.5，G子像素和B子像素与此类似，在此不作赘述。子像素的开口长宽比为1.5时可满足的设计余量较大，而且通过调节长宽比例还可以调整同颜色的子像素之间的bridge(连接桥)(如图6中的b和图7中的b1所示)，增加bridge(连接桥)的值可提高机械稳定性，降低精密金属掩模制作工艺和蒸镀工艺的难度，提高制作良率。以图6和图7为例，图7中的bridge(连接桥)的值b1大于图6中的bridge(连接桥)的值b，因此相对于图6，图7的机械稳定性较高、精密金属掩模制作工艺和蒸镀工艺的难度较低、制作良率较高。
在一种实施方式中，在所述第二方向上相邻两个子像素的中心之间的距离相等。该实施方式可使得像素单元进一步地紧凑的排列，减少了像素间距，提高了PPI。
在一种实施方式中，分别属于所述第一像素单元30和所述第二像素单元31的相同颜色两个的子像素的形状及面积均相同。相同颜色的子像素的形状及面积均相同，可以更进一步降低金属掩模制作工艺和蒸镀工艺的难度。进一步地，所述像素单元组中各个子像素的形状及面积也可保持相同。
由于B子像素的发光效率通常是最低的，在另一种实施方式中，所述像素单元组中，红色子像素的面积与绿色子像素的面积可以相同，蓝色子像素 的面积可以大于红色子像素的面积。
第二实施例
本申请第二实施例提供一种OLED显示面板，所述OLED显示面板包括第一实施例所述的像素结构。
像素结构可参考第一实施例，在此不作赘述。
为了进一步地阐述本实施例，以下结合图8对OLED显示面板中像素结构的显示方案进行说明：
如图8所示，在行方向上，真实像素的长宽比可以为2：1，每列子像素对应显示一列像素，在驱动显示时可采取以下两种方式：
第一种驱动显示方式，使对应图像RGB的子像素中的位于虚线框内的部分不显示；
第二种驱动显示方式，使对应图像RGB的子像素中的位于虚线框内的部分进行小比例(如30％)亮度显示，使对应图像RGB的子像素中的不位于虚线框内的部分进行大比例(如70％)亮度显示，这样既可保证在横向上相邻的列的亮度差异，也可使单点的显示不过于失真，当然亮度显示比例也可以对半划分(即子像素中的位于虚线框内的部分进行50％亮度显示，不位于虚线框内的部分也进行50％亮度显示)，这样相邻两列亮度相同，进而会模糊显示细节，可适用高PPI显示。
依照本申请的实施例如上文所述，这些实施例并没有详尽叙述所有的细节，也不限制该申请仅为所述的具体实施例。显然，根据以上描述，可作很多的修改和变化。本说明书选取并具体描述这些实施例，是为了更好地解释本申请的原理和实际应用，从而使所属技术领域技术人员能很好地利用本申请以及在本申请基础上的修改使用。本申请仅受权利要求书及其全部范围和等效物的限制。

Claims (11)

  1. 一种像素结构，其中，所述像素结构包括多个像素单元组，每个像素单元组包括在第一方向上相邻且在与所述第一方向垂直的第二方向上错位设置的第一像素单元和第二像素单元，
    所述第一像素单元和所述第二像素单元分别包括沿所述第二方向设置的三个不同颜色的子像素，分别属于所述第一像素单元和所述第二像素单元的相同颜色的两个子像素在所述第一方向上的距离和在所述第二方向上的距离相等。
  2. 根据权利要求1所述的像素结构，其中，所述第二像素单元中的第一个子像素沿着所述第一方向延伸的中心线与所述第一像素单元中的第一个子像素和第二个子像素之间的边界线重合，或
    所述第一像素单元中的第一个子像素沿着所述第一方向延伸的中心线与所述第二像素单元中的第一个子像素和第二个子像素之间的边界线重合。
  3. 根据权利要求1所述的像素结构，其中，所述第一像素单元包括沿所述第二方向依次排列的第一子像素、第二子像素和第三子像素，
    所述第二像素单元包括沿所述第二方向依次排列的第三子像素、第一子像素和第二子像素。
  4. 根据权利要求1所述的像素结构，其中，各所述子像素的开口长宽比的取值范围为1～1.5。
  5. 根据权利要求1所述的像素结构，其中，在所述第二方向上，相邻的两个子像素的中心之间的距离彼此相等。
  6. 根据权利要求1所述的像素结构，其中，所述第一像素单元和所述第二像素单元中的相同颜色的子像素的形状及面积均相同。
  7. 根据权利要求1-6中任一项所述的像素结构，其中，所述子像素由红 色子像素、绿色子像素和蓝色子像素构成。
  8. 根据权利要求7所述的像素结构，其特征在于，所述像素单元组中的各个子像素的形状及面积均相同。
  9. 根据权利要求7所述的像素结构，其中，在所述像素单元组中，红色子像素的面积与绿色子像素的面积相同，蓝色子像素的面积大于红色子像素的面积。
  10. 根据权利要求1至9中任一项所述的像素结构，其中，所述第一方向为行方向，所述第二方向为列方向，或者
    所述第一方向为列方向，所述第二方向为行方向。
  11. 一种OLED显示面板，其中，所述OLED显示面板包括权利要求1至10中任一项所述的像素结构。
PCT/CN2018/090495 2017-08-31 2018-06-08 一种像素结构及oled显示面板 WO2019041958A1 (zh)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US16/323,353 US11302750B2 (en) 2017-08-31 2018-06-08 Pixel structure and OLED display panel
EP18851242.0A EP3678184A4 (en) 2017-08-31 2018-06-08 PIXEL STRUCTURE AND DELO DISPLAY PANEL
KR1020197032735A KR20190131580A (ko) 2017-08-31 2018-06-08 픽셀 구조체 및 oled 디스플레이 패널
JP2019563355A JP7005657B2 (ja) 2017-08-31 2018-06-08 画素構造及びｏｌｅｄ表示パネル

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201721111056.X 2017-08-31
CN201721111056.XU CN207425858U (zh) 2017-08-31 2017-08-31 一种像素结构及oled显示面板

Publications (1)

Publication Number Publication Date
WO2019041958A1 true WO2019041958A1 (zh) 2019-03-07

Family

ID=62315343

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2018/090495 WO2019041958A1 (zh) 2017-08-31 2018-06-08 一种像素结构及oled显示面板

Country Status (6)

Country Link
US (1) US11302750B2 (zh)
EP (1) EP3678184A4 (zh)
JP (1) JP7005657B2 (zh)
KR (1) KR20190131580A (zh)
CN (1) CN207425858U (zh)
WO (1) WO2019041958A1 (zh)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN207425858U (zh) 2017-08-31 2018-05-29 昆山国显光电有限公司 一种像素结构及oled显示面板
CN108807475B (zh) * 2018-05-31 2020-09-25 昆山国显光电有限公司 像素排布结构及oled显示面板
CN110767106B (zh) 2018-09-30 2020-09-08 云谷（固安）科技有限公司 显示面板、显示屏及显示终端
KR20200106589A (ko) 2019-03-04 2020-09-15 삼성디스플레이 주식회사 표시 장치, 표시 장치의 제조장치 및 표시 장치의 제조방법
CN110085654B (zh) * 2019-05-29 2021-04-30 昆山国显光电有限公司 像素结构及具有该像素结构的显示面板、显示装置
US11557635B2 (en) * 2019-12-10 2023-01-17 Samsung Display Co., Ltd. Display device, mask assembly, and apparatus for manufacturing the display device
US20220238611A1 (en) * 2021-01-28 2022-07-28 Innolux Corporation Light emitting device

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060103940A1 (en) * 2004-11-12 2006-05-18 Wintek Corportation Method for configuring luminous zones and circuit zones of pixels of the display
CN103123927A (zh) * 2013-01-24 2013-05-29 昆山维信诺显示技术有限公司 用于oled显示屏的像素结构及其金属掩膜板
CN104319283A (zh) * 2014-10-27 2015-01-28 京东方科技集团股份有限公司 一种有机电致发光显示器件、其驱动方法及显示装置
CN104680948A (zh) * 2015-03-31 2015-06-03 京东方科技集团股份有限公司 一种像素结构、其驱动方法及显示装置
CN207425858U (zh) * 2017-08-31 2018-05-29 昆山国显光电有限公司 一种像素结构及oled显示面板

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003084125A (ja) 2001-07-04 2003-03-19 Seiko Epson Corp カラーフィルタの製造方法及び製造装置、液晶表示装置の製造方法及び製造装置、ｅｌ発光層配設基板の製造方法及び製造装置、ｅｌ発光装置の製造方法及び製造装置、成膜方法及び成膜装置、電気光学装置及びその製造方法並びに電子機器
KR100626284B1 (ko) 2003-11-19 2006-09-21 엘지.필립스 엘시디 주식회사 유기 전계발광소자 및 그 제조방법
KR100748310B1 (ko) 2006-02-20 2007-08-09 삼성에스디아이 주식회사 유기전계발광표시장치 및 그의 제조방법
JP5189276B2 (ja) * 2006-11-29 2013-04-24 エルジー ディスプレイ カンパニー リミテッド 画像表示装置
TWI559524B (zh) * 2013-01-15 2016-11-21 友達光電股份有限公司 電激發光顯示面板之畫素結構
CN106486513B (zh) * 2015-08-31 2023-09-29 昆山国显光电有限公司 像素结构以及oled显示面板

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060103940A1 (en) * 2004-11-12 2006-05-18 Wintek Corportation Method for configuring luminous zones and circuit zones of pixels of the display
CN103123927A (zh) * 2013-01-24 2013-05-29 昆山维信诺显示技术有限公司 用于oled显示屏的像素结构及其金属掩膜板
CN104319283A (zh) * 2014-10-27 2015-01-28 京东方科技集团股份有限公司 一种有机电致发光显示器件、其驱动方法及显示装置
CN104680948A (zh) * 2015-03-31 2015-06-03 京东方科技集团股份有限公司 一种像素结构、其驱动方法及显示装置
CN207425858U (zh) * 2017-08-31 2018-05-29 昆山国显光电有限公司 一种像素结构及oled显示面板

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP3678184A4 *

Also Published As

Publication number Publication date
US20210359029A1 (en) 2021-11-18
CN207425858U (zh) 2018-05-29
EP3678184A4 (en) 2020-09-02
JP7005657B2 (ja) 2022-01-21
KR20190131580A (ko) 2019-11-26
JP2020519965A (ja) 2020-07-02
US11302750B2 (en) 2022-04-12
EP3678184A1 (en) 2020-07-08

Similar Documents

Publication Publication Date Title
US10692940B2 (en) Pixel structure and display panel having the same
US11561465B2 (en) Pixel arrangement structure, organic light emitting device, display device and mask
WO2019041958A1 (zh) 一种像素结构及oled显示面板
CN108010934B (zh) 像素结构及其形成方法、oled显示面板以及蒸镀掩膜版
US10700136B2 (en) Pixel structure and organic light emitting display using the pixel structure
WO2016184030A1 (zh) 像素排列结构、有机电致发光器件、显示装置、掩模板
WO2019041938A1 (zh) 像素结构、oled 显示屏以及蒸镀掩膜版
CN106653799B (zh) 像素结构以及包含所述像素结构的oled显示面板
CN108091667B (zh) 像素结构及包含所述像素结构的oled显示面板
CN206322697U (zh) 像素结构及包含所述像素结构的oled显示面板
TWI506774B (zh) 畫素結構及其金屬光罩
WO2018196496A1 (zh) 像素结构驱动方法
TWI663592B (zh) 像素結構、掩膜板及顯示裝置
WO2017118003A1 (zh) Oled像素阵列、制备oled像素阵列的方法、oled显示面板和显示装置
CN109326630B (zh) 显示基板、显示装置及掩模板
WO2019227926A1 (zh) 像素排列结构、显示面板及掩膜版组件
CN104659064A (zh) 有机发光二极管显示器像素排列结构及显示装置
CN110120406A (zh) 一种发光器件及其制作方法、和显示面板
CN113130609A (zh) 显示面板、显示装置和掩模板
CN210052744U (zh) 像素排列结构、彩膜结构及显示面板
US10937836B2 (en) Pixel arrangement structure and display device
CN110634910A (zh) 一种显示基板、显示面板及显示装置
TWM572073U (zh) Pixel structure and OLED display panel
CN112349749B (zh) 像素排列结构、发光器件及显示面板

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 18851242

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 20197032735

Country of ref document: KR

Kind code of ref document: A

ENP Entry into the national phase

Ref document number: 2019563355

Country of ref document: JP

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

ENP Entry into the national phase

Ref document number: 2018851242

Country of ref document: EP

Effective date: 20200331