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WO2019062236A1 - 显示屏、显示屏驱动方法及其显示装置 - Google Patents

显示屏、显示屏驱动方法及其显示装置 Download PDF

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Publication number
WO2019062236A1
WO2019062236A1 PCT/CN2018/093476 CN2018093476W WO2019062236A1 WO 2019062236 A1 WO2019062236 A1 WO 2019062236A1 CN 2018093476 W CN2018093476 W CN 2018093476W WO 2019062236 A1 WO2019062236 A1 WO 2019062236A1
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WIPO (PCT)
Prior art keywords
pixel
sub
area
pixels
display screen
Prior art date
Application number
PCT/CN2018/093476
Other languages
English (en)
French (fr)
Inventor
刘明星
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
Priority claimed from CN201810135316.XA external-priority patent/CN108364967B/zh
Priority claimed from CN201810135319.3A external-priority patent/CN108257514A/zh
Priority claimed from CN201810135642.0A external-priority patent/CN108461521A/zh
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
Publication of WO2019062236A1 publication Critical patent/WO2019062236A1/zh
Priority to US16/666,376 priority Critical patent/US11152433B2/en

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    • 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
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/302—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements characterised by the form or geometrical disposition of the individual elements
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
    • 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
    • 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
    • H10K59/121—Active-matrix OLED [AMOLED] displays characterised by the geometry or disposition of pixel elements
    • 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
    • H10K59/352—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels the areas of the RGB subpixels being different
    • 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
    • H10K59/60—OLEDs integrated with inorganic light-sensitive elements, e.g. with inorganic solar cells or inorganic photodiodes
    • 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
    • H10K59/60—OLEDs integrated with inorganic light-sensitive elements, e.g. with inorganic solar cells or inorganic photodiodes
    • H10K59/65—OLEDs integrated with inorganic image sensors
    • 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
    • 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

Definitions

  • the present application relates to the field of display, and in particular, to a display screen, a display screen driving method, and a display device.
  • the display screen includes an effective display area and a non-display area above the effective display area.
  • the effective display area can be used to display the human-machine interface and to operate the applications provided by the human-machine interface. For example, a video played by the smartphone's video playback application is displayed in the active display area.
  • the presence of non-display areas results in poor user experience.
  • a display screen includes a first area and a second area, the physical pixel density in the first area being less than the physical pixel density in the second area.
  • the light emitting unit in the first region is different from the light emitting unit in the second region;
  • the light emitting unit in the first region includes: a first sub-pixel, a second sub-pixel, and a third sub-pixel; the number of at least one of the first sub-pixel, the second sub-pixel, and the third sub-pixel and the other two The number of sub-pixels is different.
  • the number of light emitting units in the first region is one or more; and the number of light emitting units in the second region is one or more.
  • the first region distributes a first type of light emitting unit; the first type of light emitting cells are distributed in a shape of a pair of triangular sides that are co-edge.
  • the first sub-pixel is a red sub-pixel and the number is one
  • the second sub-pixel is a green sub-pixel and the number is two
  • the third sub-pixel is a blue sub-pixel.
  • a pixel and the number is one
  • the one red sub-pixel and the one blue sub-pixel are respectively located at the vertices of the pair of triangular common sides
  • the two green sub-pixels are respectively located at the remaining vertices of the pair of triangles
  • the sub-pixels are disposed in the first region, and in the horizontal direction, the red sub-pixels, the green sub-pixels, and the blue sub-pixels are each arranged in a row and the colors of adjacent rows are different; in the vertical direction, the green sub-pixels are arranged.
  • the first region distributes a second type of light emitting unit; and the second type of light emitting cells are distributed in a shape of a pair of triangles of a common vertex.
  • the first sub-pixel is a red sub-pixel and the number is one
  • the second sub-pixel is a green sub-pixel and the number is two
  • the third sub-pixel is a blue sub-pixel. a pixel and a number of two
  • the one red sub-pixel is located at a common vertex of the pair of triangles
  • the two green sub-pixels and the two blue sub-pixels are respectively located at the remaining vertices of the pair of triangles, such that Each vertex of each triangle presents a different sub-pixel
  • the sub-pixels are arranged in the first area.
  • the blue sub-pixels are arranged in a plurality of rows, each row has two rows, and a row of red sub-pixel rows and a row of green are distributed between them.
  • Sub-pixel; the distance between adjacent row groups is greater than the distance between the red sub-pixel row and the row of green sub-pixels; in the vertical direction, arranged in multiple identical column groups, in each column group, the first column In the form of GBGB, the second column is in the form of BRBR, and the third column is a pure green sub-pixel; the distance between adjacent column groups is greater than the distance between pixel columns in the column group.
  • the second region-distributed light emitting unit includes a red sub-pixel, a green sub-pixel, and a blue sub-pixel.
  • a display screen including: a first area and a second area; a pixel unit density of the first area is lower than a pixel unit density of the second area.
  • the minimum repeating unit of the first area comprises one pixel unit, a first blank area, and the number of pixel units carried by the first blank area is one.
  • the minimum repeating unit of the first region comprises: two pixel units and one second blank area, and the second blank area carries two pixel units.
  • the smallest repeating units of adjacent two or two columns are misaligned.
  • the pixel unit of the first region includes: two red sub-pixels, two green sub-pixels, and two blue sub-pixels;; as a whole, the sub-pixel arrangement in the first region In the vertical direction, arranged in a plurality of identical column groups, in each column group, the first column is a repeated form of the BRG unit, the second column is a repeated form of the RGB unit, and the adjacent BRG unit in the first column
  • the longitudinal distance between the longitudinal distances is greater than the longitudinal distance between the sub-pixels in the BRG unit
  • the longitudinal distance between adjacent RGB units in the second column is greater than the longitudinal distance between the sub-pixels in the RGB unit
  • the distance between adjacent column groups is greater than the column group The distance between the columns of pixels;
  • the pixel unit of the second region includes a red sub-pixel, a green sub-pixel, and a blue sub-pixel.
  • a driving method of a display screen including:
  • the driving signal is used to drive the corresponding sub-pixel of the second region.
  • the drive signal is modified in an arithmetic mean or weighted average.
  • a display device including:
  • the display screen includes a first area and a second area, the physical density of the first area being lower than the physical pixel density of the second area;
  • a light-sensitive module is placed under the screen, and the under-screen photosensitive module can sense the light that is incident through the first area of the display screen.
  • the under-the-screen photosensitive module includes at least one of a photosensor, and a front camera.
  • the under-the-screen photosensitive module is embedded 4 mm-6 mm below the display screen.
  • the light can be transparently separated from the pixel gap of the first area of the underlying photosensitive module for placing a camera or the like.
  • the non-display area above the display area enlarges the screen ratio and optimizes the use feeling, thereby solving the technical problem that the presence of the non-display area causes the user to feel poorly.
  • the light can be transparently separated from the pixel gap of the first area of the underlying photosensitive module for placing a camera or the like.
  • the non-display area above the display area enlarges the screen ratio and optimizes the use feeling, thereby solving the technical problem that the presence of the non-display area causes the user to feel poorly.
  • FIG. 1 is a schematic structural view of a display screen provided by the present application.
  • 2A is a partial structural schematic view of a display screen provided by the present application.
  • 2B is a schematic partial structural diagram of a display screen provided by the present application.
  • FIG. 3 is a schematic structural view of a first type of light emitting unit in a first region of the display screen provided in FIGS. 2A and 2B;
  • FIG. 4A is a partial structural schematic view of another display screen provided by the present application.
  • 4B is a partial structural schematic view of another display screen provided by the present application.
  • FIGS. 4A and 4B are a partial enlarged views of the first region 100 of the display screen illustrated in FIGS. 4A and 4B;
  • FIG. 5 is a schematic structural view of a first type of light emitting unit in a first region of the display screen provided in FIGS. 4A, 4B, and 4C;
  • FIG. 6A is a schematic diagram of a first seed pixel arrangement structure of a display screen according to an embodiment of the present disclosure
  • 6B is a schematic diagram of a first seed pixel arrangement structure of a display screen according to an embodiment of the present disclosure
  • 6C is a schematic diagram of a first seed pixel arrangement structure of a display screen according to an embodiment of the present disclosure
  • FIG. 7A is a schematic diagram of a second seed pixel arrangement structure of a display screen according to an embodiment of the present disclosure.
  • FIG. 7B is a schematic structural diagram of a second seed pixel arrangement of a display screen according to an embodiment of the present disclosure.
  • FIG. 8A is a schematic diagram of a third seed pixel arrangement structure of a display screen according to an embodiment of the present disclosure.
  • FIG. 8B is a schematic diagram of a third seed pixel arrangement structure of a display screen according to an embodiment of the present disclosure.
  • FIG. 9 is a schematic flowchart diagram of a driving method of a display screen according to an embodiment of the present application.
  • FIG. 10 is a schematic structural diagram of a display device provided by the present application.
  • FIG. 11 is a schematic diagram of a layered structure of an organic light emitting display device according to an embodiment of the present application.
  • 100 a first area; 200, a second area; 30, a display screen; 31, a light-sensitive module under the screen; 101, a first type of light-emitting unit; 102, a second type of light-emitting unit; 110, a minimum repeating unit; 112, the first blank area; 113, the second blank area.
  • a display screen as shown in FIG. 1, includes a first region 100 and a second region 200, the physical pixel density in the first region 100 being less than the physical pixel density in the second region 200.
  • the first area 100 is typically used to set the under-screen photosensitive module in a particular application. For example, a camera for photographing, a photoelectric sensor for sensing whether a face is close to a display screen.
  • the second area 200 can be used to display an image or implement a touch function in a specific application.
  • the second region 200 is primarily functionally embodied as a primary display region having a relatively high physical pixel density relative to the first region 100.
  • the physical pixel density refers to the number of physical pixels actually prepared per unit area, rather than the number of pixels participating in the display per unit area.
  • the first region 100 is primarily functionally embodied as a secondary display region having a relatively low physical pixel density relative to the second region 200.
  • the first area 100 is also functionally arranged to allow light to pass through the display screen to enter the interior to meet the illumination intensity requirements or sensitivity requirements of the under-screen photosensitive module. Therefore, in the present embodiment, the physical pixel density in the first region 100 is smaller than the physical pixel density in the second region 200 so that light enters the interior through the display screen.
  • the embodiment provided by the present application has at least the following effects: since the first region 100 has a relatively low physical pixel density, an under-screen photosensitive module such as a camera can be disposed under the first region 100, so that the light can be transmitted from the sub-pixel. The gap is penetrated to achieve higher light transmittance while achieving full screen or full screen display.
  • a specific implementation method in some embodiments may be: using a PDL layer to define an opening to deposit a sub-pixel, and then using an evaporation process to vapor-deposit sub-pixels defined by the PDL layer, the sub-pixel formed by evaporation is a solid pixel, thereby The sub-pixel density of the first region 100 is made lower than the sub-pixel density of the second region 200. Therefore, the above physical pixel density can also be referred to as sub-pixel density.
  • the second area 200 acts as the primary display area of the display screen and occupies most of the area of the display screen.
  • the first area 100 serves as a secondary display area of the display screen and is distributed on the upper side of the display screen.
  • the first area 100 and the second area 200 together form the entire display area of the display screen.
  • the first region 100 and the second region 200 are located opposite each other at the display screen. That is, the display screen includes oppositely disposed first ends and second ends, wherein the first area 100 is disposed at a first end of the display screen and the second area 200 is disposed at a second end of the display screen.
  • the first region 100 and the second region 200 are disposed along the length direction of the terminal.
  • the first region 100 and the second region 200 may also be disposed along the width direction of the terminal. It should be noted that the positional relationship between the first area 100 and the second area 200 herein can be adjusted according to actual conditions.
  • the first region 100 may be located on the left side, the right side, or the lower side of the second region 200.
  • the first area 100 is distributed around the second area 200, and the second area 200 is surrounded by the middle of the display screen. As long as there are two opposing areas in the display that have different requirements for light intensity, it should be understood that the scope of the substantial protection of the present application is not deviated.
  • the first region 100 and the second region 200 are formed on the display screen of the mobile phone by controlling the physical pixel density.
  • Both the first area 100 and the second area 200 can be used to display an image, that is, the entire display screen can be displayed when the entire display screen is viewed with the naked eye, that is, a so-called full screen is realized. Since the position of the photosensitive module is not required for the camera, the non-display area above the effective display area can be omitted, the screen ratio can be enlarged, and the use feeling can be optimized, so that the presence of the non-display area can be solved, and the user feels not used. Good technical issues. Moreover, since the physical pixel density of the first region 100 is relatively low, the illumination intensity requirement of the under-screen photosensitive module such as the camera of the mobile phone can be satisfied.
  • the lighting unit in the first region is different from the lighting unit in the second region.
  • the light emitting unit in the first region may be composed of a first sub-pixel, a second sub-pixel, and a third sub-pixel having different emission colors; at least one of the first sub-pixel, the second sub-pixel, and the third sub-pixel The number is different from the number of the other two sub-pixels.
  • the first sub-pixel, the second sub-pixel, and the third sub-pixel are a red sub-pixel (R), a green sub-pixel (G), and a blue sub-pixel (B), respectively.
  • the light emitting unit distributed by the first region 100 includes: a red sub-pixel, a green sub-pixel, and a blue sub-pixel; the number of at least one of the red sub-pixel, the green sub-pixel, and the blue sub-pixel and the other two
  • the number of sub-pixels is different.
  • no change can be made on the basis of the main display area of the conventional display screen, that is, the second area 200 is not changed, and the sub-pixels of the auxiliary display area of the traditional display screen are modified. That is, the sub-pixel of the first area 100 is modified.
  • the light emitting unit in the first region 100 is made different from the light emitting unit in the second region 200, so that light can penetrate from the sub-pixel gap of the first region to achieve higher light transmittance, and full screen is realized.
  • full-screen display does not affect the work of the photosensitive module under the screen.
  • the number of the light emitting units disposed in the first region 100 is one or more, and the number of the light emitting units disposed in the second region 200 is also one or more.
  • AMOLED Active Matrix Organic Light Emitting Diode
  • OLED organic light emitting diode
  • the illumination unit disposed in the first region 100 and the illumination unit disposed in the second region 200 may be used to control the illumination using the same driving algorithm, or may be disposed on the first region 100 and the second illumination unit.
  • the lighting units arranged in the area 200 control the illumination using different driving algorithms.
  • the display portion of the conventional mobile phone display screen may not be changed, and the position of the photosensitive module such as the front camera of the conventional mobile phone display screen is arranged.
  • the light emitting unit of the first region 100 The advantage of this is that, because the front-panel camera and the like, the photosensitive module needs a certain light intensity or a light-sensing quantity to achieve a good shooting effect.
  • the light-emitting unit of the first region 100 is disposed at a position corresponding to the position where the front camera is disposed, by sharing the red sub-pixel, the green sub-pixel, and the blue sub- At least one of the pixels provides a gap for transmitting light while achieving white balance, thereby meeting the requirements of the light intensity or the amount of light of the photosensitive module such as the camera.
  • the first region 100 may be disposed with a first type of light emitting unit 101 (or a minimum repeating unit).
  • the first type of light emitting unit 101 can include: a first sub-pixel, two second sub-pixels, and a third sub-pixel.
  • the first sub-pixel, the second sub-pixel, and the third sub-pixel are respectively a red sub-pixel (R), a green sub-pixel (G), and a blue sub-pixel (B).
  • the first type of light emitting unit 101 is in the shape of a pair of triangles of a common side (as shown in FIG. 3), and the first sub-pixel, the second sub-pixel, and the third sub-pixel are respectively red sub-pixels ( R), the green sub-pixel (G), and the blue sub-pixel (B) are exemplified, that is, a line connecting one red sub-pixel (R) and one blue sub-pixel (B) forms a common side of a co-triangular triangle. Two green sub-pixels (G) are respectively located at the remaining vertices of the pair of triangles.
  • the sub-pixels disposed in the first region 100, in the lateral direction, the red sub-pixels, the green sub-pixels, and the blue sub-pixels are each arranged in a row and the colors of adjacent rows are different; in the vertical direction, the green sub-pixels Arranged into a plurality of column groups, each column group consists of two columns, and red sub-pixels and blue sub-pixels are arranged in an inter-phase manner between each column group, and the column groups are directly adjacent to each other, in other words, phase There are no red and blue subpixels between adjacent groups.
  • the organic light emitting diode OLED relies on the luminescent material to emit light.
  • the decay rates of luminescent materials of different colors are different.
  • red luminescent materials have the slowest decay rate of the three colors and have the longest luminescence lifetime.
  • green light is the most sensitive color of the human eye in red, green, and blue. Therefore, reducing the number of green sub-pixels can be easily perceived by the human eye. Therefore, the present application uses the red sub-pixel and the blue sub-pixel as common pixels to avoid affecting the human visual perception after the pixels are shared, and balance the illumination life of each color sub-pixel.
  • the first sub-pixel, the second sub-pixel, and the third sub-pixel are respectively a red sub-pixel (R), a green sub-pixel (G), and a blue sub-pixel (B).
  • the sub-pixel arrangement manner disposed in the second region 200 may be: the first column of pixels is a GRB mode, the second column of pixels is an RBG mode, and the blue sub-pixel B is adjacent to the red sub-pixel R and the green sub-pixel. G is shared.
  • red sub-pixel green sub-pixel and blue sub-pixel are used.
  • the red sub-pixel, the green sub-pixel and the blue sub-pixel can also be sub-pixels of other colors.
  • a second type of light emitting unit 102 can be disposed in the first region 100.
  • 4C is a partially enlarged schematic view of the first region 100, showing the arrangement of the second type of light emitting cells 102 in the first region 100 as a whole.
  • the second type of light emitting units 102 are distributed in a shape of a pair of triangles having a common apex.
  • the first sub-pixel, the second sub-pixel, and the third sub-pixel are respectively a red sub-pixel (R), a green sub-pixel (G), and a blue sub-pixel (B), as shown in FIG. 4A, FIG. 4B, and FIG. 4C.
  • the second type of light emitting unit 102 includes a red sub-pixel, two green sub-pixels, and two blue sub-pixels.
  • the one red sub-pixel is located at a common vertex of a pair of triangles, and two green sub-pixels.
  • the pixel and the two blue sub-pixels are respectively located at the remaining vertices of the pair of triangles such that each vertex of each triangle presents a different sub-pixel.
  • the sub-pixels disposed in the first region 100 are arranged in a horizontal direction, the blue sub-pixels are arranged in a plurality of rows, each row group has two rows, and a row of red sub-pixel rows and a row are distributed therebetween.
  • a distance between adjacent row groups is greater than a distance between a red sub-pixel row and a row of green sub-pixels; in the vertical direction, arranged in a plurality of identical column groups, in each column group, first Listed as GBGB (green sub-pixels alternate with blue sub-pixels), the second column is BRBR (blue sub-pixels alternate with red sub-pixels), the third column is pure green sub-pixels; between adjacent column groups The distance is greater than the distance between the columns of pixels in the column group. Only the red sub-pixels are used as common pixels, and the light-emitting lifetime of each color sub-pixel can be balanced while reducing the pixel density.
  • the first sub-pixel, the second sub-pixel, and the third sub-pixel are respectively a red sub-pixel (R), a green sub-pixel (G), and a blue sub-pixel (B).
  • the sub-pixel arrangement in the second region 200 may be: the first column of pixels is in the GRB mode, the second column of pixels is in the RBG mode, and the blue sub-pixel B is adjacent to the red sub-pixel R and the green sub-pixel.
  • the pixel G is shared.
  • red sub-pixel green sub-pixel and blue sub-pixel are used.
  • the red sub-pixel, the green sub-pixel and the blue sub-pixel can also be sub-pixels of other colors.
  • the sub-pixel arrangement in the light-emitting unit disposed in the second area 200 may be adaptively adjusted as needed, for example, the first type of light-emitting unit shown in FIG. 3 is disposed in the first area 100, and the second-type light-emitting unit is disposed in the second area.
  • a second type of light emitting unit shown in Fig. 5 is disposed in 200.
  • the sub-pixels of the first region 100 are reduced by pixel sharing without affecting the resolution (Pixels Per Inch, PPI for short) to reduce the influence on the display.
  • each of the two light-emitting units is reduced by two sub-pixels, thereby increasing the transmittance by at least More than 50%; and the density of the light-emitting unit is the same as that of the second region 200, and therefore, the resolution thereof is not affected.
  • the sub-pixels of the second type of light-emitting unit 102 are distributed in a shape of a pair of triangles of a common vertex.
  • Each of the two light-emitting units is reduced by one sub-pixel, so that the light transmittance is increased by at least 20% or more; and the density of the light-emitting unit is the same as that of the second region 200, and therefore, the resolution thereof is not affected.
  • the second area may also be provided with a third type of light emitting unit.
  • the third type of light emitting unit includes a first sub-pixel, a second sub-pixel, and a third sub-pixel; and the sub-pixels of the third-type light-emitting unit are distributed in a triangular shape.
  • the third type of light-emitting unit in the second region can be considered to have three sub-pixels alternating and distributed in a triangular shape.
  • the first sub-pixel, the second sub-pixel, and the third sub-pixel are red, green, and blue, respectively.
  • the first sub-pixel, the second sub-pixel, and the third sub-pixel may emit color lights of different colors, for example, three colors of red (R), green (G), and blue (B).
  • the color lights emitted by the three sub-pixels are different from each other.
  • the pixel density of the first region is lower than the pixel cell density of the second region.
  • a display screen includes a first area 100 and a second area 200.
  • the pixel cell density of the first region 100 is lower than the pixel cell density of the second region 200.
  • a conventional mobile phone display screen can include a first area 100 that sets up the camera and a second area 200 that is primarily used to display images.
  • the first area 100 and the second area 200 are formed on the display screen of the mobile phone, and both the first area 100 and the second area 200 can be used to display an image, that is, if the entire display screen is observed with the naked eye, The entire display is displayable, the so-called full screen. Since the pixel unit density of the first area 100 is lower than that of the second area 200, the light intensity requirement of the under-screen photosensitive module such as the front camera of the mobile phone can be satisfied, so that the position of the front camera is not required, so that the effective time can be saved.
  • the non-display area above the display area enlarges the screen ratio and optimizes the use feeling, thereby solving the technical problem that the presence of the non-display area causes the user to feel poorly.
  • the minimum repeating unit 110 of the first region 100 includes a pixel unit 111 and a first blank area 112, and the pixel unit carried by the first blank area
  • the number is one.
  • the first sub-pixel, the second sub-pixel, and the third sub-pixel are respectively a red sub-pixel (R), a green sub-pixel (G), and a blue sub-pixel (B).
  • the pixel unit 111 is composed of two red sub-pixels, two green sub-pixels, and two blue sub-pixels, six sub-pixels. As a whole, the sub-pixels in the first region 100 are arranged to be arranged in a plurality of identical column groups in the vertical direction.
  • the first column is a repeated form of the BRG unit (ie, a blue sub- The pixel (B), the red sub-pixel (R), and the green sub-pixel (G) are alternately repeated), and the second column is an RGB unit repeating form (ie, a red sub-pixel (R), a green sub-pixel (G), and a blue sub-pixel. (B) alternately repeating), the longitudinal distance between adjacent BRG units in the first column is greater than the longitudinal distance between sub-pixels in the BRG unit, and the longitudinal distance between adjacent RGB units in the second column is greater than the sub-pixels in the RGB unit The longitudinal distance between the adjacent column groups is greater than the distance between the pixel columns in the column group.
  • the sub-pixel arrangement manner disposed in the second region 200 may be: the first column of pixels is a GRB mode.
  • the second column of pixels is in the RBG mode, and the blue sub-pixel B is shared by the adjacent red sub-pixels R and the green sub-pixels G.
  • the minimum repeating unit 110 of the first region 100 includes two pixel units 111 and a second blank area 113, and the number of pixel units that the second blank area can carry is Two.
  • the pixel unit 111 is composed of one red sub-pixel, one green sub-pixel, and one blue sub-pixel three sub-pixels.
  • the minimum repeating units distributed in the adjacent two rows or two columns are misaligned to display uniformity and improve display effect.
  • the pixel unit of the first region 100 includes two red sub-pixels, two green sub-pixels, and two blue sub-pixels; the pixel unit of the second region 200 includes a red sub-pixel, One green subpixel and one blue subpixel.
  • a blank area may be provided in both the first area 100 and the second area 200. Specifically, referring to FIG. 8A and FIG.
  • the pixel unit in the first region 100 herein is composed of two red sub-pixels, two green sub-pixels, and two blue sub-pixels, six sub-pixels, and the second region 200
  • the pixel unit in the middle consists of one red sub-pixel, one green sub-pixel, and one blue sub-pixel three sub-pixels.
  • the light emission of one pixel unit needs to cover the first blank area and/or the second blank area, so as to avoid The display brightness of the display is reduced.
  • a driving method of a display screen is provided to solve the technical problem that the display brightness of the display screen is reduced.
  • a driving method of a display screen includes:
  • S200 determining whether the pixel unit corresponding to the driving signal is in the first region 100 of the display screen or in the second region 200; wherein the physical pixel density of the first region 100 is smaller than the physical pixel density of the second region 200;
  • the drive signal is first received. Then, the corresponding address information is searched for in the drive signal. Based on the address information, the pixel unit driven by the driving signal is judged, or whether the sub-pixel is in the first region 100 or in the second region 200 (because the pixel unit is composed of a plurality of sub-pixels).
  • the pixel unit or the sub-pixel driven by the driving signal is in the first area 100, it indicates that the display brightness may be low if the area is displayed as normal.
  • the pixel unit or the sub-pixel driven by the driving signal is in the second area 200, it indicates that if the area is displayed as normal, the display brightness may be normal, and no additional correction is needed.
  • the driving signal is corrected in a preset manner to generate a modified driving signal, and then the pixel unit is driven by the modified driving signal. Subpixel work.
  • the driving signal is not corrected, and the corresponding pixel unit or sub-pixel is directly driven by using the driving signal.
  • the driving signal is corrected in an arithmetic mean or a weighted average manner.
  • the driving may be performed as follows: driving signals of the sub-pixels and driving signals of the blank areas adjacent to the specified direction may drive the blank area The signal is directly ignored, and the parameter representing the luminance value or the grayscale value in the driving signal of the blank area may be superimposed on the sub-pixel adjacent to the blank area to prevent the brightness from decreasing. It may be a superposition of direct summation methods, which may be superimposed by means of averaging the summed arithmetic, or may be superimposed according to a weighted average of certain weight values. After the correction of the driving signal, the reduction of the display brightness caused by the presence of the blank area can be alleviated to some extent.
  • the application also provides a driving algorithm, the first driving algorithm is a 1:2 algorithm, and the other algorithm is a 3:4 algorithm.
  • the 1:2 algorithm please refer to FIG. 2A, FIG. 2B and FIG. 3, and the sub-pixels shared in the form of a common edge can be seen that two sub-pixels are defaulted.
  • the driving signals of the remaining sub-pixels are calculated in units of two pixel units.
  • a default driving signal of one blue sub-pixel and a driving signal of a non-default blue sub-pixel are calculated, and after the modified driving signal is calculated according to an algorithm, the common blue sub-pixel is driven to work. The same is true for the shared red sub-pixels, and will not be described here.
  • the sub-pixels shared by the common vertices can be seen to default to one sub-pixel.
  • the driving signals of the remaining sub-pixels are calculated in units of four pixel units.
  • the default driving signal of one red sub-pixel and the driving signal of the non-default red sub-pixel are calculated, and after the modified driving signal is calculated according to the algorithm, the common red sub-pixel is driven to operate.
  • the present application further provides a display device, including:
  • Display screen 30 the display screen includes a first area and a second area, the physical pixel density in the first area being less than the physical pixel density in the second area.
  • the lower photosensitive module 31 is capable of sensing light that is incident through the first area of the display screen.
  • the pixel unit includes a plurality of sub-pixels, one sub-pixel is a physical pixel, and thus the pixel unit density in the first region is also smaller than the second pixel.
  • the density of pixel cells in the area is smaller than the physical pixel density in the second region.
  • the display device herein can be understood as a stand-alone product such as a mobile phone, a tablet computer or the like.
  • the display device may also include a DC power source, a DC power source or an AC power interface, a memory, a processor, and the like.
  • the DC power source here can be a lithium battery in a specific application.
  • the DC power supply or AC power interface can be a mirco-USB plug interface in a specific application.
  • the memory can be a flash chip.
  • the processor can be a CPU with a computing function, a single chip microcomputer, or the like.
  • the under-screen photosensitive module 31 may be a front camera or a photoelectric sensor.
  • the photosensor may specifically be an infrared sensor for measuring whether a human face is close to the display screen.
  • the under-the-screen photosensitive module is embedded under the display screen by 4 mm to 6 mm.
  • the inventor found that in the display screen, as the depth of light propagation becomes larger, the illumination intensity is attenuated, and when the photosensitive module under the screen is embedded in the depth of 4 mm to 6 mm under the display screen, the stable assembly of the photosensitive module under the screen can be ensured. It can also ensure that the light intensity is within the required range.
  • the display screen in the embodiment provided by the present application can be prepared by using AMOLED technology.
  • a production method (a method which can be referred to as an organic light-emitting display device in this embodiment) is as follows.
  • the substrate 11 is prepared.
  • the substrate 11 has a first sub-pixel region, a second sub-pixel region, and a third sub-pixel region.
  • a set of first sub-pixel regions, second sub-pixel regions, and third sub-pixel regions may constitute one pixel unit region.
  • the substrate 11 may have a plurality of pixel unit regions.
  • the first sub-pixel region may be a sub-pixel region that emits red light
  • the second sub-pixel region may be a sub-pixel region that emits green light
  • the third sub-pixel region may be a sub-pixel region that emits blue light.
  • the substrate 11 may be formed of a suitable material such as a glass material, a metal material, or a plastic material including polyethylene terephthalate (PET), polyethylene naphthalate (PEN), or polyimide. .
  • a thin film transistor (TFT) may be formed on the substrate 11.
  • an additional layer such as buffer layer 12 may be formed on substrate 11 prior to forming the TFT.
  • the buffer layer 12 may be formed on the entire surface of the substrate 11, or may be formed by being patterned.
  • the buffer layer 12 may be a layered structure formed of a layered structure in a single layer or a plurality of layers by a suitable material including a material including PET, PEN, polyacrylate, and/or polyimide.
  • the buffer layer 12 may also be formed of silicon oxide or silicon nitride, or may comprise a composite layer of an organic material and/or an inorganic material.
  • the TFT array can control the emission of each sub-pixel, or can control the amount of emission when each sub-pixel emits light.
  • Each of the TFTs in the TFT array may include a semiconductor layer 21, a gate electrode 22, a source electrode 23, and a drain electrode 24.
  • the semiconductor layer 21 may be formed of an amorphous silicon layer, a silicon oxide layer metal oxide or a polysilicon layer, or may be formed of an organic semiconductor material. In one embodiment, the semiconductor layer 21 includes a channel region and source and drain regions doped with dopants. The semiconductor layer 21 can be covered with the gate insulating layer 25.
  • the gate electrode 22 may be disposed on the gate insulating layer 25. In one embodiment, the gate insulating layer 25 may be formed by patterning.
  • the gate insulating layer 25 may be formed of silicon oxide, silicon nitride, or other insulating organic or inorganic material in consideration of adhesion to an adjacent layer, formability of a stacked target layer, and surface flatness.
  • Gate electrode 22 may be covered by an interlayer insulating layer 26 formed of silicon oxide, silicon nitride, and/or other suitable insulating organic or inorganic materials. A portion of the gate insulating layer 25 and the interlayer insulating layer 26 may be removed, and a contact hole is formed after the removal to expose a predetermined region of the semiconductor layer 21. The source electrode 23 and the drain electrode 24 may contact the semiconductor layer 21 via the contact hole.
  • the source electrode 23 and the drain electrode 24 may be composed of aluminum (Al), platinum (Pt), palladium (Pd), silver (Ag), magnesium (Mg), gold (Au), nickel (Ni), ⁇ (Nd), iridium (Ir), chromium (Cr), lithium (Li), calcium (Ca), molybdenum (Mo), titanium (Ti), tungsten (W) and copper (Cu) or other suitable alloys
  • Al aluminum
  • platinum (Pt) palladium
  • silver Ag
  • gold Au
  • iridium (Ir) chromium
  • Li lithium
  • Ca calcium
  • Mo molybdenum
  • Ti titanium
  • W tungsten
  • Cu copper
  • a protective layer 27 formed of silicon oxide, silicon nitride, and/or other suitable insulating organic or inorganic material may cover the TFT.
  • the protective layer 27 covers all or part of the substrate 11. Since the TFT having a complicated layer structure is disposed under the protective layer 27, the top surface of the protective layer 27 may not be sufficiently flat. Therefore, it is necessary to form the planarization layer 28 on the protective layer 27 in order to form a sufficiently flat top surface.
  • a via hole may be formed in the protective layer 27 and the planarization layer 28 to expose the source electrode 23 and the drain electrode 24 of the TFT.
  • the first sub-pixel electrode 31, the second sub-pixel electrode 32, and the third sub-pixel electrode 33 are formed on the planarization layer 28.
  • the first sub-pixel electrode 31 is formed in the first sub-pixel region
  • the second sub-pixel electrode 32 is formed in the second sub-pixel region
  • the third sub-pixel electrode 33 is formed in the third sub-pixel region.
  • the first sub-pixel electrode 31, the second sub-pixel electrode 32, and the third sub-pixel electrode 33 may be formed simultaneously or synchronously.
  • Each of the first sub-pixel electrode 31, the second sub-pixel electrode 32, and the third sub-pixel electrode 33 may be electrically connected to the TFT through a via.
  • the first sub-pixel electrode 31, the second sub-pixel electrode 32, and the third sub-pixel electrode 33 are generally referred to as anodes.
  • Each of the first sub-pixel electrode 31, the second sub-pixel electrode 32, and the third sub-pixel electrode 33 may form a transparent electrode (transflective) or a reflective electrode.
  • the first sub-pixel electrode 31, the second sub-pixel electrode 32, and the third sub-pixel electrode 33 may be made of indium tin oxide (ITO), indium zinc oxide (IZO), or zinc oxide. (ZnO), indium oxide (In 2 O 3 ), indium gallium oxide (IGO) or aluminum zinc oxide (AZO).
  • the first sub-pixel electrode 31, the second sub-pixel electrode 32, and the third sub-pixel electrode 33 form a reflective electrode
  • silver (Ag), magnesium (Mg), aluminum (Al), platinum (Pt), palladium (Pd) may be used.
  • An auxiliary layer formed of a transparent electrode material such as indium zinc (IZO), zinc oxide (ZnO), or indium oxide (In2O3) is stacked to form a reflective electrode layer.
  • the structures and materials of the first sub-pixel electrode 31, the second sub-pixel electrode 32, and the third sub-pixel electrode 33 are not limited thereto and may be varied.
  • a pixel defining layer 41 may be formed.
  • the PDL may be used to define a sub-pixel by having an opening corresponding to each sub-pixel (ie, exposing a central portion opening of each sub-pixel).
  • the PDL may be formed of a suitable organic material such as a polyacrylate and polyimide or a single material layer or composite layer including a suitable inorganic material.
  • the PDL may be formed in such a manner that a layer for PDL is formed on the entire surface of the substrate 11 by using a material suitable for PDL to cover the first sub-pixel electrode 31, the second sub-pixel electrode 32, and the third sub- Pixel electrode 33. Then, the PDL layer will be patterned to expose the central portions of the first sub-pixel electrode 31, the second sub-pixel electrode 32, and the third sub-pixel electrode 33.
  • the luminescent material 51 can be formed by vapor-depositing a luminescent material.
  • the vapor deposition material covers at least a portion of the first sub-pixel electrode 31 that is not covered by the PDL layer, covers a portion of the second sub-pixel electrode 32 that is not covered by the PDL layer, and covers a portion of the third sub-pixel electrode 33 that is not covered by the PDL layer.
  • a luminescent material that emits red, green, and blue light can be evaporated using a precision metal mask.
  • vapor deposition forms a counter electrode 61 covering the first sub-pixel region, the second sub-pixel region, and the third sub-pixel region.
  • the counter electrode 61 may be integrally formed with respect to a plurality of sub-pixels so as to cover the entire display area.
  • Counter electrode 61 is commonly referred to as a cathode.
  • the counter electrode 61 contacts the electrode supply line outside the display area, so that the electrode supply line can receive an electrical signal.
  • the counter electrode 61 may form a transparent electrode or a reflective electrode.
  • the counter electrode 61 may be formed by depositing a mixed material of Li, Ca, LiF/Ca, LiF/Al, Al, Mg, or any of these materials in the direction toward the light emitting layer.
  • the counter electrode 61 When the counter electrode 61 is formed as a reflective electrode, the counter electrode 61 may have a layer including one or more materials selected from Li, Ca, LiF/Ca, LiF/Al, Al, Ag, and Mg. However, the configuration and material of the counter electrode 61 are not limited thereto, and thus may be changed.

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Abstract

一种显示屏、显示屏驱动方法及显示装置，其中，显示屏包括：第一区域和第二区域，其中，第一区域中的实体像素密度小于第二区域中的实体像素密度。本实施例通过设置第一区域与第二区域，并使第二区域的实体像素密度大于第一区域的实体像素密度，从而使光线可以从第一区域的像素间隙透出以实现较高的透光率，进而实现满屏或全屏显示。可以省去有效显示区上方的非显示区，扩大屏占比，优化使用感受，从而，可以解决非显示区的存在导致使用者的使用感受不佳的技术问题。

Description

显示屏、显示屏驱动方法及其显示装置
本申请要求如下所述的中国专利申请的优先权，其全部内容通过引用结合在本申请中：
于2017年09月30日提交中国专利局，申请号为201710938216.6、申请名称为“显示屏及显示装置”的中国专利申请；
于2017年09月30日提交中国专利局，申请号为201710937430.X、申请名称为“显示屏及显示装置”的中国专利申请；
于2017年09月30日提交中国专利局，申请号为201710938832.1、申请名称为“显示屏、显示屏驱动方法及其显示装置”的中国专利申请；
于2018年02月09日提交中国专利局，申请号为201810135642.0、申请名称为“显示屏及显示装置”的中国专利申请；
于2018年02月09日提交中国专利局，申请号为201810135319.3、申请名称为“显示屏及显示装置”的中国专利申请；
于2018年02月09日提交中国专利局，申请号为201810135316.X、申请名称为“显示屏、显示屏驱动方法及其显示装置”的中国专利申请。
技术领域
本申请涉及显示领域，特别涉及一种显示屏、显示屏驱动方法及显示装置。
背景技术
传统技术中，显示屏包括有效显示区和处于有效显示区上方的非显示区。对于具有触控功能的智能手机而言，有效显示区可以用于展示人机界面，以及操作人机界面提供的应用。例如，在有效显示区显示智能手机的视频播放应用播放的一段视频。然而，非显示区的存在导致使用者的使用感受不佳。
发明内容
基于此，有必要针对上述非显示区的存在导致使用者的使用感受不佳的技术问题，提供一种解决方案。
一种显示屏，包括：第一区域和第二区域，所述第一区域中的实体像素密度小于所述第二区域中的实体像素密度。
在一个实施例中，在所述第一区域中的发光单元与所述第二区域的发光单元不同；
所述第一区域中的发光单元包括：第一子像素、第二子像素和第三子像素；第一子像素、第二子像素和第三子像素中至少一个子像素的数量与另外两个子像素的数量不相同。
在一个实施例中，所述第一区域的发光单元数量为一个以上；所述第二区域的发光单元数量为一个以上。
在一个实施例中，所述第一区域分布第一类发光单元；所述第一类发光单元呈共边的一对三角形的形状分布。
在一个实施例中，所述第一类发光单元中，第一子像素为红色子像素且数量为一个、第二子像素为绿色子像素且数量为二个，第三子像素为蓝色子像素且数量为一个，所述一个红色子像素、所述一个蓝色子像素分别位于所述一对三角形公共边的顶点，所述二个绿色子像素分别位于所述一对三角形的剩余顶点；
从整体上看，布设在第一区域的子像素，在横向上，红色子像素、绿色子像素、蓝色子像素各自排列成行并且相邻行的颜色不相同；在纵向上，绿色子像素排列成多个列组，每个列组包含两列，在每个列组之间以相间的方式分布着红色子像素和蓝色子像素，列组之间直接相邻。
在一个实施例中，所述第一区域分布第二类发光单元；所述第二类发光单元呈共顶点的一对三角形的形状分布。
在一个实施例中，所述第二类发光单元中，第一子像素为红色子像素且数量为一个、第二子像素为绿色子像素且数量为二个，第三子像素为蓝色子像素且数量为二个，所述一个红色子像素位于所述一对三角形的公共顶点，所述二个绿色子像素和二个蓝色子像素分别位于所述一对三角形中剩余的顶点，使得每个三角形的各顶点呈现不同的子像素，
从整体上看，布设在第一区域的子像素，在横向上，蓝色子像素排列成多个行组，每个行组具有两行，在之间分布着一行红色子像素行和一行绿色子像素；相邻行组之间的距离大于红色子像素行和一行绿色子像素之间的距离；在纵向上，排布为多个相同的列组，在每个列组中，第一列为GBGB形式，第二列为BRBR形式，第三列为纯绿色子像素；相邻列组之间的距离大于列组内像素列之间的距离。
在一个实施例中，所述第二区域分布的发光单元包括红色子像素、绿色子像素和蓝色子像素。
根据本申请的另一方面，提供了一种显示屏，包括：第一区域和第二区域；所述第一区域的像素单元密度低于所述第二区域的像素单元密度。
在一个实施例中，所述第一区域的最小重复单元包括一个像素单元、一个第一空白区，所述第一空白区承载的像素单元的数量为一个。
在一个实施例中，所述第一区域的最小重复单元包括：两个像素单元和一个第二空白区，所述第二空白区承载的像素单元的数量为两个。
在一个实施例中，相邻两行或两列分布的所述最小重复单元错位排列。
在一个实施例中，所述第一区域的像素单元包括：两个红色子像素、两个绿色子像素和两个蓝色子像素；；从整体上看，第一区域中的子像素排布为：在纵向上，排布为多个相同的列组，在每个列组中，第一列为BRG单元重复形式，第二列为RGB单元重复形式，第一列中相邻BRG单元之间的纵向距离大于BRG单元内子像素之间的纵向距离，第二列中相邻RGB单元之间的纵向距离大于RGB单元内子像素之间的纵向距离，相邻列组之间的距离大于列组内像素列之间的距离；
所述第二区域的像素单元包括一个红色子像素、一个绿色子像素和一个蓝色子像素。
根据本申请的另一方面，提供了一种显示屏的驱动方法，包括：
接收驱动信号；
判断所述驱动信号对应驱动的子像素处于所述显示屏的第一区域还是处于第二区域，所述第一区域的实体像素密度低于所述第二区域的实体像素密度；
当所述驱动信号对应驱动的子像素处于第一区域时，按照预设方式对所述驱动信号进行修正；
使用修正后的所述驱动信号驱动对应的所述第一区域的子像素；
当所述驱动信号对应驱动的子像素处于第二区域时，使用所述驱动信号驱动对应的所述第二区域的子像素。
在一个实施例中，按照算术平均或加权平均的方式，对所述驱动信号进行修正。
根据本申请的另一方面，提供了一种显示装置，包括：
显示屏；所述显示屏包括第一区域和第二区域，所述第一区域的实体像素密度低于所述第二区域的实体像素密度；
屏下光敏模块，所述屏下光敏模块能感应穿过所述显示屏的第一区域而照射进来的光。
在一个实施例中，所述屏下光敏模块包括光电传感器、和前置摄像头中的至少一种。
在一个实施例中，所述屏下光敏模块嵌入所述显示屏下4mm-6mm。
本申请提供的技术方案至少具有如下有益技术效果：
通过设置第一区域与第二区域，并使第二区域的实体像素密度大于第一区域的实体像 素密度，从而使光线可以从用以放置摄像头等屏下光敏模块的第一区域的像素间隙透出以实现较高的透光率，进而实现满屏或全屏显示。既满足了摄像头正常显示的要求，又兼顾了放置摄像头等屏下光敏模块的位置需保持较高透光率的要求，由于不用为前置摄像头等屏下光敏模块预留位置，可以省去有效显示区上方的非显示区，扩大屏占比，优化使用感受，从而，可以解决非显示区的存在导致使用者的使用感受不佳的技术问题。
通过设置第一区域与第二区域，并使第二区域的像素单元密度大于第一区域的像素单元密度，从而使光线可以从用以放置摄像头等屏下光敏模块的第一区域的像素间隙透出以实现较高的透光率，进而实现满屏或全屏显示。既满足了摄像头正常显示的要求，又兼顾了放置摄像头等屏下光敏模块的位置需保持较高透光率的要求，由于不用为前置摄像头等屏下光敏模块预留位置，可以省去有效显示区上方的非显示区，扩大屏占比，优化使用感受，从而，可以解决非显示区的存在导致使用者的使用感受不佳的技术问题。
附图说明
为了更清楚地说明本申请实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍。显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本申请提供的一种显示屏的结构示意图；
图2A为本申请提供的一种显示屏的局部结构示意图；
图2B为本申请提供的一种显示屏的局部结构示意图；
图3为图2A、图2B提供的显示屏的第一区域的第一类发光单元的结构示意图；
图4A为本申请提供的另一种显示屏的局部结构示意图；
图4B为本申请提供的另一种显示屏的局部结构示意图；
图4C为图4A、图4B所示的显示屏的第一区域100的局部放大示意图；
图5为图4A、图4B、图4C提供的显示屏的第一区域的第一类发光单元的结构示意图；
图6A为本申请实施例提供的显示屏的第一种子像素排布结构示意图；
图6B为本申请实施例提供的显示屏的第一种子像素排布结构示意图；
图6C为本申请实施例提供的显示屏的第一种子像素排布结构示意图；
图7A为本申请实施例提供的显示屏的第二种子像素排布结构示意图；
图7B为本申请实施例提供的显示屏的第二种子像素排布结构示意图；
图8A为本申请实施例提供的显示屏的第三种子像素排布结构示意图；
图8B为本申请实施例提供的显示屏的第三种子像素排布结构示意图；
图9为本申请实施例提供的显示屏的驱动方法的流程示意图；
图10为本申请提供的显示装置的结构示意图；
图11为本申请实施例提供的有机发光显示装置的层状结构示意图。
附图中，各标号所代表的部件列表如下：
100、第一区域；200、第二区域；30、显示屏；31、屏下光敏模块；101、第一类发光单元；102、第二类发光单元；110、最小重复单元；111、像素单元；112、第一空白区；113、第二空白区。
具体实施方式
为使本申请的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本申请进行进一步的详细说明。应当理解，此处所描述的具体实施方式仅仅用以解释本申请，并不限定本申请的保护范围。
一种显示屏，如图1所示，包括第一区域100和第二区域200，所述第一区域100中 的实体像素密度小于所述第二区域200中的实体像素密度。
第一区域100在具体应用中，通常用于设置屏下光敏模块。例如，用于拍照的摄像头、用于感测人脸部是否贴近显示屏的光电传感器。第二区域200在具体的应用中，通常可以用于显示图像或者实现触控功能。第二区域200在功能上主要体现为主显示区，具有相对于第一区域100相对较高的实体像素密度。其中，实体像素密度是指单位面积上实际制备得到的物理像素个数，而非单位面积上参与显示的像素个数。第一区域100在功能上主要体现为辅显示区，具有相对于第二区域200相对较低的实体像素密度。第一区域100在功能上还体现为让光线穿过显示屏进入内部，以满足屏下光敏模块的光照强度要求或者感光量要求。因此，在本实施例中，第一区域100中的实体像素密度小于第二区域200中的实体像素密度，以便光线穿过显示屏进入内部。
本申请提供的实施例至少具有如下效果：由于第一区域100具有相对较低的实体像素密度，因此，可以在第一区域100的下方设置摄像头等屏下光敏模块，从而使光线可以从子像素间隙透入以实现较高的透光率，同时实现满屏或全屏显示。
一些实施例中的具体实现方法可以是，采用PDL层限定开口以便沉积子像素，然后采用蒸镀工艺，对PDL层限定的开口蒸镀子像素，蒸镀形成的子像素即为实体像素，从而以使第一区域100的子像素密度低于所述第二区域200的子像素密度。因此，上述实体像素密度也可以称为子像素密度。
在图1所示的实施例中，第二区域200作为显示屏的主显示区，占据了显示屏的大部分面积。第一区域100作为显示屏的辅显示区，分布于显示屏的上侧。第一区域100和第二区域200共同形成显示屏的整个显示区域。在图1所示的实施例中，第一区域100和第二区域200相对位于显示屏的两端。即，显示屏包括相对设置的第一端和第二端，其中，第一区域100设置在显示屏的第一端，第二区域200设置在显示屏的第二端。第一区域100和第二区域200沿终端的长度方向设置。在其他的实施例中，第一区域100和第二区域200也可以沿终端的宽度方向设置。应当指出的是，这里第一区域100和第二区域200之间的位置关系可以根据实际情形来调整。例如，第一区域100可以位于第二区域200的左侧、右侧或下侧。或者，第一区域100分布于第二区域200的周围，将第二区域200包围于显示屏的中部。只要显示屏中具有两个相对的对光照强度不同要求的区域，就应当理解为未脱离本申请实质性保护的范围。
在本申请中，通过控制实体像素密度，在手机显示屏形成第一区域100和第二区域200。第一区域100和第二区域200均可以用来显示图像，也就是说，整个显示屏用肉眼来观察的话，整个显示屏都是可以显示的，即实现了所谓全面屏。由于不用为摄像头等屏下光敏模块预留位置，因此可以省去有效显示区上方的非显示区，扩大屏占比，优化使用感受，从而可以解决非显示区的存在导致使用者的使用感受不佳的技术问题。并且，由于第一区域100的实体像素密度相对较低可以满足手机的摄像头等屏下光敏模块的光照强度要求。
在一个实施例中，在所述第一区域中的发光单元与所述第二区域中的发光单元不同。第一区域中的发光单元可以由发光颜色互不相同的第一子像素、第二子像素和第三子像素组成；第一子像素、第二子像素和第三子像素中至少一个子像素的数量与另外两个子像素的数量不等。一个实施例中，第一子像素、第二子像素和第三子像素分别为红色子像素(R)、绿色子像素(G)、蓝色子像素(B)。此时，所述第一区域100分布的发光单元包括：红色子像素、绿色子像素和蓝色子像素；红色子像素、绿色子像素和蓝色子像素中至少一个子像素的数量与另外两个子像素的数量不相同。从而，通过使得红色子像素、绿色子像素和蓝色子像素中至少一个子像素的数量与另外两个子像素的数量不等，可以通过共用红色子像素、绿色子像素和蓝色子像素中至少一个以实现白平衡，同时提供使光线透过的间隙。
在本申请提供的实施方式中，可以在传统显示屏的主显示区的基础上不做改动，即对第二区域200不做改动，而对传统显示屏的辅显示区的子像素做改动，即对第一区域100 的子像素做改动。这样，使得第一区域100中的发光单元与所述第二区域200中的发光单元不同，从而，光线可以从第一区域的子像素间隙透入以实现较高的透光率，实现满屏或全屏显示，同时，不影响屏下光敏模块的工作。
在一个实施例中，所述第一区域100布设的发光单元数量为一个以上，所述第二区域200布设的发光单元数量也为一个以上。
主动矩阵有机发光二极管(Active Matrix Organic Light Emitting Diode，AMOLED)是将有机发光二极管(Organic Light Emitting Diode，OLED)像素淀积或集成在TFT阵列上，通过TFT阵列来控制流入每个OLED像素的电流大小，从而决定每个像素点发光强度的显示技术。在本申请提供的实施方式中，可以对第一区域100布设的发光单元和第二区域200布设的发光单元使用相同的驱动算法控制发光，也可以对第一区域100布设的发光单元和第二区域200布设的发光单元使用不同的驱动算法控制发光。
在应用中，例如，对于手机显示屏而言，对传统的手机显示屏的显示部分可以不进行改变，而对于传统的手机显示屏的设置前置摄像头等屏下光敏模块的位置布设多个上述第一区域100的发光单元。这样的好处是，由于前置摄像头等屏下光敏模块需要一定的光照强度或者说感光量才能达到良好的拍摄效果。当前置摄像头等光敏模块设置于显示屏的层状结构的后方时，在对应于设置前置摄像头的位置布设上述第一区域100的发光单元，通过共用红色子像素、绿色子像素和蓝色子像素中至少一个以实现白平衡的同时提供供光线透过的间隙，从而可以满足摄像头等屏下光敏模块的光照强度或感光量的要求。
请参见图2A、图2B和图3，所述第一区域100可以布设第一类发光单元101(或者说最小重复单元)。该第一类发光单元101可以包括：一个第一子像素、二个第二子像素和一个第三子像素。
例如，第一子像素、第二子像素和第三子像素分别为红色子像素(R)、绿色子像素(G)、蓝色子像素(B)。
在一个实施例中，所述第一类发光单元101呈共边的一对三角形的形状(如图3)，以第一子像素、第二子像素和第三子像素分别为红色子像素(R)、绿色子像素(G)、蓝色子像素(B)为例，即，一个红色子像素(R)和一个蓝色子像素(B)的连线形成了共边三角形的公共边，二个绿色子像素(G)分别位于所述一对三角形的剩余顶点。从整体上看，布设在第一区域100的子像素，在横向上，红色子像素、绿色子像素、蓝色子像素各自排列成行并且相邻行的颜色不相同；在纵向上，绿色子像素排列成多个列组，每个列组包含两列，在每个列组之间以相间的方式分布着红色子像素和蓝色子像素，列组之间直接相邻，换句话说，相邻列组之间无红色子像素和蓝色子像素。
需要理解的是，由于有机发光二极管OLED是依靠发光材料来自发光的。而不同颜色的发光材料的衰减速率是不同的。通常来说，红色发光材料的衰减速率为三种颜色中最慢的，其发光寿命最长。另外，绿光为红色、绿色和蓝色中人眼最为敏感的颜色，因此，减少绿色子像素的数量，人眼会很容易的感受到。因此，本申请将红色子像素和蓝色子像素作为公用像素，以避免像素公用后对人眼视觉感知造成影响，并平衡各个颜色子像素的发光寿命。
还如图2A、图2B和图3，以第一子像素、第二子像素和第三子像素分别为红色子像素(R)、绿色子像素(G)、蓝色子像素(B)为例，布设在第二区域200的子像素排布方式可为：第一列像素为GRB方式，第二列像素为RBG方式，蓝色子像素B被相邻的红色子像素R和绿色子像素G共用。
可以理解的是，这里仅以最常见的红色子像素、绿色子像素和蓝色子像素所做的举例，这里的红色子像素、绿色子像素和蓝色子像素还可以以其他颜色的子像素替代。
如图4A、图4B、图4C和图5所示，在所述第一区域100可以布设第二类发光单元 102。图4C作为第一区域100的局部放大示意图，从整体上显示了第一区域100内的第二类发光单元102的布置方式。所述第二类发光单元102呈共顶点的一对三角形的形状分布。
以第一子像素、第二子像素和第三子像素分别为红色子像素(R)、绿色子像素(G)、蓝色子像素(B)为例，如图4A、图4B、图4C和图5所示，该第二类发光单元102包括一个红色子像素、二个绿色子像素和二个蓝色子像素，所述一个红色子像素位于一对三角形的公共顶点，二个绿色子像素和二个蓝色子像素分别位于所述一对三角形中剩余的顶点，使得每个三角形的各顶点呈现不同的子像素。
从整体上看，布设在第一区域100的子像素，在横向上，蓝色子像素排列成多个行组，每个行组具有两行，在之间分布着一行红色子像素行和一行绿色子像素；相邻行组之间的距离大于红色子像素行和一行绿色子像素之间的距离；在纵向上，排布为多个相同的列组，在每个列组中，第一列为GBGB(绿色子像素与蓝色子像素交替)形式，第二列为BRBR(蓝色子像素与红色子像素交替)形式，第三列为纯绿色子像素；相邻列组之间的距离大于列组内像素列之间的距离。只将红色子像素作为公用像素，可以在减小像素密度的同时，平衡各颜色子像素的发光寿命。
如图4A、图4B、图4C所示，以第一子像素、第二子像素和第三子像素分别为红色子像素(R)、绿色子像素(G)、蓝色子像素(B)为例，布设在第二区域200的子像素排布方式可为：第一列像素为GRB方式，第二列像素为RBG方式，蓝色子像素B被相邻的红色子像素R和绿色子像素G共用。
可以理解的是，这里仅以最常见的红色子像素、绿色子像素和蓝色子像素所做的举例，这里的红色子像素、绿色子像素和蓝色子像素还可以以其他颜色的子像素替代。
可以根据需要对第二区域200布设的发光单元中的子像素排布做出适应性调整，例如，在第一区域100中布设图3中所示的第一类发光单元，而在第二区域200中布设图5中所示的第二类发光单元。当然，在第二区域200，还可以采用普通的发光单元进行布设，诸如，具有相同数量的红色子像素、绿色子像素和蓝色子像素的发光单元。
请参照图2A、图3B、图4A和图4B，图4C，分别通过共用红色子像素、蓝色子像素和通过共用红色子像素，在实现白平衡的同时提供供光线透过的间隙，从而可以满足屏下光敏模块的光照强度或感光量的要求。可以理解的是，任何通过子像素共用的方式，在实现白平衡的同时提供供光线透过的间隙，以满足屏下光敏模块的光照强度或感光量的要求的技术方案都，应当理解为未脱离本申请实质性保护的范围。
本申请提供的实施例中，通过像素共用减少第一区域100的子像素，同时不影响其分辨率(Pixels Per Inch，简称PPI)，以减少对显示的影响。
在图2A、图2B所示的实施例中，通过对第一区域100中的像素采用共边三角形的方式排布，每两个发光单元就减少了2个子像素，从而使得透光率增加至少50％以上；且发光单元的密度与第二区域200相同，因此，其分辨率并不受影响。
在图4A、图4B所示的实施例中，第二类发光单元102的子像素采用共顶点的一对三角形的形状分布。每两个发光单元就减少了1个子像素，从而使得透光率增加至少20％以上；且发光单元的密度与第二区域200相同，因此，其分辨率并不受影响。
在本申请提供的一实施例中，第二区域还可以布设第三类发光单元。第三类发光单元包括一个第一子像素、一个第二子像素和一个第三子像素；第三类发光单元的子像素呈三角形的形状分布。在第二区域的第三类发光单元可以认为三个子像素交替，呈三角形的形状分布。在一实施例中，第一子像素、第二子像素和第三子像素分别为红色、绿色和蓝色。第一子像素、第二子像素、第三子像素可以发出不同颜色的色光，例如可以是红色(R)、绿色(G)、蓝色(B)三色。三个子像素发出的色光颜色互不相同。
在一个实施例中，第一区域的像素单元密度低于第二区域的像素单元密度。
请参见图6A至图8，一种显示屏，包括：第一区域100和第二区域200。第一区域100的像素单元密度低于第二区域200的像素单元密度。
在显示屏的一种具体应用中，例如手机显示屏。传统的手机显示屏可以包括设置摄像头的第一区域100和主要用于显示图像的第二区域200。而在本申请中，在手机显示屏形成第一区域100和第二区域200，第一区域100和第二区域200均可以用来显示图像，也就是说，整个显示屏用肉眼来观察的话，整个显示屏都是可以显示的，即所谓全面屏。由于第一区域100的像素单元密度相对第二区域200的较低，可以满足手机的前置摄像头等屏下光敏模块的光照强度要求，因此不用为前置摄像头预留位置，因此可以省去有效显示区上方的非显示区，扩大屏占比，优化使用感受，从而，可以解决非显示区的存在导致使用者的使用感受不佳的技术问题。
在图6A、图6B和图6C所示的实施例中，所述第一区域100的最小重复单元110包括一个像素单元111、一个第一空白区112，所述第一空白区承载的像素单元的数量为一个。例如，第一子像素、第二子像素和第三子像素分别为红色子像素(R)、绿色子像素(G)、蓝色子像素(B)。像素单元111由两个红色子像素、两个绿色子像素和两个蓝色子像素六个子像素组成。从整体上看，第一区域100中子像素排布为：在纵向上，排布为多个相同的列组，在每个列组中，第一列为BRG单元重复形式(即蓝色子像素(B)、红色子像素(R)、绿色子像素(G)交替重复)，第二列为RGB单元重复形式(即红色子像素(R)、绿色子像素(G)、蓝色子像素(B)交替重复)，第一列中相邻BRG单元之间的纵向距离大于BRG单元内子像素之间的纵向距离，第二列中相邻RGB单元之间的纵向距离大于RGB单元内子像素之间的纵向距离，相邻列组之间的距离大于列组内像素列之间的距离。
还如图6A、图6B、图6C所示，布设在第二区域200的发光单元，从整体上看，布设在第二区域200的子像素排布方式可为：第一列像素为GRB方式，第二列像素为RBG方式，蓝色子像素B被相邻的红色子像素R和绿色子像素G共用。
在图7A和图7B所示的实施例中，第一区域100的最小重复单元110包括两个像素单元111和一个第二空白区113，所述第二空白区能承载的像素单元的数量为两个。像素单元111由一个红色子像素、一个绿色子像素和一个蓝色子像素三个子像素组成。所述相邻两行或两列分布的所述最小重复单元错位排列，以显示均匀、改善显示效果。
在一实施例中，所述第一区域100的像素单元包括两个红色子像素、两个绿色子像素和两个蓝色子像素；所述第二区域200的像素单元包括一个红色子像素、一个绿色子像素和一个蓝色子像素。为了提高显示屏的透光率，可以在第一区域100和第二区域200均设置空白区。具体地，请参见图8A、图8B，这里的第一区域100中的像素单元由两个红色子像素、两个绿色子像素和两个蓝色子像素六个子像素组成，而第二区域200中的像素单元由一个红色子像素、一个绿色子像素和一个蓝色子像素三个子像素组成。
请参见图6A至图8，可以理解的是，由于第一空白区和/或第二空白区的存在，使得一个像素单元的发光需要覆盖到第一空白区和/或第二空白区，以免显示屏的显示亮度降低。
在本申请提供的一种实施方式中，提供一种显示屏的驱动方法，以解决显示屏的显示亮度降低的技术问题。
请参照图9，一种显示屏的驱动方法，包括：
S100、接收驱动信号；
S200、判断所述驱动信号对应驱动的像素单元处于所述显示屏的第一区域100还是处于第二区域200；其中，第一区域100的实体像素密度小于第二区域200的实体像素密度；
S301、当所述驱动信号对应驱动的像素单元或者说子像素处于第一区域100时，按照预设方式对所述驱动信号进行修正；
S302、使用修正后的所述驱动信号驱动对应的所述第一区域100的像素单元或者说子像素；
S311、当所述驱动信号对应驱动的像素单元或者说子像素处于第二区域200时，使用所述驱动信号驱动对应的所述第二区域200的像素单元或者说子像素。
首先接收驱动信号。然后，在驱动信号中查找对应的地址信息。根据地址信息，判断驱动信号驱动的像素单元，或者说，判断子像素处于第一区域100还是处于第二区域200(因为像素单元由多个子像素组成)。当驱动信号驱动的像素单元或者说子像素处于第一区域100时，说明该区域如果按照正常显示时，显示亮度可能较低。而当驱动信号驱动的像素单元或者说子像素处于第二区域200时，说明该区域如果按照正常显示时，显示亮度可能正常，不需要额外修正。由此，当驱动信号对应驱动的像素单元或者说子像素处于第一区域100时，对驱动信号按照预设方式进行修正，生成修正的驱动信号，然后，使用修正的驱动信号驱动像素单元或者说子像素工作。而当驱动信号对应驱动的像素单元或者说子像素处于第二区域200时，则不对驱动信号进行修正，直接使用驱动信号驱动对应的像素单元或者子像素工作。
进一步地，在本申请提供的又一实施例中，按照算术平均或加权平均的方式，对所述驱动信号进行修正。
针对每一个子像素和第一空白区和/或第二空白区，可以按照如下方式进行驱动：将子像素的驱动信号和指定方向上相邻的空白区的驱动信号，可以将空白区的驱动信号直接忽略，也可以将空白区的驱动信号中表征亮度值或灰阶值的参数叠加到与该空白区相邻的子像素，以防止亮度降低。可以是直接的求和方式的叠加，可以是将求和后算数平均的方式叠加，可以是依据一定权重值加权平均的方式叠加。对驱动信号修正后，可以在一定程度上减轻空白区存在导致的显示亮度的降低。
本申请还提供一种驱动算法，第一种驱动算法为1:2算法，另一种算法为3:4算法。对于1:2的算法，请参照图2A、图2B和图3，以共边形式共用的子像素，可以看到缺省了两个子像素。如此，以2个像素单元为一个单位，计算剩余的子像素的驱动信号。例如针对图3中，则计算缺省的一个蓝色子像素的驱动信号和未缺省的蓝色子像素的驱动信号，根据算法计算得到修正的驱动信号后，驱动共用的蓝色子像素工作；对于共用的红色子像素而言，同样如此，这里不再赘述。对于3:4的驱动算法，请参照图4A、图4B、图4C和图5，以共顶点形式共用的子像素，可以看到缺省了一个子像素。如此，以4个像素单元为一个单位，计算剩余的子像素的驱动信号。例如针对图5中，计算缺省的一个红色子像素的驱动信号和未缺省的红色子像素的驱动信号，根据算法计算得到修正的驱动信号后，驱动共用的红色子像素工作。
请参照图10，本申请还提供一种显示装置，包括：
显示屏30；所述显示屏包括第一区域和第二区域，所述第一区域中的实体像素密度小于所述第二区域中的实体像素密度。
屏下光敏模块31，所述屏下光敏模块能感应穿过所述显示屏的第一区域而照射进来的光。
由于第一区域中的实体像素密度小于第二区域中的实体像素密度，而像素单元包括多个子像素，一个子像素即为一个实体像素，因而也是的第一区域中的像素单元密度小于第二区域中的像素单元密度。
对于显示屏30、第一区域100和第二区域200，前面部分已经做了详细说明，此处不再赘述。
可以理解的是，这里的显示装置可以理解为一种独立的产品，例如手机、平板电脑等。显示装置还可以包括直流电源、直流电源或交流电源接口、存储器、处理器等。
这里的直流电源在具体的应用中可以为锂电池。直流电源或交流电源接口在具体的应用中可以为mirco-USB插接口。存储器可以为闪存芯片。处理器可以为具有运算功能的CPU、单片机等。
本申请提供的一种具体应用中，屏下光敏模块31可以是前置摄像头、光电传感器。光电传感器具体的可以是用于测量人面部是否靠近显示屏的红外传感器。
在本申请提供的一种实施例中，所述屏下光敏模块嵌入所述显示屏下4mm-6mm。发 明人发现，在显示屏内，随着光传播的深度逐渐变大，光照强度在衰减，当屏下光敏模块嵌入显示屏下4mm-6mm的深度时，既可以保证屏下光敏模块稳定的组装，又可以保证光照强度在需要的范围之内。
本申请提供的实施方式中显示屏可以采用AMOLED技术制备。具体地制备方法(本实施例中可称为制造有机发光显示装置的方法)如下。
请参照图11，首先，准备基板11。基板11具有第一子像素区域、第二子像素区域和第三子像素区域。一组第一子像素区域、第二子像素区域和第三子像素区域可以构成一个像素单元区域。基板11可以具有多个像素单元区域。在一个实施例中，第一子像素区域可以是发射红光的子像素区域；第二子像素区域可以是发射绿光的子像素区域；第三子像素区域可以是发射蓝光的子像素区域。
基板11可以由诸如玻璃材料、金属材料或包括聚对苯二甲酸乙二醇酯(PET)、聚萘二甲酸乙二醇酯(PEN)或聚酰亚胺等的塑胶材料中合适的材料形成。薄膜晶体管(Thin-film transistor，TFT)可以形成在基板11上。在一个实施例中，在形成TFT之前，可以在基板11上形成诸如缓冲层12的另外的层。缓冲层12可以形成在基板11的整个表面上，也可以通过被图案化来形成。缓冲层12可以为层状结构，层状结构由具有包括PET、PEN、聚丙烯酸酯和/或聚酰亚胺等材料中合适的材料，以单层或多层堆叠的形式形成层状结构。缓冲层12还可以由氧化硅或氮化硅形成，或者可以包括有机材料和/或无机材料的复合层。
TFT阵列可以控制每个子像素的发射，或者可以控制每个子像素发射光时发射的量。TFT阵列中的每个TFT可以包括半导体层21、栅电极22、源电极23和漏电极24。
半导体层21可以由非晶硅层、氧化硅层金属氧化物或多晶硅层形成，或者可以由有机半导体材料形成。在一个实施例中，半导体层21包括沟道区和掺杂有掺杂剂的源区与漏区。可以利用栅极绝缘层25覆盖半导体层21。栅电极22可以设置在栅极绝缘层25上。在一个实施例中，可以通过图案化来形成栅极绝缘层25。考虑到与相邻层的粘合、堆叠目标层的可成形性和表面平整性，栅极绝缘层25可以由氧化硅、氮化硅或其他绝缘有机或无机材料形成。栅电极22可以被由氧化硅、氮化硅和/或其他合适的绝缘有机或无机材料形成的层间绝缘层26覆盖。可以去除栅极绝缘层25和层间绝缘层26的一部分，在去除之后形成接触孔以暴露半导体层21的预定区域。源电极23和漏电极24可以经由接触孔接触半导体层21。考虑到导电性，源电极23和漏电极24可以由包括铝(Al)、铂(Pt)、钯(Pd)、银(Ag)、镁(Mg)、金(Au)、镍(Ni)、钕(Nd)、铱(Ir)、铬(Cr)、锂(Li)、钙(Ca)、钼(Mo)、钛(Ti)、钨(W)和铜(Cu)或其他合适的合金中的至少一种材料的单一材料层或复合材料层形成。
由氧化硅、氮化硅和/或其他合适的绝缘有机或无机材料形成的保护层27可以覆盖TFT。保护层27覆盖基板11的全部或局部部分。由于具有复杂的层结构的TFT设置在保护层27下方，使得保护层27的顶表面可能不是足够平坦。因此，有必要在保护层27上形成平坦化层28，以便形成足够平坦的顶表面。
在形成平坦化层28后，可以在保护层27和平坦化层28中形成通孔，以暴露TFT的源电极23和漏电极24。
然后，在平坦化层28上形成第一子像素电极31、第二子像素电极32和第三子像素电极33。第一子像素电极31形成在第一子像素区域，第二子像素电极32形成在第二子像素区域，第三子像素电极33形成在第三子像素区域。这里，第一子像素电极31、第二子像素电极32和第三子像素电极33可以同时地或同步地形成。第一子像素电极31、第二子像素电极32和第三子像素电极33中的每一个可以经过通孔电连接到TFT。这里的第一子像素电极31、第二子像素电极32、第三子像素电极33通常被称为阳极。
第一子像素电极31、第二子像素电极32和第三子像素电极33中的每个均可以形成透明电极(透反射式)或反射电极。当第一子像素电极31、第二子像素电极32和第三子 像素电极33形成透明电极(透反射式)电极时，可以由氧化铟锡(ITO)、氧化铟锌(IZO)、氧化锌(ZnO)、氧化铟(In 2O 3)、氧化铟镓(IGO)或氧化铝锌(AZO)形成。
当第一子像素电极31、第二子像素电极32和第三子像素电极33形成反射电极时，可由银(Ag)、镁(Mg)、铝(Al)、铂(Pt)、钯(Pd)、金(Au)、镍(Ni)、钕(Nd)、铱(Ir)、铬(Cr)、或这些材料中的任何材料混合形成的反射层，和由氧化铟锡(ITO)、氧化铟锌(IZO)、氧化锌(ZnO)、氧化铟(In2O3)等透明电极材料形成的辅助层，相叠加形成反射电极层。这里，第一子像素电极31、第二子像素电极32和第三子像素电极33的结构和材料不限于此，并且可以变化。
在形成第一子像素电极31、第二子像素电极32和第三子像素电极33之后，如图11所示，可以形成像素限定层41(PDL)。PDL可以通过具有对应每个子像素的开口(即暴露每个子像素的中心部分开口)来用于限定子像素。PDL可以由诸如聚丙烯酸酯和聚酰亚胺等材料中合适的有机材料或包括合适的无机材料的单一材料层或复合材料层形成。
PDL可以以下面的方式形成，即在基板11的整个表面上通过利用适于PDL的材料，形成用于PDL的层，以覆盖第一子像素电极31、第二子像素电极32和第三子像素电极33。然后，将将PDL层图案化，以暴露第一子像素电极31、第二子像素电极32和第三子像素电极33的中心部分。
可以蒸镀发光材料形成发光层51。蒸镀材料至少覆盖第一子像素电极31没有被PDL层覆盖的一部分，覆盖第二子像素电极32没有被PDL层覆盖的一部分，覆盖第三子像素电极33没有被PDL层覆盖的一部分。可以使用精密金属掩模板蒸镀发射红光、绿光和蓝光的发光材料。
然后，蒸镀形成覆盖第一子像素区域、第二子像素区域和第三子像素区域的对电极61。对电极61可以相对多个子像素一体形成，从而覆盖整个显示区域。对电极61通常被称为阴极。
对电极61接触显示区域外侧的电极供电线，从而电极供电线可以接收电信号。对电极61可以形成透明电极或反射电极。当对电极61形成透明电极时，对电极61可以包括通过沿朝着发光层方向沉积Li、Ca、LiF/Ca、LiF/Al、Al、Mg或这些材料中的任何材料的混合材料而形成的层以及由包括ITO、IZO、ZnO或In 2O 3的透明(透反射式)材料形成的辅助电极或汇流电极线。当对电极61形成为反射电极时，对电极61可以具有包括从Li、Ca、LiF/Ca、LiF/Al、Al、Ag和Mg中选择一种或多种材料的层。然而，对电极61的构造和材料不限于此，因此亦可以改变。
以上所述实施例的各技术特征可以进行任意的组合，为使描述简洁，未对上述实施例中的各个技术特征所有可能的组合都进行描述，然而，只要这些技术特征的组合不存在矛盾，都应当认为是本说明书记载的范围。
以上所述实施例仅表达了本申请的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对申请专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本申请构思的前提下，还可以做出若干变形和改进，这些都属于本申请的保护范围。因此，本申请专利的保护范围应以所附权利要求为准。

Claims (18)

  1. 一种显示屏，其特征在于，包括：第一区域和第二区域，所述第一区域中的实体像素密度小于所述第二区域中的实体像素密度。
  2. 根据权利要求1所述的显示屏，其特征在于，在所述第一区域中的发光单元与所述第二区域的发光单元不同；
    所述第一区域中的发光单元包括：第一子像素、第二子像素和第三子像素；第一子像素、第二子像素和第三子像素中至少一个子像素的数量与另外两个子像素的数量不相同。
  3. 根据权利要求2所述的显示屏，其特征在于，所述第一区域的发光单元数量为一个以上；
    所述第二区域的发光单元数量为一个以上。
  4. 根据权利要求3所述的显示屏，其特征在于，所述第一区域分布第一类发光单元；所述第一类发光单元呈共边的一对三角形的形状分布。
  5. 根据权利要求4所述的显示屏，其特征在于，所述第一类发光单元中，第一子像素为红色子像素且数量为一个、第二子像素为绿色子像素且数量为二个，第三子像素为蓝色子像素且数量为一个，所述一个红色子像素、所述一个蓝色子像素分别位于所述一对三角形公共边的顶点，所述二个绿色子像素分别位于所述一对三角形的剩余顶点，
    从整体上看，布设在第一区域的子像素，在横向上，红色子像素、绿色子像素、蓝色子像素各自排列成行并且相邻行的颜色不相同；在纵向上，绿色子像素排列成多个列组，每个列组包含两列，在每个列组之间以相间的方式分布着红色子像素和蓝色子像素，列组之间直接相邻。
  6. 根据权利要求3所述的显示屏，其特征在于，所述第一区域分布第二类发光单元；所述第二类发光单元呈共顶点的一对三角形的形状分布。
  7. 根据权利要求6所述的显示屏，其特征在于，所述第二类发光单元中，第一子像素为红色子像素且数量为一个、第二子像素为绿色子像素且数量为二个，第三子像素为蓝色子像素且数量为二个，所述一个红色子像素位于所述一对三角形的公共顶点，所述二个绿色子像素和二个蓝色子像素分别位于所述一对三角形中剩余的顶点，使得每个三角形的各顶点呈现不同的子像素，
    从整体上看，布设在第一区域的子像素，在横向上，蓝色子像素排列成多个行组，每个行组具有两行，在之间分布着一行红色子像素行和一行绿色子像素；相邻行组之间的距离大于红色子像素行和一行绿色子像素之间的距离；在纵向上，排布为多个相同的列组，在每个列组中，第一列为GBGB形式，第二列为BRBR形式，第三列为纯绿色子像素；相邻列组之间的距离大于列组内像素列之间的距离。
  8. 根据权利要求1至7任一项所述的显示屏，其特征在于，所述第二区域分布的发光单元包括红色子像素、绿色子像素和蓝色子像素。
  9. 一种显示屏，其特征在于，包括：第一区域和第二区域；所述第一区域的像素单元密度低于所述第二区域的像素单元密度。
  10. 根据权利要求10所述的显示屏，其特征在于，所述第一区域的最小重复单元包括：一个像素单元、一个第一空白区，所述第一空白区承载的像素单元的数量为一个。
  11. 根据权利要求10所述的显示屏，其特征在于，所述第一区域的最小重复单元包括：两个像素单元和一个第二空白区，所述第二空白区承载的像素单元的数量为两个。
  12. 根据权利要求11或12所述的显示屏，其特征在于，相邻两行或两列分布的所述最小重复单元错位排列。
  13. 根据权利要求11所述的显示屏，其特征在于，
    所述第一区域的像素单元包括：两个红色子像素、两个绿色子像素和两个蓝色子像素；从整体上看，第一区域中的子像素排布为：在纵向上，排布为多个相同的列组，在每个列 组中，第一列为BRG单元重复形式，第二列为RGB单元重复形式，第一列中相邻BRG单元之间的纵向距离大于BRG单元内子像素之间的纵向距离，第二列中相邻RGB单元之间的纵向距离大于RGB单元内子像素之间的纵向距离，相邻列组之间的距离大于列组内像素列之间的距离；
    所述第二区域的像素单元包括一个红色子像素、一个绿色子像素和一个蓝色子像素。
  14. 一种显示屏的驱动方法，其特征在于，包括：
    接收驱动信号；
    判断所述驱动信号对应驱动的子像素处于所述显示屏的第一区域还是处于第二区域，所述第一区域的实体像素密度低于所述第二区域的实体像素密度；
    当所述驱动信号对应驱动的子像素处于第一区域时，按照预设方式对所述驱动信号进行修正；
    使用修正后的所述驱动信号驱动对应的所述第一区域的子像素；
    当所述驱动信号对应驱动的子像素处于第二区域时，使用所述驱动信号驱动对应的所述第二区域的子像素。
  15. 根据权利要求15所述的方法，其特征在于，按照算术平均或加权平均的方式，对所述驱动信号进行修正。
  16. 一种显示装置，其特征在于，包括：
    显示屏；所述显示屏包括第一区域和第二区域，所述第一区域中的实体像素密度小于所述第二区域中的实体像素密度；
    屏下光敏模块，所述屏下光敏模块能感应穿过所述显示屏的第一区域而照射进来的光。
  17. 根据权利要求17所述的显示装置，其特征在于，所述屏下光敏模块包括光电传感器、和前置摄像头中的至少一种。
  18. 根据权利要求17或18所述的显示装置，其特征在于，所述屏下光敏模块嵌入所述显示屏下4mm-6mm。
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