WO2021012157A1 - 彩色显示面板及其控制方法 - Google Patents

彩色显示面板及其控制方法 Download PDF

Info

Publication number
WO2021012157A1
WO2021012157A1 PCT/CN2019/097129 CN2019097129W WO2021012157A1 WO 2021012157 A1 WO2021012157 A1 WO 2021012157A1 CN 2019097129 W CN2019097129 W CN 2019097129W WO 2021012157 A1 WO2021012157 A1 WO 2021012157A1
Authority
WO
WIPO (PCT)
Prior art keywords
pixel unit
sub
value
blue
red
Prior art date
Application number
PCT/CN2019/097129
Other languages
English (en)
French (fr)
Inventor
徐梦梦
石昌金
谢博学
Original Assignee
深圳市艾比森光电股份有限公司
惠州市艾比森光电有限公司
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 深圳市艾比森光电股份有限公司, 惠州市艾比森光电有限公司 filed Critical 深圳市艾比森光电股份有限公司
Priority to PCT/CN2019/097129 priority Critical patent/WO2021012157A1/zh
Priority to US17/052,765 priority patent/US11158235B2/en
Priority to EP19930168.0A priority patent/EP3799018A4/en
Priority to JP2020559496A priority patent/JP2021534436A/ja
Priority to CN201980048120.XA priority patent/CN112567444A/zh
Publication of WO2021012157A1 publication Critical patent/WO2021012157A1/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
    • G09G3/2007—Display of intermediate tones
    • G09G3/2074—Display of intermediate tones using sub-pixels
    • 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
    • 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]
    • 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
    • G09G2340/00—Aspects of display data processing
    • G09G2340/06—Colour space transformation
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2360/00—Aspects of the architecture of display systems
    • G09G2360/16—Calculation or use of calculated indices related to luminance levels in display data

Definitions

  • This application relates to the field of display technology, in particular to a color display panel and a control method thereof.
  • Full-color LED display has the advantages of wide display color gamut, high brightness, large viewing angle, low power consumption, and long life. It has a broad market in the fields of internal and external wall display in public places such as shopping malls, airports, and railway stations.
  • the pixel units of the current full-color display screens on the market are all composed of red, green, and blue LED chips. According to the principle of three primary colors, various colors can be generated by controlling the monochrome gray scale of the LED chip in the pixel unit, thereby displaying a color picture.
  • the white light of a full-color LED display is composed of red, green, and blue light.
  • the red, green, and blue LED chips are not in the same position, the luminous points of the red, green and blue chips are separated from each other, which will cause the display to appear The problem of uneven color mixing and color separation.
  • the present application provides a color display panel and a control method thereof to solve the problem of color separation of light mixing of three primary color display screens in the prior art.
  • this application proposes a color display panel, wherein the color display panel includes pixel units arranged in an array, and each pixel unit includes at least a red sub-pixel unit, a green sub-pixel unit, a blue sub-pixel unit, and a white sub-pixel unit. Sub-pixel unit; among them, the white light of the color display panel is realized by the white sub-pixel unit.
  • this application proposes a control method, wherein the control method is applied to the above color display panel, and the control method includes: obtaining the value of the red channel, the value of the green channel and the value of the blue channel in the input signal; Determine whether the value of the red channel, the value of the green channel and the value of the blue channel are the same; if it is determined that the value of the red channel, the value of the green channel and the value of the blue channel are the same, turn on the white sub-pixel unit in the color display panel , Turn off the red sub-pixel unit, green sub-pixel unit and blue sub-pixel unit in the color display panel; determine the gray value of the white sub-pixel unit according to the same value, and control the brightness value of the white sub-pixel unit according to the ⁇ curve, So that the color display panel displays the brightness and color corresponding to the input signal.
  • the present application discloses a color display panel, wherein the color display panel includes pixel units arranged in an array, and each pixel unit includes at least a red sub-pixel unit, a green sub-pixel unit, a blue sub-pixel unit, and a white sub-pixel unit, wherein The white light of the color display panel is realized by the white sub-pixel unit.
  • the white light of the color display panel of the present application is realized by a single white sub-pixel unit, which effectively avoids the problem of color separation during light mixing of a traditional red, green and blue display panel, and greatly improves the display effect of the display panel.
  • FIG. 1 is a schematic structural diagram of an embodiment of a color display panel of the present application
  • FIG. 2 is a schematic structural diagram of another embodiment of a color display panel of the present application.
  • FIG. 3(a) is a schematic structural diagram of an embodiment of independent packaging of red sub-pixel units in this application;
  • Fig. 3(b) is a schematic top view of the package structure in Fig. 3(a);
  • FIG. 4(a) is a schematic structural diagram of an embodiment of the overall package of the pixel unit in the present application.
  • Fig. 4(b) is a schematic top view of the package structure in Fig. 4(a);
  • FIG. 5 is a schematic flowchart of an embodiment of the control method of the present application.
  • FIG. 6 is a schematic flowchart of another embodiment of the control method of the present application.
  • FIG. 7 is a schematic flowchart of another embodiment of the control method of the present application.
  • Fig. 8 is a schematic diagram of color coordinates in another embodiment of the control method of the present application.
  • full-color LED displays have broad applications in the display field.
  • the red, green, and blue LED chips are not in the same position, and the luminous points of the red, green and blue chips are separated from each other, so the red and green in the pixel
  • the mixing of the three primary colors of blue is not uniform.
  • the color pixels displayed on the LED display are actually separated luminous points of the three primary colors of red, green and blue.
  • the human eye When the observer is far away from the screen, the human eye cannot distinguish the separated luminous points, and the display effect is not Will be affected; but when the observer is closer to the screen, when the red, green and blue chip spacing is large, the human eye can distinguish the separate red, green and blue luminous points, and each color pixel is represented as a separate RGB The light-emitting point, the color separation is more obvious, and the display effect is poor. Especially when the LED screen displays a large area of white pixels, the color separation phenomenon will be more obvious.
  • the LED chip pitch is reduced and the LED chip density is increased, the pixel color separation problem can be improved.
  • increasing the LED chip density will greatly increase the difficulty of printed circuit board layout and heat dissipation, and will also cause a sharp increase in cost.
  • a total reflection homogenization device is installed in front of the LED display, the principle of total reflection can be used to make the light emitted by the red, green and blue three-color chips in the pixel evenly mixed and improve the color separation problem; or, drag a screen cover in front of the LED display , Through the scattering unit of the screen cover, it is also conducive to the mixing of the light emitted by the RGB three primary color chips in the pixel, and the problem of color separation is improved.
  • the above methods all need to set up a functional layer (total reflection uniform light layer or scattering layer) on the LED display screen, and the process is complicated. And to achieve a better uniform light effect, a thicker functional layer is required, which greatly increases the thickness of the LED display screen.
  • the provision of a functional layer outside the LED display screen also makes subsequent maintenance more difficult.
  • the present application provides a color display panel and a control method thereof, which can solve the color separation without the above-mentioned problems, and has a simple process, does not need to increase the thickness of the display panel, and facilitates subsequent maintenance and replacement.
  • FIG. 1 is a schematic structural diagram of an embodiment of a color display panel of the present application.
  • the color display panel 10 of the present application includes pixel units 100 arranged in an array, and each pixel unit 100 includes at least a red sub-pixel unit 101, a green sub-pixel unit 102, a blue sub-pixel unit 103, and a white sub-pixel unit 104, wherein, The white light of the color display panel 10 is realized by the white sub-pixel unit 104.
  • the white sub-pixel unit 104 is turned on, and the red sub-pixel unit 101, the green sub-pixel unit 102, and the blue sub-pixel unit 103 are turned off.
  • the white light of the color display panel of the present application is realized by a single white sub-pixel unit, which effectively avoids the problem of color separation when red, green and blue are mixed into white light, and greatly improves the display effect of the display panel.
  • the color display panel of the present application has a simple process and does not need to increase the thickness of the LED display screen, which facilitates subsequent maintenance and replacement.
  • the sub-pixel units of the pixel unit may be arranged in a triangle.
  • the white pixel unit 104 is located at the center of the pixel unit 100, and the center of the pixel unit 100 may be the geometry of the pixel unit 100.
  • the red sub-pixel unit 101, the green sub-pixel unit 102, and the blue sub-pixel unit 103 are arranged in a triangle, preferably an equilateral triangle arrangement, so that the color mixing is more uniform.
  • the white sub-pixel unit 104 is located at the center of the triangle formed by the red sub-pixel unit 101, the green sub-pixel unit 102, and the blue sub-pixel unit 103.
  • the red sub-pixel unit 101, the green sub-pixel unit 102, the blue sub-pixel unit 103, and the white sub-pixel unit constitute a pixel unit 100, and a plurality of pixel units 100 are arranged in an array to constitute the color display panel 10.
  • the sub-pixels of the color display panel may also have other arrangements, such as rectangular arrangement, linear arrangement, etc.
  • the number of red, green, blue and white sub-pixels in the pixel unit can be greater than one.
  • FIG. 2 is a schematic structural diagram of another embodiment of a color display panel of the present application.
  • the pixel unit 200 includes two red sub-pixel units 2011 and 2012, a green sub-pixel unit 202, a blue sub-pixel unit 203, and a white sub-pixel unit 204.
  • the two red sub-pixel units 2011 and 2012, the green sub-pixel unit 202, the blue sub-pixel unit 203, and the white sub-pixel unit 204 are arranged in a rectangle, the white sub-pixel unit 204 is located at the center of the rectangle, and the red sub-pixel unit includes the first The red sub-pixel unit 2011 and the second red sub-pixel unit 2012, the first red sub-pixel unit 2011 and the second red sub-pixel unit 2012 are symmetrically distributed compared to the white sub-pixel unit 204.
  • the pixel unit of the present application can adopt DIP (dual inline-pin package) package, SMD (Surface Mounted Devices) package, COB (Chips on Board, chip on board package) Packaging or other forms of packaging independent red, green, blue and white sub-pixel units may also adopt DIP packaging, SMD packaging, COB packaging or other forms of integral packaging.
  • DIP dual inline-pin package
  • SMD Surface Mounted Devices
  • COB Chip on Board, chip on board package
  • Packaging or other forms of packaging independent red, green, blue and white sub-pixel units may also adopt DIP packaging, SMD packaging, COB packaging or other forms of integral packaging.
  • FIG. 3(a) is a schematic structural diagram of an embodiment of independent packaging of red sub-pixel units in the present application
  • FIG. 3(b) is a schematic top view of the corresponding packaging structure.
  • the lamp beads may include a red light-emitting chip 311, a bracket 312, and an outer cover 313.
  • the bracket 312 and the outer cover 313 form a closed space
  • the red light emitting chip 311 is located in the closed space
  • the red light emitting chip 311 may be a red LED bare chip
  • the red light emitting chip 311 emits light to form a red sub-pixel unit.
  • the bracket 312 may include a base and a pin group.
  • the base is used to hold the red light-emitting chip 311, and the pin group is used to connect the red light-emitting chip 311 to an external circuit.
  • the outer cover 313 may be an encapsulating glue structure, and the encapsulating glue structure may be a transparent optical glue structure such as epoxy resin or silica gel.
  • the outer cover 313 may also include scattering particles and/or colorants. The scattering particles are used to control the light-emitting angle of the chip. The colorants can absorb visible light of other colors except red light, which can improve the contrast of the screen.
  • the packaging structure of the blue lamp bead and the packaging structure of the green lamp bead are similar to the packaging structure of the red lamp bead, and the red light-emitting chip and toner can be replaced with the corresponding color light-emitting chip and toner, which will not be repeated here.
  • the light-emitting chip inside the white lamp bead can be a blue light-emitting chip or an ultraviolet light-emitting chip or other color light-emitting chips.
  • the outer cover of the white lamp bead contains phosphors, which can absorb the light-emitting chips. Emit the light and convert it to white light.
  • the inside of the white lamp bead may contain a blue light-emitting chip and YAG:Ce phosphor, and the YAG:Ce phosphor is used to convert blue light into white light.
  • FIG. 4(a) is a schematic structural diagram of an embodiment of the overall package of the pixel unit in the present application
  • FIG. 4(b) is a schematic top view of the corresponding packaging structure.
  • This embodiment adopts DIP overall package.
  • the pixel unit can be packaged as a lamp bead as a whole, and the lamp bead includes at least four light-emitting chips 401, a bracket 402 and an outer cover 403.
  • the bracket 402 and the outer cover 403 form a closed space, and the light emitting chip 401 is located in the closed space.
  • the light-emitting chip 401 may be a bare LED chip.
  • the light emitting chip 401 includes a red light emitting chip, a green light emitting chip, a blue light emitting chip, and an ultraviolet light emitting chip.
  • the bracket 402 may include a base and a pin group.
  • the base is used to hold a red light-emitting chip, a green light-emitting chip, a blue light-emitting chip, and an ultraviolet light-emitting chip.
  • the chip, the blue light-emitting chip and the ultraviolet light-emitting core are connected to an external circuit.
  • the outer cover 403 may be an encapsulating glue structure, and the encapsulating glue structure may be a transparent optical glue structure such as epoxy resin or silica gel.
  • the outer cover 403 may also include phosphors, scattering particles and/or colorants. The scattering particles are used to control the light output angle of the chip. The colorants can absorb visible light of other colors except red light, which can improve the contrast of the screen.
  • the red light-emitting chip emits light to form a red sub-pixel unit
  • the green light emits light to form a green sub-pixel unit
  • the blue light-emitting chip emits light to form a blue sub-pixel unit
  • the ultraviolet light-emitting chip emits ultraviolet light
  • the phosphor in the cover 403 absorbs ultraviolet light and converts the ultraviolet light.
  • the light is converted into white light to form a white sub-pixel unit.
  • the phosphor does not absorb the three primary colors of red, green and blue, which can ensure the chromaticity of the screen.
  • this application also provides a way to determine the maximum brightness of each sub-pixel in an RGBW color display panel:
  • the color coordinates of the green sub-pixel unit and the color coordinates of the blue sub-pixel unit set the maximum brightness of the red sub-pixel, the maximum brightness of the green sub-pixel, and the maximum brightness of the blue sub-pixel.
  • the maximum brightness of the red sub-pixel, the maximum brightness of the green sub-pixel, and the maximum brightness of the blue sub-pixel are mainly determined by the following formula (1):
  • z r 1-x r -y r
  • z g 1-x g -y g
  • z b 1-x b -y b
  • z w 1-x w -y w .
  • (x w , y w ) is the white sub-pixel unit color coordinates, L wm is the maximum brightness of white light; (x r , y r ) is the red sub-pixel unit color coordinates, and L rm is the maximum red light Brightness; (x g , y g ) is the color coordinate of the green sub-pixel unit, L gm is the maximum brightness of the green light; (x b , y b ) is the color coordinate of the blue sub-pixel unit, and L bm is the maximum brightness of the blue light.
  • FIG. 5 is a schematic flowchart of an embodiment of the control method of the present application.
  • the control method is applied to the RGB color system and includes the following steps:
  • the RGB color model uses the RGB model to assign a value in the range of 0 to 255 for the RGB component of each pixel in the image.
  • each RGB component can use values from 0 (black) to 255 (white).
  • RGB is the color representing the three channels of red, green, and blue, and each color channel corresponds to a value.
  • the color display panel includes a controller, and the controller obtains the value of the red channel, the value of the green channel and the value of the blue channel in the input signal.
  • S52 Determine whether the value of the red channel, the value of the green channel and the value of the blue channel are the same.
  • the controller judges whether the value of the red channel, the value of the green channel and the value of the blue channel are the same, and if so, execute step S53.
  • S53 Turn on the white sub-pixel unit in the color display panel, and turn off the red, green, and blue sub-pixel units in the color display panel.
  • the controller determines that the value of the red channel, the value of the green channel and the value of the blue channel are the same, it means that the color to be displayed in the input signal is white, and the white sub-pixel unit in the color display panel is turned on, and the color display is turned off The red sub-pixel unit, green sub-pixel unit, and blue sub-pixel unit in the panel.
  • the controller of the color display panel controls a single white sub-pixel unit to emit and display white light, thereby avoiding the phenomenon of color separation due to the mixing of the three primary colors of red, green and blue to form white light.
  • S54 Determine the gray value of the white sub-pixel unit according to the same value, and control the brightness value of the white sub-pixel unit according to the ⁇ curve, so that the color display panel displays the brightness and color corresponding to the input signal.
  • the color display panel in this embodiment can select the value of any channel of the input signal red, green and blue to determine the gray value of the white sub-pixel unit.
  • the controller may determine the gray value of the white sub-pixel unit according to the value of the red channel, that is, set the gray value of the white sub-pixel unit to the value of the red sub-pixel.
  • the controller controls the brightness value of the white sub-pixel unit according to the ⁇ curve to correct the display effect, so that the color display panel displays the brightness and color corresponding to the input signal.
  • FIG. 6 is a schematic flowchart of another embodiment of the control method of the present application. If the steps in this embodiment are the same as the above steps, they will not be repeated. Specific steps are as follows:
  • S62 Determine whether the value of the red channel, the value of the green channel and the value of the blue channel are the same.
  • the following steps S631 to S632 are performed; if it is determined that the value of the red channel, the value of the green channel and the value of the blue channel are different, The following steps S633 to S634 are executed.
  • S631 Turn on the white sub-pixel unit in the color display panel, and turn off the red, green, and blue sub-pixel units in the color display panel.
  • S632 Determine the gray value of the white sub-pixel unit according to the same value, and control the brightness value of the white sub-pixel unit according to the ⁇ curve, so that the color display panel displays the brightness and color corresponding to the input signal.
  • Steps S631 to S632 can refer to the above steps S53 to S54, which will not be repeated here.
  • S633 Turn off the white sub-pixel unit in the color display panel, and turn on the red sub-pixel unit, green sub-pixel unit, and blue sub-pixel unit in the color display panel.
  • the controller determines that the value of the red channel, the value of the green channel and the value of the blue channel are not the same, it can be concluded that the color to be displayed in the input signal is not white at this time, so the controller turns off the white sub-pixel in the color display panel Unit, turn on the red sub-pixel unit, green sub-pixel unit, and blue sub-pixel unit in the color display panel.
  • S634 Determine the gray value of the red sub-pixel unit according to the value of the red channel, determine the gray value of the green sub-pixel unit according to the value of the green channel, determine the gray value of the blue sub-pixel unit according to the value of the blue channel, and The brightness value of the red sub-pixel unit, the brightness value of the green sub-pixel unit, and the brightness value of the blue sub-pixel unit are controlled according to the ⁇ curve, so that the color display panel displays the brightness and color corresponding to the input signal.
  • the controller determines the gray value of the red sub-pixel unit according to the value of the red channel, determines the gray value of the green sub-pixel unit according to the value of the green channel, and determines the gray value of the blue sub-pixel unit according to the value of the blue channel, and
  • the ⁇ curve is used to compensate the brightness deviation in the color display panel, so that the color display panel displays the brightness and color corresponding to the input signal.
  • this application also provides another embodiment of the control method. Please refer to FIG. 7, which is a schematic flowchart of another embodiment of the control method of the present application. If the steps in this embodiment are the same as the above steps, they will not be repeated. Specific steps are as follows:
  • S72 Determine whether the value of the red channel, the value of the green channel and the value of the blue channel are the same.
  • S731 Turn on the white sub-pixel unit in the color display panel, and turn off the red sub-pixel unit, green sub-pixel unit, and blue sub-pixel unit in the color display panel.
  • S732 Determine the gray value of the white sub-pixel unit according to the same value, and control the brightness value of the white sub-pixel unit according to the ⁇ curve, so that the color display panel displays the brightness and color corresponding to the input signal.
  • S710 to S732 in this embodiment are similar to S610 to S632 in the above steps, and will not be repeated here. For details, please refer to the above steps.
  • S733 Determine whether the RGB value of the input signal can be obtained by mixing any of the monochromatic light of white and red, green and blue. If so, turn on the white sub-pixel unit and the corresponding monochromatic photon pixel unit, and turn off the other two monochromatic photons Pixel unit.
  • the controller determines the brightness L r , L g and L b corresponding to the red, green and blue sub-pixels according to the ⁇ curve, and then calculates the color coordinates (x i , y i ) and brightness L i corresponding to the input signal according to the following formula 2 .
  • the controller judges whether the corresponding color coordinates (x i , y i ) of the input signal is located on the connection line between the white sub-pixel coordinates and the red, green and blue coordinates in the color coordinates, that is, judges the color coordinates (x i , y i ) Whether it is located on the line segments RW, BW, and GW in FIG. 8, where FIG. 8 is a schematic diagram of color coordinates in this application.
  • z r 1-x r -y r
  • z g 1-x g -y g
  • z b 1-x b -y b
  • z i 1-x i -y i .
  • the color display panel controls the brightness of the white sub-pixel and the X-color sub-pixel respectively according to L w and L x , namely The brightness and color corresponding to the input signal can be realized.
  • the color originally required to be mixed by RGB three-color sub-pixels can be achieved by mixing white and X-color sub-pixel units, thereby improving the color separation in the three display panels The phenomenon.
  • the color display panel determines that the color coordinates (x i , y i ) corresponding to the output signal are not on the line segments RW, BW, GW in Figure 8, it means that the RGB value of the input signal cannot be mixed in white and red, green and blue. Of any monochromatic light.
  • the color display panel controls the white sub-pixel unit to be turned off, the red sub-pixel unit, the green sub-pixel unit and the blue sub-pixel unit are turned on, and the gray values of the red, green and blue sub-pixel units are determined according to the RGB value in the input signal , And further control the brightness values of the red sub-pixel unit, the green sub-pixel unit and the blue sub-pixel unit respectively according to the ⁇ curve to display the color and brightness corresponding to the input signal.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Control Of El Displays (AREA)
  • Led Device Packages (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

一种彩色显示面板（10）及其控制方法，其中彩色显示面板（10）包括阵列排布的像素单元（100），每个像素单元（100）至少包括红色子像素单元（101）、绿色子像素单元（102）、蓝色子像素单元（103）和白色子像素单元（104）；其中，彩色显示面板（10）的白光由白色子像素单元（104）实现。彩色显示面板（10）中的白光由单一的白色子像素单元（104）发光实现，可以有效地避免传统红绿蓝三色显示面板中混光出现颜色分离的问题，改善显示面板的显示效果。

Description

彩色显示面板及其控制方法 【技术领域】
本申请涉及显示技术领域，特别是涉及彩色显示面板及其控制方法。
【背景技术】
全彩LED显示屏具有显示色域广、亮度高、可视角大、功耗低、寿命长等优点，在商场、机场、火车站等公共场所的内外墙体显示等领域具有广阔的市场。目前市场上的全彩显示屏的像素单元均由红、绿、蓝三基色LED芯片组成。根据三基色原理，通过控制像素单元中LED芯片的单色灰度级可产生各种颜色，从而显示彩色画面。
全彩LED显示屏的白光由红光、绿光、蓝光混光而成，但由于红绿蓝三种LED芯片不在同一位置，红绿蓝三基色芯片发光点相互分离，因此会导致显示屏出现混色不均匀，颜色分离的问题。
【发明内容】
本申请提供彩色显示面板及其控制方法，以解决现有技术中三基色显示屏混光颜色分离的问题。
为解决上述技术问题，本申请提出一种彩色显示面板，其中彩色显示面板包括阵列排布的像素单元，每个像素单元至少包括红色子像素单元、绿色子像素单元、蓝色子像素单元和白色子像素单元；其中，彩色显示面板的白光由白色子像素单元实现。
为解决上述技术问题，本申请提出一种控制方法，其中控制方法应用于上述彩色显示面板，所述控制方法包括：获取输入信号中红色通道的数值、绿色通道的数值和蓝色通道的数值；判断红色通道的数值、绿色通道的数值和蓝色通道的数值是否相同；若判断出红色通道的数值、绿色通道的数值和蓝色通道的数值相同时，开启彩色显示面板中的白色子像素单元，关闭彩色显示面板中的红色子像素单元、绿色子像素单元和蓝色子像素单元；根据相同的数值确定白色子像素单元的灰度值，并根据γ曲线控制白色子像素单元的亮度值，以使彩色显示面板显示与输入信号对应的亮度和颜色。
本申请公开了一种彩色显示面板，其中彩色显示面板包括阵列排布的像素 单元，每个像素单元至少包括红色子像素单元、绿色子像素单元、蓝色子像素单元和白色子像素单元，其中彩色显示面板的白光由白色子像素单元实现。本申请的彩色显示面板的白光由单一的白色子像素单元实现，有效避免了传统红绿蓝三色显示面板混光时出现颜色分离的问题，极大地改善了显示面板的显示效果。
【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是本申请彩色显示面板的一实施例结构示意图；
图2是本申请彩色显示面板另一实施例的结构示意图；
图3(a)是本申请中红色子像素单元独立封装一实施例的结构示意图；
图3(b)是图3(a)中封装结构的俯视示意图；
图4(a)是本申请中像素单元整体封装一实施例的结构示意图；
图4(b)是图4(a)中封装结构的俯视示意图；
图5是本申请控制方法一实施例的流程示意图；
图6是本申请控制方法另一实施例的流程示意图；
图7是本申请控制方法又一实施例的流程示意图；
图8是本申请控制方法又一实施例中颜色坐标示意图。
【具体实施方式】
为使本领域的技术人员更好地理解本申请的技术方案，下面结合附图和具体实施方式对发明所提供的彩色显示面板及其控制方法进一步详细描述。
目前全彩LED显示屏在显示领域具有广阔的应用，在LED显示屏的像素单元中，红绿蓝三色LED芯片不在同一位置，红绿蓝三基色芯片发光点相互分离，因而像素中红绿蓝三基色混合不均匀，LED显示屏显示的彩色像素事实上是分离的红绿蓝三基色的发光点，当观察者与屏幕距离较远时，人眼无法分辨分离的发光点，显示效果不会受到影响；但当观察者距离屏幕比较近时，红绿蓝三 基色芯片间距较大时，人眼可以分辨出分离的红绿蓝三基色发光点，每个彩色像素均表现为分离的RGB发光点，色彩分离较明显，显示效果较差。尤其在LED屏幕显示大面积的白色像素时，色彩分离现象会更加明显。
为此，若减小LED芯片间距，增加LED芯片的密度可改善像素色彩分离问题，但增大LED芯片密度会大大增加印刷电路板排布和散热的难度，同时也会使得成本急剧增加。
若在LED显示屏前设置全反射匀光装置，可以利用全反射原理，使像素中红绿蓝三基色芯片发出的光混合均匀，改善颜色分离问题；或者，拖在LED显示屏前设置屏幕罩，通过屏幕罩的散射单元，也有利于像素中RGB三基色芯片发出光的混合，改善颜色分离的问题。但上述方法都需要在LED显示屏上设置功能层(全反射匀光层或散射层)，工艺复杂。并且要实现较好的匀光效果需要较厚的功能层，大大增加了LED显示屏的厚度，此外，在LED显示屏外设置功能层也使得后续的维修难度增大。
基于此，本申请提供一种彩色显示面板及其控制方法，在解决颜色分离的同时也不会出现上述问题，并且工艺简单，不需要增加显示面板的厚度，且有利于后续维修更换。
请参阅图1，图1是本申请彩色显示面板的一实施例结构示意图。本申请的彩色显示面板10包括阵列排布的像素单元100，每个像素单元100至少包括红色子像素单元101、绿色子像素单元102、蓝色子像素单元103和白色子像素单元104，其中，彩色显示面板10的白光由白色子像素单元104实现。当彩色显示面板10需要显示白光时，则打开白色子像素单元104，关闭红色子像素单元101、绿色子像素单元102和蓝色子像素单元103。
通过上述方式，本申请的彩色显示面板的白光由单一的白色子像素单元实现，有效避免了红绿蓝混合成白光时出现颜色分离的问题，极大地改善了显示面板的显示效果。并且，本申请的彩色显示面板工艺简单，不需要增加LED显示屏的厚度，有利于后续维修更换。
在本实施例中，像素单元的子像素单元可以是三角形排列，如图1所示，白色像素单元104位于所述像素单元100的中心位置，像素单元100的中心位置可以为像素单元100的几何中心位置或者红色子像素单元101、绿色子像素单元102和蓝色子像素单元103所形成图形的中心位置。红色子像素单元101、绿色子像素单元102和蓝色子像素单元103呈三角形排列，优选的可以是为等边 三角形排列，使得混色更加均匀。白色子像素单元104位于红色子像素单元101、绿色子像素单元102和蓝色子像素单元103所构成的三角形的中心位置。
上述红色子像素单元101、绿色子像素单元102、蓝色子像素单元103和白色子像素单元构成一个像素单元100，多个像素单元100阵列排布构成彩色显示面板10。
在其他实施例中，彩色显示面板的子像素还可以有其他的排列方式，例如矩形排列、线性排列等。
为满足不同的显示效果要求，在像素单元中红绿蓝白子像素的个数可大于1。请参阅图2，图2是本申请彩色显示面板另一实施例的结构示意图。在本实施例中，像素单元200包括两个红色子像素单元2011和2012、绿色子像素单元202、蓝色子像素单元203和白色子像素单元204。两个红色子像素单元2011和2012、绿色子像素单元202、蓝色子像素单元203和白色子像素单元204呈矩形排列，白色子像素单元204位于矩形的中心位置，红色子像素单元包括第一红色子像素单元2011和第二红色子像素单元2012，第一红色子像素单元2011和第二红色子像素单元2012相较于白色子像素单元204对称分布。
在其他的实施例中，为了实现其他的显示效果，本领域的技术人员也可以想到设置其他颜色的子像素单元的数量大于1或设置不同的排列方式。
此外，本申请的像素单元可以采用DIP(dual inline-pin package，双列直插式封装)封装、SMD(Surface Mounted Devices，表面贴装器件)封装、COB(Chips on Board，板上芯片封装)封装或者其他形式封装独立的红绿蓝白四个子像素单元，也可以是红绿蓝白四个子像素单元采用DIP封装、SMD封装、COB封装或者其他形式整体封装。
请参阅图3(a)和图3(b)，图3(a)是本申请中红色子像素单元独立封装一实施例的结构示意图，图3(b)是对应封装结构的俯视示意图。本实施例采用DIP独立封装，红色子像素单元为独立封装的红色灯珠。灯珠可以包括红色发光芯片311、支架312和外罩313。支架312和外罩313形成密闭空间，红色发光芯片311位于密闭空间内，红色发光芯片311可以为红色LED裸芯片，红色发光芯片311发光形成红色子像素单元。
在本实施例中，支架312可以包括底座和引脚组，底座用于承放红色发光芯片311，引脚组用于将红色发光芯片311连接外部电路。外罩313可以为封装胶结构，封装胶结构可以为环氧树脂或硅胶等透明光学胶结构。外罩313中还 可以包括散射颗粒和/或色剂，散射颗粒用于对芯片出光角度调控，色剂可吸收除红光外的其他颜色的可见光，可提高屏幕对比度。
蓝色灯珠的封装结构和绿色灯珠的封装结构均与红色灯珠的封装结构相似，将红色发光芯片和色剂换成相应颜色的发光芯片和色剂可以实现，在此不再赘述。
需要说明的是，对于白色灯珠，白色灯珠里面的发光芯片可以为蓝色发光芯片或者紫外发光芯片或其他颜色的发光芯片，白色灯珠的外罩中包含荧光粉，荧光粉可吸收发光芯片发出的光并将其转换为白光。在本实施例中，白色灯珠里面为可以为蓝色发光芯片和YAG:Ce荧光粉，YAG:Ce荧光粉用于将蓝光转换为白光。
请参阅图4(a)和图4(b)，图4(a)是本申请中像素单元整体封装一实施例的结构示意图，图4(b)是对应封装结构的俯视示意图。本实施例采用DIP整体封装。像素单元可以整体封装成灯珠，灯珠包括至少四个发光芯片401、支架402和外罩403。支架402和外罩403形成密闭空间，发光芯片401位于密闭空间内。发光芯片401可以为LED裸芯片。发光芯片401包括红色发光芯片、绿色发光芯片、蓝色发光芯片和紫外发光芯片。
在本实施例中，支架402可以包括底座和引脚组，底座用于承放红色发光芯片、绿色发光芯片、蓝色发光芯片和紫外发光芯片，引脚组用于将红色发光芯片、绿色发光芯片、蓝色发光芯片和紫外发光芯连接外部电路。外罩403可以为封装胶结构，封装胶结构可以为环氧树脂或硅胶等透明光学胶结构。外罩403中还可以包括荧光粉、散射颗粒和/或色剂，散射颗粒用于对芯片出光角度调控，色剂可吸收除红光外的其他颜色的可见光，可提高屏幕对比度。
红色发光芯片发光形成红色子像素单元，绿色光发光形成绿色子像素单元，蓝色发光芯片发光形成蓝色子像素单元，紫外发光芯片发出紫外光，外罩403中的荧光粉吸收紫外光并将紫外光转换为白光，形成白色子像素单元。优选的，荧光粉不吸收红绿蓝三基色光，可以保证屏幕的色彩度。
此外，本申请还提供一种确定RGBW彩色显示面板中各个子像素最大亮度的方式：
将彩色显示面板中白色子像素单元的色坐标和最大亮度设置为彩色显示面板的白平衡坐标以及白光的最大亮度；根据白平衡坐标、白色子像素的最大亮度、红色子像素单元的色坐标、绿色子像素单元的色坐标和蓝色子像素单元的 色坐标设置红色子像素的最大亮度、绿色子像素的最大亮度和所述蓝色子像素的最大亮度。
在本实施例中，主要通过下述公式(1)确定红色子像素的最大亮度、绿色子像素的最大亮度和蓝色子像素的最大亮度：
Figure PCTCN2019097129-appb-000001
其中z r＝1-x r-y r,z g＝1-x g-y g,z b＝1-x b-y b,z w＝1-x w-y w。
在上述公式中，(x w,y w)为白色子像素单元色坐标，L wm为白光的最大亮度；(x r,y r)为红色子像素单元色坐标，L rm为红光的最大亮度；(x g,y g)为绿色子像素单元色坐标，L gm为绿光的最大亮度；(x b,y b)为蓝色子像素单元色坐标，L bm为蓝光的最大亮度。
本申请还提出一种控制方法，应用于上述彩色显示面板，请参阅图5，图5是本申请控制方法一实施例的流程示意图，其中控制方法应用于RGB颜色系统，包括以下步骤：
S51：获取输入信号中红色通道的数值、绿色通道的数值和蓝色通道的数值。
RGB色彩模式使用RGB模型为图像中每一个像素的RGB分量分配一个0～255范围内的数值。在RGB模式下，每种RGB成分都可使用从0(黑色)到255(白色)的值。RGB即是代表红、绿、蓝三个通道的颜色，每一个颜色通道都对应一个数值。
彩色显示面板包括控制器，控制器获取输入信号中红色通道的数值、绿色通道的数值和蓝色通道的数值。
S52：判断红色通道的数值、绿色通道的数值和蓝色通道的数值是否相同。
控制器判断红色通道的数值、绿色通道的数值和蓝色通道的数值是否相同，若是，则执行步骤S53。
S53：开启彩色显示面板中的白色子像素单元，关闭彩色显示面板中的红色子像素单元、绿色子像素单元和蓝色子像素单元。
当控制器判断出红色通道的数值、绿色通道的数值和蓝色通道的数值相同时，说明输入信号中的要显示的颜色为白色，则开启彩色显示面板中的白色子 像素单元，关闭彩色显示面板中的红色子像素单元、绿色子像素单元和蓝色子像素单元。本实施例中彩色显示面板的控制器控制单一的白色子像素单元发光显示白光，从而避免由于红绿蓝三基色混色形成白光而出现的颜色分离的现象。
S54：根据相同的数值确定白色子像素单元的灰度值，并根据γ曲线控制白色子像素单元的亮度值，以使彩色显示面板显示与输入信号对应的亮度和颜色。
由于红色通道、绿色通道和蓝色通道的数值都相同，因此在本实施例中的彩色显示面板可以选择输入信号红绿蓝中任意一个通道的数值确定白色子像素单元的灰度值。在本实施例中，控制器可以根据红色通道的数值确定白色子像素单元的灰度值，即将白色子像素单元的灰度值设置成红色子像素的数值。
进一步的，控制器根据γ曲线控制白色子像素单元的亮度值，矫正显示效果，以使彩色显示面板显示与输入信号对应的亮度和颜色。
请参阅图6，图6是本申请控制方法另一实施例的流程示意图。本实施例中的步骤若与上述步骤相同的地方，不再赘述。具体步骤如下：
S61：获取输入信号中红色通道的数值、绿色通道的数值和蓝色通道的数值。
S62：判断红色通道的数值、绿色通道的数值和蓝色通道的数值是否相同。
若判断出红色通道的数值、绿色通道的数值和蓝色通道的数值相同，则执行下述步骤S631～S632；若判断出红色通道的数值、绿色通道的数值和蓝色通道的数值不相同，则执行下述步骤S633～S634。
S631：开启彩色显示面板中的白色子像素单元，关闭彩色显示面板中的红色子像素单元、绿色子像素单元和蓝色子像素单元。
S632：根据相同的数值确定白色子像素单元的灰度值，并根据γ曲线控制白色子像素单元的亮度值，以使彩色显示面板显示与输入信号对应的亮度和颜色。
步骤S631～S632可参考上述步骤S53～S54，在此不再赘述。
S633：关闭彩色显示面板中的白色子像素单元，开启彩色显示面板中的红色子像素单元、绿色子像素单元和蓝色子像素单元。
控制器判断出红色通道的数值、绿色通道的数值和蓝色通道的数值不相同，则可以得出此时输入信号中需要显示的颜色不是白色，因此控制器关闭彩色显示面板中的白色子像素单元，开启彩色显示面板中的红色子像素单元、绿色子像素单元和蓝色子像素单元。
S634：根据红色通道的数值确定红色子像素单元的灰度值，根据绿色通道 的数值确定绿色子像素单元的灰度值，根据蓝色通道的数值确定蓝色子像素单元的灰度值，并根据γ曲线控制红色子像素单元的亮度值、绿色子像素单元的亮度值和蓝色子像素单元的亮度值，以使彩色显示面板显示与输入信号对应的亮度和颜色。
控制器根据红色通道的数值确定红色子像素单元的灰度值，根据绿色通道的数值确定绿色子像素单元的灰度值，根据蓝色通道的数值确定蓝色子像素单元的灰度值，并通过γ曲线补偿彩色显示面板中的亮度偏差，以使彩色显示面板显示与输入信号对应的亮度和颜色。具体的方法和原理已在上述步骤S54中说明，在此不再赘述。
为进一步改善彩色显示面板的显示效果，本申请还提供控制方法的又一实施例。请参阅图7，图7是本申请控制方法又一实施例的流程示意图。本实施例中的步骤若与上述步骤相同的地方，不再赘述。具体步骤如下：
S71：获取输入信号中红色通道的数值、绿色通道的数值和蓝色通道的数值。
S72：判断红色通道的数值、绿色通道的数值和蓝色通道的数值是否相同。
S731：开启彩色显示面板中的白色子像素单元，关闭彩色显示面板中的红色子像素单元、绿色子像素单元和蓝色子像素单元。
S732：根据相同的数值确定白色子像素单元的灰度值，并根据γ曲线控制白色子像素单元的亮度值，以使彩色显示面板显示与输入信号对应的亮度和颜色。
本实施例中S710～S732与上述步骤中的S610～S632相类似，在此不再赘述，具体可参阅上述步骤。
S733：判断输入信号的RGB值是否可以通过混合白色和红绿蓝中的任一单色光得出，若是，则开启白色子像素单元和对应单色光子像素单元，关闭其余两个单色光子像素单元。
控制器则根据γ曲线，确定红绿蓝子像素对应的亮度L r、L g和L b，然后根据下述公式2计算得到输入信号对应的色坐标(x i,y i)和亮度L i。控制器判断输入信号的对应的色坐标(x i,y i)是否位于颜色坐标中白色子像素坐标和红绿蓝色坐标的连线上，即判断输入信号对应的色坐标(x i,y i)是否位于图8中的线段RW、BW、GW上，其中图8为本申请中颜色坐标示意图。
公式2：
Figure PCTCN2019097129-appb-000002
其中，z r＝1-x r-y r,z g＝1-x g-y g,z b＝1-x b-y b,z i＝1-x i-y i。
若判断输入信号对应的色坐标(xi,yi)位于图8中的线段RW、BW、GW上，则表明输入信号的颜色可通过白色子像素单元和X色(红绿蓝中的任意一个)子像素单元混光实现。根据下述公式3计算需要得到的白色子像素单元的亮度L w和X色子像素单元的亮度L x，彩色显示面板根据L w和L x分别控制白色子像素和X色子像素的亮度即可实现与输入信号对应的亮度和颜色。此时，与RGB三色显示的显示面板相比，原本需要RGB三色子像素混光得到的颜色可以通过混个白色和X色子像素单元实现，由此可改善三个显示面板中颜色分离的现象。
公式3：
Figure PCTCN2019097129-appb-000003
其中，z x＝1-x x-y x,z w＝1-x w-y w。
S734：若判断出输入信号的RGB值不可以通过混合白色和红绿蓝中的任一单色光得出，则关闭宝色子像素单元，开启红色子像素单元、绿色子像素单元和蓝色子像素单元。
若彩色显示面板判断出输出信号对应的色坐标(x i,y i)不位于图8中的线段RW、BW、GW上，即表明输入信号的RGB值不可以通过混合白色和红绿蓝中的任一单色光得出。此时，彩色显示面板控制白色子像素单元关闭，红色子像素单元、绿色子像素单元和蓝色子像素单元开启，并根据输入信号中的RGB值确定红绿蓝三个子像素单元的灰度值，进而根据γ曲线分别控制红色子像素单元、绿色子像素单元和蓝色子像素单元的亮度值，以显示与输入信号对应的颜色和亮度。
以上所述仅为本申请的实施方式，并非因此限制本申请的专利范围，凡是利用本申请说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其他相关的技术领域，均同理包括在本申请的专利保护范围内。

Claims (11)

  1. 一种彩色显示面板，其中，彩色显示面板包括阵列排布的像素单元，每个所述像素单元至少包括红色子像素单元、绿色子像素单元、蓝色子像素单元和白色子像素单元；其中，所述彩色显示面板的白光由所述白色子像素单元实现。
  2. 根据权利要求1所述的彩色显示面板，其中，所述红色子像素单元、所述绿色子像素单元、所述蓝色子像素单元和所述白色子像素单元采用三角形排列、矩形排列或线性排列。
  3. 根据权利要求1所述的彩色显示面板，其中，所述红色子像素单元、所述绿色子像素单元、所述蓝色子像素单元和所述白色子像素单元均为独立封装的灯珠，所述封装采用双列直插式封装、表面贴装器件封装或板上芯片封装中的一种。
  4. 根据权利要求1所述的彩色显示面板，其中，所述像素单元整体封装成灯珠，所述封装采用双列直插式封装、表面贴装器件封装或板上芯片封装中的一种。
  5. 根据权利要求3所述的彩色显示面板，其中，所述白色灯珠设置有荧光粉和发光芯片，所述发光芯片包括蓝色发光芯片或紫外发光芯片，所述荧光粉用于将所述蓝色发光芯片发出的蓝光或者紫外发光芯片发出的紫外光转换成白光。
  6. 根据权利要求4所述的彩色显示面板，其中，所述灯珠设置有荧光粉和发光芯片，所述发光芯片包括红色发光芯片、绿色发光芯片、蓝色发光芯片和紫外发光芯片，所述荧光粉覆盖所述红色发光芯片、所述绿色发光芯片、所述蓝色发光芯片和所述紫外发光芯片，所述荧光粉用于将所述紫外发光芯片发出的紫外光转换成白光，且所述荧光粉不吸收所述红色发光芯片、所述绿色发光芯片和所述蓝色发光芯片发出的光。
  7. 根据权利要求1所述的彩色显示面板，其中，将所述彩色显示面板中所述白色子像素单元的色坐标和最大亮度设置为所述彩色显示面板的白平衡坐标以及白光的最大亮度；
    根据所述白平衡坐标、所述白色子像素的最大亮度、红色子像素单元的色 坐标、绿色子像素单元的色坐标和蓝色子像素单元的色坐标设置所述红色子像素的最大亮度、所述绿色子像素的最大亮度和所述蓝色子像素的最大亮度。
  8. 一种控制方法，其中，所述控制方法应用于权利要求1-7任意一项所述的彩色显示面板，所述控制方法包括：
    获取输入信号中红色通道的数值、绿色通道的数值和蓝色通道的数值；
    判断所述红色通道的数值、所述绿色通道的数值和所述蓝色通道的数值是否相同；
    若判断到所述红色通道的数值、所述绿色通道的数值和所述蓝色通道的数值相同时，开启所述彩色显示面板中的所述白色子像素单元，关闭所述彩色显示面板中的所述红色子像素单元、所述绿色子像素单元和所述蓝色子像素单元；
    根据相同的数值确定所述白色子像素单元的灰度值，并根据γ曲线控制所述白色子像素单元的亮度值，以使所述彩色显示面板显示与所述输入信号对应的亮度和颜色。
  9. 根据权利要求8所述的控制方法，其中，所述控制方法还包括：
    若判断到所述红色通道的数值、所述绿色通道的数值和所述蓝色通道的数值不相同时，关闭所述彩色显示面板中的所述白色子像素单元，开启所述彩色显示面板中的所述红色子像素单元、所述绿色子像素单元和所述蓝色子像素单元；
    根据所述红色通道的数值确定所述红色子像素单元的灰度值，根据所述绿色通道的数值确定所述绿色子像素单元的灰度值，根据所述蓝色通道的数值确定所述蓝色子像素单元的灰度值，并根据所述γ曲线控制所述红色子像素单元的亮度值、所述绿色子像素单元的亮度值和所述蓝色子像素单元的亮度值，以使所述彩色显示面板显示与所述输入信号对应的亮度和颜色。
  10. 根据权利要求8所述的控制方法，其中，所述方法包括：
    若判断到所述红色通道的数值、所述绿色通道的数值和所述蓝色通道的数值不相同时，进一步判断所述输入信号的RGB值是否可以通过混合白色和红绿蓝中的任一单色光得出，若是，则开启所述白色子像素单元和对应的单色光子像素单元，关闭其余两个单色光子像素单元。
  11. 根据权利要求10所述的控制方法，其中，所述控制方法包括：
    若判断出所述输入信号的RGB值不可以通过混合白色和红绿蓝中的任一单色光得出，则关闭所述白色子像素单元，开启所述红色子像素单元、所述绿色 子像素单元和所述蓝色子像素单元。
PCT/CN2019/097129 2019-07-22 2019-07-22 彩色显示面板及其控制方法 WO2021012157A1 (zh)

Priority Applications (5)

Application Number Priority Date Filing Date Title
PCT/CN2019/097129 WO2021012157A1 (zh) 2019-07-22 2019-07-22 彩色显示面板及其控制方法
US17/052,765 US11158235B2 (en) 2019-07-22 2019-07-22 Color display panel and control method thereof
EP19930168.0A EP3799018A4 (en) 2019-07-22 2019-07-22 COLOR DISPLAY PANEL AND CONTROL METHOD THEREOF
JP2020559496A JP2021534436A (ja) 2019-07-22 2019-07-22 カラーディスプレイパネルとその制御方法
CN201980048120.XA CN112567444A (zh) 2019-07-22 2019-07-22 彩色显示面板及其控制方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2019/097129 WO2021012157A1 (zh) 2019-07-22 2019-07-22 彩色显示面板及其控制方法

Publications (1)

Publication Number Publication Date
WO2021012157A1 true WO2021012157A1 (zh) 2021-01-28

Family

ID=74192746

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2019/097129 WO2021012157A1 (zh) 2019-07-22 2019-07-22 彩色显示面板及其控制方法

Country Status (5)

Country Link
US (1) US11158235B2 (zh)
EP (1) EP3799018A4 (zh)
JP (1) JP2021534436A (zh)
CN (1) CN112567444A (zh)
WO (1) WO2021012157A1 (zh)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113777830A (zh) * 2021-09-10 2021-12-10 福建华佳彩有限公司 一种RGB Mini LED背光

Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040201558A1 (en) * 2003-04-11 2004-10-14 Eastman Kodak Company Color OLED display with improved power efficiency
CN102142210A (zh) * 2011-03-28 2011-08-03 深圳市宏啟光电有限公司 发光二极管显示装置及其显示面板
CN102201183A (zh) * 2010-03-26 2011-09-28 索尼公司 图像显示装置
CN103093722A (zh) * 2013-02-22 2013-05-08 厦门大学 四色led显示屏子像素重组方法
CN103632618A (zh) * 2013-10-30 2014-03-12 友达光电股份有限公司 彩色显示面板
CN104269138A (zh) * 2014-10-24 2015-01-07 京东方科技集团股份有限公司 白光oled显示装置及其显示控制方法、显示控制装置
CN204834691U (zh) * 2015-08-12 2015-12-02 泉州市世芯智能照明技术研究院有限公司 一种基于双反光杯的四芯5050 led贴片光源
CN105679235A (zh) * 2016-03-31 2016-06-15 广东欧珀移动通信有限公司 一种像素调用方法及装置
CN105976771A (zh) * 2016-07-29 2016-09-28 武汉华星光电技术有限公司 液晶显示面板及其驱动方法
CN206210351U (zh) * 2016-09-18 2017-05-31 佛山市国星光电股份有限公司 一种rgbw显示屏
CN108184103A (zh) * 2018-01-02 2018-06-19 北京小米移动软件有限公司 显示图像的方法和装置
CN108206234A (zh) * 2016-12-20 2018-06-26 乐金显示有限公司 发光二极管芯片及包括该芯片的发光二极管显示设备
CN109327689A (zh) * 2017-07-31 2019-02-12 深圳光峰科技股份有限公司 显示设备及显示方法
CN109935600A (zh) * 2019-03-29 2019-06-25 京东方科技集团股份有限公司 一种Micro LED阵列结构、显示面板和显示装置

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2927279B2 (ja) * 1996-07-29 1999-07-28 日亜化学工業株式会社 発光ダイオード
US6801001B2 (en) * 2000-10-27 2004-10-05 Science Applications International Corporation Method and apparatus for addressing micro-components in a plasma display panel
JP4679242B2 (ja) * 2005-05-25 2011-04-27 三洋電機株式会社 表示装置
US7907133B2 (en) * 2006-04-13 2011-03-15 Daktronics, Inc. Pixel interleaving configurations for use in high definition electronic sign displays
CN201259772Y (zh) * 2008-08-29 2009-06-17 深圳市宏啟光电有限公司 一种led显示装置
KR101399304B1 (ko) * 2009-10-08 2014-05-28 엘지디스플레이 주식회사 액정표시장치 및 그 구동방법
KR101537434B1 (ko) * 2011-09-19 2015-07-17 엘지디스플레이 주식회사 유기전계발광표시장치의 광학보상방법 및 구동방법
KR102306598B1 (ko) * 2014-07-31 2021-09-30 삼성디스플레이 주식회사 표시 장치
CN104299568B (zh) * 2014-10-23 2016-08-17 京东方科技集团股份有限公司 一种woled显示装置的图像显示控制方法及装置、显示装置

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040201558A1 (en) * 2003-04-11 2004-10-14 Eastman Kodak Company Color OLED display with improved power efficiency
CN102201183A (zh) * 2010-03-26 2011-09-28 索尼公司 图像显示装置
CN102142210A (zh) * 2011-03-28 2011-08-03 深圳市宏啟光电有限公司 发光二极管显示装置及其显示面板
CN103093722A (zh) * 2013-02-22 2013-05-08 厦门大学 四色led显示屏子像素重组方法
CN103632618A (zh) * 2013-10-30 2014-03-12 友达光电股份有限公司 彩色显示面板
CN104269138A (zh) * 2014-10-24 2015-01-07 京东方科技集团股份有限公司 白光oled显示装置及其显示控制方法、显示控制装置
CN204834691U (zh) * 2015-08-12 2015-12-02 泉州市世芯智能照明技术研究院有限公司 一种基于双反光杯的四芯5050 led贴片光源
CN105679235A (zh) * 2016-03-31 2016-06-15 广东欧珀移动通信有限公司 一种像素调用方法及装置
CN105976771A (zh) * 2016-07-29 2016-09-28 武汉华星光电技术有限公司 液晶显示面板及其驱动方法
CN206210351U (zh) * 2016-09-18 2017-05-31 佛山市国星光电股份有限公司 一种rgbw显示屏
CN108206234A (zh) * 2016-12-20 2018-06-26 乐金显示有限公司 发光二极管芯片及包括该芯片的发光二极管显示设备
CN109327689A (zh) * 2017-07-31 2019-02-12 深圳光峰科技股份有限公司 显示设备及显示方法
CN108184103A (zh) * 2018-01-02 2018-06-19 北京小米移动软件有限公司 显示图像的方法和装置
CN109935600A (zh) * 2019-03-29 2019-06-25 京东方科技集团股份有限公司 一种Micro LED阵列结构、显示面板和显示装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP3799018A4 *

Also Published As

Publication number Publication date
EP3799018A1 (en) 2021-03-31
JP2021534436A (ja) 2021-12-09
EP3799018A4 (en) 2022-07-20
US11158235B2 (en) 2021-10-26
CN112567444A (zh) 2021-03-26
US20210264841A1 (en) 2021-08-26

Similar Documents

Publication Publication Date Title
KR101381350B1 (ko) 백라이트 유닛 어셈블리와 이를 포함하는 액정 표시 장치및 이의 디밍 방법
US20140347410A1 (en) Driving method of image display device
CN110570798B (zh) 彩色显示面板及其控制方法
US20100321414A1 (en) Display device
WO2016192240A1 (zh) 一种场序显示面板、场序显示装置及驱动方法
CN104145301A (zh) 显示装置
US20170263209A1 (en) Backlight unit, display panel and display device
CN203179432U (zh) 具有高画面填充比的全彩led显示模块
WO2021012157A1 (zh) 彩色显示面板及其控制方法
CN208058713U (zh) 一种高色域背光光学系统装置、背光灯条及背光模组
US9837467B2 (en) LED virtual arrangement and LED display screen using the same
WO2023221765A1 (zh) 发光组件、背光模组及其驱动方法、显示装置
WO2021042385A1 (zh) 一种led模块及led显示装置
TWI426498B (zh) 顯示器及顯示器之顏色調整方法
CN214847516U (zh) 量子点灯珠以及led显示屏
JP2016035806A (ja) バックライト装置およびそれを備えた液晶表示装置
CN205485193U (zh) 一种显示装置
CN206649840U (zh) 高密的led发光芯片直发光的无灯珠显示屏
WO2023070542A1 (zh) 显示模组及显示装置
JP2021022526A (ja) 表示装置
CN221226257U (zh) 一种高亮度的倒装rgb led芯片
US11699405B2 (en) Methods for compensating colors based on virtual chromaticity coordinate points and the related display devices
TWI819688B (zh) 具非矩形主動區的顯示裝置與其畫素結構
KR20090004016A (ko) 백라이트 유닛 어셈블리
CN106373950B (zh) Led封装结构、显示装置和色彩显示方法

Legal Events

Date Code Title Description
ENP Entry into the national phase

Ref document number: 2020559496

Country of ref document: JP

Kind code of ref document: A

ENP Entry into the national phase

Ref document number: 2019930168

Country of ref document: EP

Effective date: 20201202

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

Ref document number: 19930168

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE