CN110085181B - Adjustment method for chromaticity specification of spliced panel - Google Patents
Adjustment method for chromaticity specification of spliced panel Download PDFInfo
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- CN110085181B CN110085181B CN201910284503.9A CN201910284503A CN110085181B CN 110085181 B CN110085181 B CN 110085181B CN 201910284503 A CN201910284503 A CN 201910284503A CN 110085181 B CN110085181 B CN 110085181B
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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
- G09G3/34—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 by control of light from an independent source
- G09G3/36—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 by control of light from an independent source using liquid crystals
- G09G3/3607—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 by control of light from an independent source using liquid crystals for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels
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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
- G09G2320/00—Control of display operating conditions
- G09G2320/06—Adjustment of display parameters
- G09G2320/0666—Adjustment of display parameters for control of colour parameters, e.g. colour temperature
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Abstract
The application provides a method for adjusting the chromaticity specification of a spliced panel, which comprises the following steps: providing a product chromaticity specification (x1, y1) of the display panel; obtaining a target chromaticity specification (x2, y2) from the product chromaticity specification (x1, y 1); adjusting the target chromaticity specification (x2, y2) of the display panel to the product chromaticity specification (x1, y1) based on the target chromaticity specification (x2, y 2). According to the adjusting method of the chromaticity specification of the spliced panel, the display panel is adjusted to the target chromaticity specification at first, then the target chromaticity specification is adjusted to the product chromaticity specification, so that the loss of light penetration rate when the display panel is adjusted to the product chromaticity specification is reduced, and the chromaticity of the spliced panel between the display panels tends to be yellow and consistent under a large visual angle through the target setting specification; the technical problems that the light penetration rate of the existing spliced panel is reduced under a large visual angle and the color cast is serious are solved.
Description
Technical Field
The present disclosure relates to display technologies, and particularly to a method for adjusting chromaticity specification of a tiled display panel.
Background
Displays used in liquid crystal tiled screens exist for color differences from screen to screen. The ratio of RGB (white balance) is generally adjusted to reduce the chromaticity difference. This causes a serious color shift with a large viewing angle in addition to a decrease in transmittance of the liquid crystal display panel.
Disclosure of Invention
The embodiment of the application provides a method for adjusting the chromaticity specification of a spliced panel, which aims to solve the technical problems that the light penetration rate of the existing spliced panel is reduced under a large visual angle and the color cast is serious.
The embodiment of the application provides a method for adjusting the chromaticity specification of a spliced panel, wherein the spliced panel comprises a plurality of display panels, and the method for adjusting the chromaticity specification comprises the following steps:
providing a product chromaticity specification (x1, y1) of the display panel;
obtaining a target chromaticity specification (x2, y2) from the product chromaticity specification (x1, y 1);
adjusting the target chromaticity specification (x2, y2) of the display panel to the product chromaticity specification (x1, y1) based on the target chromaticity specification (x2, y 2).
In the method for adjusting the chromaticity specification of the tiled panel, the obtaining of the target chromaticity specification according to the product chromaticity specification includes the following steps:
obtaining a target chromaticity specification range according to the product chromaticity specification (x1, y 1);
setting the target chromaticity specification (x2, y2) to (x1+ x0, y1+ y0) according to the product chromaticity specification (x1, y 1);
obtaining the target chromaticity specification (x2, y2) by adjusting the x0 value and y0 value; the target chromaticity specification is within the target chromaticity specification range.
In the method for adjusting chromaticity specification of a tiled panel, the obtaining a target chromaticity specification range according to the product chromaticity specification (x1, y1) includes the following steps:
collecting each chromaticity coordinate in the display panel and the corresponding light penetration rate thereof through a collection module;
comparing each chromaticity coordinate with the corresponding light penetration rate thereof to obtain at least two limit chromaticity coordinates, wherein the limit chromaticity coordinates are chromaticity coordinates with the light penetration rate of 95%;
forming the target chromaticity specification range from the product chromaticity specification (x1, y1) and at least two of the limit chromaticity coordinates; the light penetration rate of the target chromaticity specification range is greater than or equal to 95%, and the target chromaticity specification is within the target chromaticity specification range.
In the method for adjusting the chromaticity specification of the spliced panel, the y2 value is greater than or equal to the x2 value.
In the method of adjusting the chromaticity specification of the tiled panel of the present application, the coordinates (x2 ± 0.003, y2 ± 0.003) of the target chromaticity specification within the tolerance are within the target chromaticity specification range.
In the method for adjusting the chromaticity specification of the tiled panel, the absolute value of x0 and the absolute value of y0 are both N times of 0.005, and N is an integer.
In the adjusting method of the chromaticity specification of the tiled display panel, the display panel comprises a light source structure,
when the light source structure comprises a blue light source and red and green fluorescent powder positioned on the blue light source; or the like, or, alternatively,
when the lamp source structure comprises a blue light source, and yellow fluorescent powder and red fluorescent powder which are positioned in the blue light source; or the like, or, alternatively,
when the light source structure comprises a blue light source, yellow fluorescent powder and red and green fluorescent powder which are positioned in the blue light source;
the x0 values are all set to 0.005 and the y0 values are all set to-0.005.
In the method for adjusting the chromaticity specification of the spliced panel, the display panel comprises a lamp source structure, and when the lamp source structure comprises a blue light source and yellow fluorescent powder positioned in the blue light source;
the absolute value of x0 is twice the absolute value of y 0.
In the adjustment method of the chromaticity specification of the spliced panel, the value of x0 is-0.005, and the value of y0 is-0.010.
In the adjustment method of the chromaticity standard of the tiled display panel, the target chromaticity standard of each display panel is the same.
Compared with the spliced panel in the prior art, the method for adjusting the chromaticity specification of the spliced panel reduces the loss of light penetration rate when the display panel is adjusted to the product chromaticity specification by adjusting the display panel to the target chromaticity specification and then adjusting the target chromaticity specification to the product chromaticity specification, and ensures that the chromaticity of the spliced panel between the display panels tends to be yellow and consistent under a large viewing angle through the setting of the target setting specification; the technical problems that the light penetration rate of the existing spliced panel is reduced under a large visual angle and the color cast is serious are solved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required in the embodiments are briefly described below. The drawings in the following description are only some embodiments of the present application, and it will be obvious to those skilled in the art that other drawings can be obtained from the drawings without inventive effort.
Fig. 1 is a flowchart of a method for adjusting chromaticity specification of a tiled panel according to an embodiment of the present application;
fig. 2 is a flowchart of step S2 of a method for adjusting chromaticity specification of a tiled panel according to an embodiment of the present application;
FIG. 3 is a schematic diagram of chromaticity coordinates, light transmittance, and target specification range of a tiled display panel according to an embodiment of the present disclosure;
fig. 4 is a flowchart of step S121 of a method for adjusting chromaticity specification of a tiled panel according to an embodiment of the present application.
The figure illustrates that in fig. 3, the upper value of a coordinate point is the coordinate value of the coordinate point, and the lower value is the light transmittance of the coordinate point.
Detailed Description
Refer to the drawings wherein like reference numbers refer to like elements throughout. The following description is based on illustrated embodiments of the application and should not be taken as limiting the application with respect to other embodiments that are not detailed herein.
Referring to fig. 1, fig. 1 is a flowchart illustrating a method for adjusting chromaticity specification of a tiled panel according to an embodiment of the present application.
According to the adjustment method for the chromaticity specification of the spliced panel, the spliced panel comprises a plurality of display panels. The method for adjusting the chromaticity specification comprises the following steps:
s11: providing a product chromaticity specification (x1, y1) of the display panel;
s12: obtaining a target chromaticity specification (x2, y2) from the product chromaticity specification (x1, y 1);
s13: adjusting the target chromaticity specification (x2, y2) of the display panel to the product chromaticity specification (x1, y1) based on the target chromaticity specification (x2, y 2).
In the method for adjusting the chromaticity specification of the tiled panel according to this embodiment, the following is a description of specific steps.
In step S11, a product chromaticity specification (x1, y1) of the display panel is provided.
The product chromaticity specification (x1, y1) of each display panel is consistent among the tiled panels. Wherein the product color specification has a value of x1 of 0.280 and a value of y1 of 0.290. In addition, the value of the product chromaticity specification is not limited thereto.
In step S12, please refer to fig. 2, a target chromaticity specification (x2, y2) is obtained according to the product chromaticity specification (x1, y 1). The method comprises the following steps:
s121: obtaining a target chromaticity specification range according to the product chromaticity specification (x1, y 1);
s122: setting the target chromaticity specification (x2, y2) to (x1+ x0, y1+ y0) according to the product chromaticity specification (x1, y 1);
s123: obtaining the target chromaticity specification (x2, y2) by adjusting the x0 value and y0 value; the target chromaticity specification is within the target chromaticity specification range.
Specifically, referring to fig. 4, step S121 includes the following steps:
s1211: collecting each chromaticity coordinate in the display panel and the corresponding light penetration rate thereof through a collection module;
s1212: comparing each chromaticity coordinate with the corresponding light penetration rate thereof to obtain at least two limit chromaticity coordinates, wherein the limit chromaticity coordinates are chromaticity coordinates with the light penetration rate of 95%;
s1213: forming the target chromaticity specification range from the product chromaticity specification (x1, y1) and at least two of the limit chromaticity coordinates; the light penetration rate of the target chromaticity specification range is greater than or equal to 95%, and the target chromaticity specification is within the target chromaticity specification range.
Specifically, the purpose of step S1211 is to: the light transmittance of each chromaticity coordinate is collected, and preparation is made for obtaining the chromaticity coordinate with the light transmittance of 95% in the subsequent step S1212. Subsequently, the process proceeds to step S1212.
The purpose of step S1212 is to: and comparing all the light transmittance by taking the light transmittance as a standard of 95%, thereby obtaining a corresponding chromaticity coordinate with the light transmittance of 95%, namely a limit chromaticity coordinate. In the present application, the light transmittance corresponding to the limit chromaticity coordinate can be changed according to the actual situation. For example, if the light transmittance loss is further reduced, the light transmittance corresponding to the limit chromaticity coordinates may be set to 95% or more, such as 96%, 97%, or 98%. Thus, different limit chromaticity coordinates are obtained according to different light transmittances.
Subsequently, the process proceeds to step S1213.
The purpose of step S1213 is: and forming a closed area according to the product chromaticity specification and the limit chromaticity specification to determine a target chromaticity coordinate range with the light transmittance of more than or equal to 95%. The purpose of step S121 is therefore: determining the range of the target chromaticity specification range with the light transmittance of more than or equal to 95 percent. Subsequently, the process proceeds to step S122. Step S121 and step S122 are not described in succession.
In step S122, the target chromaticity specification (x2, y2) is set to (x1+ x0, y1+ y0) according to the product chromaticity specification (x1, y 1). Subsequently, the process proceeds to step S123.
In step S123, the target chromaticity specification (x2, y2) is obtained by adjusting the x0 value and y0 value. Specifically, by adjusting the x0 value and the y0 value, a specific target chromaticity specification (x2, y2) is obtained.
Note that, in the target chromaticity specifications (x2, y2), the value of y2 is equal to or greater than the value of x 2. Since the Y value relates to luminance and is extremely sensitive, as the Y value increases, the luminance increases dramatically, affecting the overall display.
In addition, since the target chromaticity coordinates have a tolerance (± 0.003), the selected target chromaticity specification is within the target chromaticity specification range in order to ensure that the target chromaticity specification is within the target chromaticity specification range. Coordinates (x2 ± 0.003, y2 ± 0.003) of the target chromaticity specification within a tolerance are within the target chromaticity specification range. In this embodiment, therefore, the selection of the target chromaticity specification is affected by the chromaticity coordinate tolerance.
Since the chromaticity coordinate tolerance is (+ -0.003) in this embodiment, the chromaticity specification range is selected to be at the lower right of the product chromaticity specification (x1, y 1). Referring to fig. 3, the coordinate points and the corresponding light transmittance are part of the experimental data, and the chromaticity specification range a is only an exemplary range.
Since human eyes feel the difference in chromaticity (0.003,0.006), but after matching with L ED chromaticity adjustment, the difference in chromaticity can be 0.005 as one unit, so this embodiment adjusts with 0.005 as the minimum unit, therefore, the absolute value of x0 and the absolute value of y0 are both N times of 0.005, and N is an integer.
For example, the display panel comprises a light source structure, when the light source structure comprises a blue light source and red and green fluorescent powder positioned in the blue light source, and the x0 value and the y0 value are adjusted by adjusting the proportion of the red and green fluorescent powder.
When the lamp source structure comprises a blue light source, and yellow fluorescent powder and red fluorescent powder which are positioned in the blue light source; the x0 value and the y0 value are adjusted by adjusting the proportion of the yellow-red fluorescent powder.
When the light source structure comprises a blue light source, yellow fluorescent powder and red and green fluorescent powder which are positioned in the blue light source; the x0 value and the y0 value are adjusted by adjusting the proportion of the red and green fluorescent powder.
In the backlight design, x0 is set to 0.005 and y0 is set to-0.005. Namely, the target chromaticity specification (0.285 ) is obtained by adjusting the proportion of the relevant fluorescent powder to set x0 to be 0.005 and y0 to be-0.005, and the point is positioned in the center of the target chromaticity specification range. The coordinate point is guaranteed to be within the target chromaticity specification even if a tolerance (± 0.003) is added.
In addition, when the lamp source structure comprises a blue light source and a yellow phosphor positioned at the blue light source; the x0 value and the y0 value are adjusted by adjusting the proportion of the yellow fluorescent powder. Therefore, when the specific gravity of the yellow fluorescent powder is high, the light emission becomes yellow, and the x0 value and the y0 value are increased together; when the specific gravity of the yellow phosphor is low, the light emission is blue, and the x0 value and the y0 value are reduced together. In this backlight design, the absolute value of x0 is twice the absolute value of y 0.
Optionally, the value of x0 is-0.005, and the value of y0 is-0.010, i.e. in this embodiment, the target chromaticity specification is (0.275, 0.280).
And the target chromaticity specifications of the display panels are the same. Through the setting of the target chromaticity specification, in the process of adjusting the target chromaticity specification to the product chromaticity specification, all display panels tend to be yellow and consistent under a large viewing angle, and the loss of light penetration rate is reduced.
Then go to step 13.
In step S13, the target chromaticity specification (x2, y2) of the display panel is adjusted to the product chromaticity specification (x1, y1) based on the target chromaticity specification (x2, y 2).
Specifically, the product chromaticity specification is set as a standard specification, and the display panel having the target chromaticity specification is adjusted to the display panel having the product chromaticity specification. The adjustment process is prior art and therefore not described herein.
Thus, the adjustment method of the chromaticity specification of the tiled panel of the embodiment is completed.
Compared with the spliced panel in the prior art, the method for adjusting the chromaticity specification of the spliced panel reduces the loss of light penetration rate when the display panel is adjusted to the product chromaticity specification by adjusting the display panel to the target chromaticity specification and then adjusting the target chromaticity specification to the product chromaticity specification, and ensures that the chromaticity of the spliced panel between the display panels tends to be yellow and consistent under a large viewing angle through the setting of the target setting specification; the technical problems that the light penetration rate of the existing spliced panel is reduced under a large visual angle and the color cast is serious are solved.
As described above, it will be apparent to those skilled in the art that various other changes and modifications can be made based on the technical solution and concept of the present application, and all such changes and modifications shall fall within the scope of the appended claims.
Claims (8)
1. A method for adjusting chromaticity specification of a tiled panel, the tiled panel comprising a plurality of display panels, the method comprising:
providing a product chromaticity specification (x1, y1) of the display panel;
obtaining a target chromaticity specification (x2, y2) from the product chromaticity specification (x1, y 1);
adjusting the target chromaticity specification (x2, y2) of the display panel to the product chromaticity specification (x1, y1) based on the target chromaticity specification (x2, y 2);
the method for obtaining the target chromaticity specification according to the product chromaticity specification comprises the following steps:
obtaining a target chromaticity specification range according to the product chromaticity specification (x1, y 1);
setting the target chromaticity specification (x2, y2) to (x1+ x0, y1+ y0) according to the product chromaticity specification (x1, y 1);
obtaining the target chromaticity specification (x2, y2) by adjusting the x0 value and y0 value; the target chromaticity specification is within the target chromaticity specification range;
the step of obtaining a target chromaticity specification range according to the product chromaticity specification (x1, y1) comprises the following steps:
collecting each chromaticity coordinate in the display panel and the corresponding light penetration rate thereof through a collection module;
comparing each chromaticity coordinate with the corresponding light penetration rate thereof to obtain at least two limit chromaticity coordinates, wherein the limit chromaticity coordinates are chromaticity coordinates with the light penetration rate of 95%;
forming the target chromaticity specification range from the product chromaticity specification (x1, y1) and at least two of the limit chromaticity coordinates; the light penetration rate of the target chromaticity specification range is greater than or equal to 95%, and the target chromaticity specification is within the target chromaticity specification range.
2. The method for adjusting the chromaticity specification of the tiled panel according to claim 1, wherein the y2 value is equal to or greater than x2 value.
3. The method of adjusting the chromaticity specification of the tiled panel according to claim 1, wherein the coordinates (x2 ± 0.003, y2 ± 0.003) of the target chromaticity specification within the tolerance are within the target chromaticity specification range.
4. The method of claim 1, wherein the absolute value of x0 and the absolute value of y0 are both N times 0.005, and N is an integer.
5. The method of claim 1, wherein the display panel comprises a light source structure,
when the light source structure comprises a blue light source and red and green fluorescent powder positioned on the blue light source; or the like, or, alternatively,
when the lamp source structure comprises a blue light source, and yellow fluorescent powder and red fluorescent powder which are positioned in the blue light source; or the like, or, alternatively,
when the light source structure comprises a blue light source, yellow fluorescent powder and red and green fluorescent powder which are positioned in the blue light source;
the x0 values are all set to 0.005 and the y0 values are all set to-0.005.
6. The method of claim 1, wherein the display panel comprises a lamp structure, and when the lamp structure comprises a blue light source and a yellow phosphor disposed in the blue light source;
the absolute value of x0 is twice the absolute value of y 0.
7. The method of claim 6, wherein the x0 value is-0.005 and the y0 value is-0.010.
8. The method of claim 1, wherein the target chromaticity specification of each display panel is the same.
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CN201910284503.9A CN110085181B (en) | 2019-04-10 | 2019-04-10 | Adjustment method for chromaticity specification of spliced panel |
PCT/CN2019/127908 WO2020207055A1 (en) | 2019-04-10 | 2019-12-24 | Method for adjusting chromaticity specifications of spliced panels |
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CN110085181B (en) * | 2019-04-10 | 2020-08-04 | 惠州市华星光电技术有限公司 | Adjustment method for chromaticity specification of spliced panel |
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CN104766574A (en) * | 2015-03-24 | 2015-07-08 | 小米科技有限责任公司 | Color temperature regulating method and device |
CN106200229A (en) * | 2015-05-04 | 2016-12-07 | 深圳市绎立锐光科技开发有限公司 | Splicing display device and tiled display control method |
JP2018055993A (en) * | 2016-09-29 | 2018-04-05 | パナソニックIpマネジメント株式会社 | Luminaire and illumination control method |
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