CN109935219B - Display method of spliced panel - Google Patents
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- CN109935219B CN109935219B CN201910279909.8A CN201910279909A CN109935219B CN 109935219 B CN109935219 B CN 109935219B CN 201910279909 A CN201910279909 A CN 201910279909A CN 109935219 B CN109935219 B CN 109935219B
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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
Abstract
The application provides a display method of a spliced panel, which comprises the steps of collecting the chromaticity and the brightness of a display panel; judging whether the difference value of the acquired chromaticity and the set chromaticity value is in a first set range, if so, performing first order-cutting processing on the blue pixel; converting the brightness and the chromaticity under different gray scales into a white field chromaticity coordinate value and a gamma value under different gray scales; and fitting a change curve of the white field chromaticity coordinate and the gamma value along with the gray scale according to the obtained white field chromaticity coordinate and the gamma value under the gray scale so as to obtain the white field chromaticity coordinate value and the gamma value of the display panel under the full gray scale. The display panel that this application will accord with first settlement scope cuts the rank and handles, is about to the voltage value that blue of the highest N rank corresponds down, and the voltage value that the grey scale of red green colour corresponds is unchangeable for a plurality of liquid crystal display panels all are partial yellow under the wide-angle of view, have ensured the chroma correction of concatenation panel, make the front view of people's eye and look sideways at the colour that sees and have the uniformity.
Description
Technical Field
The application relates to a display technology, in particular to a display method of a spliced panel.
Background
Displays used in tiled displays typically have their RGB ratios (white balance) adjusted to reduce the difference in chromaticity. This causes a more serious color shift at a large viewing angle, in addition to a decrease in the transmittance of a Liquid Crystal Display (LCD) panel, because the Liquid Crystal is viewed at a large viewing angle at a larger angle.
Disclosure of Invention
The embodiment of the application provides a display method of a spliced panel, which aims to solve the technical problem that the existing display method of the spliced panel causes large visual angle and large color cast.
The embodiment of the application provides a display method of a spliced panel, wherein the spliced panel comprises at least two display panels, and the display method comprises the following steps:
collecting the chromaticity and the brightness of a display panel;
judging whether the difference value of the acquired chromaticity and the set chromaticity value is in a first set range, if so, performing first order-cutting processing on the blue pixel;
converting the brightness and the chromaticity under different gray scales into a white field chromaticity coordinate value and a gamma value under different gray scales;
and fitting a change curve of the white field chromaticity coordinate and the gamma value along with the gray scale according to the obtained white field chromaticity coordinate and the gamma value under the gray scale so as to obtain the white field chromaticity coordinate value and the gamma value of the display panel under the full gray scale.
In the display method of the tiled display panel, the first setting range is a difference range M1 between the measured chroma value and the setting chroma value; wherein M1 is less than or equal to 0.002.
In the display method of the tiled display panel of the present application, the performing a first chopping process on the blue pixels includes:
and according to a preset chopping gray scale order N, enabling the voltage values corresponding to the N continuous gray scale values of the reciprocal to be the same as the voltage values corresponding to the (N +1) th gray scale value of the reciprocal.
In the display method of the tiled panel of the present application, the range of the preset cut-off gray scale order N is: n is more than or equal to 2 and less than or equal to 20, and is an integer.
In the display method of the tiled panel of the present application, N is equal to 5.
In the display method of the tiled panel of the present application, the method includes:
and judging whether the difference value of the acquired chromaticity and the set chromaticity value is within a second set range, and if so, performing second chopping processing on the corresponding color pixel.
In the display method of the tiled display panel of the present application, the second setting range is a difference range M2 between the acquired chromaticity value and the setting chromaticity value; wherein M2 is more than or equal to 0.003.
In the display method of the tiled display panel of the present application, the acquiring the chromaticity and luminance of the display panel includes the following steps:
controlling the display panel to display a test image;
and acquiring the brightness and the chromaticity of the display panel when the display panel displays the test image by using an image acquisition module.
In the display method of the tiled display panel of the present application, before collecting the chromaticity and luminance of the display panel, the method further includes the steps of:
inputting a white balance value of a standard sample into each of the display panels;
controlling the display panel to display a test image with different gray levels, and acquiring full gray level data of the display panel;
judging whether the acquired data is in a specified range, if so, entering the next process; if not, the white balance adjustment is carried out until the acquired data is within the specified range.
In the display method of the tiled display panel of the present application, the data includes white field chromaticity coordinate values and gamma values at full gray scale.
Compared with the display method of the spliced panel in the prior art, the display method of the spliced panel has the advantages that the display panel which accords with the first set range is subjected to hacking treatment, namely the voltage value corresponding to the blue with the highest N levels is reduced, and the voltage value corresponding to the gray scale of the red and green colors is unchanged, so that a plurality of liquid crystal display panels are all yellow under a large visual angle, the chromaticity correction of the spliced panel is ensured, and the colors seen by the front view and the side view of human eyes are consistent; the technical problem that the large visual angle and the large color cast are caused by the existing display method of the spliced panel is 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 display method of a tiled panel according to an embodiment of the present application.
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 display method of a tiled display panel according to an embodiment of the present application.
In the display method of the tiled display panel according to the embodiment of the present application, the tiled display panel includes at least two display panels. The display method comprises the following steps:
s11: collecting the chromaticity and the brightness of a display panel;
s12: judging whether the difference value of the acquired chromaticity and the set chromaticity value is in a first set range, if so, performing first order-cutting processing on the blue pixel; judging whether the difference value of the acquired chromaticity and the set chromaticity value is in a second set range, if so, performing second chopping processing on the corresponding color pixel;
s13: converting the brightness and the chromaticity under different gray scales into a white field chromaticity coordinate value and a gamma value under different gray scales;
s14: and fitting a change curve of the white field chromaticity coordinate and the gamma value along with the gray scale according to the obtained white field chromaticity coordinate and the gamma value under the gray scale so as to obtain the white field chromaticity coordinate value and the gamma value of the display panel under the full gray scale.
The following is a detailed description of a display method of the tiled display panel according to the embodiment of the present application.
In step S11, acquiring chromaticity and brightness of the display panel;
specifically, the method comprises the following steps:
controlling the display panel to display a test image;
and acquiring the brightness and the chromaticity of the display panel when the display panel displays the test image by using an image acquisition module.
The chromaticity and brightness of the display panel are the chromaticity and brightness of various pixels in the display panel at full gray scale, such as red, green, blue and white pixels. And then proceeds to S12.
In step S12, it is determined whether the difference between the acquired chromaticity and the set chromaticity value is within a first set range, and if so, a first clipping process is performed on the blue pixel; and judging whether the difference value of the acquired chromaticity and the set chromaticity value is in a second set range, and if so, performing second chopping processing on the corresponding color pixel.
Specifically, the step has two judgment conditions and corresponding processing methods. One is as follows: judging whether the difference value of the acquired chromaticity and the set chromaticity value is in a first set range, if so, performing first order-cutting processing on the blue pixel;
the second is that: and judging whether the difference value of the acquired chromaticity and the set chromaticity value is within a second set range, and if so, performing second chopping processing on the corresponding color pixel.
The first set range is a difference range M1 between the measured chroma value and the set chroma value; wherein M1 is less than or equal to 0.002 and/or M1 is less than or equal to-0.002. In the present embodiment, M1 is ≦ 0.002. That is, when the difference between the measured chromaticity value and the set chromaticity value falls within M1 or less than 0.002, the first chopping process can be performed on the blue pixels of the display panel. In addition, since the chromaticity of different display panels is different, the chromaticity value to be set may be determined according to specific situations.
And the first chopping processing is carried out on the blue pixels, which specifically comprises the following steps: and according to a preset chopping gray scale order N, enabling the voltage values corresponding to the N continuous gray scale values of the reciprocal to be the same as the voltage values corresponding to the (N +1) th gray scale value of the reciprocal.
The preset range of the hacking gray scale order N is as follows: n is more than or equal to 2 and less than or equal to 20, and N is an integer. When the N value is less than 2, the color cast between the display panels in a large-angle visual angle is not changed, so that the effect of improving the color cast is achieved; when the value of N is greater than 20, the light transmittance of the clipped color of the display panel may be reduced and the color space of the clipped color may be insufficient. In the display method of the tiled panel of the present application, N is equal to 5.
For example, if N is 5, the order of blue gray scale needs to be cut off to 5. Specifically, assume that the display panel is 8-bit, so the display panel has 256 gray scales of 0-255, wherein the B255 level (blue 255 level) defines a white full-bright state. The step-down is to input the voltage value of the high gray level to be the same as the low gray level, for example, the voltage of the B250 level is 15V and the voltages of the B251 level to the B255 level are all filled with 15V, which means that the colors of the B251 level to the B255 level are the same as the B250 level, that is, the five gray levels of the B251 level to the B255 level are invalid, and the settings of the other gray levels are not changed.
In this step, the first chopping step is performed with the purpose of: the display panels in the spliced panel are yellow at a large visual angle, so that the chromaticity correction of the spliced panel is ensured, the colors seen by the front view and the side view of human eyes are consistent, and the color cast at the large visual angle is avoided.
In addition, the second setting range is a difference range M2 of the acquired chroma value and the setting chroma value; wherein M2 is more than or equal to 0.003. That is, when the difference between the measured chromaticity value and the set chromaticity value is within M2 ≧ 0.003, the second clipping process can be performed on the blue pixel of the display panel. In addition, since the chromaticity of different display panels is different, the chromaticity value to be set may be determined according to specific situations.
And when the difference value between the acquired chromatic value and the set chromatic value falls within a second set range M2, performing second chopping processing. The second chopping step processing is different chopping step processing according to different conditions. For example, if the display is red, a red-color slash process is performed, and so on. Of course, if the deviation is large, the red, green and blue colors may be adjusted before the second hacking process.
Subsequently, the process proceeds to step S13.
In step S13, the luminance and chromaticity in different gray scales are converted into white field chromaticity coordinate values and gamma values in different gray scales.
Specifically, after the color is cut down, the brightness and the chromaticity under different gray levels are converted into the coordinate value and the gamma value of the white field chromaticity under different gray levels according to the gray level setting after the color is cut down. Subsequently, the process proceeds to step S14.
In step S14, a curve of variation of the white field chromaticity coordinate and the gamma value with the gray scale is fitted according to the obtained white field chromaticity coordinate and the gamma value under the gray scale, so as to obtain the white field chromaticity coordinate value and the gamma value of the display panel under the full gray scale.
Thus, the process of the display method of the tiled display panel according to the embodiment of the present application is completed.
It is obvious that each display panel in the tiled panel of the present application needs to be subjected to preliminary white balance adjustment before the tiled panel is subjected to the hacking process. The white balance adjustment step includes:
inputting a white balance value of a standard sample into each of the display panels;
controlling the display panel to display a test image with different gray levels, and acquiring full gray level data of the display panel;
judging whether the acquired data is in a specified range, if so, entering the next process; if not, the white balance adjustment is carried out until the acquired data is within the specified range.
The data includes white field chromaticity coordinate values and gamma values at full gray scale. Wherein the specified ranges are: the difference from the white field chromaticity coordinate value of the standard sample is within ± 0.005 of the white field chromaticity coordinate value of the standard sample. Since the requirements of each display panel are different, the specified range is different, and thus, the present application is not limited thereto.
Compared with the display method of the spliced panel in the prior art, the display method of the spliced panel has the advantages that the display panel which accords with the first set range is subjected to hacking treatment, namely the voltage value corresponding to the blue with the highest N levels is reduced, and the voltage value corresponding to the gray scale of the red and green colors is unchanged, so that a plurality of liquid crystal display panels are all yellow under a large visual angle, the chromaticity correction of the spliced panel is ensured, and the colors seen by the front view and the side view of human eyes are consistent; the technical problem that the large visual angle and the large color cast are caused by the existing display method of the spliced panel is 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 the technical idea of the present invention, and all such changes and modifications should fall within the protective scope of the appended claims.
Claims (10)
1. A display method of a spliced panel, wherein the spliced panel comprises at least two display panels, and the step down is to input a voltage value of a high gray scale to be the same as a voltage value of a low gray scale, and the display method comprises the following steps:
collecting the chromaticity and the brightness of a display panel;
judging whether the difference value of the acquired chromaticity and the set chromaticity value is in a first set range, if so, performing first order-cutting processing on the blue pixel;
converting the brightness and the chromaticity under different gray scales into a white field chromaticity coordinate value and a gamma value under different gray scales;
and fitting a change curve of the white field chromaticity coordinate and the gamma value along with the gray scale according to the obtained white field chromaticity coordinate and the gamma value under the gray scale so as to obtain the white field chromaticity coordinate value and the gamma value of the display panel under the full gray scale.
2. The display method of the tiled panel according to claim 1, wherein the first set range is a difference range M1 between the measured chroma value and the set chroma value; wherein M1 is less than or equal to 0.002.
3. The display method of the tiled panel according to claim 1, wherein the first chopping process on the blue pixels comprises:
and according to a preset chopping gray scale order N, enabling the voltage values corresponding to the N continuous gray scale values of the reciprocal to be the same as the voltage values corresponding to the (N +1) th gray scale value of the reciprocal.
4. The display method of the tiled panel according to claim 3, wherein the preset range of the cut-down gray scale order N is: n is more than or equal to 2 and less than or equal to 20, and is an integer.
5. The tiled display method of claim 4 wherein N is equal to 5.
6. The tiled display method of claim 1, wherein the method comprises:
and judging whether the difference value of the acquired chromaticity and the set chromaticity value is within a second set range, and if so, performing second chopping processing on the corresponding color pixel.
7. The display method of a tiled panel according to claim 6, wherein the second set range is a difference range M2 between the acquired chroma value and the set chroma value; wherein M2 is more than or equal to 0.003.
8. The tiled display method of claim 1 wherein said collecting the chromaticity and luminance of a display panel comprises the steps of:
controlling the display panel to display a test image;
and acquiring the brightness and the chromaticity of the display panel when the display panel displays the test image by using an image acquisition module.
9. The tiled display method of claim 1 wherein the collecting the chromaticity and luminance of the display panel further comprises the steps of:
inputting a white balance value of a standard sample into each of the display panels;
controlling the display panel to display a test image with different gray levels, and acquiring full gray level data of the display panel;
judging whether the acquired data is in a specified range, if so, entering the next process; if not, the white balance adjustment is carried out until the acquired data is within the specified range.
10. The tiled display method of claim 9 wherein the data includes white field chromaticity coordinate values and gamma values at full gray scale.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910279909.8A CN109935219B (en) | 2019-04-09 | 2019-04-09 | Display method of spliced panel |
| PCT/CN2019/128827 WO2020207058A1 (en) | 2019-04-09 | 2019-12-26 | Display method for splicing panel |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910279909.8A CN109935219B (en) | 2019-04-09 | 2019-04-09 | Display method of spliced panel |
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| CN109935219A CN109935219A (en) | 2019-06-25 |
| CN109935219B true CN109935219B (en) | 2020-08-11 |
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| CN109935219B (en) * | 2019-04-09 | 2020-08-11 | 惠州市华星光电技术有限公司 | Display method of spliced panel |
| CN111292670B (en) * | 2020-03-30 | 2022-09-27 | Tcl华星光电技术有限公司 | White balance adjustment method and white balance test data calculation method |
| CN111916017A (en) * | 2020-08-18 | 2020-11-10 | 紫旸升光电科技(苏州)有限公司 | Double-display-screen color correction method and correction system |
| CN112002288A (en) | 2020-08-28 | 2020-11-27 | 深圳市华星光电半导体显示技术有限公司 | Chrominance adjusting method, chrominance adjusting device and display panel |
| CN113077742B (en) * | 2021-03-17 | 2023-02-07 | Tcl华星光电技术有限公司 | Adjusting method and adjusting device of display panel and display panel |
| CN114613339B (en) * | 2022-03-07 | 2023-05-09 | 深圳市华星光电半导体显示技术有限公司 | Chromaticity adjusting method and device for display panel |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US6271825B1 (en) * | 1996-04-23 | 2001-08-07 | Rainbow Displays, Inc. | Correction methods for brightness in electronic display |
| JP2008172343A (en) * | 2007-01-09 | 2008-07-24 | Funai Electric Co Ltd | White balance adjustment system and method, and pdp display |
| CN103730096B (en) * | 2013-12-31 | 2016-09-14 | 深圳市华星光电技术有限公司 | White balance adjustment method and system, liquid crystal display manufacture method |
| CN104882098B (en) * | 2015-06-08 | 2018-07-10 | 广东威创视讯科技股份有限公司 | Method for correcting image and imaging sensor based on LED mosaic display screens |
| CN105405413B (en) * | 2015-12-29 | 2018-10-26 | Tcl新技术（惠州）有限公司 | A kind of white balance realization method and system of adjust automatically LCD splicings |
| CN107293261B (en) * | 2017-07-31 | 2019-08-13 | 深圳市华星光电技术有限公司 | A kind of combination brightness uniformity control system and its control method |
| CN109935219B (en) * | 2019-04-09 | 2020-08-11 | 惠州市华星光电技术有限公司 | Display method of spliced panel |
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| WO2020207058A1 (en) | 2020-10-15 |
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