CN116312410A - System implementation method for consistency of image quality of double-screen liquid crystal display device - Google Patents
System implementation method for consistency of image quality of double-screen liquid crystal display device Download PDFInfo
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- 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
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Abstract
The invention provides a system implementation method for the consistency of the image quality of a double-screen liquid crystal display device, which comprises the following steps: defining and configuring double-screen hardware parameters; the split screen is independently provided with a color temperature adjustment item; the split screen is independently configured with color saturation and tone setting adjustment items; the split screen is independently configured with brightness setting adjustment items; the hardware design parameters and the software parameters of the two screens are respectively stored and applied. The invention solves the problem of consistency of image quality of two or more liquid crystal display screens configured by the same whole machine, develops adjusting parameters aiming at respective color temperature, color, brightness and the like for a large screen and a small screen through controlling the spectrum wavelength range of backlight and matching OC types, and accurately adjusts each parameter of the large screen and the small screen through adjusting, thereby further adjusting the image quality difference of the two screens.
Description
Technical Field
The invention relates to the technical field of color temperature and color consistency of double-screen commercial liquid crystal display engineering machine display, in particular to a system realization method for the consistency of the image quality of double-screen liquid crystal display equipment.
Background
The double-screen display liquid crystal products are widely applied, and play roles in media, advertisements and instruction guidance in places such as elevator cabins, halls, buses, restaurants, advertisement guiding places and the like. The content is displayed on two independent screens of the whole machine in a double-screen display mode, so that the requirement on the consistency of the image quality of the two screens is high.
The color temperature of the display screen directly influences the sensory effect of a viewer, the color temperature is high, the picture is blue, the color temperature is low, and the picture is yellow, so when the color temperature of the two screens is large, the color shift directions of the two screens are different, and the phenomenon that one screen displays yellow and the other screen displays blue appears subjectively.
Meanwhile, the color vividness, the chromaticity view angle and the brightness view angle are also greatly different. If the chromaticity viewing angles of the two screens are different, the difference of color temperature and hue can be seen from the side; different liquid crystal panels have different chromaticity viewing angles and luminance transmittance characteristics. When two liquid crystal panels with liquid crystal molecule turning characteristics and liquid crystal molecule arrangement directions inconsistent are used from the view angle of the screen, when the human eyes watch from different angles of horizontal slant or vertical slant, the double screen can generate different degrees of tone change and saturation change on different colors, and serious color incompatibility and brightness difference are generated. When double-screen or multi-screen display is performed, subjective influence caused by display incompatibility is large, and the subjective influence is an important problem to be solved.
Disclosure of Invention
The invention provides a system realization method for the consistency of the image quality of a double-screen liquid crystal display device, which solves the problem of the consistency of the image quality of different display screens of the same whole machine, develops adjusting parameters aiming at respective color temperature, color and the like for a large screen and a small screen through the spectrum wavelength range control of backlight and OC type matching, and accurately adjusts the parameters of the large screen and the small screen through adjustment to further adjust the image quality difference of the two screens.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
a system implementation method for the consistency of the image quality of a double-screen liquid crystal display device comprises the following steps:
defining and configuring double-screen hardware parameters;
the split screen is independently provided with a color temperature adjustment item;
the split screen is independently configured with color saturation and tone setting adjustment items;
the split screen is independently configured with brightness setting adjustment items;
the hardware design parameters and the software parameters of the two screens are respectively stored and applied.
In some embodiments, the dual-screen hardware parameter configuration includes:
configuration of OC: the OC types of the double screens are kept consistent;
the liquid crystal OC is divided into an IPS screen and a VA screen, the IPS screen belongs to a hard screen, liquid crystal molecules are horizontally arranged, when the liquid crystal screen is pressed, as the whole liquid crystal molecules are horizontally arranged, the two poles are on the same surface, no obvious water ripple exists when the liquid crystal OC is pressed, the chromaticity visual angle is large, the horizontal color visual angle is generally more than 160 degrees, the transparent sense is good, and the response speed is high. The VA screen belongs to a soft screen, liquid crystal molecules are vertically arranged, water waves are obvious when being pressed, the chromaticity visual angle is low, the horizontal visual angle is low, generally about 50 degrees, according to experimental tests, the visual angle difference of the IPS screen and the VA screen on different colors is very large, and the difference of the color visual angles leads to great difference in image quality. The configuration of the OC is necessary and necessary to select the same type of OC in the first place, so that the same angle is seen to have consistent color deviation, consistent viewing angle and consistent response speed. The sensory consistency of the dual screen display in a large aspect is ensured. The types are consistent in OC matching.
Configuration of the light bar: parameters of the light bars on the double screens are kept consistent.
Because the liquid crystal display is a passive light emitting device, the liquid crystal display is lightened according to the backrest light source, the light bar is formed by combining a plurality of small LED lamps in series and is arranged on the back plate, the LED lamps have great influence on color and color temperature, and different LED lamps have different spectral characteristics and brightness characteristics. The lamps are divided into YAG powder common color gamut, KSF high color gamut, low blue light lamp strips and the like, and the color gamuts, red and blue performances of the lamp strips are greatly different. To ensure uniformity of the dual screen display in color, brightness and color temperature. Then consistency must be ensured in the parameters of the light bar. For the spectrum of the module, the three-color peak spectrum of the dual screen R, G, B is within 4 nm. Within this range, uniformity of the three primary colors of rg B and the color temperature can be ensured.
In some embodiments, maintaining parameters of the dual-screen light bar consistent refers to: for the spectrum of the module, the R, G, B tristimulus peak spectrum is within 4 nm.
In some embodiments, the split screen independently configures color temperature adjustment items, including: and configuring color temperature adjusting function menus on the respective screens aiming at the two screens displayed by the double screens respectively, and independently adjusting the respective screens according to the color temperature, wherein the setting range of the color temperature is 3500K-15000K, and the color temperature of the double screens is kept consistent.
Color temperature is an important index for measuring white display, and a low color temperature value such as 4500K can generate a phenomenon of white yellowing, and a high color temperature value 12000K can generate a phenomenon of white bluing. To ensure consistency of the color temperature of the dual screen, in addition to strict requirements on hardware, further adjustments on software are required to account for product differences. The color temperature adjusting function menu is developed on each screen aiming at two screens displayed by the double screens respectively, the respective screens are independently adjusted by the color temperature, the color temperature range is as wide as possible, and all modules can be effectively adjusted to target values. The color temperature setting range is 3500K-15000K, and in the range, the two screens can be enough to be adjusted in an integral consistent color temperature range.
In some embodiments, the split screen independently configures color saturation and hue setting adjustment items, including:
respectively configuring color saturation control functions on respective screens aiming at two screens of the double-screen display, wherein the color saturation setting range is 0-255; and the dual-screen color saturation is kept consistent.
Color saturation and hue are very critical display indicators in chromaticity. The color saturation represents the vivid and full degree of the color, and the higher the color saturation is, the more full and bright the image is; the lower the color saturation, the lighter and darker the color. The color saturation control function of each screen of the dual-screen display is developed independently, and the respective color saturation can be adjusted respectively. The color saturation setting range is 0-255. The range is wide enough to meet the requirement of adjusting the saturation in a large range and ensure that the saturation of the two display screens is consistent.
Tone adjustment functions are respectively configured on the two screens of the double-screen display, and the tone range is-50-0-50; when set to 0, this indicates that the hue is not adjusted, and when deviated from 0, the color shift can be adjusted by adjusting the hue, which is adjusted to reach the hue target value.
Hue is the phase of the adjustment color, representing to some extent the accuracy of the color. Hue deviation indicates that the hue has not been the color that is to be displayed originally, such as skin tone, and the hue can be adjusted to whether the skin tone is reddish or yellowish, and whether the red is reddish or reddish orange. When some colors of the two liquid crystal display screens are off-color, the color can be corrected through the tone, so that the consistency of the skin color and primary color display of the dual-screen display is achieved. The range of hues is-50-0-50. When set to 0, this indicates that the hue is not adjusted, and when deviated from 0, the target value can be adjusted by adjusting the hue.
In some embodiments, the split screen independently configures a brightness setting adjustment item, including:
the brightness range of the double-screen display is set to 0-255, and the brightness values of the double screens are kept consistent.
The brightness is a physical quantity representing the brightness of a screen, the higher the brightness value is, the brighter the screen is, the wider the display range is, the lower the brightness value is, the darker the screen is, the brightness range is set to be 0-255, and the brightness value of the double-screen display can be adjusted in a wide range within the brightness range, so that the brightness values of two sides are kept consistent.
In some embodiments, storing the hardware design parameters and the software parameters of the two screens separately includes:
and respectively storing parameters representing the two screens to form an image quality file, storing the image quality file in a code, reading the screen parameters corresponding to the corresponding modules when the computer is started to run, and calling out the image quality file corresponding to the running under the screen parameters.
On the basis of the previous four steps, parameters representing two screens are respectively stored to form image quality files, the image quality files are stored in codes, when the computer is started, screen parameters corresponding to corresponding modules are read first, and then the image quality files corresponding to the operation are called out under the screen parameters.
The system implementation method for achieving the consistency of the image quality of the double-screen liquid crystal display device has the advantages that the method comprises the following steps:
according to the technical scheme provided by the invention, through development and debugging of proper hardware parameters and independent image quality adjustment items of the double screens, the final effect can meet the consistency of the image quality of the double screens, the inconsistency of the display effects on the two sides is eliminated, the discomfort of eyes is reduced, on the other hand, the display effects show consistent angle effects from different angles, the display performance of the double-display commercial display product in a hall, an elevator room and a square is greatly improved, the advertisement and video effects are perfectly restored, and the advertisement effect and income are correspondingly increased.
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Fig. 1 is a flowchart of a system implementation method for image quality consistency of a dual-screen liquid crystal display device.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.
On the contrary, the application is intended to cover any alternatives, modifications, equivalents, and variations that may be included within the spirit and scope of the application as defined by the appended claims. Further, in the following detailed description of the present application, specific details are set forth in order to provide a more thorough understanding of the present application. The present application will be fully understood by those skilled in the art without a description of these details.
A system implementation method for image quality consistency of a dual-screen liquid crystal display device according to an embodiment of the present application will be described in detail below with reference to fig. 1. It is noted that the following examples are only for explaining the present application and are not limiting of the present application.
The color temperature of the liquid crystal television is determined by the light source characteristics of the module OC and the backlight light bar, but because the size of the double-screen large screen is different from that of the small screen, the OC and the backlight light source can bring display differences due to different manufacturers, materials and batches, and are mainly reflected in the color temperature, the color and the brightness.
As shown in fig. 1, a system implementation method for image quality consistency of a dual-screen liquid crystal display device includes the following steps:
the invention provides a commercial display device with double screens to achieve consistency of image quality, and in order to make the purposes, technical schemes and advantages of the invention more clear, the following description of the specific embodiments of the invention will be made clearly and completely.
Firstly, OC categories of two screens are matched, and the two screens are of the same category, such as IPS (in-plane switching) or VA (vertical alignment) screens, so that consistency in chromaticity visual angle, color and response time is ensured. And then performing color block matching on the backlight lamp bar, respectively testing the peak wavelength values of R, G, B three colors of the first screen and the second screen of the dual-screen television, and when the peak wavelength values of the two screens differ by more than 4nm, re-performing color block adjustment, wherein the color block adjustment can directly adjust x y coordinates to influence white color temperature and color tone, performing spectral analysis until the R, G, B peak wavelength error value of the two screens is within a range of 4nm (such as the peak wavelength value between the first screen R1 and the second screen R2 is within a range of +/-2.5 nm, and G1 and G2, and B1 and B2 are the same), if the error exceeds 2.5nm, white balance metamerism problem can occur, namely the coordinates are the same when measured by using an optical instrument, but the human eyes look with larger color temperature and color difference.
And secondly, preheating the double-screen liquid crystal display and the instrument after the two screens of the double-screen liquid crystal display television meet the requirement of the first step. The purpose of the preheating of the whole television is to slowly decrease the brightness and the color coordinates of the screen along with the temperature rise according to the temperature optical characteristics of the screen and the LED lamp, and the brightness and the color coordinates reach a stable state after 48 hours of continuous preheating. The instrument is preheated for 1 hour, so that the states of the instrument are fully reset, zero correction and thermal stability are guaranteed, and the test result is accurate.
And thirdly, after the second step of full aging and stabilization, the optical parameters reach a stable state, the expression trend of the color temperatures are the same, then the color temperature functions developed for the double screens are respectively debugged, the color temperature debugging design range is 3500K-15000K, the wide-range design is realized, and when the color temperatures of the two screens are produced in batches because of individual differences of materials, the two screens can be respectively debugged in a targeted mode and are stored independently until the color temperatures at the two sides are consistent. Color temperature is particularly important, white is the ground color of a picture, plays a vital role in picture quality consistency, and white influences the tone display accuracy of other colors such as red, green and blue skin colors, so white color temperature is a vital step. The color temperature adjustment is adjusted until the two screens differ by within 300 k.
Fourth, on the basis of the third step, after the white color temperature reaches consistency, consistency adjustment of brightness is carried out. The brightness influences the brightness of the image, and the brightness debugging function is developed for the double screens respectively, and the double screens are stored in a split screen mode. The brightness range design value is between 180 and 350nits, the user adjusting range is mapped to 0 to 255, and the brightness of the corresponding screen can be adjusted by adjusting the user range mapping value, so that the brightness ranges of the large screen and the small screen are within 50 nits. The overall brightness remains uniform.
And fifthly, respectively debugging the color saturation and the color tone of the two screens on the basis of the fourth step. The color saturation determines the shade and vividness of the color, the higher the saturation, the more full and vivid the color, but the higher the saturation, the higher-order color levels can be adhered and separated after the saturation is saturated, the color gradation and detail of the highlight part can not be distinguished, the definition and resolution of the color can be reduced, so the adjustment range of the color saturation of the two screens is set to be between 135 and 190. Beyond this range, or insufficient saturation, the light bar needs to be adjusted or the OC needs to be replaced, increasing the color gamut, to increase the color saturation.
The color tone determines the color accuracy, the color tone is adjusted to the position of the color, such as red, if the color is not yellow or purple, in the scheme, the total range of the color tone is set to be-50, the range is wide, the negative direction is yellow, the positive direction represents the purple direction, the adjusting range is generally set to be-10, fine adjustment is carried out in the range, on one hand, the color tone of two screens can be adjusted to be in a consistent state, on the other hand, the color level can be ensured, and the color distortion is avoided.
And sixthly, respectively storing the hardware design parameters and the software parameters of the two screens for application. When the whole machine program runs, the good image quality consistency of the double-screen liquid crystal display is achieved through the matching running of hardware parameters and software parameters. When the screen is obviously different, the first step is carried out again. So as to ensure the consistency of the double-screen display image quality of all batch products.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (7)
1. The system implementation method for the consistency of the image quality of the double-screen liquid crystal display device is characterized by comprising the following steps:
defining and configuring double-screen hardware parameters;
the split screen is independently provided with a color temperature adjustment item;
the split screen is independently configured with color saturation and tone setting adjustment items;
the split screen is independently configured with brightness setting adjustment items;
the hardware design parameters and the software parameters of the two screens are respectively stored and applied.
2. The method for implementing the system for achieving the consistency of the image quality of the dual-screen liquid crystal display device according to claim 1, wherein the dual-screen hardware parameter configuration comprises the following steps:
configuration of OC: the OC types of the double screens are kept consistent;
configuration of the light bar: the spectral parameters of the light bars on the double screens are kept consistent.
3. The method for implementing the system for implementing the consistency of the image quality of the dual-screen liquid crystal display device according to claim 2, wherein the parameters of the lamp bars on the dual-screen are consistent: for the spectrum of the module, the R, G, B tristimulus peak spectrum is within 4 nm.
4. The method for implementing the system for achieving the consistency of the image quality of the dual-screen liquid crystal display device according to claim 2, wherein the split-screen independent configuration of the color temperature adjustment item comprises the following steps: and configuring color temperature adjusting function menus on the respective screens aiming at the two screens displayed by the double screens respectively, and independently adjusting the respective screens according to the color temperature, wherein the setting range of the color temperature is 3500K-15000K, and the color temperature of the double screens is kept consistent.
5. The system implementation method for image quality consistency of a dual-screen liquid crystal display device according to claim 2, wherein the split-screen independently configures color saturation and tone setting adjustment items, and comprises:
respectively configuring color saturation control functions on respective screens aiming at two screens of the double-screen display, wherein the color saturation setting range is 0-255; and the dual-screen color saturation is kept consistent.
Tone adjustment functions are respectively configured on the two screens of the double-screen display, and the tone range is-50-0-50; when set to 0, it means that the tone is not adjusted, and when deviated from 0, the tone can be adjusted to the target value by adjusting the tone.
6. The system implementation method for image quality consistency of a dual-screen liquid crystal display device according to claim 2, wherein the split-screen independent configuration of the brightness setting adjustment items comprises:
the brightness range of the double-screen display is set to 0-255, and the brightness values of the double screens are kept consistent.
7. The method for implementing the system for implementing the consistency of the image quality of the dual-screen liquid crystal display device according to claim 2, wherein the storing and applying the hardware design parameters and the software parameters of the two screens respectively comprises:
and respectively storing parameters representing the two screens to form an image quality file, storing the image quality file in a code, reading the screen parameters corresponding to the corresponding modules when the computer is started to run, and calling out the image quality file corresponding to the running under the screen parameters.
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| CN110413248A (en) * | 2019-08-21 | 2019-11-05 | 京东方科技集团股份有限公司 | Splicing screen debugging method, splicing screen and splicing wall |
| CN112687243A (en) * | 2021-01-14 | 2021-04-20 | 广州朗国电子科技有限公司 | Spliced screen color adjusting method and system and storage device |
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- 2023-03-15 CN CN202310248849.XA patent/CN116312410A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160012786A1 (en) * | 2014-07-11 | 2016-01-14 | Boe Technology Group Co., Ltd. | Display system |
| CN208590061U (en) * | 2018-07-02 | 2019-03-08 | 上海纬而视视讯科技有限公司 | A kind of color adjustment system of mosaic screen |
| CN110413248A (en) * | 2019-08-21 | 2019-11-05 | 京东方科技集团股份有限公司 | Splicing screen debugging method, splicing screen and splicing wall |
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