CN114333730B - Device and method for debugging LCM GAMMA and FLICKER - Google Patents
Device and method for debugging LCM GAMMA and FLICKER Download PDFInfo
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Abstract
The invention relates to the technical field of LCM, in particular to a device and a method for debugging LCM GAMMA and FLICKER, which comprises a computer device, a display screen, a point screen signal source device and a color analyzer; the invention takes a computer device as a control center, LCM debugging software of the computer device is connected with a point screen signal source device and a color analyzer, the point screen signal source device is connected with a display screen, a key switch of a switch key module of the point screen signal source device is pressed down, the display screen is lightened, and the LCM debugging software of the computer device is started after an optical lens of the color analyzer is aligned to the screen center of the display screen. By utilizing the device, the GAMMA-based product with the over-specification GAMMA is readjusted and burned to be a qualified product by using a dynamic GAMMA debugging method on the premise that the FLCIKER value is qualified, the cost loss of a company is reduced, and the production efficiency is improved.
Description
Technical Field
The invention relates to the technical field of LCM, in particular to a device and a method for debugging LCM GAMMA and FLICKER.
Background
At present, the display effect adjustment of a display liquid crystal screen mainly comprises GAMMA gray scale image transition adjustment and FLCIKER adjustment, the GAMMA adjustment is divided into static and dynamic states, the gray scale image transition effect is adjusted by setting multiple groups of parameters of a GAMMA register, the positive and negative voltages of liquid crystals of the two methods are set by adopting symmetric GAMMA code parameters, static GAMMA codes are codes corresponding to all LCM products, the GAMMA parameter values cannot be modified, GAMMA curves can cause the display effect to be poor due to the difference of LCM, and even some display effects can exceed the specification and become defective products; the dynamic GAMMA code is that software can call a program library of a drive IC to calculate the parameter value of a maximum GAMMA register according to the characteristics of the product to adjust a GAMMA curve so as to ensure that the display effect is optimal; the FLCIKER adjustment is to adjust the flicker degree of the LCM picture, and is controlled by the VCOM parameter value of the LCM, the debugging device can adjust the FLCIKER value within the specification range by adjusting the VCOM value, and then the adjusted code is burned into the drive IC of the LCM. Due to the process and material differences of different types of LCDs, there are some types of LCDs that require adjusting the GAMMA binding voltage parameter associated with the G127 gray level or the G128 gray level associated with the FLICKER to be asymmetric in order to ensure that the FLICKER value is stable within the range, and this process flow modification has the following problems in the process of mass production of products:
1. if a dynamic GAMMA debugging method is adopted, the GAMMA value of each LCM is ensured to be within the specification, and the value returned by the program library of the drive IC can only be a symmetrical value, so that the effect of the FLCIKER adjusted under the condition of the symmetrical value has the risk of deviation beyond the specification range;
2. if the FLCIKER value is qualified, a group of GAMMA voltage parameters need to be adjusted into asymmetric values, a debugging program cannot enable dynamic GAMMA adjustment gray scale transition, only whether the GAMMA value is qualified or not can be tested by a static method, and the qualified GAMMA value is subjected to next functional test, so that part of GAMMA value is changed into a defective product due to the fact that the GAMMA value exceeds the range, material waste is caused, the cost of a company is increased, and LCM manufacturing companies can ensure that the FLCIKER value is qualified and screen out the qualified product by using the static GAMMA, and defective products are inevitable to appear.
Disclosure of Invention
The invention provides a device and a method for debugging LCM GAMMA and FLICKER, which are novel in structure and ingenious in design, wherein when the device is used, a computer device is used as a control center, LCM debugging software of the computer device is connected with a point screen signal source device and a color analyzer, the point screen signal source device is connected with a display screen, a key switch of a switch key module of the point screen signal source device is pressed down to light up the display screen, an optical lens of the color analyzer is aligned with the center of the screen of the display screen, LCM debugging software of the computer device is started, optical debugging and burning of the display screen are automatically completed under the design of the device, and then the key switch of the switch key module of the point screen signal source device is pressed down to power off the display screen; by utilizing the device, the GAMMA-based product with the over-specification GAMMA is readjusted and burned to be a qualified product by using a dynamic GAMMA debugging method on the premise that the FLCIKER value is qualified, the cost loss of a company is reduced, and the production efficiency is improved.
In order to solve the technical problems, the invention adopts the following technical scheme:
the invention provides a device for debugging LCM GAMMA and FLICKER, which comprises a computer device, a display screen, a point screen signal source device and a color analyzer; the computer device is used for operating LCM debugging software and controlling the picture switching of the point screen signal source device, controlling the color analyzer to collect optical data, and controlling the point screen device to burn debugged codes into the drive IC after the optical data is analyzed;
the point screen signal source device receives a screen switching instruction sent by LCM debugging software of the computer device, and drives the display screen to display a corresponding picture to the color analyzer to test optical data according to the instruction;
and the color analyzer is used for receiving the signal of the computer device, testing the optical data of the display screen displaying the corresponding picture according to the requirement of the computer device, and returning the optical data to the LCM debugging software of the computer device for debugging.
The point screen signal source device comprises a power supply module, a display signal processing module, a data storage module, a voltage and current setting module, a peripheral interface module, a switch key module, an LCM signal interface, a power interface and a switch module, wherein the data storage module, the voltage and current setting module, the peripheral interface module, the switch key module, the LCM signal interface, the power interface and the switch module are respectively connected with the display signal processing module, and the power supply module is connected with the power interface and the switch module.
The computer device is connected with the point screen signal source device and the color analyzer through the serial port line.
Wherein the color analyzer is CA310.
The invention also provides a method for debugging LCM GAMMA and FLICKER, which comprises the following steps:
a, a data processing center is connected with a color analyzer and a signal source;
b, lighting the liquid crystal display screen, aligning a color analyzer to the central area of the liquid crystal display screen, and starting a test burning link;
c, judging whether the brightness, the color coordinate and the contrast temperature of the liquid crystal display screen meet preset threshold values, if so, carrying out the next step, and if not, judging the liquid crystal display screen to be a defective product;
d, starting GAMMA dynamic adjustment, controlling a signal source to switch gray scale pictures bound by different GAMMA voltages, controlling a color analyzer to measure brightness and color coordinate data of gray scales, and transmitting the data back to a data processing center, wherein the data processing center synchronously records GAMMA values under the gray scales by calculating register voltage parameters of each binding point, judges whether the GAMMA values meet a preset threshold value, performs the next step if the GAMMA values meet the preset threshold value, and judges that the GAMMA values are defective if the GAMMA values do not meet the preset threshold value;
e, taking the calculated GAMMA value of the G127 or G128 gray picture related to FLICKER as a basis for adjusting the asymmetric GAMMA voltage;
f, changing GAMMA register parameters influencing FLICKER effect into asymmetric parameters, testing the brightness value of the point by a color analyzer, transmitting data back to a data processing center to calculate a GAMMA value, comparing whether a new adjustment value is close to a value reserved during dynamic adjustment, if the value difference exceeds a preset threshold value, adding 1 or subtracting 1 from the value of the asymmetric gray scale, and testing GAMMA until the value difference meets the condition that the value difference is lower than the preset threshold value;
g, after confirming the GAMMA value of the asymmetric point, adjusting the VCOM value to adjust the FLICKER to the minimum hundred common ratio value, and obtaining the maximum VCOM value;
h, after the effect of the display screen is confirmed, the signal source executes the code burning function of the display screen;
and I, completing burning, and powering off the display screen.
The invention has the beneficial effects that:
the invention has novel structure and ingenious design, when in use, the computer device is used as a control center, LCM debugging software of the computer device is connected with the point screen signal source device and the color analyzer, the point screen signal source device is connected with the display screen, a key switch of a switch key module of the point screen signal source device is pressed down to light up the display screen, and after an optical lens of the color analyzer is aligned with the screen center of the display screen, the LCM debugging software of the computer device is started, under the design of the device, the optical debugging and burning of the display screen are automatically completed, and then the key switch of the switch key module of the point screen signal source device is pressed down to power off the display screen; by utilizing the device, the GAMMA-based product with the over-specification GAMMA is readjusted and burned to be a qualified product by using a dynamic GAMMA debugging method on the premise that the FLCIKER value is qualified, the cost loss of a company is reduced, and the production efficiency is improved.
Drawings
Fig. 1 shows the structure of example 1 of the present invention.
Fig. 2 is a hardware circuit block diagram of embodiment 1 of the present invention.
Fig. 3 is a flowchart of embodiment 2 of the present invention.
The reference numerals in fig. 1 to 3 include:
1. a color analyzer; 2. a computer device; 3. a point screen signal source device; 4. a display screen; 5. and a power supply module.
Detailed Description
In order to facilitate understanding of those skilled in the art, the present invention will be further described with reference to the following examples and drawings, which are not intended to limit the present invention. The present invention is described in detail below with reference to the attached drawings.
Example 1
In embodiment 1, as shown in fig. 1 to 2, an apparatus for debugging LCM gama and FLICKER includes a computer device 2, a display screen 4, a dot screen signal source device 3 and a color analyzer 1; wherein,
the computer device 2 is used for operating LCM debugging software and controlling the picture switching of the point screen signal source device 3, controlling the color analyzer 1 to collect optical data, and controlling the point screen device to burn the debugged codes into the drive IC of the display screen 4 after the optical data is analyzed;
the point screen signal source device 3 receives a screen switching instruction sent by LCM debugging software of the computer device 2, and drives the display screen 4 to display a corresponding picture to the color analyzer 1 to test optical data according to the instruction;
the color analyzer 1 receives the signal of the computer device 2, tests the optical data of the corresponding picture displayed by the display screen 4 according to the requirement, and returns the optical data to the LCM debugging software of the computer device 2 for debugging.
The point screen signal source device 3 comprises a power supply module 5, a display signal processing module, a data storage module, a voltage and current setting module, a peripheral interface module, a switch button module, an LCM signal interface, a power supply interface and a switch module, wherein the data storage module, the voltage and current setting module, the peripheral interface module, the switch button module, the LCM signal interface, the power supply interface and the switch module are respectively connected with the display signal processing module, and the power supply module 5 is connected with the power supply interface and the switch module.
Specifically, the invention has novel structure and ingenious design, when in use, the computer device 2 is used as a control center, LCM debugging software of the computer device 2 is connected with the point screen signal source device 3 and the color analyzer 1, the point screen signal source device 3 is connected with the display screen 4, a key switch of a switch key module of the point screen signal source device 3 is pressed down to light up the display screen 4, and after an optical lens of the color analyzer 1 is aligned with the screen center of the display screen 4, the LCM debugging software of the computer device 2 is started, under the design of the device, optical debugging and burning of the display screen 4 are automatically completed, and then the key switch of the switch key module of the point screen signal source device 3 is pressed down to power off the display screen 4; by utilizing the device, the GAMMA product with the over-specification GAMMA can be readjusted and burned to be a qualified product by using a dynamic GAMMA debugging method on the premise that the FLCIKER value is qualified, so that the cost loss of a company is reduced, and the production efficiency is improved.
The invention needs the mutual matching of hardware and software, the hardware is connected through the peripheral interface module, and then all optical debugging work is completed through software control.
In this embodiment, the computer device 2 is connected to the screen signal source device 3 and the color analyzer 1 through a serial port line. Wherein the model number of the color analyzer 1 is CA310.
Example 2
As shown in fig. 3, this embodiment 2 further provides a method for debugging LCM gama and FLICKER, including the following steps:
a, a data processing center is connected with a color analyzer 1 and a signal source; wherein, the data processing center can be a computer device 2; the computer device 2 is connected with the color analyzer 1 and the point screen signal source device 3 through serial port lines; the computer device 2 is provided with LCM debugging software;
b, after the liquid crystal display screen 4 is lightened, the color analyzer 1 is aligned to the central area of the liquid crystal display screen 4, and then LCM debugging software is clicked to start a test burning link;
c, judging whether the brightness, the color coordinate and the contrast temperature of the liquid crystal display screen 4 meet preset threshold values or not, if so, performing the next step, and if not, judging the liquid crystal display screen to be a defective product;
d, starting GAMMA dynamic adjustment, controlling a signal source to switch gray scale pictures bound by different GAMMA voltages, controlling a color analyzer 1 to measure brightness and color coordinate data of gray scales and transmitting the data back to a data processing center, synchronously recording GAMMA values under the gray scales by the data processing center through calculating register voltage parameters of each binding point, judging whether the GAMMA values meet a preset threshold value, if the GAMMA values meet the preset threshold value, performing the next step, and if the GAMMA values do not meet the preset threshold value, judging that the GAMMA values are defective products;
e, taking the calculated GAMMA value of the G127 or G128 gray picture related to FLICKER as a basis for adjusting the asymmetric GAMMA voltage;
f, changing GAMMA register parameters influencing FLICKER effect into asymmetric parameters, testing the brightness value of the point by the color analyzer 1, transmitting data back to the data processing center to calculate GAMMA value, comparing whether the new adjustment value is close to the value reserved during dynamic adjustment, if the value difference exceeds the preset threshold value, adding 1 or subtracting 1 from the value of the asymmetric gray scale, and testing GAMMA until the value difference meets the condition that the value difference is lower than the preset threshold value;
g, after confirming the GAMMA value of the asymmetric point, adjusting the VCOM value to adjust the FLICKER to the minimum hundred common ratio value, and obtaining the maximum VCOM value;
h, after the effect of the display screen 4 is confirmed, the signal source executes the code burning function of the display screen 4;
and I, completing the burning, and powering off the display screen 4.
Specifically, the method can ensure that the FLCIKER value is qualified, and the GAMMA-based debugging method is used to readjust and burn GAMMA-based products to qualified products, so that the cost loss of a company is reduced, and the production efficiency is improved.
Although the present invention has been described with reference to the above preferred embodiments, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (1)
1. A method for debugging LCM GAMMA and FLICKER is characterized by comprising the following steps:
a, a data processing center is connected with a color analyzer and a signal source;
b, lighting the liquid crystal display screen, aligning a color analyzer to the central area of the liquid crystal display screen, and starting a test burning link;
c, judging whether the brightness, the color coordinate and the contrast temperature of the liquid crystal display screen meet preset threshold values, if so, carrying out the next step, and if not, judging the liquid crystal display screen to be a defective product;
d, starting GAMMA dynamic adjustment, controlling a signal source to switch gray scale pictures bound by different GAMMA voltages, controlling a color analyzer to measure the brightness and color coordinate data of the gray scales and transmitting the data back to a data processing center, synchronously recording GAMMA values of the gray scales by the data processing center through calculating register voltage parameters of each binding point, judging whether the GAMMA values accord with a preset threshold value, if the GAMMA values accord with the preset threshold value, performing the next step, and if the GAMMA values do not accord with the preset threshold value, judging the GAMMA values to be defective products;
e, taking the calculated GAMMA value of the G127 or G128 gray picture related to FLICKER as a basis for adjusting the asymmetric GAMMA voltage;
f, changing GAMMA register parameters influencing FLICKER effect into asymmetric parameters, testing the brightness value of the point by a color analyzer, transmitting data back to a data processing center to calculate a GAMMA value, comparing whether a new adjustment value is close to a value reserved during dynamic adjustment, if the value difference exceeds a preset threshold value, simultaneously adding 1 or subtracting 1 from the value of the asymmetric gray scale, and testing GAMMA until the value difference meets the condition that the value difference is lower than the preset threshold value;
g, after confirming the GAMMA value of the asymmetric point, adjusting the VCOM value to adjust the FLICKER to the minimum hundred common ratio value, and obtaining the maximum VCOM value;
h, after the effect of the display screen is confirmed, the signal source executes the code burning function of the display screen;
and I, completing the burning and powering off the display screen.
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| CN100388348C (en) * | 2005-04-08 | 2008-05-14 | 浙江大学 | Automatic measurement and correction method and system for LCD GAMMA curve and color temperature |
| CN104809974B (en) * | 2015-04-22 | 2017-11-14 | 信利（惠州）智能显示有限公司 | The gamma and correct automatically white balance method and device of a kind of display device |
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