CN105679255A - LCD Gamma value burning method and burning device - Google Patents
LCD Gamma value burning method and burning device Download PDFInfo
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- CN105679255A CN105679255A CN201410680970.0A CN201410680970A CN105679255A CN 105679255 A CN105679255 A CN 105679255A CN 201410680970 A CN201410680970 A CN 201410680970A CN 105679255 A CN105679255 A CN 105679255A
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Abstract
The invention provides an LCD Gamma value burning method comprising the following steps: when an LCD is lighted up, acquiring RGB image information of the LCD under different power supply voltages; getting a current Gamma value curve value corresponding to the RGB image information according to the RGB image information; and burning the current Gamma value curve value into the chip of the LCD when the current Gamma value curve value is in conformity with a default Gamma value curve value. Accordingly, the invention provides an LCD Gamma value burning device. Through the technical scheme of the invention, color cast in the display colors of different LCDs is prevented, the consistency of the display colors of different LCDs is ensured, and the user experience in display effect is enhanced.
Description
Technical field
The present invention relates to display screen technology field, specifically, it relates to the Gamma value method for burn-recording of a kind of LCD display screen and the Gamma value burning device of a kind of LCD display screen.
Background technology
Gamma (gamma) comes from the response curve of CRT, namely reflects the parameter of the brightness of image of picture tube with the nonlinear relationship of the signal voltage of input electron beam gun. Relation as shown in Figure 1A.
Developing till now, the definition of Gamma is relatively extensive, in display screen debugging, it is possible to carry out Gamma correction, eliminates people's eye to the susceptibility of brightness and display screen display brightness to the difference between the susceptibility of voltage. Concrete trimming process is as shown in figs. ib and 1 c.
So, what Gamma represented is except people's eye to the susceptibility of brightness and display screen display brightness to the difference between the susceptibility of voltage, Gamma value sign difference degree between the two.
Along with the high speed development of the electronic products such as mobile handheld terminal, human consumer is also more and more higher to the requirement of the LCD display effect of terminal, the Show Color of LCD (liquid crystal display) also becomes one of focus, and the brightness of the sensitivity of color and color is also inseparable by people's eye.
As shown in Figure 2, the Show Color of traditional LCD is determined by color panel and backlight, and software only carries out Gamma debugging for several samples in debugging, and after having debugged, all LCD share a set of Gamma. To the color of control RGBW (red, green, blue and white), needing early stage the color of constantly collocation different panels and backlight to mate, the later stage is also eager to excel the colour consistency of tubulation control face glass and backlight.
The defect of existing scheme is, after a LCD has debugged, software shares a set of Gamma, when colour consistency control not good of face glass and backlight, Show Color colour cast can be caused, and in same model end product, otherness between Different Individual is also very big, affects Consumer's Experience.
It is thus desirable to a kind of new technical scheme, it is possible to preventing the colour cast problem of Show Color between Different L CD individuality, ensure the consistence of Show Color between Different L CD individuality, the display effect promoting user is experienced.
Summary of the invention
The present invention is just based on the problems referred to above, it is proposed that a kind of new technical scheme, it is possible to prevent the colour cast problem of Show Color between Different L CD individuality, ensures the consistence of Show Color between Different L CD individuality, and the display effect promoting user is experienced.
In view of this, the present invention proposes the Gamma value method for burn-recording of a kind of LCD display screen, comprising: when described LCD display screen is lighted, obtain the RGB picture information of described LCD display screen under different power voltage; The current Gamma value curve values corresponding with described RGB picture information is obtained according to described RGB picture information; When described current Gamma value curve values matches with the Gamma value curve values preset, described current Gamma value curve values is burnt in the chip of described LCD display screen.
When different LCD display screens is carried out Gamma value burning, owing to different LCD exists individual upper difference, therefore, even if being the identical Gamma value curve values of its burning, also can there is very big-difference in its actual Gamma value curve values tested out, thus cause the colour cast problem of Show Color between Different L CD individuality. in this technical scheme, it can be first different LCD display screen burning Gamma value curve values, and then test different LCD display screens when showing RGBW panel, current actual Gamma value curve values, contrast with default aim curve, correction, contrast again, when two Gamma value curve values are coincide, carry out automatic OTP (One-TimePassword again, dynamic password) it is burnt to chip internal, realize the uniqueness of Gamma between Different L CD individuality, prevent the colour cast problem of Show Color between Different L CD individuality, ensure the consistence of Show Color between Different L CD individuality, the display effect greatly promoting user is experienced.
Wherein, RGB picture information at least comprises 256 gray level information, so that Gamma value curve values can be obtained according to this RGB picture information.
In technique scheme, preferably, described method also comprises the step being undertaken described current Gamma value curve values and the Gamma value curve values preset contrasting, specifically comprise: when the target Gamma value corresponding with described default Gamma value curve values of the arbitrary Gamma value in described current Gamma value curve values is not identical, adjust described arbitrary Gamma value, when described arbitrary Gamma value is less than described target Gamma value, increase described arbitrary Gamma value, when described arbitrary Gamma value is greater than described target Gamma value, reduce described arbitrary Gamma value.
In technique scheme, it may be preferred that obtain the RGB picture information of described LCD display screen under different power voltage by optic probe.
In this technical scheme, obtain the numerical information of the picture obtained by optic probe sampling, and depict the gamma curve under this Gamma value, and contrast with standard gamma curve, and Gamma value can be adjusted, thus realize the uniqueness of Gamma between Different L CD individuality, prevent the colour cast problem of Show Color between Different L CD individuality, ensureing the consistence of Show Color between Different L CD individuality, the display effect greatly promoting user is experienced.
In technique scheme, it may be preferred that also comprise: according to the setting command received, described default Gamma value curve values is set.
In this technical scheme, manufacturer based on experience value or test value etc., can be arranged default Gamma value curve values, thus it can be used as standard Gamma value curve values.
In technique scheme, it may be preferred that described current RGB picture information: brightness information, contrast information, saturation ratio information and/or gray scale information.
In this technical scheme, RGB picture information is still not limited to brightness information, contrast information, saturation ratio information and/or gray scale information.
According to a further aspect in the invention, additionally provide the Gamma value burning device of a kind of LCD display screen, comprising: acquiring unit, when described LCD display screen is lighted, obtain the RGB picture information of described LCD display screen under different power voltage; Drawing unit, obtains the current Gamma value curve values corresponding with described RGB picture information according to described RGB picture information; Burning unit, when described current Gamma value curve values matches with the Gamma value curve values preset, is burnt to described current Gamma value curve values in the chip of described LCD display screen.
When different LCD display screens is carried out Gamma value burning, owing to different LCD exists individual upper difference, therefore, even if being the identical Gamma value curve values of its burning, also can there is very big-difference in its actual Gamma value curve values tested out, thus cause the colour cast problem of Show Color between Different L CD individuality. in this technical scheme, it can be first different LCD display screen burning Gamma value curve values, and then test different LCD display screens when showing RGBW panel, current actual Gamma value curve values, contrast with default aim curve, correction, contrast again, when two Gamma value curve values are coincide, carry out automatic OTP (One-TimePassword again, dynamic password) it is burnt to chip internal, realize the uniqueness of Gamma between Different L CD individuality, prevent the colour cast problem of Show Color between Different L CD individuality, ensure the consistence of Show Color between Different L CD individuality, the display effect greatly promoting user is experienced.
Wherein, RGB picture information at least comprises 256 gray level information, so that Gamma value curve values can be obtained according to this RGB picture information.
In technique scheme, preferably, when described adjustment unit is not identical specifically for target Gamma value that: the arbitrary Gamma value in described current Gamma value curve values is corresponding with described default Gamma value curve values, adjust described arbitrary Gamma value, when described arbitrary Gamma value is less than described target Gamma value, increase described arbitrary Gamma value, when described arbitrary Gamma value is greater than described target Gamma value, reduce described arbitrary Gamma value.
In technique scheme, it may be preferred that described acquiring unit comprises optic probe.
In this technical scheme, obtain the numerical information of the picture obtained by optic probe sampling, and depict the gamma curve under this Gamma value, and contrast with standard gamma curve, and Gamma value can be adjusted, thus realize the uniqueness of Gamma between Different L CD individuality, prevent the colour cast problem of Show Color between Different L CD individuality, ensureing the consistence of Show Color between Different L CD individuality, the display effect greatly promoting user is experienced.
In technique scheme, it may be preferred that also comprise: setting unit, according to the setting command received, described default Gamma value curve values is set.
In this technical scheme, manufacturer based on experience value or test value etc., can be arranged default Gamma value curve values, thus it can be used as standard Gamma value curve values.
In technique scheme, it may be preferred that described current RGB picture information: brightness information, contrast information, saturation ratio information and/or gray scale information.
In this technical scheme, RGB picture information is still not limited to brightness information, contrast information, saturation ratio information and/or gray scale information.
By above technical scheme, automatic OTP burning Gamma value, RGBW color is corrected, make when face glass and backlight colour consistency are difficult to management and control, it is possible to prevent the colour cast problem of Show Color between Different L CD individuality, ensureing the consistence of Show Color between Different L CD individuality, the display effect greatly promoting user is experienced.
Accompanying drawing explanation
Figure 1A to Fig. 1 C shows the schematic diagram of gamma curve in correlation technique;
Fig. 2 shows the module displays schematic diagram in correlation technique;
Fig. 3 shows the schema of the Gamma value method for burn-recording of LCD display screen according to an embodiment of the invention;
Fig. 4 shows the block diagram of the Gamma value burning device of LCD display screen according to an embodiment of the invention;
Fig. 5 shows the structure iron of the Gamma value burning device of LCD display screen according to one embodiment of present invention;
Fig. 6 shows the particular flow sheet of the Gamma value method for burn-recording of LCD display screen according to one embodiment of present invention.
Embodiment
In order to more clearly understand above-mentioned purpose, the feature and advantage of the present invention, below in conjunction with the drawings and specific embodiments, the present invention is further described in detail. It should be noted that, when not conflicting, the feature in the embodiment of the application and embodiment can combine mutually.
Set forth a lot of detail in the following description so that fully understanding the present invention; but; the present invention can also adopt other to be different from other modes described here to implement, and therefore, protection scope of the present invention is by the restriction of following public specific embodiment.
Fig. 3 shows the schema of the Gamma value method for burn-recording of LCD display screen according to an embodiment of the invention.
As shown in Figure 3, the Gamma value method for burn-recording of LCD display screen comprises according to an embodiment of the invention: step 302, when described LCD display screen is lighted, obtains the RGB picture information of described LCD display screen under different power voltage; Step 304, according to described RGB picture information, obtains the current Gamma value curve values that described RGB picture information is corresponding; Step 308, when described current Gamma value curve values matches with the Gamma value curve values preset, is burnt to described current Gamma value curve values in the chip of described LCD display screen.
When different LCD display screens is carried out Gamma value burning, owing to different LCD exists individual upper difference, therefore, even if being the identical Gamma value curve values of its burning, also can there is very big-difference in its actual Gamma value curve values tested out, thus cause the colour cast problem of Show Color between Different L CD individuality. in this technical scheme, it can be first different LCD display screen burning Gamma value curve values, and then test different LCD display screens when showing RGBW panel, current actual Gamma value curve values, contrast with default aim curve, correction, contrast again, when two Gamma value curve values are coincide, carry out automatic OTP (One-TimePassword again, dynamic password) it is burnt to chip internal, realize the uniqueness of Gamma between Different L CD individuality, prevent the colour cast problem of Show Color between Different L CD individuality, ensure the consistence of Show Color between Different L CD individuality, the display effect greatly promoting user is experienced.
Wherein, RGB picture information at least comprises 256 gray level information, so that Gamma value curve values can be obtained according to this RGB picture information.
In technique scheme, preferably, described method also comprises the step being undertaken described current Gamma value curve values and the Gamma value curve values preset contrasting, specifically comprise: when the target Gamma value corresponding with described default Gamma value curve values of the arbitrary Gamma value in described current Gamma value curve values is not identical, adjust described arbitrary Gamma value, when described arbitrary Gamma value is less than described target Gamma value, increase described arbitrary Gamma value, when described arbitrary Gamma value is greater than described target Gamma value, reduce described arbitrary Gamma value.
In technique scheme, it may be preferred that obtain the RGB picture information of described LCD display screen under different power voltage by optic probe.
In this technical scheme, obtain the numerical information of the picture obtained by optic probe sampling, and depict the gamma curve under this Gamma value, and contrast with standard gamma curve, and Gamma value can be adjusted, thus realize the uniqueness of Gamma between Different L CD individuality, prevent the colour cast problem of Show Color between Different L CD individuality, ensureing the consistence of Show Color between Different L CD individuality, the display effect greatly promoting user is experienced.
In technique scheme, it may be preferred that also comprise: according to the setting command received, described default Gamma value curve values is set.
In this technical scheme, manufacturer based on experience value or test value etc., can be arranged default Gamma value curve values, thus it can be used as standard Gamma value curve values.
In technique scheme, it may be preferred that described current RGB picture information: brightness information, contrast information, saturation ratio information and/or gray scale information.
In this technical scheme, RGB picture information is still not limited to brightness information, contrast information, saturation ratio information and/or gray scale information.
Fig. 4 shows the block diagram of the Gamma value burning device of LCD display screen according to an embodiment of the invention.
As shown in Figure 4, the Gamma value burning device 400 of LCD display screen, comprising: acquiring unit 402 according to an embodiment of the invention, when described LCD display screen is lighted, obtains the RGB picture information of described LCD display screen under different power voltage; Drawing unit 404, according to described RGB picture information, draws the current Gamma value curve values corresponding with described RGB picture information; Burning unit 408, when described current Gamma value curve values matches with the Gamma value curve values preset, is burnt to described current Gamma value curve values in the chip of described LCD display screen.
When different LCD display screens is carried out Gamma value burning, owing to different LCD exists individual upper difference, therefore, even if being the identical Gamma value curve values of its burning, also can there is very big-difference in its actual Gamma value curve values tested out, thus cause the colour cast problem of Show Color between Different L CD individuality. in this technical scheme, it can be first different LCD display screen burning Gamma value curve values, and then test different LCD display screens when showing RGBW panel, current actual Gamma value curve values, contrast with default aim curve, correction, contrast again, when two Gamma value curve values are coincide, carry out automatic OTP (One-TimePassword again, dynamic password) it is burnt to chip internal, realize the uniqueness of Gamma between Different L CD individuality, prevent the colour cast problem of Show Color between Different L CD individuality, ensure the consistence of Show Color between Different L CD individuality, the display effect greatly promoting user is experienced.
Wherein, RGB picture information at least comprises 256 gray level information, so that Gamma value curve values can be obtained according to this RGB picture information.
In technique scheme, preferably, also comprise: adjustment unit, described current Gamma value curve values and the Gamma value curve values preset are compared, and arbitrary Gamma value in described current Gamma value curve values target Gamma value corresponding with described default Gamma value curve values not identical time, adjust described arbitrary Gamma value, when described arbitrary Gamma value is less than described target Gamma value, increase described arbitrary Gamma value, when described arbitrary Gamma value is greater than described target Gamma value, reduce described arbitrary Gamma value.
In technique scheme, it may be preferred that described acquiring unit 402 comprises optic probe.
In this technical scheme, obtain the numerical information of the picture obtained by optic probe sampling, and depict the gamma curve under this Gamma value, and contrast with standard gamma curve, and Gamma value can be adjusted, thus realize the uniqueness of Gamma between Different L CD individuality, prevent the colour cast problem of Show Color between Different L CD individuality, ensureing the consistence of Show Color between Different L CD individuality, the display effect greatly promoting user is experienced.
In technique scheme, it may be preferred that also comprise: setting unit 410, according to the setting command received, described default Gamma value curve values is set.
In this technical scheme, manufacturer based on experience value or test value etc., can be arranged default Gamma value curve values, thus it can be used as standard Gamma value curve values.
In technique scheme, it may be preferred that described current RGB picture information: brightness information, contrast information, saturation ratio information and/or gray scale information.
In this technical scheme, RGB picture information is still not limited to brightness information, contrast information, saturation ratio information and/or gray scale information.
The technical scheme of the present invention is described in detail with specific embodiment below.
Fig. 5 shows the structure iron of the Gamma value burning device of LCD display screen according to one embodiment of present invention.
As shown in Figure 5, the Gamma value burning device 500 of LCD display screen according to one embodiment of present invention comprises: display module 502 (comprise display screen 5022 and LCD lights instrument 5024), treater module 504 (are equivalent to drawing unit, adjustment unit and burning unit, mainly carry out gamma curve contrast and the picture data processing to RGBW) and ADC sampling module (506 are equivalent to acquiring unit, the main RGBW picture information capturing display).
Display module 502 is mainly lighted instrument by LCD and is lighted by LCD display screen, and carries original RGBW picture information, and the display brightness needing change LCD according to treater module 504, captures Gamma for test.
Treater module 504 mainly obtains the numerical information of the picture obtained by optic probe sampling, and depict the gamma curve under this Gamma value, and contrast with standard gamma curve, and Gamma value can be adjusted, light, by LCD, the software that instrument realizes different Gamma and light LCD.
ADC sampling module 506 mainly captures information when LCD shows RGBW picture by optic probe, and carries out ADC sampling and carry and process to treater module 504.
Fig. 6 shows the particular flow sheet of the Gamma value method for burn-recording of LCD display screen according to one embodiment of present invention.
As shown in Figure 6, the idiographic flow of the Gamma value method for burn-recording of LCD display screen according to one embodiment of present invention comprises:
Step 602, lights instrument by LCD and is lighted by LCD and show RGBW picture.
Step 604, captures information when LCD shows RGBW picture by photoelectric probe, and carries out ADC sampling, export to treater module 504.
Step 606, treater module 504 changes service voltage, and is undertaken lighting LCD by LCD lighting jig, with the picture information obtained under different voltage.
Step 608, after treater module 504 gets the different brightness information of same picture, it is possible to depict corresponding gamma curve.
Step 610, contrasts the gamma curve depicted and standard gamma curve, judges whether both coincide, and when judged result is for being, enters step 612, otherwise enters step 614.
Step 612, if matching with standard gamma curve, then carries out burning Gamma value.
Step 614, if contrast standard gamma curve, occurs misfitting, and changes Gamma value, to adjust picture information.
By treater module 504, driving chip is continued OTP burning Gamma;
Respectively the picture of RGB tri-kinds of colors is carried out above-mentioned step 602 to step 614, the 3Gamma that burning RGB is corresponding.
More than it is described with reference to the accompanying drawings the technical scheme of the present invention, by the technical scheme of the present invention, automatic OTP burning Gamma value, RGBW color is corrected, make when face glass and backlight colour consistency are difficult to management and control, preventing the colour cast problem of Show Color between Different L CD individuality, ensure the consistence of Show Color between Different L CD individuality, the display effect greatly promoting user is experienced.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations. Within the spirit and principles in the present invention all, any amendment of doing, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. the Gamma value method for burn-recording of a LCD display screen, it is characterised in that, comprising:
When described LCD display screen is lighted, obtain the RGB picture information of described LCD display screen under different power voltage;
The current Gamma value curve values corresponding with described RGB picture information is obtained according to described RGB picture information;
When described current Gamma value curve values matches with the Gamma value curve values preset, described current Gamma value curve values is burnt in the chip of described LCD display screen.
2. the Gamma value method for burn-recording of LCD display screen according to claim 1, it is characterised in that, described method also comprises the step being undertaken described current Gamma value curve values and the Gamma value curve values preset contrasting, and specifically comprises:
When arbitrary Gamma value in described current Gamma value curve values target Gamma value corresponding with described default Gamma value curve values is not identical, adjust described arbitrary Gamma value, when described arbitrary Gamma value is less than described target Gamma value, increase described arbitrary Gamma value, when described arbitrary Gamma value is greater than described target Gamma value, reduce described arbitrary Gamma value.
3. the Gamma value method for burn-recording of LCD display screen according to claim 1, it is characterised in that, obtain the RGB picture information of described LCD display screen under different power voltage by optic probe.
4. the Gamma value method for burn-recording of LCD display screen according to claim 1, it is characterised in that, also comprise:
According to the setting command received, described default Gamma value curve values is set.
5. the Gamma value method for burn-recording of LCD display screen according to any one of claim 1 to 4, it is characterised in that,
Described current RGB picture information:
Brightness information, contrast information, saturation ratio information and/or gray scale information.
6. the Gamma value burning device of a LCD display screen, it is characterised in that, comprising:
Acquiring unit, when described LCD display screen is lighted, obtains the RGB picture information of described LCD display screen under different power voltage;
Drawing unit, obtains the current Gamma value curve values corresponding with described RGB picture information according to described RGB picture information;
Burning unit, when described current Gamma value curve values matches with the Gamma value curve values preset, is burnt to described current Gamma value curve values in the chip of described LCD display screen.
7. the Gamma value burning device of LCD display screen according to claim 6, it is characterised in that, also comprise:
Adjustment unit, described current Gamma value curve values and the Gamma value curve values preset are compared, and arbitrary Gamma value in described current Gamma value curve values target Gamma value corresponding with described default Gamma value curve values not identical time, adjust described arbitrary Gamma value, when described arbitrary Gamma value is less than described target Gamma value, increase described arbitrary Gamma value, when described arbitrary Gamma value is greater than described target Gamma value, reduce described arbitrary Gamma value.
8. the Gamma value burning device of LCD display screen according to claim 6, it is characterised in that, described acquiring unit comprises optic probe.
9. the Gamma value burning device of LCD display screen according to claim 6, it is characterised in that, also comprise:
Setting unit, according to the setting command received, arranges described default Gamma value curve values.
10. the Gamma value burning device of LCD display screen according to any one of claim 6 to 9, it is characterised in that,
Described current RGB picture information:
Brightness information, contrast information, saturation ratio information and/or gray scale information.
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| CN201410680970.0A CN105679255A (en) | 2014-11-21 | 2014-11-21 | LCD Gamma value burning method and burning device |
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| CN201410680970.0A CN105679255A (en) | 2014-11-21 | 2014-11-21 | LCD Gamma value burning method and burning device |
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| CN201410680970.0A Pending CN105679255A (en) | 2014-11-21 | 2014-11-21 | LCD Gamma value burning method and burning device |
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| CN109616070A (en) * | 2019-01-15 | 2019-04-12 | 成都中电熊猫显示科技有限公司 | Brightness adjusting method, liquid crystal display panel and the liquid crystal display of liquid crystal display panel |
| CN112102775A (en) * | 2020-09-11 | 2020-12-18 | Oppo广东移动通信有限公司 | Display device and brightness compensation method thereof |
| CN112885280A (en) * | 2021-01-22 | 2021-06-01 | 重庆惠科金渝光电科技有限公司 | Driving method and device of display device, display equipment and storage medium |
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