CN110910805A - Compensation adjusting device and compensation adjusting method of display screen - Google Patents
Compensation adjusting device and compensation adjusting method of display screen Download PDFInfo
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Abstract
The invention discloses a compensation adjusting device and a compensation adjusting method of a display screen, wherein the compensation adjusting device comprises a plurality of detection modules, the detection modules are respectively arranged corresponding to sub-pixels in the display screen, and the detection modules are used for detecting the brightness parameters of the corresponding sub-pixels; the display screen comprises a screen drive board, the processing terminal is used for reading the brightness parameters through the degradation information read-write board and the screen drive board, generating screening compensation data according to the brightness parameters and the initial brightness parameters of the corresponding sub-pixels, and transmitting the screening compensation data to the screen drive board through the degradation information read-write board; the screen driving board is used for adjusting and outputting the pixel data of the corresponding sub-pixels in the display screen according to the received screening compensation data and the received display data. Through the technical scheme of the invention, the display ghost shadow existing in the display screen is eliminated, and the service life of the display screen body is greatly prolonged.
Description
Technical Field
The embodiment of the invention relates to the technical field of display, in particular to a compensation adjusting device and a compensation adjusting method of a display screen.
Background
With the development of display technologies, the variety of display screens gradually increases, and the requirements of users on the display effect of the display screens, such as display colors and display saturation of the display screens, are higher and higher.
At present, the pressure of pixels arranged corresponding to the same area of a display screen is too large due to the fact that the same area of the display screen is lightened for a long time, the pixels are rapidly degraded, the pressure difference accumulated on the pixels for a long time causes the degradation degree of individual pixels to be different, the brightness difference captured by human eyes is generated, the display screen has a ghost display effect, and therefore the shadow display experience of a user is influenced.
Disclosure of Invention
In view of this, the embodiment of the present invention provides a compensation adjustment device and a compensation adjustment method for a display screen, which eliminate display ghost shadows existing in the display screen and greatly prolong the service life of a display screen body of the display screen.
In a first aspect, an embodiment of the present invention provides a compensation adjustment apparatus for a display screen, including:
the detection modules are respectively arranged corresponding to the sub-pixels in the display screen and are used for detecting the brightness parameters of the corresponding sub-pixels;
the display screen comprises a screen drive board, and the processing terminal is used for reading the brightness parameters through the degradation information read-write board and the screen drive board, generating screening compensation data according to the brightness parameters and the corresponding initial brightness parameters of the sub-pixels, and transmitting the screening compensation data to the screen drive board through the degradation information read-write board;
the screen driving board is used for adjusting and outputting the pixel data of the corresponding sub-pixels in the display screen according to the received screening compensation data and the received display data.
Further, the processing terminal is configured to obtain multiple sets of compensation data in the same display scene according to the brightness parameter and a stored brightness fitting comparison curve, and transmit the multiple sets of compensation data to the screen driving board through the degradation information reading and writing board;
the screen driving board is used for controlling the display screen to display a display picture which corresponds to the plurality of groups of compensation data and is superposed on the corresponding initial display picture;
the processing terminal is used for generating the screening compensation data according to the display comparison result of the plurality of display pictures.
Further, the compensation adjustment device further includes:
and the photographing module is used for photographing the plurality of display pictures and acquiring the display comparison results of the plurality of display pictures according to picture data acquired by photographing.
Further, the display scenes at least comprise a WRGB single-color picture display scene and 2nA level gray scale picture display scene; wherein n is the number of bits of the gray scale which can be displayed by the display screen.
Furthermore, the display screen further comprises a main board, and the main board is used for adjusting the generated display data according to the image data output by the processing terminal.
Further, the compensation adjustment device further includes:
the signal conversion board is used for converting a first control command output by the processing terminal into a second control command and outputting the second control command to the screen driving board through the display interface board, and the display interface board is used for adjusting the generated display data according to the image data output by the processing terminal.
In a second aspect, an embodiment of the present invention further provides a compensation adjustment method for a display screen, including:
the detection module detects the brightness parameter of the corresponding sub-pixel;
the processing terminal reads the brightness parameters through a degradation information read-write board and a screen drive board, generates screening compensation data according to the brightness parameters and the corresponding initial brightness parameters of the sub-pixels, and transmits the screening compensation data to the screen drive board through the degradation information read-write board;
and the screen driving board adjusts and outputs pixel data of corresponding sub-pixels in the display screen according to the received screening compensation data and the received display data.
Further, the generating, by the processing terminal, screening compensation data according to the luminance parameter and the initial luminance parameter of the corresponding sub-pixel includes:
the processing terminal obtains multiple groups of compensation data in the same display scene according to the brightness parameters and the stored brightness fitting comparison curve, and transmits the multiple groups of compensation data to the screen driving board through the degradation information reading and writing board;
the screen driving board controls the display screen to display a display picture which corresponds to the plurality of groups of compensation data and is superposed on the corresponding initial display picture;
and the processing terminal generates the screening compensation data according to the display comparison result of the plurality of display pictures.
Further, the adjusting, by the screen driving board, the pixel data output to the corresponding sub-pixels in the display screen according to the received screening compensation data and the received display data includes:
the screen driving board acquires a compensation area needing data compensation in the display screen;
when the sub-pixels in the compensation area are driven, the screen driving board adjusts and outputs pixel data of the corresponding sub-pixels in the compensation area according to the sum of the screening compensation data and the display data corresponding to the compensation area;
when the sub-pixels in the non-compensation area are driven, the screen driving board adjusts and outputs pixel data of the corresponding sub-pixels in the non-compensation area according to the display data of the corresponding non-compensation area.
Furthermore, the display screen further comprises a main board, and the main board adjusts the generated display data according to the image data output by the processing terminal;
before the detection module detects the brightness parameter of the corresponding sub-pixel, the compensation adjustment method further includes:
and adjusting the mainboard to remove the image quality adjustment function of the mainboard.
The embodiment of the invention provides a compensation adjusting device of a display screen and a compensation adjusting method thereof, wherein the compensation adjusting device comprises a plurality of detection modules, a degradation information read-write board and a processing terminal, the detection modules are respectively arranged corresponding to sub-pixels in the display screen, the detection modules are used for detecting the brightness parameters of the corresponding sub-pixels, the processing terminal is used for reading the brightness parameters through the degradation information read-write board and a screen driving board, screening compensation data are generated according to the brightness parameters, the screening compensation data are transmitted to the screen driving board through the degradation information read-write board, the screen driving board is used for adjusting and outputting the pixel data of the corresponding sub-pixels in the display screen according to the received screening compensation data and the received display data, and thus, the processing terminal can judge the degradation degree of the corresponding sub-pixels according to the brightness parameters fed back by the detection modules by utilizing the processing terminal, the degradation read-write board and other external equipment, and the brightness parameter is compared with the stored original brightness parameter to obtain screening compensation data, and when the screen driving board controls the display screen to display, the pixel data of the sub-pixels transmitted to the sub-pixel degradation area is compensated to eliminate display ghost shadows of the display screen, so that the service life of the display screen body is greatly prolonged.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments or the background art of the present invention, the drawings needed to be used in the description of the embodiments or the background art will be briefly introduced below, and it is obvious that the drawings in the following description are schematic diagrams of some embodiments of the present invention, and for those skilled in the art, other solutions can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a compensation adjustment apparatus for a display screen according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a compensation adjustment apparatus for a display panel according to another embodiment of the present invention;
fig. 3 is a schematic structural diagram of a screen driving board according to an embodiment of the present invention;
fig. 4 is a schematic flowchart of a compensation adjustment method for a display screen according to an embodiment of the present invention;
fig. 5 is a schematic flowchart of a compensation adjustment method for a display screen according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures. Throughout this specification, the same or similar reference numbers refer to the same or similar structures, elements, or processes. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
Fig. 1 is a schematic structural diagram of a compensation adjustment apparatus of a display screen according to an embodiment of the present invention. As shown in fig. 1, the compensation adjustment apparatus for a display screen includes a plurality of detection modules (not shown in fig. 1), a degradation information reading/writing board 3 and a processing terminal 4, where the detection modules are respectively disposed corresponding to sub-pixels in the display screen 2, for example, a detection module is disposed corresponding to each sub-pixel in the display screen 2, and the detection modules are configured to detect brightness parameters of the corresponding sub-pixels. For example, the detecting module may be a current sensor, each sub-pixel includes an organic light emitting structure, the luminance parameter may be a driving current flowing through the organic light emitting structure, the detecting module, that is, the current sensor, detects a magnitude of the driving current flowing through the corresponding organic light emitting structure, a luminance of the organic light emitting structure directly depends on the magnitude of the driving current flowing through the organic light emitting structure, and the detecting module may obtain the luminance information of the corresponding sub-pixel by detecting the driving current flowing through the corresponding organic light emitting structure.
The display screen 2 comprises a screen drive board 5, the processing terminal 4 is connected with the screen drive board 5 in the display screen 2 through the degradation information read-write board 3, the processing terminal 4 can be a computer, for example, and corresponds to a television complete machine with a display ghost problem, a technician is required to open the shielding of the rear shell of the television complete machine, so that the screen drive board 5 in the display screen 2 is exposed, and then the degradation information read-write board 3 and the processing terminal 4 are properly connected. After the connection relationship is completed, the processing terminal 4 may read the detected brightness parameter through the degradation information read-write board 3 and the screen drive board 5, for example, the detection module feeds back the brightness parameter to the screen drive board 5 in the display screen 2, and the degradation information read-write board 3 reads the brightness parameter to the processing terminal 4.
After acquiring the brightness parameters corresponding to each sub-pixel in the display screen 2, the processing terminal 4 generates the screening compensation data according to the brightness parameters and the initial brightness parameters of the corresponding sub-pixel, for example, the initial brightness parameters of the corresponding sub-pixel may be the driving current flowing through the corresponding sub-pixel when each sub-pixel is uniformly displayed in the corresponding display scene when the display screen 2 stored in the screen drive board 5 of the display screen 2 is shipped, the initial brightness parameters of the corresponding sub-pixel stored in the screen control board 5 are stored in the processing terminal 4 through the degradation information read-write board 3, after the processing terminal 4 acquires the brightness data fed back by the detection module, the brightness data corresponding to the same sub-pixel, for example, the driving current is subtracted from the initial brightness parameters, for example, the stored standard driving current to obtain the difference value of the driving current, and generates the screening compensation data according to the calculated difference value, the processing terminal 4 writes the screening compensation data into the screen driving board 5 in the display screen 2 for storage through the degradation information reading-writing board 3.
The screen driving board 5 in the display screen 2 receives screening compensation data corresponding to the sub-pixels to be compensated, which is transmitted from the processing terminal 4 through the degradation information read-write board 3, and the screen driving board 5 receives display data obtained by decoding and the like of image data of a picture to be displayed, which is transmitted from the processing terminal 4, and the screen driving board 5 adjusts and outputs the pixel data of the corresponding sub-pixels in the display screen 2 according to the received screening compensation data and the display data.
For example, the processing terminal 4 acquires that the actual driving current corresponding to a certain sub-pixel of the afterimage area in the display screen 2 is a, the standard driving current corresponding to the sub-pixel when the sub-pixel performs uniform display is b, and b is greater than a, the difference between b and a is c, c is the screening compensation data obtained by the processing terminal 4, the screening compensation data are transmitted to a screen driving board 5 through a degradation information read-write board 3, the screen driving board 5 obtains the screening compensation data output by a processing terminal 4 and also receives display data corresponding to a picture to be displayed, when the screen driving board 5 drives the sub-pixels in the display screen 2 to emit light, the screen driving board 5 may obtain a corresponding data signal according to a driving current value obtained by adding a driving current corresponding to the screening compensation data c to a driving current corresponding to the subpixel in the display data, and transmit the corresponding data signal to the subpixel in the display screen 2 through a corresponding data signal line.
Thus, by using the processing terminal 4 and the external devices such as the degradation read-write board 3, the processing terminal 4 can judge the degradation degree of the corresponding sub-pixel according to the brightness parameter fed back by the detection module, and compare the brightness parameter with the stored original brightness parameter to obtain the screening compensation data, when the screen driving board 5 controls the display screen 2 to display, the pixel data transmitted to the sub-pixel in the degradation area of the sub-pixel is compensated, so as to avoid the problem that the display product can only be returned as an abnormal screen or returned to the factory when the ghost appears, the display screen can be, for example, an OLED (Organic Light Emitting Diode) display screen, which also avoids the phenomenon that the same area of the television screen is lighted for a long time due to the current Light Emitting characteristic of the OLED display screen itself so that the pressure of the pixels arranged in the area is too large, the pixels are rapidly degraded, and the degradation degree of individual pixels is different due to the pressure difference accumulated on the pixels for a long time, the brightness difference that human eyes can catch is produced, and then the ghost problem that appears, the ghost can be eliminated in the display product short time that has realized the ghost that appears, has promoted the life of the 2 screen bodies of display screen greatly.
Optionally, the processing terminal 4 is configured to obtain multiple sets of compensation data in the same display scene according to the brightness parameter and the stored brightness fitting comparison curve, and transmit the multiple sets of compensation data to the screen drive board 5 through the degradation information read-write board 3, where the screen drive board 5 is configured to control the display screen 2 to display a display picture in which the multiple sets of compensation data are superimposed on the corresponding initial display picture, and the processing terminal 4 is configured to generate the screening compensation data according to the display comparison results of the multiple display pictures.
Illustratively, the display scenes may include at least a WRGB monochrome screen display scene and 2nA gradation level picture display scene, n beingThe display screen 2 can display the bits of gray scale, that is, the display scenes at least comprise a white pure color display scene, a red pure color display scene, a green pure color display scene, a blue pure color display scene, and 2 corresponding to each single color pure color display scenenThe display scene of the gray scale picture is a 32-level gray scale picture display scene corresponding to each single-color pure-color display scene, for example, the number n of bits of the gray scale which can be displayed by the display screen 2 is equal to 5, and the display scene of the television is mainly a display scene of a WRGB single-color picture and a 2-level gray scale picturenThe combination of the display scenes of the gray scale pictures can simulate the actual display pictures of the television to the maximum extent, shorten the time for adjusting the ghost compensation of the display screen 2 and improve the efficiency for compensating the ghost of the display screen 2.
Specifically, after the processing terminal 4 acquires the luminance parameters fed back by the detection module, that is, the degradation information of each sub-pixel, through the degradation information read-write board 3 and the screen drive board 5, the afterimage restoration software in the processing terminal 4 analyzes and contrasts the difference of the degradation degrees of the sub-pixels in different display scenes, and calculates the driving current required for the uniform afterimage compensation restoration of each pixel in the display screen 2 by referring to the standard luminance parameters of the sub-pixels of the factory WRGB monochrome picture display scene and the 32 gray scale picture display scene transmitted from the screen drive board 5. The luminance of the sub-pixels is not only related to the driving current flowing through the sub-pixels, but also related to the aging degree of the sub-pixels, and because the aging degree or the degradation degree of different pixel points are different, the mapping relationship between the driving current flowing through the sub-pixels and the luminance of the sub-pixels has a certain difference, even for the same display scene of the same display screen 2, the processing terminal 4 can still generate a plurality of groups of compensation data through calculation, that is, a plurality of picture compensation schemes are generated.
For example, in the same display scene, in order to compare the luminance parameter fed back by the detection module with the standard luminance parameter of the display screen 2 when the display screen 2 leaves the factory, the processing terminal 4 statistically stores a plurality of luminance fitting curves, each luminance fitting curve includes a corresponding relationship between the driving current flowing through the sub-pixel when the display screen 2 leaves the factory and the luminance of the sub-pixel, and after the standard luminance to which the corresponding sub-pixel needs to be adjusted is confirmed, the standard driving current can be obtained by inquiring the corresponding luminance fitting curve, so that the comparison with the actual driving current fed back by the detection module is realized.
Because the processing terminal 4 needs to consider the gender and age of the tv watching users when obtaining the plurality of brightness fitting curves through statistics, the types of the programs that the tv watching users with different genders and ages enjoy watching are different, the colors of the display pictures corresponding to the display screens 2 of the programs with different genders and ages are different as a whole, the brightness fitting curves obtained through statistics according to the factors such as the gender or age of the users are different, the brightness of the sub-pixels is not only related to the driving current flowing through the sub-pixels, but also related to the aging degree of the sub-pixels, the aging degree of the sub-pixels corresponding to the home theater watched by the user, the aging degree of the sub-pixels corresponding to the gun theater watched by the user and the aging degree of the sub-pixels corresponding to the comprehensive programs watched by the user are different, so that a plurality of brightness fitting curves exist for the same display scene of the same display screen 2, the processing terminal 4 can obtain a group of compensation data according to the brightness parameters fed back by the detection module and each brightness fitting curve, that is, a picture compensation scheme is obtained, the processing terminal 4 stores a plurality of different brightness fitting curves, and even if the processing terminal 4 is directed at the same display scene of the same display screen 2, the processing terminal 4 can still generate a plurality of groups of compensation data through calculation, that is, a plurality of picture compensation schemes are generated.
Because the processing terminal 4 generates a plurality of picture compensation schemes by calculation, it is necessary to further compare and judge to screen out the optimal picture compensation scheme, the processing terminal 4 calculates a plurality of sets of compensation data, after obtaining a plurality of picture compensation schemes, the degradation information read-write board 3 transmits a plurality of groups of compensation data under different display scenes to the screen driving board 5, the screen driving board 5 controls the display screen 2 to display the display pictures corresponding to the plurality of groups of compensation data, the actual compensation effect of each picture compensation scheme can be analyzed and recorded through the subjective judgment of technicians on a plurality of pictures displayed by the display screen 2, the best picture compensation scheme under the current display scene is selected from the actual compensation effects, the processing terminal 4 compares the actual compensation effects with the actual compensation effects according to the display of the plurality of pictures, that is, the analyzed optimal frame compensation scheme identifies the screening compensation data that is finally used to eliminate the degraded subpixel ghosting.
Illustratively, when the display screen 2 with the afterimages corresponds to the whole television, the screen images need to be subjectively analyzed in the follow-up work, and after the screen images are disassembled, the whole television still can be normally erected on a desktop, and the sight of workers is flush with the center of the television.
Optionally, the compensation adjustment apparatus further includes a photographing module (not shown in fig. 1), and the photographing module is configured to photograph the plurality of display frames and obtain display comparison results of the plurality of display frames according to the image data obtained by photographing. Specifically, different from the subjective judgment process of the foregoing personnel for multiple display frames, the display frames corresponding to multiple sets of compensation data displayed on the display screen 2 and controlled by the screen driving board 5 are photographed by using the photographing module, the photographing module obtains image data corresponding to different display frames, the photographing module can select an optimal frame compensation scheme in the current display scene through analysis of the image data obtained by photographing, and the processing terminal 4 confirms the screening compensation data finally used for eliminating the degraded sub-pixel residual image according to the display comparison results of multiple display frames, that is, the analyzed optimal frame compensation scheme.
Illustratively, after the processing terminal 4 confirms the optimal compensation scheme in each display scene, the processing terminal 4 writes the screened compensation data, i.e., the compensation data corresponding to the optimal compensation scheme, into the screen driving board 5 through the degradation information reading and writing board 3. After the display screen 2 is naturally cooled, whether the residual image compensation of the WRGB monochrome picture display scene and the 32-level gray scale picture display scene reaches the expected effect is confirmed again. If the expected effect is not met, returning the screened compensation data of the screen driving board 5 through the processing terminal 4, continuing subjective contrast analysis to confirm the optimal compensation scheme, and if the expected effect is achieved, completing the complete machine ghost recovery work.
Optionally, when the screen driver board 5 adjusts and outputs the pixel data of the corresponding sub-pixel in the display screen 2 according to the received screening compensation data and the received display data, the screen driver board 5 obtains a compensation area in the display screen 2, which needs to perform data compensation, when the sub-pixel in the compensation area is driven, the screen driver board 5 adjusts and outputs the pixel data of the corresponding sub-pixel in the compensation area according to a sum of the screening compensation data and the display data of the corresponding compensation area, and when the sub-pixel in the non-compensation area is driven, the screen driver board 5 adjusts and outputs the pixel data of the corresponding sub-pixel in the non-compensation area according to the display data of the corresponding non-compensation area.
Specifically, after the compensation process is completed, when the display panel 2 is turned on again to display the image, the image data corresponding to the image to be displayed output by the processing terminal 4 is not changed, that is, the display data received by the panel driving board 5 is not changed, but the display data is transmitted to the panel driving board 5, a compensation area in the display panel 2 that needs to be compensated for data may be stored in the panel driving board 5, when the sub-pixels in the compensation area are driven, the panel driving board 5 adjusts the pixel data output to the corresponding sub-pixels in the compensation area according to the sum of the filtered compensation data corresponding to the compensation area and the display data, that is, performs current compensation on the sub-pixels in the compensation area, when the sub-pixels in the non-compensation area are driven, the panel driving board 5 adjusts the pixel data output to the corresponding sub-pixels in the non-compensation area according to the display data corresponding to the non-compensation area, corresponding to the uncompensated area, the screen driving board 5 does not need to carry out compensation processing, so that the display picture of the whole machine is the same as the decoded output picture of the main chip, and the brightness of each pixel point in the display screen 2 is uniform, thereby eliminating the influence of the afterimage on the user viewing and prolonging the service life of the screen body.
Optionally, as shown in fig. 1, the display screen 2 further includes a main board 1, where the main board 1 is configured to adjust generated display data according to image data output by the processing terminal 4, the structure shown in fig. 1 is a compensation adjusting device after the television is completely disassembled, the main board 1 decodes the image data output by the processing terminal 4 to obtain corresponding display data and sends the corresponding display data to the screen drive board 5, and the screen drive board 5 controls the display screen 2 to display a corresponding picture according to the display data. The display screen 2 may further include a power supply board 8, and the power supply board 8 supplies power to the screen driving board 5 and the main board 1.
Fig. 2 is a schematic structural diagram of another compensation adjustment device for a display screen according to an embodiment of the present invention. The compensation adjustment device is different from the compensation adjustment device with the structure shown in fig. 1 in that, as shown in fig. 2, the compensation adjustment device further includes a signal conversion board 6 and a display interface board 7, the display screen 2 no longer includes a main board, the compensation adjustment device with the structure shown in fig. 2 corresponding to a single-screen module is a compensation adjustment device with the structure shown in fig. 2, the signal conversion board 6 and the display interface board 7 externally disposed on the display screen 2 implement the function of the main board 1 in the display screen 2 shown in fig. 1, the signal conversion board 6 is used to convert a first control command output by the processing terminal 4 into a second control command and output the second control command to the screen drive board 5 through the display interface board 7, for example, the signal conversion board 6 converts a computer software control command sent by the processing terminal 4 into a display interface board control command, the screen drive board 5 processes display data according to the received display interface board control command converted according to the computer software control command, the display interface board 7 is configured to adjust the generated display data according to the image data output by the processing terminal 4, that is, the display interface board 7 decodes the image data output by the processing terminal 4 to obtain corresponding display data, and sends the display data to the screen driving board 5.
Fig. 3 is a schematic structural diagram of a screen driving board according to an embodiment of the present invention. With reference to fig. 1 to fig. 3, the two interfaces a1 and a2 on the left side of the panel driving board 5 are power supply interfaces, the power supply board 8 provides 12V and 24V voltages through the two power supply interfaces a1 and a2, respectively, the 12V voltage is mainly used for the operation of the panel driving board 5, and the 24V voltage is mainly used for the lighting of the panel body. The two interfaces B1 and B2 on the right side of the screen driving board 5 are signal input interfaces, and are mainly used for display signal input, that is, for receiving display data. The four interfaces C1-C4 at the bottom of the screen driving board 5 are display signal output interfaces, and mainly transmit the input display signals to the screen body after processing for display by the screen body. An interface D1 on the top of the screen driving board 5 is a screen driving board debugging interface, where communication with the screen driving board 5 is mainly realized to read degradation information and write image compensation data, and the interface is connected with the degradation information reading and writing board 3.
It should be noted that fig. 3 only exemplarily shows the port arrangement of the screen driving board 5, the sizes of the display screens are different, and the port arrangement of the corresponding screen driving board 5 is different, and the specific arrangement of the port of the screen driving board is not specifically limited in the embodiment of the present invention.
The embodiment of the invention also provides a compensation adjustment method for the display screen, which can be executed by the compensation adjustment device for the display screen of the embodiment and can be applied to an application scene of compensation adjustment on the display screen. Fig. 4 is a schematic flowchart of a compensation adjustment method for a display screen according to an embodiment of the present invention. As shown in fig. 4, the compensation adjustment method of the display screen includes:
s110, the detection module detects the brightness parameters of the corresponding sub-pixels.
Specifically, the display screen 2 is controlled to enter a certain display scene, and the display scene at least comprises a WRGB monochrome picture display scene and 2nThe gray scale image displays a scene, n is the number of bits of the gray scale that can be displayed by the display screen 2, and the detection module detects the luminance parameter of the corresponding sub-pixel in the displayed scene, where the luminance parameter may be, for example, the driving current flowing through the corresponding sub-pixel.
Optionally, as shown in fig. 1, the display screen 2 further includes a main board 1, the main board 1 adjusts the generated display data according to the image data output by the processing terminal 4, and before the detection module detects the brightness parameter of the corresponding sub-pixel, the compensation adjustment method further includes adjusting the main board 1 to remove the image quality adjustment function of the main board 1.
Specifically, the compensation adjustment apparatus with the structure shown in fig. 1 corresponds to a complete television structure, the main board 1 in all the complete television structures has an image quality adjustment function, and the image quality adjustment function of the main board 1 interferes with the subjective analysis of image restoration during the ghost compensation, so that the main board 1 needs to be adjusted to remove the image quality adjustment function of the main board 1 before the detection module detects the brightness parameter of the corresponding sub-pixel, that is, the complete television system is set to remove the image quality adjustment effect, and the most original display state of the input signal of the main board 1 is restored, thereby preventing the image quality adjustment from interfering with the subjective analysis of image restoration. If the single panel of the structure shown in fig. 2 is used, the signal conversion board 6 and the display interface board 7 do not have the image quality adjustment function, and the image quality adjustment step can be omitted.
And S120, the processing terminal reads the brightness parameters through the degradation information read-write board and the screen drive board, generates screening compensation data according to the brightness parameters and the initial brightness parameters of the corresponding sub-pixels, and transmits the screening compensation data to the screen drive board through the degradation information read-write board.
Optionally, with reference to fig. 1 to 3, the processing terminal 4 generates the screening compensation data according to the luminance parameter and the initial luminance parameter of the corresponding sub-pixel, including the processing terminal 4 obtaining multiple sets of compensation data in the same display scene according to the luminance parameter and the stored luminance fitting comparison curve, and transmitting the multiple sets of compensation data to the screen driving board 5 through the degraded information reading and writing board 3; the screen driving board 5 controls the display screen 2 to display a display picture in which a plurality of groups of corresponding compensation data are superposed on a corresponding initial display picture; the processing terminal 4 generates screening compensation data according to the display comparison results of the plurality of display screens.
Optionally, the ghost image adjusting apparatus further includes a photographing module, before the processing terminal 4 generates the screening compensation data according to the display comparison result of the plurality of display pictures, the compensation adjusting method further includes photographing the plurality of display pictures by the photographing module, obtaining the display comparison result of the plurality of display pictures according to the picture data obtained by photographing, and generating the screening compensation data by the processing terminal 4 according to the display comparison result of the plurality of display pictures.
And S130, the screen driving board adjusts and outputs the pixel data of the corresponding sub-pixels in the display screen according to the received screening compensation data and the received display data.
Optionally, with reference to fig. 1 to 3, the adjusting, by the screen driver board 5, the pixel data output to the corresponding sub-pixel in the display screen 2 according to the received screening compensation data and the received display data includes acquiring, by the screen driver board 5, a compensation region in the display screen 2, where data compensation is required; when the sub-pixels in the compensation area are driven, the screen driving board 5 adjusts and outputs the pixel data of the corresponding sub-pixels in the compensation area according to the sum of the screening compensation data and the display data of the corresponding compensation area; when driving the sub-pixels in the non-compensation region, the panel driving board 5 adjusts the pixel data output to the corresponding sub-pixels in the non-compensation region according to the display data corresponding to the non-compensation region.
Fig. 5 is a schematic flowchart of a compensation adjustment method of a display screen according to an embodiment of the present invention. As shown in fig. 5, the compensation adjustment method of the display screen includes:
and S210, connecting the display screen, the degraded information reading-writing board and the processing terminal to the screen body with the residual image.
S220, the detection module extracts pixel degradation information.
And S230, generating a candidate optimal compensation picture by the processing terminal.
And S240, the processing terminal leads the candidate optimal compensation picture data into a screen driving board of the display screen through the degradation information reading and writing board.
And S250, comparing subjectively or photographing to test whether the compensation effect of the picture is optimal or not. If yes, go to S260; if not, go to S240.
And S260, the processing terminal leads the optimal compensation picture data into a screen driving board of the display screen through the degradation information reading and writing board.
And S270, subjectively testing whether the compensation effect meets the expectation or not. If yes, go to step S280, otherwise, go to step S290.
And S280, completing compensation.
And S290, restoring data by the screen driving board. The recovery data re-executes S240.
The compensation adjusting device provided by the embodiment of the invention can record the residual shadow restoration schemes of different degrees and different scenes in a networking manner, and continuously confirm and optimize the mapping relation between the pixel current and the pixel luminous brightness of the pixels with different degradation degrees through the data analysis of the background server, so that the residual shadow compensation scheme is reduced, and the residual shadow restoration efficiency is improved. In addition, according to the technical scheme of the embodiment of the invention, manual ghost recovery can be completed only by using one piece of computer repair software, one piece of picture degradation information reading and writing board and a complete machine generating ghost, the equipment is simple, a worker can complete ghost recovery within two hours, only the back shell of the complete machine needs to be disassembled, screen disassembly and factory return are not needed, the operation is fast, and the time and labor cost is low. In addition, the recovery software in the processing terminal designed by the embodiment of the invention can record the compensation data, optimize the compensation scheme through data analysis and learning, and improve the ghost recovery efficiency.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments illustrated herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A compensation adjustment apparatus for a display screen, comprising:
the detection modules are respectively arranged corresponding to the sub-pixels in the display screen and are used for detecting the brightness parameters of the corresponding sub-pixels;
the display screen comprises a screen drive board, and the processing terminal is used for reading the brightness parameters through the degradation information read-write board and the screen drive board, generating screening compensation data according to the brightness parameters and the corresponding initial brightness parameters of the sub-pixels, and transmitting the screening compensation data to the screen drive board through the degradation information read-write board;
the screen driving board is used for adjusting and outputting the pixel data of the corresponding sub-pixels in the display screen according to the received screening compensation data and the received display data.
2. The compensation adjustment device of claim 1, wherein the processing terminal is configured to obtain multiple sets of compensation data in the same display scene according to the brightness parameter and a stored brightness fitting comparison curve, and transmit the multiple sets of compensation data to the screen driving board through the degradation information reading and writing board;
the screen driving board is used for controlling the display screen to display a display picture which corresponds to the plurality of groups of compensation data and is superposed on the corresponding initial display picture;
the processing terminal is used for generating the screening compensation data according to the display comparison result of the plurality of display pictures.
3. The compensation adjustment device of claim 2, further comprising:
and the photographing module is used for photographing the plurality of display pictures and acquiring the display comparison results of the plurality of display pictures according to picture data acquired by photographing.
4. Compensation adjustment means according to claim 2 or 3, characterized in that the display scenes comprise at least a WRGB monochrome picture display scene and 2nA level gray scale picture display scene; wherein n is the number of bits of the gray scale which can be displayed by the display screen.
5. The compensation adjustment apparatus of claim 1, wherein the display screen further comprises a main board for adjusting the generated display data according to the image data output by the processing terminal.
6. The compensation adjustment device of claim 1, further comprising:
the signal conversion board is used for converting a first control command output by the processing terminal into a second control command and outputting the second control command to the screen driving board through the display interface board, and the display interface board is used for adjusting the generated display data according to the image data output by the processing terminal.
7. A compensation adjustment method of a display screen is characterized by comprising the following steps:
the detection module detects the brightness parameter of the corresponding sub-pixel;
the processing terminal reads the brightness parameters through a degradation information read-write board and a screen drive board, generates screening compensation data according to the brightness parameters and the corresponding initial brightness parameters of the sub-pixels, and transmits the screening compensation data to the screen drive board through the degradation information read-write board;
and the screen driving board adjusts and outputs pixel data of corresponding sub-pixels in the display screen according to the received screening compensation data and the received display data.
8. The compensation adjustment method of claim 7, wherein the generating, by the processing terminal, the filtered compensation data according to the luminance parameter and the initial luminance parameter of the corresponding sub-pixel comprises:
the processing terminal obtains multiple groups of compensation data in the same display scene according to the brightness parameters and the stored brightness fitting comparison curve, and transmits the multiple groups of compensation data to the screen driving board through the degradation information reading and writing board;
the screen driving board controls the display screen to display a display picture which corresponds to the plurality of groups of compensation data and is superposed on the corresponding initial display picture;
and the processing terminal generates the screening compensation data according to the display comparison result of the plurality of display pictures.
9. The compensation adjustment method of claim 7, wherein the adjusting, by the panel driving board, the pixel data output to the corresponding sub-pixels in the display panel according to the received screening compensation data and the received display data comprises:
the screen driving board acquires a compensation area needing data compensation in the display screen;
when the sub-pixels in the compensation area are driven, the screen driving board adjusts and outputs pixel data of the corresponding sub-pixels in the compensation area according to the sum of the screening compensation data and the display data corresponding to the compensation area;
when the sub-pixels in the non-compensation area are driven, the screen driving board adjusts and outputs pixel data of the corresponding sub-pixels in the non-compensation area according to the display data of the corresponding non-compensation area.
10. The compensation adjustment method according to claim 7, wherein the display screen further comprises a main board, and the main board adjusts the generated display data according to the image data output by the processing terminal;
before the detection module detects the brightness parameter of the corresponding sub-pixel, the compensation adjustment method further includes:
and adjusting the mainboard to remove the image quality adjustment function of the mainboard.
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