CN107424559B - Display control method and device of display equipment - Google Patents
Display control method and device of display equipment Download PDFInfo
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- CN107424559B CN107424559B CN201710729986.XA CN201710729986A CN107424559B CN 107424559 B CN107424559 B CN 107424559B CN 201710729986 A CN201710729986 A CN 201710729986A CN 107424559 B CN107424559 B CN 107424559B
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
Abstract
The invention provides a display control method of display equipment and the display equipment, wherein the display control method of the display equipment comprises the following steps: acquiring a brightness value corresponding to each color within a preset time period; calculating the display ratio of each color within a preset time period; determining a sensing mode of the display device according to the display ratio; and in the sensing mode, compensating the display data in a sensing mode corresponding to the sensing mode so that the display equipment displays the compensated display data. According to the display control method of the display device, the sensing mode of the display device is determined by calculating the display ratio of each color in the preset time period, and the display data is compensated by adopting the sensing mode corresponding to the sensing mode, so that the display device displays the compensated display data, the residual image caused by long-time large-area display of a certain color can be rapidly and effectively eliminated, and the quality of the displayed image is improved.
Description
Technical Field
The invention relates to the technical field of equipment manufacturing, in particular to a display control method of display equipment and the display equipment.
Background
In the field of display technology, Organic Light Emitting Diodes (OLEDs) are becoming the development direction of future display technologies due to their advantages of wide color gamut, wide viewing angle, thinness, lightness, low energy consumption, high contrast, flexibility, and the like. In the field of large-sized OLED display, an external compensation method is generally used to eliminate variations in the threshold voltage Vth and the mobility K of a driving Thin Film Transistor (TFT). Taking the four colors of RGBW as an example, as shown in fig. 1, the pixel in the mth row and nth column is taken as an example, each pixel is composed of a red sub-pixel R, a green sub-pixel G, a blue sub-pixel B and a white sub-pixel W, each sub-pixel is composed of a driving TFT T1, a switching TFT T2, a sensing TFT T3, a capacitor C1, a data line DL, a scan line GL1, a scan line GL2, an anode voltage ELVDD, a cathode voltage ELVSS and an OLED device, and a sensing line SL is shared by the RGBW sub-pixels.
The sensing mode of the external compensation pixel circuit is as follows: firstly, the threshold voltage Vth of the red sub-pixel driving TFT is detected1And mobility K1And secondly detecting the threshold voltage Vth of the green sub-pixel TFT2And mobility k2Then, the threshold voltage Vth of the blue sub-pixel driving TFT is detected3And mobility K3And finally detecting the threshold voltage of the white sub-pixel TFTVth4And mobility k4. And circularly detecting the red sub-pixel, the green sub-pixel, the blue sub-pixel and the white sub-pixel according to the rule.
However, in practice, the aging of different pixels varies from picture to picture (e.g., checkerboard pictures) over time. As shown in fig. 2, when a checkerboard image is displayed currently, after a period of time, the white sub-pixel has the most aged, and if the conventional sensing method is still used, the afterimage of the target color (white) cannot be eliminated quickly, which results in the degradation of the displayed image quality.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art.
Therefore, a first objective of the present invention is to provide a display control method for a display device, which determines a sensing mode of the display device by calculating a display ratio of each color within a preset time period, and then compensates display data in a sensing manner corresponding to the sensing mode, so that the display device displays the compensated display data, thereby quickly and effectively eliminating an afterimage caused by long-time large-area display of a certain color and improving the quality of a displayed image.
A second object of the invention is to propose a display device.
To achieve the above object, a display control method of a display device according to an embodiment of a first aspect of the present invention includes: acquiring a brightness value corresponding to each color within a preset time period; calculating the display ratio of each color in the preset time period; determining a sensing mode of a display device according to the display ratio; and in the sensing mode, compensating the display data by adopting a sensing mode corresponding to the sensing mode so as to enable the display equipment to display the compensated display data.
According to the display control method of the display device, the sensing mode of the display device is determined by calculating the display ratio of each color in the preset time period, and the display data is compensated by adopting the sensing mode corresponding to the sensing mode, so that the display device displays the compensated display data, the residual image caused by long-time large-area display of a certain color can be rapidly and effectively eliminated, and the quality of the displayed image is improved.
To achieve the above object, an embodiment of a second aspect of the present invention provides a display device, including:
the display device comprises a display panel, a time sequence controller, a source electrode driver, a grid electrode driver and a data memory, wherein the time sequence control comprises a data conversion unit, a sensing control unit, an algorithm compensation unit, a time sequence control unit and a data output unit;
wherein the sensing control unit is configured to:
acquiring a brightness value corresponding to each color within a preset time period;
calculating the display ratio of each color in the preset time period;
determining a sensing mode of a display device according to the display ratio; and
and in the sensing mode, compensating the display data in a sensing mode corresponding to the sensing mode so that the display equipment displays the compensated display data through the display panel.
According to the display device provided by the embodiment of the invention, the sensing mode of the display device is determined by calculating the display ratio of each color in the preset time period, and the display data is compensated by adopting the sensing mode corresponding to the sensing mode, so that the display device displays the compensated display data, the afterimage caused by long-time large-area display of a certain color can be rapidly and effectively eliminated, and the displayed picture quality is improved.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic circuit diagram of one pixel sensing according to the prior art;
FIG. 2 is a diagram illustrating the effect of a checkerboard picture according to the prior art;
fig. 3 is a schematic structural view of a display device according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a timing controller according to an embodiment of the present invention;
FIG. 5 is a diagram illustrating the sensing effect of a pixel according to the prior art;
fig. 6 is a flowchart of a display control method of a display apparatus according to an embodiment of the present invention;
FIG. 7 is a diagram illustrating a pixel sensing effect according to an embodiment of the invention;
fig. 8 is a schematic structural diagram of a display device according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
A display control method and apparatus of a display device according to an embodiment of the present invention are described below with reference to the drawings.
The display device can be an electronic device such as a mobile phone, a tablet computer and a television.
As shown in fig. 3, the display device may include a display panel 31, a timing controller 32, a source driver 33, a gate driver 34, and a data memory 35.
The Timing controller 32 reads the Data stored in the Data memory 35, receives the RGB Data input from the outside, the Timing Control signal Timing, and the sensing sensor Data output from the source driver 33, and generates the Data and the source Control signal scs (source Control signal) after calculation and compensation by algorithms such as calculation, conversion, and compensation, and outputs the Data and the source Control signal scs (source Control signal) to the source driver 33. The timing controller 32 generates a gate Control signal gcs (gate Control signal) and outputs the gate Control signal to the gate driver 34. The data storage 35 stores characteristic values of different driving TFTs (e.g., threshold voltage Vth, mobility K, etc.), characteristic values of different OLED devices (e.g., threshold voltage Voled), characteristic values of different TFTs, and optical compensation characteristic values of different OLED devices. The source driver 33 receives the calculated Data and source number control signal SCS output from the timing controller 32, generates display Data Vdata, and outputs the display Data Vdata to the display panel through the Data Line (DL). Meanwhile, under the control of a source control signal SCS, a sensing Line SL senses a characteristic value of a pixel driving TFT or an OLED device in a certain row or a part of the row, and an analog-to-digital (ADC) conversion is performed to generate a sensing value, which is output to the timing controller 32. The Gate driver 34 receives the Gate control signal GCS, generates at least one Gate Line (GL1, GL2, etc.) signal, and outputs the signal to the display panel 31.
The display Panel 31 is composed of a plurality of pixels and a voltage signal EL (anode voltage ELVDD and cathode voltage ELVSS) for the OLED device to emit light around the Panel or around the pixel P. Each pixel P includes at least one data line DL, one sensing line SL, one scanning line GL (two scanning lines GL1 and GL2 are exemplified in the present embodiment), one organic light emitting diode device OLED, one storage capacitor C1, one switching TFT T1, one driving TFT T2, one sensing TFT T3, one OLED anode voltage ELVDD, and one OLED cathode voltage ELVSS.
As shown in fig. 4, the timing controller 32 mainly includes a data converting unit 321, a sensing control unit 322, an algorithm compensating unit 323, a timing control unit 324, and a data output unit 325. Taking RGBW as an example, the data conversion unit 321 converts an input RGB signal into an RGBW signal and outputs the RGBW signal. The sensing control unit 322 receives RGB data signals and an external Timing signal inputted from the outside, analyzes the data, generates a change sensing mode command csm (change sensing mode), and outputs the change sensing mode command csm and the change sensing mode command to the Timing control unit 324 and the data output unit 325. The algorithm compensation unit 323 receives the RGBW Data, the sensing Sense Data output from the source driver 33, and various feature values stored in the Data memory 35, and outputs Data' after algorithm and compensation to the Data output unit 325 after algorithm such as peak luminance algorithm, complementary color algorithm, and compensation algorithm such as driving TFT feature value compensation, OLED feature value compensation, and optical compensation. The Timing control unit 324 receives the external Timing signal and the sensing mode command signal, and generates an SCS control signal for controlling the source driver 33 and a GCS control signal for controlling the gate driver 34. The Data output unit 325 receives the Data' and the change sensing mode command, and outputs different Data values so that the display panel 31 can display according to the Data values.
In the prior art, the conventional sensing method is fixed, and as shown in fig. 5, a red sub-pixel, a green sub-pixel, a blue sub-pixel and a white sub-pixel are sequentially sensed by a red-green-blue-white cyclic sensing method. However, the sub-pixels of different colors all age differently over time, and if the above sensing method is still used, the afterimage of the aged sub-pixels cannot be eliminated, which results in a problem of image quality degradation.
Therefore, the invention provides a display control method of a display device.
As shown in fig. 6, in the display control method of the display device according to the embodiment of the present invention, the main execution body of the method is a sensing control unit, and the method includes the following steps:
and S61, acquiring the brightness value corresponding to each color in the preset time period.
In an embodiment of the present invention, a brightness value corresponding to each color within a preset time period may be acquired. For example, the RGBW signal is input, and the luminance value TR corresponding to red, the luminance value TG corresponding to green, the luminance value TB corresponding to blue, and the luminance value TW corresponding to white can be calculated within a preset time period, for example, within 18 seconds. If the input signal is an RGB signal, it is not necessary to calculate the luminance value of white, and the previous data conversion unit does not need to convert the RGB signal into an RGBW signal.
S62, a display ratio of each color within a preset time period is calculated.
In an embodiment of the present invention, after obtaining the luminance value corresponding to each color, the luminance values corresponding to all the colors may be summed to calculate a total luminance value. Then, the luminance value corresponding to each color is divided by the total luminance value, and the display ratio corresponding to each color is calculated. Continuing with the above example, assuming that the total luminance value of all the sub-pixels within the preset time period is T, T is TR + TG + TB + TW. Then, the display ratio RR of red is TR/T, the display ratio RG of green is TG/T, the display ratio RB of blue is TB/T, and the display ratio RW of white is TW/T.
S63, determining a sensing mode of the display device according to the display ratio.
After the display ratio of each color is calculated, the display ratio may be compared with a preset threshold to obtain a comparison result, and a sensing mode may be determined according to the comparison result.
In an embodiment of the invention, when the preset threshold is the first threshold and the colors include three RGB colors, the display ratios of the three RGB colors may be respectively compared with the first threshold to obtain the first comparison result set, so as to determine the corresponding sensing mode according to the first comparison result set. Wherein the first threshold is greater than 0 and less than or equal to 1. For example, assuming that the first threshold is R1, a display ratio of red RR, green RG, and blue RB are compared with R1, respectively. If RR is greater than or equal to R1, the output SR is 1, which indicates that the sensing of the red sub-pixel needs to be accelerated; otherwise, the output SR is 2, indicating that the sensing of the red subpixel need not be expedited. Similarly, if RG is greater than or equal to R1, the output SG is 1, indicating that sensing of the green sub-pixel needs to be accelerated; otherwise, the output SG is 2, indicating that the sensing of the green subpixel does not need to be accelerated. If RB is greater than or equal to R1, the output SB is 1, indicating that sensing of the blue subpixel needs to be expedited; otherwise, the output SB is 2, indicating that the sensing of the blue subpixel need not be expedited. The three outputs SR, SG and SB are combined into a first set of comparison results. If the first comparison result set is [ 1, 2, 2 ], which indicates that the red sub-pixel is aging, the corresponding sensing mode is the sensing mode for sensing the red sub-pixel faster.
In order to improve the accuracy of sensing, in another embodiment of the present invention, two preset thresholds, i.e., a second threshold and a third threshold, may be set. The second threshold is greater than 0 and less than or equal to 1, the third threshold is greater than or equal to 0 and less than 1, and the second threshold is greater than the third threshold. Specifically, the display ratios of the three RGB colors may be compared with a second threshold and a third threshold, respectively, to obtain a second comparison result set, and then the corresponding sensing mode is determined according to the second comparison result set. For example, assuming that the second threshold is R2 and the third threshold is R3, the display ratio of red is RR, the display ratio of green is RG, and the display ratio of blue is RB are compared with R2 and R3, respectively. If RR is greater than or equal to R2, the output SR is 1, which indicates that the sensing of the red sub-pixel needs to be accelerated; if RR is less than R2 and greater than or equal to R3, the output SR is 2, indicating that sensing of the red subpixel need not be expedited; if RR is less than R3, the output SR is 3, indicating that the red subpixel need not be sensed. Similarly, if RG is greater than or equal to R2, the output SG is 1, indicating that sensing of the green sub-pixel needs to be accelerated; if RG is less than R2 and greater than or equal to R3, then the output SG is 2, indicating that sensing of the green subpixel need not be expedited; if RG is less than R3, the output SG is 3, indicating that the green subpixel need not be sensed. If RB is greater than or equal to R2, the output SB is 1, indicating that sensing of the blue subpixel needs to be expedited; if RB is less than R2 and greater than or equal to R3, then the output SB is 2, indicating that sensing of the blue subpixel need not be expedited; if RB is less than R3, the output SB is 3, indicating that the blue subpixel need not be sensed. The three outputs SR, SG and SB are combined into a second set of comparison results. If the second comparison result set is [ 3, 1, 2 ], which indicates that the green sub-pixel is aged, the corresponding sensing mode is the sensing mode for sensing the green sub-pixel faster.
In another embodiment of the present invention, if the input signal is an RGBW signal, it is necessary to compare the display ratios of the four colors RGBW with the first threshold respectively, obtain a third comparison result set, and determine the corresponding sensing mode according to the third comparison result set. That is, the four outputs SR, SG, SB, and SW are combined into a third set of comparison results. And determining which color of sub-pixel is aged according to the four comparison results, and accelerating the sensing of the sub-pixel.
In order to further improve the sensing accuracy, in yet another embodiment of the present invention, the display ratios of the four colors RGBW may be compared with the second threshold and the third threshold respectively, a fourth comparison result set is obtained, and then the corresponding sensing mode is determined according to the fourth comparison result set. For example: the fourth comparison result set is [ 1, 2, 3, 1 ], which indicates that red and white sub-pixels are aged and sensing needs to be accelerated; the green sub-pixel does not need to accelerate sensing; the blue sub-pixel does not need to be sensed.
S64, in the sensing mode, compensating the display data in a sensing manner corresponding to the sensing mode, so that the display device displays the compensated display data.
After the sensing mode is determined, the display data may be compensated in a sensing manner corresponding to the sensing mode, so that the display apparatus displays the compensated display data. For example: for the sensing mode of speeding up sensing the red sub-pixel, sensing can be performed in a cyclic manner of red, green and blue, so that the display device can quickly compensate the aging of the red sub-pixel and eliminate the red residual image.
For another example: continuing with the fourth set of comparison results as [ 1, 2, 3, 1 ], as shown in fig. 7, sensing may be performed in a cyclic manner of red, green, white, and white …, so that the display device can quickly compensate for aging of the red and white sub-pixels and eliminate red and white afterimages.
According to the display control method of the display device, the sensing mode of the display device is determined by calculating the display ratio of each color in the preset time period, and the display data is compensated by adopting the sensing mode corresponding to the sensing mode, so that the display device displays the compensated display data, the residual image caused by long-time large-area display of a certain color can be rapidly and effectively eliminated, and the quality of the displayed image is improved.
In order to implement the above embodiments, the present invention further provides a display device.
Fig. 8 is a schematic structural diagram of a display device according to an embodiment of the present invention.
As shown in fig. 8, the display device includes:
a display panel 81, a timing controller 82, a source driver 83, a gate driver 84, and a data memory 85.
In an embodiment of the present invention, the Timing controller 82 reads the Data stored in the Data memory 85, receives externally input RGB Data, the Timing control signal Timing, and the sensing Data output by the source driver 83, and generates the calculated Data and the source control signal SCS to output to the source driver 83 through calculation, conversion, compensation, and other algorithms by the Timing controller 82. The timing controller 32 generates a gate Control signal gcs (gate Control signal) and outputs the gate Control signal gcs (gate Control signal) to the gate driver 84. The data storage 85 stores characteristic values of different driving TFTs (e.g., threshold voltage Vth, mobility K, etc.), characteristic values of different OLED devices (e.g., threshold voltage Voled), characteristic values of different TFTs, and optical compensation characteristic values of different OLED devices. The source driver 83 receives the calculated Data and source number control signal SCS output from the timing controller 82, generates display Data Vdata, and outputs the display Data Vdata to the display panel 81 through the Data Line (DL). Meanwhile, under the control of a source control signal SCS, a sensing Line SL senses a characteristic value of a whole or partial pixel driving TFT or OLED device of a certain row, and the sensing Line SL generates a sensing value through analog-to-digital (ADC) conversion and outputs the sensing value to the timing controller 82. The Gate driver 84 receives the Gate control signal GCS, generates at least one Gate Line (GL1, GL2, etc.) signal, and outputs the signal to the display panel 81.
Among them, the timing controller 82 includes a data conversion unit 821, a sensing control unit 822, an algorithm compensation unit 823, a timing control unit 824, and a data output unit 825.
In one embodiment of the present invention, taking RGBW as an example, the data conversion unit 821 converts an input RGB signal into an RGBW signal and outputs the RGBW signal. The Sensing control unit 822 receives RGB data signals and an external Timing signal inputted from the outside, analyzes the data, generates a change Sensing mode command csm (change Sensing mode), and outputs the change Sensing mode command csm (change Sensing mode) to the Timing control unit 824 and the data output unit 825. The algorithm compensation unit 823 receives RGBW Data, the sensing Sense Data output from the source driver 83, and various feature values stored in the Data memory 85, and outputs Data' subjected to the algorithm and compensation to the Data output unit 825 after performing algorithms such as a peak luminance algorithm, a complementary color algorithm, and compensation algorithms such as driving TFT feature value compensation, OLED feature value compensation, and optical compensation. The Timing control unit 824 receives the external Timing signal and the sensing mode command signal, and generates an SCS control signal for controlling the source driver 83 and a GCS control signal for controlling the gate driver 84. The Data output unit 825 receives the Data' and the change sensing mode command, and outputs a different Data value (display Data) so that the display panel 81 can perform display according to the Data value (display Data).
Wherein, the sensing control unit 822 is configured to:
acquiring a brightness value corresponding to each color within a preset time period;
calculating the display ratio of each color within a preset time period;
determining a sensing mode of the display device according to the display ratio; and
in the sensing mode, the display data is compensated in a sensing mode corresponding to the sensing mode, so that the display device displays the compensated display data through the display panel.
In an embodiment of the present invention, a brightness value corresponding to each color within a preset time period may be acquired. For example, the RGBW signal is input, and the luminance value TR corresponding to red, the luminance value TG corresponding to green, the luminance value TB corresponding to blue, and the luminance value TW corresponding to white can be calculated within a preset time period, for example, within 18 seconds. If the input signal is an RGB signal, it is not necessary to calculate the luminance value of white, and the previous data conversion unit does not need to convert the RGB signal into an RGBW signal.
After the brightness value corresponding to each color is obtained, the brightness values corresponding to all the colors can be summed to calculate a total brightness value. Then, the luminance value corresponding to each color is divided by the total luminance value, and the display ratio corresponding to each color is calculated. Continuing with the above example, assuming that the total luminance value of all the sub-pixels within the preset time period is T, T is TR + TG + TB + TW. Then, the display ratio RR of red is TR/T, the display ratio RG of green is TG/T, the display ratio RB of blue is TB/T, and the display ratio RW of white is TW/T.
After the display ratio of each color is calculated, the display ratio may be compared with a preset threshold to obtain a comparison result, and a sensing mode may be determined according to the comparison result.
In an embodiment of the invention, when the preset threshold is the first threshold and the colors include three RGB colors, the display ratios of the three RGB colors may be respectively compared with the first threshold to obtain the first comparison result set, so as to determine the corresponding sensing mode according to the first comparison result set. Wherein the first threshold is greater than 0 and less than or equal to 1. For example, assuming that the first threshold is R1, a display ratio of red RR, green RG, and blue RB are compared with R1, respectively. If RR is greater than or equal to R1, the output SR is 1, which indicates that the sensing of the red sub-pixel needs to be accelerated; otherwise, the output SR is 2, indicating that the sensing of the red subpixel need not be expedited. Similarly, if RG is greater than or equal to R1, the output SG is 1, indicating that sensing of the green sub-pixel needs to be accelerated; otherwise, the output SG is 2, indicating that the sensing of the green subpixel does not need to be accelerated. If RB is greater than or equal to R1, the output SB is 1, indicating that sensing of the blue subpixel needs to be expedited; otherwise, the output SB is 2, indicating that the sensing of the blue subpixel need not be expedited. The three outputs SR, SG and SB are combined into a first set of comparison results. If the first comparison result set is [ 1, 2, 2 ], which indicates that the red sub-pixel is aging, the corresponding sensing mode is the sensing mode for sensing the red sub-pixel faster.
In order to improve the accuracy of sensing, in another embodiment of the present invention, two preset thresholds, i.e., a second threshold and a third threshold, may be set. The second threshold is greater than 0 and less than or equal to 1, the third threshold is greater than or equal to 0 and less than 1, and the second threshold is greater than the third threshold. Specifically, the display ratios of the three RGB colors may be compared with a second threshold and a third threshold, respectively, to obtain a second comparison result set, and then the corresponding sensing mode is determined according to the second comparison result set. For example, assuming that the second threshold is R2 and the third threshold is R3, the display ratio of red is RR, the display ratio of green is RG, and the display ratio of blue is RB are compared with R2 and R3, respectively. If RR is greater than or equal to R2, the output SR is 1, which indicates that the sensing of the red sub-pixel needs to be accelerated; if RR is less than R2 and greater than or equal to R3, the output SR is 2, indicating that sensing of the red subpixel need not be expedited; if RR is less than R3, the output SR is 3, indicating that the red subpixel need not be sensed. Similarly, if RG is greater than or equal to R2, the output SG is 1, indicating that sensing of the green sub-pixel needs to be accelerated; if RG is less than R2 and greater than or equal to R3, then the output SG is 2, indicating that sensing of the green subpixel need not be expedited; if RG is less than R3, the output SG is 3, indicating that the green subpixel need not be sensed. If RB is greater than or equal to R2, the output SB is 1, indicating that sensing of the blue subpixel needs to be expedited; if RB is less than R2 and greater than or equal to R3, then the output SB is 2, indicating that sensing of the blue subpixel need not be expedited; if RB is less than R3, the output SB is 3, indicating that the blue subpixel need not be sensed. The three outputs SR, SG and SB are combined into a second set of comparison results. If the second comparison result set is [ 3, 1, 2 ], which indicates that the green sub-pixel is aged, the corresponding sensing mode is the sensing mode for sensing the green sub-pixel faster.
In another embodiment of the present invention, if the input signal is an RGBW signal, it is necessary to compare the display ratios of the four colors RGBW with the first threshold respectively, obtain a third comparison result set, and determine the corresponding sensing mode according to the third comparison result set. That is, the four outputs SR, SG, SB, and SW are combined into a third set of comparison results. And determining which color of sub-pixel is aged according to the four comparison results, and accelerating the sensing of the sub-pixel.
In order to further improve the sensing accuracy, in yet another embodiment of the present invention, the display ratios of the four colors RGBW may be compared with the second threshold and the third threshold respectively, a fourth comparison result set is obtained, and then the corresponding sensing mode is determined according to the fourth comparison result set. For example: the fourth comparison result set is [ 1, 2, 3, 1 ], which indicates that red and white sub-pixels are aged and sensing needs to be accelerated; the green sub-pixel does not need to accelerate sensing; the blue sub-pixel does not need to be sensed.
After the sensing mode is determined, the display data may be compensated in a sensing manner corresponding to the sensing mode, so that the display apparatus displays the compensated display data. For example: for the sensing mode of speeding up sensing the red sub-pixel, sensing can be performed in a cyclic manner of red, green and blue, so that the display device can quickly compensate the aging of the red sub-pixel and eliminate the red residual image.
For another example: continuing with the fourth set of comparison results as [ 1, 2, 3, 1 ], as shown in fig. 7, sensing may be performed in a cyclic manner of red, green, white, and white …, so that the display device can quickly compensate for aging of the red and white sub-pixels and eliminate red and white afterimages.
The display device of the embodiment determines the sensing mode of the display device by calculating the display ratio of each color in the preset time period, and then compensates the display data by adopting the sensing mode corresponding to the sensing mode, so that the display device displays the compensated display data, the afterimage caused by long-time large-area display of a certain color can be rapidly and effectively eliminated, and the displayed picture quality is improved.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing steps of a custom logic function or process, and alternate implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present invention.
The logic and/or steps represented in the flowcharts or otherwise described herein, e.g., an ordered listing of executable instructions that can be considered to implement logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium could even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via for instance optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. If implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware that is related to instructions of a program, and the program may be stored in a computer-readable storage medium, and when executed, the program includes one or a combination of the steps of the method embodiments.
In addition, functional units in the embodiments of the present invention may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a separate product, may also be stored in a computer readable storage medium.
The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc. Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (8)
1. A display control method of a display device, comprising:
acquiring a brightness value corresponding to each color within a preset time period;
calculating the display ratio of each color in the preset time period;
determining a sensing mode of a display device according to the display ratio; and
in the sensing mode, compensating display data in a sensing mode corresponding to the sensing mode so that the display equipment displays the compensated display data;
determining a sensing mode of a display device according to the display ratio, including:
comparing the display ratio with a preset threshold value to obtain a comparison result, and determining a sensing mode according to the comparison result, wherein the sensing mode comprises the sensing of the corresponding color pixel needing to be accelerated and the sensing of the corresponding color pixel needing not to be accelerated.
2. The method of claim 1, wherein calculating the display ratio for each color for the preset time period comprises:
summing the brightness values corresponding to all the colors, and calculating a total brightness value;
and dividing the brightness value corresponding to each color by the total brightness value to calculate the corresponding display ratio of each color.
3. The method as claimed in claim 2, wherein when the preset threshold is a first threshold and the colors include three colors of RGB, comparing the display ratio with the preset threshold to obtain a comparison result, and determining the sensing mode according to the comparison result comprises:
comparing the display ratios of the three colors of RGB with the first threshold value respectively to obtain a first comparison result set, wherein the first threshold value is greater than 0 and less than or equal to 1;
and determining a corresponding sensing mode according to the first comparison result set.
4. The method as claimed in claim 1, wherein when the preset threshold includes a second threshold and a third threshold, and the color includes three colors of RGB, comparing the display ratio with the preset threshold to obtain a comparison result, and determining the sensing mode according to the comparison result, includes:
comparing the display ratios of the three colors of RGB with the second threshold and the third threshold respectively to obtain a second comparison result set, wherein the second threshold is greater than 0 and less than or equal to 1, the third threshold is greater than or equal to 0 and less than 1, and the second threshold is greater than the third threshold;
and determining a corresponding sensing mode according to the second comparison result set.
5. The method of claim 1, wherein when the preset threshold is a first threshold and the colors include four colors RGBW, comparing the display ratio with the preset threshold to obtain a comparison result, and determining the sensing mode according to the comparison result comprises:
comparing the display ratios of the four colors RGBW with the first threshold value respectively to obtain a third comparison result set;
and determining a corresponding sensing mode according to the third comparison result set.
6. The method of claim 1, wherein when the preset threshold includes a second threshold and a third threshold and the colors include four colors of RGBW, comparing the display ratio with the preset threshold to obtain a comparison result, and determining the sensing mode according to the comparison result includes:
comparing the display ratios of the four colors RGBW with the second threshold and the third threshold respectively to obtain a fourth comparison result set;
and determining a corresponding sensing mode according to the fourth comparison result set.
7. A display device, comprising:
the display device comprises a display panel, a time sequence controller, a source electrode driver, a grid electrode driver and a data memory, wherein the time sequence controller comprises a data conversion unit, a sensing control unit, an algorithm compensation unit, a time sequence control unit and a data output unit;
wherein the sensing control unit is configured to:
acquiring a brightness value corresponding to each color within a preset time period;
calculating the display ratio of each color in the preset time period;
determining a sensing mode of a display device according to the display ratio; and
in the sensing mode, compensating display data in a sensing mode corresponding to the sensing mode so that the display device displays the compensated display data through the display panel; the sensing control unit is configured to:
comparing the display ratio with a preset threshold value to obtain a comparison result, and determining a sensing mode according to the comparison result, wherein the sensing mode comprises the sensing of the corresponding color pixel needing to be accelerated and the sensing of the corresponding color pixel needing not to be accelerated.
8. The display device of claim 7, wherein the sensing control unit is to:
summing the brightness values corresponding to all the colors, and calculating a total brightness value;
and dividing the brightness value corresponding to each color by the total brightness value to calculate the corresponding display ratio of each color.
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| JP7038684B2 (en) * | 2019-08-01 | 2022-03-18 | Ｔｖｓ Ｒｅｇｚａ株式会社 | Image display device and image processing method |
| CN110491339B (en) * | 2019-08-29 | 2020-12-04 | 云谷（固安）科技有限公司 | Display panel driving circuit, display panel and display panel driving method |
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