CN113823223A - Monochrome display driving method, driving module and monochrome display device - Google Patents
Monochrome display driving method, driving module and monochrome display device Download PDFInfo
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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]
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Abstract
The invention discloses a driving method and a driving module for monochrome display and a monochrome display device. The driving method of one embodiment is applied to a driving module of a monochrome display device, and comprises the following steps: compressing the received original image data to generate a plurality of gray scale information sets, wherein each gray scale information set comprises a preset number of original image data; expanding the gray scale information set to obtain a plurality of monochrome image data, wherein the monochrome image data corresponds to pixels of the monochrome display device one by one; a drive signal for each pixel is generated based on the monochrome image data. According to the technical scheme, the resolution of the received original image data can be improved on the basis of not changing the driving performance of the driving module, so that the overall resolution of the display panel is improved, the display content watched by a user is clearer, the problem of a screen window is effectively solved, and the user experience is improved.
Description
Technical Field
The invention relates to the technical field of display. And more particularly, to a driving method of monochrome display, a driving module, and a monochrome display device.
Background
Monochrome display devices have higher resolution requirements than OLED display devices. Illustratively, when the screen resolution of the smartphone is 1920 × 1080, the display screen entering the human eye is quite clear, however, if the display content is displayed by a monochrome display device at the same resolution, the display content displayed by the magnifying module in the monochrome display device is insufficiently magnified, for example, the surface of white paper viewed by the human eye is quite smooth, and the surface of the paper is found to be "pothole" when viewed by a magnifying glass.
In current monochrome display devices, the problem of the screen effect has been a great problem. The screen window effect is that under the condition that (screen and image) pixels are insufficient, fine line waving caused by real-time rendering and a separated flicker phenomenon appears at a high-contrast edge, and human eyes see pixel points of a display screen and see things through the screen window, so that the monochrome display impression is greatly influenced, and the development of a monochrome display device is restricted.
Disclosure of Invention
The present invention is directed to a display panel, a method for manufacturing the same, and a display device, so as to solve at least one of the problems in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a driving method of monochrome display, which is applied to a driving module of a monochrome display device and comprises the following steps:
compressing the received original image data to generate a plurality of gray scale information sets, wherein each gray scale information set comprises a preset number of original image data;
expanding the gray scale information set to obtain a plurality of monochrome image data, wherein the monochrome image data corresponds to pixels of the monochrome display device one by one;
a drive signal for each pixel is generated based on the monochrome image data.
Further, each of the pixels includes a preset number of sub-pixels;
each original image data comprises gray scale data of the sub-pixels with the preset number, and the gray scale values of the gray scale data of each sub-pixel are the same;
each of the compressed original image data includes one of the gray-scale data of the predetermined number of sub-pixels.
Further, compressing the received raw image data to generate a plurality of gray scale information sets includes:
extracting one gray scale data in the gray scale data of the sub-pixels with the preset number as compressed image data of each original image data;
a gray scale information set is generated according to a preset amount of compressed image data to obtain a plurality of gray scale information sets.
Further, expanding the gray scale information set to obtain a plurality of monochrome image data includes:
and respectively expanding each gray scale information set, and respectively expanding the gray scale data of the compressed image data of each gray scale information set into the gray scale data of the sub-pixels with the preset number so as to generate monochrome image data.
Further, the preset number is 3, and the pixels include a red sub-pixel, a green sub-pixel and a blue sub-pixel;
the generating a drive signal for each pixel from the monochrome image data further comprises:
and generating driving signals of corresponding red sub-pixels, green sub-pixels and blue sub-pixels according to each gray scale data in the single color image data.
Furthermore, each original image data comprises a plurality of preset color gray scale data, the preset color gray scale data corresponds to one pixel, and the gray scale values of the preset color gray scale data are the same;
each of the compressed original image data includes one of the gray-scale data of the plurality of predetermined colors.
Further, the compressing the received raw image data to generate a plurality of gray scale information sets includes:
extracting one gray scale data of the preset colors as compressed image data of each original image data;
a gray scale information set is generated according to a preset amount of compressed image data to obtain a plurality of gray scale information sets.
Further, the expanding the grayscale information set to obtain a plurality of monochrome image data includes:
and respectively expanding each gray scale information set, and respectively expanding the gray scale data of the compressed image data of each gray scale information set into the gray scale data of the plurality of preset colors so as to generate monochrome image data.
Further, the pixel includes a sub-pixel; the preset colors are red, green and blue;
the generating a drive signal for each pixel from the monochrome image data further comprises:
generating a driving signal corresponding to the pixel according to the gray scale data of the plurality of preset colors in the monochrome image data.
Further, before the compressing the received plurality of raw image data to generate a plurality of gray scale information sets, the method further comprises: and converting a plurality of color image data into the plurality of original image data respectively, wherein each color image data comprises gray scale data of a plurality of sub-pixels corresponding to one pixel and color data of the plurality of sub-pixels.
A second aspect of the present invention provides a drive module, comprising:
the original image data compression module is used for compressing a plurality of received original image data to generate a plurality of gray scale information sets, wherein each gray scale information set comprises a preset number of different compressed original image data;
the gray scale information set expansion module is used for expanding the gray scale information set to obtain a plurality of monochrome image data, wherein the monochrome image data corresponds to the pixels of the monochrome display device one by one;
and the driving signal generation module is used for generating driving signals of all pixels according to the monochrome image data.
Further, each of the pixels includes a preset number of sub-pixels; the preset number is 3, and the pixels comprise red sub-pixels, green sub-pixels and blue sub-pixels; each original image data comprises gray scale data of the sub-pixels with the preset number, and the gray scale values of the gray scale data of each sub-pixel are the same; each compressed original image data comprises one gray scale data in the gray scale data of the sub-pixels with the preset number;
the original image data compression module is further used for extracting one gray scale data in the gray scale data of the sub-pixels with the preset number as the compressed image data of each original image data; generating a gray scale information set according to a preset amount of compressed image data to obtain a plurality of gray scale information sets;
the gray scale information set expansion module is further used for respectively expanding each gray scale information set and respectively expanding the gray scale data of the compressed image data of each gray scale information set into the gray scale data of the sub-pixels with the preset number so as to generate monochrome image data; the driving signal generating module is further used for generating corresponding driving signals of the red sub-pixel, the green sub-pixel and the blue sub-pixel according to each gray scale data in the single color image data
Furthermore, each original image data comprises a plurality of preset color gray scale data, the preset color gray scale data corresponds to one pixel, and the gray scale values of the preset color gray scale data are the same;
each compressed original image data comprises one gray scale data in the gray scale data of the preset colors; the pixel comprises a sub-pixel; the preset colors are red, green and blue;
the original image data compression module is further used for extracting one gray scale data in the gray scale data of the preset colors as the compressed image data of each original image data; generating a gray scale information set according to a preset amount of compressed image data to obtain a plurality of gray scale information sets;
the gray scale information set expansion module is further used for respectively expanding each gray scale information set and respectively expanding the gray scale data of the compressed image data of each gray scale information set into the gray scale data of the plurality of preset colors so as to generate monochrome image data;
the driving signal generating module is further configured to generate driving signals corresponding to the pixels according to the gray scale data of the plurality of preset colors in the monochrome image data.
A third aspect of the invention provides a monochrome display device comprising the driving module as provided in the second aspect of the invention.
The invention has the following beneficial effects:
according to the technical scheme, the resolution of the received original image data can be improved on the basis of not changing the driving performance of the driving module, so that the overall resolution of the display panel is improved, the display content watched by a user is clearer, the problem of a screen window is effectively solved, the user experience is improved, the original image data is not lost in the process, and the original image data with high resolution can be effectively restored.
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The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
Fig. 1 is a flowchart illustrating a driving method of monochrome display according to an embodiment of the present invention;
FIG. 2 shows a schematic diagram of raw image data of an alternative embodiment of the invention;
FIG. 3a shows a schematic view of a pixel structure according to an alternative embodiment of the invention;
FIG. 3b shows a schematic view of a pixel structure according to an alternative embodiment of the invention;
FIG. 4 is a flowchart illustrating an alternative embodiment of step S1 according to an embodiment of the present invention;
FIG. 5a is a diagram illustrating compressed image data resulting from compressing the original image data of FIG. 1 in accordance with an alternative embodiment of the present invention;
FIG. 5b is a schematic diagram of compressed image data resulting from compressing the original image data of FIG. 1 in accordance with another alternative embodiment of the present invention;
FIG. 6 is a schematic diagram illustrating expanded monochrome image data according to an alternative embodiment of the present invention;
FIG. 7 is a flowchart illustrating another alternative embodiment of step S1 according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a driving module of a monochrome display device according to another embodiment of the present invention.
Detailed Description
In view of the display problems of the monochrome display device in the prior art, the inventors propose that the display performance of the display device can be improved by increasing the resolution of the display panel. However, the resolution of the related art monochrome display device is limited by the driving module, such as the driving chip, and the resolution of the pixels which can be driven by the driving chip in the related art is limited, so that the resolution of the displayed image picture is also limited.
In a specific example, if the driving module is capable of processing image data with a resolution of 240 × 720 to generate driving signals to drive each sub-pixel for displaying, at this time, the resolution of the image data to be processed received by the driving module is 240 × 720, the resolution of the image data capable of being processed by the driving module is 240 × 720, and the resolution of the image picture finally displayed for the user to view is still 240 × 720, so for this phenomenon, the inventors propose a driving method, a driving module, and a monochrome display device for monochrome display to solve the above-mentioned problems.
In an alternative embodiment, as shown in fig. 1, a method of an embodiment of the invention includes:
s1, compressing the received original image data to generate a plurality of gray scale information sets, wherein each gray scale information set comprises a preset number of original image data;
s2, expanding the gray scale information set to obtain a plurality of monochrome image data, wherein the monochrome image data corresponds to the pixels of the monochrome display device one by one;
and S3, generating a driving signal of each pixel according to the monochrome image data.
By using the method of the embodiment, the resolution of the received original image data can be improved on the basis of not changing the driving performance of the driving module, so that the overall resolution of the display panel is improved, and the original image data is not lost in the process, so that the original image data with high resolution can be effectively restored.
In a specific example, the driving performance of the driving module is still taken as an example of processing the image data with the resolution of 240 × 720, at this time, when the driving method is applied to the embodiment, the resolution of the image data to be processed received by the driving module can be increased to 720 × 720, and the resolution of the displayed image for the user to view can be increased to 720 × 720, so that the embodiment greatly increases the resolution of the input and output image data on the basis of the unchanged performance of the driving module, such as a driving chip, further makes the display content viewed by the user clearer, effectively improves the screen window problem, and improves the user experience.
The method of the present embodiment will now be described in exemplary steps, and includes:
s1, compressing the received raw image data to generate a plurality of gray scale information sets, wherein each gray scale information set includes a preset number of raw image data.
As shown in fig. 2, 9 pieces of raw image data are shown in fig. 2, and the resolution thereof may be represented as 3 × 3. One original image data corresponds to one pixel, that is, the driving module can generate driving signals corresponding to 9 pixels after processing each original image data.
Further, in an optional embodiment, each of the pixels includes a preset number of sub-pixels, the preset number is 3, and the pixels include a red sub-pixel, a green sub-pixel, and a blue sub-pixel. In an optional embodiment, each of the original image data includes gray scale data of the predetermined number of sub-pixels, and gray scale values of the gray scale data of each of the sub-pixels are the same. That is, each original image data includes 3 gray-scale data corresponding to red sub-pixel, green sub-pixel and blue sub-pixel. The pixel arrangement of the monochrome display device of the present embodiment may be consistent with the pixel arrangement of the color display device in the prior art, that is, as shown in fig. 3a, one pixel includes three sub-pixels, and each sub-pixel is respectively connected to the driving signal lines data1, data2 and data3 for driving, that is, the driving signal connected to each driving signal line is generated according to the gray scale data of each sub-pixel in the original image data.
In one specific example, as shown in fig. 1, for the original image data a in the first row and the first column, which may be represented as (255,255,255), that is, for the first gray-scale data a1(R ═ 255) in the original image data a, the generated driving signal is connected to the red sub-pixel through the first signal line; for the second gray-scale data a2 (G255) in the original image data a, the generated driving signal is connected to the green sub-pixel through the second signal line; for the third gray-scale data a3 (B255) in the original image data, the generated driving signal is connected to the red subpixel through the third signal line. Therefore, the gray scale data of each sub-pixel is the same and is the gray scale data with the gray scale value of 255.
A characteristic of a monochrome display device combining the principle of color mixing of three primary colors and realizing a monochrome display function is that when gray scale values of three primary colors (red, green, and blue) are the same, color mixing into a monochrome is enabled. For example: when the gray-scale data of each primary color in the original image data is R255, G255, and B255, that is, the original image data is represented as (255,255,255), the original image data is displayed in white. Another example is: when the gray-scale data of each primary color in the original image data is R200, G200, and B200, the original image data is displayed in light gray. Another example is: when the gray-scale data of each primary color in the original image data is R ═ 0, G ═ 0, and B ═ 0, the original image data is displayed in black. Therefore, in order to realize monochrome display, the magnitudes of the grayscale values of 3 pieces of grayscale data in the transmitted original image data are the same.
In an alternative embodiment, each compressed original image data includes one gray scale data of the predetermined number of sub-pixels. That is, one original image data is compressed, and only one gray-scale data among gray-scale data of a plurality of sub-pixels is retained.
If the original image data is represented as (255,255,255), that is, R is 255, G is 255, and B is 255, the compressed image data may be represented as R255, or G is 255, or B is 255, and the compressed image data is represented as (255). That is to say, the compressed image data retains one of the gray scale data of the three sub-pixels, and if the storage amount of the original image data is 3, the storage amount of the compressed original image data is 1, so that the driving method applied to the monochrome display designed by the embodiment utilizes the principle of color mixture of three primary colors and the uniqueness of the monochrome display, and can greatly reduce the storage amount of the original image data, and further improve the processing speed and the storage performance of the driving module.
In an alternative embodiment, as shown in fig. 4, the step S1 "compressing the received raw image data to generate a plurality of gray scale information sets" further comprises:
s11, extracting one gray-scale data of the sub-pixels of the preset number as the compressed image data of each of the original image data.
Illustratively, the predetermined number is 3. Taking the original image data a in the first row and the first column in fig. 1 as an example, the original image data is represented as (255,255,255), which includes 3 sub-pixel gray-scale data, and the gray-scale value of the gray-scale data of each sub-pixel is 255, so when compressing the original image data, any one of the gray-scale data is extracted as the compressed image data, for example, the compressed image data may be R255, G255, or B255.
For example, the original image data C in the first row and the second column in fig. 1 is represented by (0,0,0), and may be compressed so that R is 0, G is 0, or B is 0. Similarly, for the original image data D in the third column of the first row in fig. 1, the original image data is represented as (0,0,0), and may be compressed as R ═ 0, or G ═ 0, or B ═ 0.
Therefore, after three original image data in the entire first line are compressed, the compressed image data may be represented as 255, 0,0 in order. As shown in fig. 5, after 9 pieces of original image data (27 pieces of gray scale data including 27 sub-pixels) in fig. 1 are compressed, the formed compressed image data is 9 pieces of compressed image data (including 9 pieces of gray scale data), and therefore, the storage amount of the compressed image data is reduced by one third compared with that of the original image data, and this compression manner can greatly reduce the storage amount of the original image data, and further improve the processing speed and storage performance of the driving module.
S12, generating a gray scale information set according to a preset amount of compressed image data to obtain a plurality of gray scale information sets.
In this embodiment, one gray scale information set often includes red gray scale data, green gray scale data, and blue gray scale data, which facilitates data transmission in a subsequent gray scale information set transmission process based on a three primary color principle, and therefore, the preset number of this embodiment is 3. As shown in fig. 5a, every 3 image data of the 9 compressed image data may form a gray scale information set, thereby obtaining 3 gray scale information sets (as shown by the dashed line box in fig. 5 a). In a specific example, three original image data (A, C and D) in the entire first row in fig. 1 are compressed to form a gray information set X, and the compressed image data in the gray information set X can be represented as X1 ═ 255, X2 ═ 0, and X3 ═ 0 in turn. As can be seen from the foregoing three primary color mixing principle, each gray scale information set includes compressed image data of 3 primary colors (red, green, and blue) for transmission of the gray scale information set.
For example, taking the original image data a in fig. 1 as an example, the compressed image data of the original image data may be R255, G255, or B255, where R255 is taken as the compressed image data X1. As for the original image data C (0,0,0) in fig. 1, G ═ 0 is taken as the compressed image data X2. Similarly, for the original image data D (0,0,0) in fig. 1, B — 0 is taken as the compressed image data X3. Therefore, the gray scale information set X can be represented as [ R ═ 255, G ═ 0, and B ═ 0 ], that is, the white image data, the black image data, and the black image data of the original image data are compressed to form a gray scale information set capable of being represented in red, that is, [ R ═ 255, G ═ 0, and B ═ 0 ] the color formed by color mixing is red.
For example, the 3 pieces of compressed image data in the second line are represented as one gray scale information set, where [ R ═ 0, G ═ 255, and B ═ 0 ] and this is to compress the black image data, white image data, and black image data of the original image data to form a gray scale information set capable of being represented in green, that is, the color formed by color mixing of [ R ═ 0, G ═ 255, and B ═ 0 ] is green.
For example, the 3 compressed image data in the third row is represented as one gray scale information set, where [ R ═ 0, G ═ 0, and B ═ 255 ] is obtained by compressing the black image data, and the white image data of the original image data to form a gray scale information set capable of being represented in blue, that is, the color formed by color mixing of [ R ═ 0, G ═ 255, and B ═ 0 ] is blue. Therefore, 9 original image data can be compressed into 3 gray scale information sets, and the required storage amount is effectively reduced from the original image data shown in fig. 1 to the gray scale information set shown in fig. 5 a.
Through the compression of the original image data in step S1, the 9 original image data corresponding to 3 × 3 pixels (including the 27 gray scale data corresponding to the sub-pixels of different colors) are compressed into 3 gray scale information sets corresponding to 1 × 3 pixels (including the extracted 9 gray scale data), that is, if the original image data with the maximum performance of receiving image data of 1 × 3 resolution of the existing driving module is received, the driving module of the present embodiment can receive image data with 3 × 3 resolution (compressed into 1 × 3 resolution) without changing the performance of the driving module, and therefore, the processing performance of the driving module using the method is greatly improved.
For example, if the resolution of the existing driving module is 240 × 720, the existing driving module can receive the image data with the resolution of 240 × 720 at maximum, and after the method of the present embodiment, the image data with the resolution of 720 × 720 can be compressed into 240 × 720 for the existing driving module to process, so that the resolution of the original image data is improved on the basis of protecting the processing performance of the existing driving module.
In an alternative embodiment, the step S2 "expands the grayscale information set to obtain a plurality of monochrome image data, wherein the monochrome image data has a one-to-one correspondence with the pixels of the monochrome display device" further includes:
s21, expanding each gray scale information set, respectively, and expanding the gray scale data of the compressed image data of each gray scale information set to the gray scale data of the predetermined number of sub-pixels, respectively, to generate monochrome image data.
In this step, the original image data is transmitted as a gray scale information set formed by compressing the image data, however, due to the resolution limit of the existing display panel, before the driving signal of each pixel is generated, the compressed image data needs to be expanded into monochrome image data for generating the driving signal, so that the display panel can display the image content according to the driving signal. Therefore, the expansion of the image data compressed in the gray scale information set is mainly performed in the step.
For example, taking one gray scale information set X shown in fig. 5a as an example, the gray scale information set X includes compressed image data X1, X2, and X3, and for the compressed image data X1(R ═ 255), the gray scale values of the gray scale data corresponding to the sub-pixels of different colors in monochrome display are expanded to gray scale data corresponding to 3 sub-pixels, using the same characteristic. Fig. 6 shows monochrome image data after expansion of the gray scale information set of fig. 5a, and as shown in fig. 6, 9 pieces of compressed image data in fig. 5 are expanded to generate 27 pieces of gray scale data corresponding to the sub-pixels, and the compressed image data X1 (R255) is expanded to monochrome image data Y including gray scale data corresponding to the red sub-pixel, the green sub-pixel, and the blue sub-pixel, that is, Y1, Y2, and Y3 shown in fig. 6. That is, X1(R ═ 255) in the present embodiment is expanded to Y1(R ═ 255), Y2(G ═ 255), and Y3(B ═ 255), respectively, and the expanded monochrome image data Y can be represented as (255,255,255), corresponding to the original image data a in the first row and the first column in fig. 1.
For another example, the compressed image data X2(G ═ 0) in the grayscale information set X is expanded into monochrome image data CC including the expanded grayscale data corresponding to the respective sub-pixels, that is, R ═ 0, G ═ 0, and B ═ 0. The monochrome image data corresponds to the original image data C in fig. 1. Similarly, the compressed image data X3(B is 0) in the grayscale information set X is expanded into monochrome image data DD including the expanded grayscale data corresponding to each subpixel, i.e., R is 0, G is 0, and B is 0. The monochrome image data corresponds to the original image data D in fig. 1. That is to say, the extended monochrome image data can completely correspond to the original image data, and the monochrome image data used for generating the driving signal does not lose the original image data in the compression and extension processes, so the method can realize lossless compression and lossless restoration, and effectively ensure the image display effect.
In a specific example, still taking the resolution of the conventional driving module as 240 × 720 as an example, after step S1, the 720 × 720 image data can be compressed into 240 × 720 for processing by the conventional driving module, and further, the driving module performs restoration based on the compressed 240 × 720 image data, so that the 240 × 720 compressed data can be restored into 720 monochrome image data, and by using the characteristic of monochrome display, the process does not lose image data, thereby implementing lossless restoration of the compressed original image data.
And S3, generating a driving signal of each pixel according to the monochrome image data.
The monochrome image data is obtained based on the compression at step S1 and the restoration at step S2, and the drive signal for each pixel is generated using the monochrome image data at step S3.
In an alternative embodiment, the step S3 "generating the driving signals for the pixels according to the monochrome image data" further includes:
s31, driving signals for the red sub-pixel, the green sub-pixel, and the blue sub-pixel are generated for each gray scale data in the monochrome image data.
In this embodiment, for a monochrome display device adopting a pixel arrangement structure of a color display device, as shown in fig. 3a, each pixel includes a red sub-pixel, a green sub-pixel, and a blue sub-pixel, and the sub-pixels of each color are respectively connected to one driving signal line, so that driving signals corresponding to three sub-pixels in one pixel can be generated for each monochrome image data, and then the three driving signals are respectively connected to the corresponding sub-pixels through the corresponding driving signal lines.
In a specific example, as shown in fig. 1, the monochrome image data obtained by compressing and restoring the original image data in the first row and the first column is still (255), wherein the driving signal generated according to the first gray-scale data a1(255) is switched to the red sub-pixel, the driving signal generated according to the second gray-scale data a2(255) is switched to the green sub-pixel, and the driving signal generated according to the third gray-scale data A3(255) is switched to the blue sub-pixel, thereby implementing monochrome display of the display panel.
In a specific example, still taking the resolution of the conventional driving module as 240 × 720 as an example, after step S1, the 720 × 720 image data can be compressed into 240 × 720 for processing by the conventional driving module, and further, the driving module performs restoration based on the compressed 240 × 720 image data, can restore the 240 × 720 compressed data into 720 monochrome image data, and finally can display the 720 × 720 resolution image on the display panel, so that the resolution of the original image data is improved and the resolution of the displayed image is improved by the above-described compression and restoration method, on the basis of protecting the processing performance of the conventional driving module.
Unlike the above-described manner of performing original image data transmission using the pixel arrangement of the related art, the present embodiment redesigns the pixel arrangement, resulting in a pixel structure suitable for a monochrome display device.
In another alternative embodiment, as shown in fig. 3b, one pixel of this embodiment includes one sub-pixel having the same light emitting area as the total light emitting area of the red sub-pixel, the green sub-pixel, and the blue sub-pixel.
That is to say, in this embodiment, the arrangement of the pixels is redesigned, one pixel is a sub-pixel, for example, the driving signals generated by the 9 pieces of original image data shown in fig. 1 are still transmitted to the 9 pixels, and differently, as shown in fig. 3b, in this structure, one pixel is connected to one driving signal line data1, in other words, one sub-pixel is connected to one signal line, and one driving signal is transmitted to one sub-pixel (that is, the pixel), so that the driving of the sub-pixel is realized. Compared with the pixel shown in fig. 3a including 3 sub-pixels, 3 driving signal lines data1, data2, and data3 respectively corresponding to each sub-pixel are required for one pixel in fig. 3a, and only one driving signal line data1 is required for one pixel redesigned in fig. 3b, thereby reducing the number of driving signal lines.
For such a redesigned display panel, the original image data corresponding to the pixels of the present embodiment can still be represented by including grayscale data. In an optional embodiment, each of the original image data includes a plurality of preset color gray scale data, the preset color gray scale data corresponds to one pixel, and gray scale values of the preset color gray scale data are the same; each of the compressed original image data includes one of the gray-scale data of the plurality of predetermined colors.
That is, although it is difficult to correspond the gray scale data of the red sub-pixel, the green sub-pixel and the blue sub-pixel in the original image data with one pixel including one sub-pixel under such a pixel design, the original image data of the pixel includes the gray scale data of the three same gray scale values even if one pixel includes one sub-pixel due to the characteristic that the gray scale values of the three primary colors of the monochrome display are the same. In an optional embodiment, the preset colors are red, green and blue, that is, each original image data includes gray scale data corresponding to red, green and blue, and gray scale values of the red gray scale data, the green gray scale data and the blue gray scale data are consistent in value, so as to realize monochrome display of the pixel.
In an alternative embodiment, as shown in fig. 7, compressing the received raw image data to generate gray scale information sets in S1 includes:
s11, extracting one of the gray-scale data of the plurality of preset colors as a compressed image data of each of the original image data.
Illustratively, the preset colors are red, green, and blue, which are determined based on the three primary color principle.
Taking the original image data a in fig. 1 as an example, the original image data is represented as (255), and includes: the red gradation data R is 255, the green gradation data G is 255, and the color gradation data B is 255. Since the gray scale value of the gray scale data of each color is 255, when the original image data is compressed, the gray scale data of any one color is extracted as compressed image data, and for example, the compressed image data may be R255, G255, or B255. For another example, the compression principle for the gray scale data of different colors is similar for the original image data C in fig. 1 and for the original image data D in fig. 1, and is not repeated here.
Therefore, after three original image data in the entire first line are compressed, the compressed image data may be represented as 255, 0,0 in order. As shown in fig. 5b, after the 9 pieces of original image data (27 pieces of gray scale data including 27 sub-pixels) in fig. 1 are compressed, the formed compressed image data is 9 pieces of compressed image data (including 9 pieces of gray scale data), therefore, the storage amount of the compressed image data is reduced by one third compared with that of the original image data, and this compression manner can also greatly reduce the storage amount of the original image data, and further improve the processing speed and storage performance of the driving module.
It should be noted that the compression method of the present embodiment is similar to the compression method of the pixel structure of the color display device, and the principle and the process thereof are not repeated herein.
S12, generating a gray scale information set according to a preset amount of compressed image data to obtain a plurality of gray scale information sets.
As shown in fig. 5b, the 9 compressed image data can obtain 3 gray scale information sets, each of which includes compressed image data of 3 primary colors (red, green, and blue). For example, taking the original image data a (255,255,255) in fig. 1 as an example, the compressed image data of the original image data may be R255, G255, or B255, wherein the red grayscale data R255 is taken as the compressed image data. For the original image data C (0,0,0) in fig. 1, the green gradation data G is taken as 0 as the compressed image data. Similarly, for the original image data D (0,0,0) in the first row and the second column in fig. 1, the blue grayscale data B is taken to be 0 as the compressed image data. Therefore, the gray scale information set can be represented as [ R ═ 255, G ═ 0, and B ═ 0 ], that is, the white image data, the black image data, and the black image data of the original image data are compressed to form a gray scale information set capable of being represented in red, that is, the color formed by color mixing of [ R ═ 255, G ═ 0, and B ═ 0 ] is red.
Through the compression of the original image data in step S1, the 9 original image data (including the 27 gray scale data corresponding to different colors) corresponding to the 3 × 3 pixels are compressed into 3 gray scale information sets (including the extracted 9 gray scale data) corresponding to the 1 × 3 pixels, that is, if the original image data with the maximum performance of receiving image data of the existing driving module being 1 × 3 resolution, the driving module of the present embodiment can receive image data with 3 × 3 resolution (compressed into 1 × 3 resolution) without changing the performance of the driving module, and therefore, the processing performance of the driving module using the method is greatly improved.
For example, if the resolution of the existing driving module is 240 × 720, the existing driving module can receive the image data with the resolution of 240 × 720 at maximum, and after the method of the present embodiment, the image data with the resolution of 720 × 720 can be compressed into 240 × 720 for the existing driving module to process, so that the resolution of the original image data is improved on the basis of protecting the processing performance of the existing driving module.
It should be noted that the compression method of the present embodiment is similar to the compression method of the pixel structure of the color display device, and the principle and the process thereof are not repeated herein.
In an alternative embodiment, the step S2 "expands the grayscale information set to obtain a plurality of monochrome image data, wherein the monochrome image data has a one-to-one correspondence with the pixels of the monochrome display device" further includes:
s21, expanding each gray scale information set, respectively, and expanding the gray scale data of the compressed image data of each gray scale information set into the gray scale data of the plurality of preset colors, respectively, so as to generate monochrome image data.
In this step, the original image data is transmitted as a gray scale information set formed by compressing the image data, however, due to the resolution limit of the existing display panel, before the driving signal of each pixel is generated, the compressed image data needs to be expanded into monochrome image data for generating the driving signal, so that the display panel can display the image content according to the driving signal. Therefore, the expansion of the image data compressed in the gray scale information set is mainly performed in the step.
For example, taking one gray scale information set X 'shown in fig. 5B as an example, the gray scale information set includes compressed image data X1', X2 'and X3', and for the compressed image data X1 '(R ═ 255), the gray scale values of the gray scale data of different colors in monochrome display are expanded to correspond to the gray scale data of 3 preset colors, that is, to correspond to the original image data a in the first row and the first column in fig. 1, the expanded monochrome image data can be represented as (255,255,255) by using the characteristic that the gray scale values of the gray scale data of different colors are the same, that is, the compressed image data X1' (R ═ 255), the green gray scale data G ═ 255, and the blue gray scale data B ═ 255, so that the monochrome image data for generating the driving signal of the present embodiment does not lose the original image data in the process of compression and expansion, and can be compressed without loss and restored without loss.
FIG. 6 shows monochrome image data of FIG. 5b after expansion of the gray scale information set, as shown in FIG. 6, the 9 compressed image data of FIG. 5 after expansion generates 27 gray scale data corresponding to sub-pixels,
the compressed image data X1' (R ═ 255) is expanded into monochrome image data Y including grayscale data corresponding to red, green, and blue subpixels, that is, Y1, Y2, and Y3 shown in fig. 6. That is, X1' (R ═ 255) in the present embodiment is expanded to Y1(R ═ 255), Y2(G ═ 255), and Y3(B ═ 255), respectively, and the expanded monochrome image data Y can be represented as (255,255,255), corresponding to the original image data a in the first row and the first column in fig. 1.
For another example, the compressed image data X2' (G ═ 0) in the grayscale information set X is expanded into monochrome image data CC including the expanded grayscale data corresponding to the respective sub-pixels, that is, R ═ 0, G ═ 0, and B ═ 0. The monochrome image data corresponds to the original image data C in fig. 1. Similarly, the compressed image data X3' (B ═ 0) in the grayscale information set X is expanded into monochrome image data DD including the expanded grayscale data corresponding to the respective sub-pixels, i.e., R ═ 0, G ═ 0, and B ═ 0. The monochrome image data corresponds to the original image data D in fig. 1. That is to say, the extended monochrome image data can completely correspond to the original image data, and the monochrome image data used for generating the driving signal does not lose the original image data in the compression and extension processes, so the method can realize lossless compression and lossless restoration, and effectively ensure the image display effect.
In a specific example, still taking the resolution of the conventional driving module as 240 × 720 as an example, after step S1, the 720 × 720 image data can be compressed into 240 × 720 for processing by the conventional driving module, and further, the driving module performs restoration based on the compressed 240 × 720 image data, so that the 240 × 720 compressed data can be restored into 720 monochrome image data, and by using the characteristic of monochrome display, the process does not lose image data, thereby implementing lossless restoration of the compressed original image data.
It should be noted that the reduction process of the present embodiment is similar to the compression method of the pixel structure of the color display device, and the principle and the process thereof are not repeated herein.
It should be noted that, in the present embodiment, although the gray scale information set formed by the pixel structure of the color display device shown in fig. 5a and the gray scale information set formed by the pixel structure of the monochrome display device shown in fig. 5b are distinguished by the gray scale data of the sub-pixels and the gray scale data of the three middle colors in the above description, in practical applications, both of them may be transmitted and represented in a manner of R being 255, G being 255, and G being 255, that is, the present invention does not limit the specific expression of the transmitted image data, and a person skilled in the art should design according to practical applications, and compress and restore the image data to the design criteria by using the method of the present embodiment, and details thereof are not repeated.
And S3, generating a driving signal of each pixel according to the monochrome image data.
The monochrome image data is obtained based on the compression at step S1 and the restoration at step S2, and the drive signal for each pixel is generated using the monochrome image data at step S3.
In an alternative embodiment, the step S3 "generating the driving signals for the pixels according to the monochrome image data" further includes: generating a driving signal corresponding to the pixel according to the gray scale data of the plurality of preset colors in the monochrome image data.
In this embodiment, for a monochrome display device with a redesigned pixel structure, as shown in fig. 3b, each pixel includes a sub-pixel, and the light emitting area of the sub-pixel is exemplarily the same as that of the sub-pixel shown in fig. 3a, that is, the light emitting area of the sub-pixel of this embodiment is equal to the sum of the light emitting areas of the red sub-pixel, the green sub-pixel and the blue sub-pixel shown in fig. 3 a. With this structure, a pixel of this embodiment can emit light in a large area only by one driving signal.
In this embodiment, each monochrome image data can generate a driving signal, and the driving signal is directly inputted to the corresponding pixel. Illustratively, as shown in fig. 1, the monochrome image data obtained after the original image data a is compressed and restored is still (255,255,255), and a driving signal can be directly generated according to the monochrome image data and directly input into one pixel shown in fig. 3b, thereby realizing monochrome display of the display panel.
In a specific example, still taking the resolution of the conventional driving module as 240 × 720 as an example, after step S1, the 720 × 720 image data can be compressed into 240 × 720 for processing by the conventional driving module, and further, the driving module performs restoration based on the compressed 240 × 720 image data, can restore the 240 × 720 compressed data into 720 monochrome image data, and finally can display the 720 × 720 resolution image on the display panel, so that the resolution of the original image data is improved and the resolution of the displayed image is improved by the above-described compression and restoration method, on the basis of protecting the processing performance of the conventional driving module.
For the driving method applied to different pixel structures provided in the embodiment of the present invention, a person skilled in the art may select the driving method according to actual applications, and details are not described herein.
In an optional embodiment, before the compressing the received plurality of raw image data to generate a plurality of sets of grayscale information, the method further comprises: and converting a plurality of color image data into the plurality of original image data respectively, wherein each color image data comprises gray scale data of a plurality of sub-pixels corresponding to one pixel and color data of the plurality of sub-pixels.
The original image data of the present embodiment is image data applied to monochrome display, that is, in one original image data a shown in fig. 1, the gray scale values of the gray scale data of the respective sub-pixels are the same. In consideration of the wide application, before compression is performed using the original image data of the present embodiment, the color image data for color display is also converted, for example, by a gradation calculation formula to obtain converted gray image data, and then compression of the present embodiment is performed.
Since the color image data has color information for display on the basis of the gray scale data of the sub-pixels, and the color information is redundant data for monochrome display, the original image data of the present embodiment includes only the gray scale data of the plurality of sub-pixels, thereby further improving the processing performance of the driving module.
In accordance with another embodiment of the present invention, a driving module for a monochrome display device is provided, as shown in fig. 7, the driving module including:
the original image data compression module is used for compressing a plurality of received original image data to generate a plurality of gray scale information sets, wherein each gray scale information set comprises a preset number of different compressed original image data;
the gray scale information set expansion module is used for expanding the gray scale information set to obtain a plurality of monochrome image data, wherein the monochrome image data corresponds to the pixels of the monochrome display device one by one;
and the driving signal generation module is used for generating driving signals of all pixels according to the monochrome image data.
The driving module of the embodiment can improve the resolution of the received original image data on the basis of not changing the driving performance of the driving module, thereby improving the overall resolution of the display panel, and the original image data is not lost in the process, so that the original image data with high resolution can be effectively restored.
In a specific example, taking a night vision device to which the driving module is applied as an example, the original image data compression module and the gray scale information set expansion module may be respectively disposed at different module locations of the night vision device, for example, the original image data compression module is disposed in a processor, for example, a CPU, of the night vision device for compression of original image data; the gray scale information set expansion module can be arranged in a driving chip of the night vision device, and directly generates a driving signal after analyzing the compressed image data so as to improve the processing speed. That is to say, the present invention does not limit the relative position relationship of each module in the driving module, and a person skilled in the art should design according to practical application to implement the transmission function of the image data as a design criterion, which is not described herein again.
For a monochrome display device employing the pixel structure shown in fig. 3a, in an alternative embodiment, each of the pixels comprises a predetermined number of sub-pixels; the preset number is 3, and the pixels comprise red sub-pixels, green sub-pixels and blue sub-pixels; each original image data comprises gray scale data of the sub-pixels with the preset number, and the gray scale values of the gray scale data of each sub-pixel are the same; each compressed original image data comprises one gray scale data in the gray scale data of the sub-pixels with the preset number;
the original image data compression module is further used for extracting one gray scale data in the gray scale data of the sub-pixels with the preset number as the compressed image data of each original image data; a gray scale information set is generated according to a preset amount of compressed image data to obtain a plurality of gray scale information sets.
The gray scale information set expansion module is further used for respectively expanding each gray scale information set and respectively expanding the gray scale data of the compressed image data of each gray scale information set into the gray scale data of the sub-pixels with the preset number so as to generate monochrome image data.
The driving signal generating module is further used for generating driving signals of corresponding red sub-pixels, green sub-pixels and blue sub-pixels according to each gray scale data in the monochrome image data.
The driving module of the embodiment can directly adopt the pixel structure of the color display device, thereby reducing the development cost. For a monochrome display device employing the pixel structure shown in fig. 3b, in an alternative embodiment,
each original image data comprises a plurality of gray scale data of preset colors, the gray scale data of the preset colors correspond to one pixel, and the gray scale values of the gray scale data of the preset colors are the same;
each compressed original image data comprises one gray scale data in the gray scale data of the preset colors; the pixel comprises a sub-pixel; the preset colors are red, green and blue;
the original image data compression module is further used for extracting one gray scale data in the gray scale data of the preset colors as the compressed image data of each original image data; a gray scale information set is generated according to a preset amount of compressed image data to obtain a plurality of gray scale information sets.
The gray scale information set expansion module is further used for respectively expanding each gray scale information set and respectively expanding the gray scale data of the compressed image data of each gray scale information set into the gray scale data of the plurality of preset colors so as to generate monochrome image data.
The driving signal generating module is further configured to generate driving signals corresponding to the pixels according to the gray scale data of the plurality of preset colors in the monochrome image data.
In the driving module of the embodiment, only one driving signal line is needed for one pixel, so that the number of the driving signal lines is reduced, and the processing performance of the driving module is improved. For the driving method applied to different pixel structures provided in the embodiment of the present invention, a person skilled in the art may select the driving method according to actual applications, and details are not described herein.
Since the driving module provided by the embodiment of the present invention corresponds to the driving methods provided by the above several embodiments, the foregoing embodiments are also applicable to the driving module provided by the embodiment, and detailed description is not provided in the embodiment. Those skilled in the art will appreciate that the foregoing embodiments and the attendant advantages are also applicable to this embodiment, and therefore, the description of the same parts is omitted.
Another embodiment of the present invention provides a monochrome display device including the driving module according to the above embodiment. The monochrome display device may include an AR display device, a VR display device, a night vision device, and other electronic devices capable of implementing a monochrome display function, and those skilled in the art should determine an applicable monochrome display device according to practical applications.
It should be understood that the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention, and it will be obvious to those skilled in the art that other variations and modifications can be made on the basis of the above description, and all embodiments cannot be exhaustive, and all obvious variations and modifications belonging to the technical scheme of the present invention are within the protection scope of the present invention.
Claims (14)
1. A driving method for monochrome display, applied to a driving module of a monochrome display device, the method comprising:
compressing the received original image data to generate a plurality of gray scale information sets, wherein each gray scale information set comprises a preset number of original image data;
expanding the gray scale information set to obtain a plurality of monochrome image data, wherein the monochrome image data corresponds to pixels of the monochrome display device one by one;
a drive signal for each pixel is generated based on the monochrome image data.
2. The method of claim 1, wherein each of the pixels comprises a predetermined number of sub-pixels;
each original image data comprises gray scale data of the sub-pixels with the preset number, and the gray scale values of the gray scale data of each sub-pixel are the same;
each of the compressed original image data includes one of the gray-scale data of the predetermined number of sub-pixels.
3. The method of claim 2, wherein compressing the received plurality of raw image data to generate a plurality of grayscale information sets further comprises:
extracting one gray scale data in the gray scale data of the sub-pixels with the preset number as compressed image data of each original image data;
a gray scale information set is generated according to a preset amount of compressed image data to obtain a plurality of gray scale information sets.
4. The method of claim 3, wherein expanding the gray scale information set to obtain a plurality of monochrome image data comprises:
and respectively expanding each gray scale information set, and respectively expanding the gray scale data of the compressed image data of each gray scale information set into the gray scale data of the sub-pixels with the preset number so as to generate monochrome image data.
5. The method of claim 2, wherein the preset number is 3, and the pixels comprise red, green, and blue sub-pixels;
the generating a drive signal for each pixel from the monochrome image data further comprises:
and generating corresponding driving signals of the red sub-pixel, the green sub-pixel and the blue sub-pixel according to the gray scale data of each sub-pixel in the single-color image data.
6. The method according to claim 1, wherein each of the original image data comprises a plurality of predetermined color gray scale data corresponding to a pixel, and the gray scale values of the predetermined color gray scale data are the same;
each of the compressed original image data includes one of the gray-scale data of the plurality of predetermined colors.
7. The method of claim 6, wherein compressing the received plurality of raw image data to generate a plurality of grayscale information sets comprises:
extracting one gray scale data of the preset colors as compressed image data of each original image data;
a gray scale information set is generated according to a preset amount of compressed image data to obtain a plurality of gray scale information sets.
8. The method of claim 7, wherein said expanding said gray scale information set to obtain a plurality of monochrome image data comprises:
and respectively expanding each gray scale information set, and respectively expanding the gray scale data of the compressed image data of each gray scale information set into the gray scale data of the plurality of preset colors so as to generate monochrome image data.
9. The method of claim 6, wherein the pixel comprises a sub-pixel; the preset colors are red, green and blue;
the generating a drive signal for each pixel from the monochrome image data further comprises:
generating a driving signal corresponding to the pixel according to the gray scale data of the plurality of preset colors in the monochrome image data.
10. The method of any of claims 1-9, wherein prior to said compressing the received plurality of raw image data to generate a plurality of sets of grayscale information, the method further comprises: and converting a plurality of color image data into the plurality of original image data respectively, wherein each color image data comprises gray scale data of a plurality of sub-pixels corresponding to one pixel and color data of the plurality of sub-pixels.
11. A drive module, characterized in that the drive module comprises:
the original image data compression module is used for compressing a plurality of received original image data to generate a plurality of gray scale information sets, wherein each gray scale information set comprises a preset number of different compressed original image data;
the gray scale information set expansion module is used for expanding the gray scale information set to obtain a plurality of monochrome image data, wherein the monochrome image data corresponds to the pixels of the monochrome display device one by one;
and the driving signal generation module is used for generating driving signals of all pixels according to the monochrome image data.
12. The drive module of claim 11,
each pixel comprises a preset number of sub-pixels; the preset number is 3, and the pixels comprise red sub-pixels, green sub-pixels and blue sub-pixels; each original image data comprises gray scale data of the sub-pixels with the preset number, and the gray scale values of the gray scale data of each sub-pixel are the same; each compressed original image data comprises one gray scale data in the gray scale data of the sub-pixels with the preset number;
the original image data compression module is further used for extracting one gray scale data in the gray scale data of the sub-pixels with the preset number as the compressed image data of each original image data; generating a gray scale information set according to a preset amount of compressed image data to obtain a plurality of gray scale information sets;
the gray scale information set expansion module is further used for respectively expanding each gray scale information set and respectively expanding the gray scale data of the compressed image data of each gray scale information set into the gray scale data of the sub-pixels with the preset number so as to generate monochrome image data;
the driving signal generating module is further used for generating corresponding driving signals of the red sub-pixel, the green sub-pixel and the blue sub-pixel according to the gray scale data of each sub-pixel in the monochrome image data.
13. The drive module of claim 12,
each original image data comprises a plurality of gray scale data of preset colors, the gray scale data of the preset colors correspond to one pixel, and the gray scale values of the gray scale data of the preset colors are the same;
each compressed original image data comprises one gray scale data in the gray scale data of the preset colors; the pixel comprises a sub-pixel; the preset colors are red, green and blue;
the original image data compression module is further used for extracting one gray scale data in the gray scale data of the preset colors as the compressed image data of each original image data; generating a gray scale information set according to a preset amount of compressed image data to obtain a plurality of gray scale information sets;
the gray scale information set expansion module is further used for respectively expanding each gray scale information set and respectively expanding the gray scale data of the compressed image data of each gray scale information set into the gray scale data of the plurality of preset colors so as to generate monochrome image data;
the driving signal generating module is further configured to generate driving signals corresponding to the pixels according to the gray scale data of the plurality of preset colors in the monochrome image data.
14. A monochrome display device comprising a drive module according to any of claims 11-13.
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