CN107845372B - Driving method and driving device of display panel - Google Patents
Driving method and driving device of display panel Download PDFInfo
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- CN107845372B CN107845372B CN201711111130.2A CN201711111130A CN107845372B CN 107845372 B CN107845372 B CN 107845372B CN 201711111130 A CN201711111130 A CN 201711111130A CN 107845372 B CN107845372 B CN 107845372B
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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
- G09G3/34—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 by control of light from an independent source
- G09G3/36—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 by control of light from an independent source using liquid crystals
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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
- G09G3/34—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 by control of light from an independent source
- G09G3/36—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 by control of light from an independent source using liquid crystals
- G09G3/3607—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 by control of light from an independent source using liquid crystals for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels
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- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The invention discloses a driving method and a driving device of a display panel, wherein the driving method of a display comprises the following steps: receiving an image signal to be displayed, and acquiring a gray scale signal of a first pixel; calculating a gray scale signal of the first sub-pixel according to the gray scale signal of the first pixel to form a gray scale signal of the second pixel; and driving the first pixel by adopting the gray scale signal of the first pixel, and driving the first sub-pixels by adopting the gray scale signal of the first sub-pixel. The technical scheme of the invention adopts the RGB panel compatible RGBW technology, and reduces the manufacturing cost of the display panel.
Description
Technical Field
The present invention relates to the field of display panel technologies, and in particular, to a driving method for a display panel and a driving apparatus using the driving method.
Background
The RGBW technology is a new technology recently developed in the field of display technology, and the RGBW technology is to add a white sub-pixel to the original three primary colors of red/green/blue, and becomes a four-color type pixel design. Compared with the RGB display technology, the RGBW display technology has lower power consumption, and the energy-saving advantage of the RGBW technology is increasingly shown along with the gradual enhancement of the awareness of energy conservation and emission reduction of people.
The RGBW technology has the advantages of high brightness, high contrast, and 30% to 50% of backlight energy saving in white, but since the RGBW panel needs to add a new "W" (white) pixel, the manufacturing cost of LCD (Liquid Crystal Display) panel manufacturers is increased.
Disclosure of Invention
The invention mainly aims to provide a driving method of a display panel, aiming at reducing the manufacturing cost of the display panel by adopting the RGB technology compatible with the RGBW technology.
In order to achieve the above object, the present invention provides a driving method of a display panel, including:
receiving an image signal to be displayed, and acquiring a gray scale signal of a first pixel;
calculating a gray scale signal of the first sub-pixel according to the gray scale signal of the first pixel to form a gray scale signal of the second pixel;
and driving the first pixel by adopting the gray scale signal of the first sub-pixel, and driving the first sub-pixel by adopting the gray scale signal of the first sub-pixel.
In one embodiment, the calculating the gray scale signal of the second pixel according to the gray scale signal of the first pixel includes:
acquiring gray scale signals of two adjacent groups of first pixels, and calculating to obtain gray scale signals of one group of first sub-pixels according to the gray scale signals of the two groups of first pixels;
and converting the gray scale signals of two adjacent second pixels according to a sub-pixel sharing algorithm to obtain a gray scale signal of one second pixel.
In one embodiment, the converting the gray-scale signals of two adjacent second pixels into a gray-scale signal of one second pixel according to a sub-pixel sharing algorithm includes:
and converting the gray scale signals of the first sub-pixels of the two adjacent second pixels to obtain the gray scale signal corresponding to one first sub-pixel by adopting a sub-pixel sharing algorithm.
In an embodiment, the converting the gray scale signal of the first pixel according to the first gray scale signal of the two adjacent second pixels and converting the gray scale signal of the first sub-pixel of the two adjacent second pixels into the gray scale signal corresponding to the first sub-pixel by using the sub-pixel sharing algorithm includes:
calculating the gray scale signals of two adjacent first pixels to obtain the gray scale signal of one first pixel, and calculating the gray scale signals of two adjacent first sub-pixels to obtain the gray scale signal corresponding to one first sub-pixel.
In one embodiment, the gray scale signals driving the same first sub-pixel are all the same gray scale signals.
The present invention provides a driving apparatus of a display panel, the driving apparatus of the display panel including:
a receiving module: receiving an image signal to be displayed, and acquiring a gray scale signal of a first pixel;
a calculation module: calculating a gray scale signal of the first sub-pixel according to the gray scale signal of the first pixel to form a gray scale signal of the second pixel;
a driving module: and driving the first pixel by adopting the gray scale signal of the first pixel, and driving the first sub-pixels by adopting the gray scale signal of the first sub-pixels.
In one embodiment, the calculation module obtains gray scale signals of two adjacent groups of first pixels, and calculates to obtain gray scale signals of first sub-pixels according to the two groups of first pixel gray scale signals; and converting the gray scale signals of two adjacent second pixels according to a sub-pixel sharing algorithm to obtain a gray scale signal of one second pixel.
In an embodiment, the calculation module uses a sub-pixel sharing algorithm to obtain a gray scale signal of a first pixel according to the first gray scale signal conversion of two adjacent second pixels, and converts the first sub-pixel gray scale signal of two adjacent second pixels to obtain a gray scale signal corresponding to a first sub-pixel.
In an embodiment, the calculation module calculates the first gray scale signals of two adjacent second pixels to obtain a gray scale signal of a first pixel, and calculates the gray scale signals of the first sub-pixels of two adjacent second pixels to obtain a gray scale signal corresponding to a first sub-pixel.
The invention provides a driving device of a display panel, comprising:
the receiving module is used for receiving an image signal to be displayed and acquiring a gray scale signal of the first pixel;
the calculation module is used for calculating gray scale signals of two adjacent first pixels according to a preset weight proportion to obtain gray scale signals of the first sub-pixels and form gray scale signals of the second pixels;
a driving module for driving the first pixel with the gray scale signal of the first pixel and driving the first sub-pixel with the gray scale signal of the first sub-pixel
According to the technical scheme, the gray scale signal of the second pixel is formed by acquiring the gray scale signal of the first pixel and calculating the gray scale signal of the first sub-pixel through the gray scale signal of the first pixel. The first pixel in the second pixel sub-pixel is driven by adopting the gray scale signal of the first sub-pixel, and the first sub-pixel is driven by adopting the gray scale signal of the first sub-pixel, so that the RGBW technology is realized on the first panel, the RGB technology is compatible with the RGBW technology, and the manufacturing cost of the display panel is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a flowchart illustrating a driving method of a display panel according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a pixel display driving circuit according to the present invention;
FIG. 3 is a schematic diagram of a first sub-pixel calculated according to a first pixel;
FIG. 4 is a schematic diagram of converting gray scale signals of two second pixels to obtain a gray scale signal of one second pixel according to the present invention;
FIG. 5 is a functional block diagram of an embodiment of a driving apparatus for a display panel according to the present invention;
FIG. 6 is a functional block diagram of a display device according to an embodiment of the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is 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 addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The invention provides a driving method of a display panel.
In an embodiment of the present invention, as shown in fig. 1, the method for driving a display panel includes:
s100, receiving an image signal to be displayed, and acquiring a gray scale signal of a first pixel;
s200, calculating a gray scale signal of the first sub-pixel according to the gray scale signal of the first pixel to form a gray scale signal of the second pixel;
s300, driving the first pixel by adopting the gray scale signal of the first pixel, and driving the first sub-pixels by adopting the gray scale signal of the first sub-pixels.
In the embodiment of the present invention, the first pixel is RGB, the first sub-pixel is W, and the second pixel is RGBW. It is to be understood that R, G, B, W represents four sub-pixels of red, green, blue and white, respectively.
Referring to fig. 2, it should be noted that, in this embodiment, the RGBW technique is applied to an RGB liquid crystal panel. The liquid crystal pixels in each line of the liquid crystal panel are circularly arranged in sequence according to the sequence of R, G, B, and the arrangement sequence of each line is the same. The driving signals required for the RGB pixels are output by the source driver 100.
According to the technical scheme, the gray scale signal of the second pixel is formed by acquiring the gray scale signal of the first pixel and calculating the gray scale signal of the first sub-pixel through the gray scale signal of the first pixel. And then converting the gray scale signals of two adjacent second pixels to obtain a gray scale signal of one second pixel, and converting the gray scale component of the first sub-pixel into the gray scale signal of the first pixel with the same gray scale. And driving a first pixel in the sub-pixels of the second pixel by adopting the gray scale signal of the first pixel, and driving the first sub-pixels by adopting the gray scale signal of the first sub-pixels. Therefore, the RGBW technology is realized on the first panel, the RGB technology is compatible with the RGBW technology, and the manufacturing cost of the liquid crystal panel is reduced.
It will be readily appreciated that a set of RGBW pixels comprises two sets of RGB pixels, for a total of 6 sub-pixels.
With reference to fig. 2, the present invention adopts two adjacent groups of first pixels 10 (i.e. RGB) as an RGBW unit, and when driving, the driving method of one group of first pixels 10 is changed to the driving method of W, that is, the same gray scale signal is used to drive RGB simultaneously.
In one embodiment, the calculating the gray scale signal of the second pixel according to the gray scale signal of the first pixel includes:
acquiring gray scale signals of two adjacent groups of first pixels, and calculating to obtain gray scale signals of one group of first sub-pixels according to the gray scale signals of the two groups of first pixels;
and converting the gray scale signals of two adjacent second pixels according to a sub-pixel sharing algorithm to obtain a gray scale signal of one second pixel.
Referring to fig. 3 and 4, the original RGB pixel 10 is replaced with a "W" pixel, which forms an RGBW pixel 20 with an adjacent RGB pixel 10, by changing the driving method.
The two adjacent RGBW are converted into one RGBW because: the gray scale signal 1/3 is calculated as the original gray scale signal, but the number of liquid crystal pixels on the display is not changed, and the calculated gray scale signal is converted to match the number of liquid crystal pixels.
In one embodiment, the converting the gray-scale signals of two adjacent second pixels into a gray-scale signal of one second pixel according to a sub-pixel sharing algorithm includes:
and converting the gray scale signals of the first sub-pixels of the two adjacent second pixels to obtain the gray scale signal corresponding to one first sub-pixel by adopting a sub-pixel sharing algorithm.
Further, referring to fig. 4, in an embodiment, the step of converting the gray scale signals of the two adjacent first pixels 201 into the gray scale signal of one first pixel 202 and converting the gray scale signals of the two adjacent second pixels 20 into the gray scale signal of the corresponding one first sub-pixel by using the sub-pixel sharing algorithm includes:
calculating the average value of the gray scale signals of two adjacent first pixels 201 to obtain the gray scale signal of one first pixel 202, and calculating the average value of the gray scale signals of two adjacent first sub-pixels to obtain the gray scale signal corresponding to one first sub-pixel 203.
Then, each RGB pixel 203 is driven according to the calculated gray scale signal of the first pixel 202 and the calculated gray scale signal of the first sub-pixel 203.
In this embodiment, the gray scale signals of the W pixel corresponding to the RGB pixels are all the same gray scale signals. That is, the gray scale signals driving R, G and B sub-pixels corresponding to the W pixel are the same.
It should be noted that, in the sub-pixel sharing algorithm, a certain weight proportion is taken for gray scale signals corresponding to two adjacent sets of RGBW pixels, and then the sum of the two weight proportions is calculated, wherein the sum of the weight proportion coefficients is 1. In this embodiment, the gray scale signals of two adjacent RGBW pixels are respectively weighted by 50%, and then summed, so as to obtain the final gray scale signal for driving the RGBW pixel.
It is easy to understand that the technical scheme of the invention obtains the gray scale signals of a group of RGBW pixels through the gray scale signals of two adjacent groups of RGBW pixels and through the conversion of a sub-pixel sharing algorithm (SPR), then when the group of RGBW pixels are driven, the RGB is driven by the respective corresponding gray scale signals, and the W is driven by the gray scale signals of the RGB with the same gray scale. Therefore, the RGBW technology is realized on the first panel, the display effect is improved, and the production cost is reduced.
Referring to fig. 5, based on the driving method of the display panel, the present invention provides a driving apparatus of a display panel, including:
the receiving module 10: receiving an image signal to be displayed, and acquiring a gray scale signal of a first pixel;
the calculation module 20: calculating a gray scale signal of the first sub-pixel according to the gray scale signal of the first pixel to form a gray scale signal of the second pixel;
the driving module 30: and driving the first pixel by adopting the gray scale signal of the first pixel, and driving the first sub-pixels by adopting the gray scale signal of the first sub-pixels.
In one embodiment, the calculating module 20 obtains gray scale signals of two adjacent groups of first pixels, and calculates gray scale signals of first sub-pixels according to the two groups of first pixel gray scale signals; and converting the gray scale signals of two adjacent second pixels according to a sub-pixel sharing algorithm to obtain a gray scale signal of one second pixel.
In an embodiment, the calculating module 20 adopts a sub-pixel sharing algorithm, converts the two adjacent first pixel gray scale signals to obtain a gray scale signal of one first pixel, and converts the two adjacent first sub-pixel gray scale signals to obtain a gray scale signal corresponding to one first sub-pixel.
In an embodiment, the calculating module 20 calculates the first gray scale signals of two adjacent second pixels to obtain a gray scale signal of a first pixel, and calculates the gray scale signals of the first sub-pixels of two adjacent second pixels to obtain a gray scale signal corresponding to a first sub-pixel.
With reference to fig. 5, based on the above-mentioned driving method of the display panel, the present invention further provides a driving apparatus of the display panel, the driving apparatus of the display panel includes:
the receiving module 10 is used for receiving an image signal to be displayed and acquiring a gray scale signal of a first pixel;
the calculation module 20 is used for calculating gray scale signals of the first sub-pixels by respectively taking a preset weight proportion to the gray scale signals of the two adjacent first pixels to form gray scale signals of the second pixels;
the driving module 30 is configured to drive the first pixel with the gray scale signal of the first pixel, and drive the first sub-pixel with the gray scale signal of the first sub-pixel.
In this embodiment, the gray scale signals of two adjacent first pixels are respectively weighted by 50%, so that a more compromised gray scale signal can be obtained, and the display effect is better.
Referring to fig. 6, it should be noted that the driving apparatus of the display panel is applied to a display apparatus, the display apparatus includes a display panel 40 and the above-mentioned driving apparatus, and the specific structure of the driving apparatus refers to the above-mentioned embodiment.
It is noted that typical display device types include LCD (liquid crystal display), OLED (organic light emitting diode display), plasma display, and the like. The kinds of display panels in the LCD generally include VA, IPS, TN, TFT, and the like. This is not to be taken as an example.
The LCD can be a tablet computer display screen, a television display screen, a computer display screen and the like.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A method of driving a display panel, comprising:
receiving an image signal to be displayed, and acquiring a gray scale signal of a first pixel;
calculating a gray scale signal of a first sub-pixel according to the gray scale signal of the first pixel to form a gray scale signal of a second pixel;
and driving the first pixel by adopting a gray scale signal of the first pixel, and driving the first sub-pixel by adopting a gray scale signal of the first sub-pixel, wherein the gray scale signal of the first sub-pixel is the gray scale signal of the first pixel with the same gray scale as the first sub-pixel.
2. The method as claimed in claim 1, wherein the calculating the gray scale signal of the first sub-pixel according to the gray scale signal of the first pixel and the forming the gray scale signal of the second pixel comprises:
acquiring gray scale signals of two adjacent groups of first pixels, and calculating to obtain gray scale signals of a group of first sub-pixels according to the gray scale signals of the two groups of first pixels;
and converting the gray scale signals of two adjacent second pixels according to a sub-pixel sharing algorithm to obtain a gray scale signal of one second pixel.
3. The method of driving a display panel according to claim 2, further comprising:
and converting the gray scale signals of the first sub-pixels of the two adjacent second pixels to obtain the gray scale signal corresponding to one first sub-pixel by adopting a sub-pixel sharing algorithm.
4. The method as claimed in claim 3, wherein the converting the gray scale signal of the first pixel according to the gray scale signal of the first pixel of the two adjacent second pixels by using the sub-pixel sharing algorithm, and the converting the gray scale signal of the first sub-pixel of the two adjacent second pixels into the gray scale signal corresponding to the first sub-pixel comprises:
calculating the gray scale signals of two adjacent first pixels to obtain the gray scale signal of one first pixel, and calculating the gray scale signals of two adjacent first sub-pixels to obtain the gray scale signal corresponding to one first sub-pixel.
5. The method as claimed in claim 1, wherein the gray scale signals for driving the same first sub-pixel are all the same gray scale signals.
6. A driving apparatus of a display panel, comprising:
the receiving module is used for receiving an image signal to be displayed and acquiring a gray scale signal of the first pixel;
the calculation module is used for calculating a gray scale signal of the first sub-pixel according to the gray scale signal of the first pixel to form a gray scale signal of the second pixel;
the driving module is used for driving the first pixel by adopting the gray scale signal of the first pixel and driving the first sub-pixel by adopting the gray scale signal of the first sub-pixel, wherein the gray scale signal of the first sub-pixel is the gray scale signal of the first pixel with the same gray scale as the first sub-pixel.
7. The device as claimed in claim 6, wherein the calculating module obtains gray scale signals of two adjacent groups of first pixels, and calculates gray scale signals of the first sub-pixels according to the gray scale signals of the two groups of first pixels; and converting the gray scale signals of two adjacent second pixels according to a sub-pixel sharing algorithm to obtain a gray scale signal of one second pixel.
8. The device as claimed in claim 7, wherein the calculating module employs a sub-pixel sharing algorithm to convert the gray scale signal of the first pixel according to the gray scale signal of the first pixel of two adjacent second pixels, and convert the gray scale signal of the first sub-pixel of two adjacent second pixels to obtain the gray scale signal corresponding to the first sub-pixel.
9. The device as claimed in claim 8, wherein the calculating module calculates the gray scale signal of the first pixel of the two adjacent second pixels to obtain a gray scale signal of the first pixel, and calculates the gray scale signal of the first sub-pixel of the two adjacent second pixels to obtain a gray scale signal corresponding to the first sub-pixel.
10. A driving apparatus of a display panel, comprising:
the receiving module is used for receiving an image signal to be displayed and acquiring a gray scale signal of the first pixel;
the calculation module is used for calculating gray scale signals of two adjacent first pixels according to a preset weight proportion to obtain gray scale signals of the first sub-pixels and form gray scale signals of the second pixels;
the driving module is used for driving the first pixel by adopting the gray scale signal of the first pixel and driving the first sub-pixel by adopting the gray scale signal of the first sub-pixel, wherein the gray scale signal of the first sub-pixel is the gray scale signal of the first pixel with the same gray scale as the first sub-pixel.
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