CN112669780A - Image display method, liquid crystal display device, apparatus, and storage medium - Google Patents
Image display method, liquid crystal display device, apparatus, and storage medium Download PDFInfo
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Abstract
The invention discloses an image display method, a liquid crystal display device, equipment and a storage medium, and belongs to the technical field of display. The image display method includes: converting the RGB signal of each frame of image to be displayed into an RGG' B signal; performing frequency multiplication on the RGG' B signal to obtain a frequency multiplication signal of each frame of image to be displayed; screening out a first frequency multiplication signal comprising R, G and B data from the frequency multiplication signal, and screening out a second frequency multiplication signal comprising R, G' and B data from the frequency multiplication signal; and in the original frame time of the image to be displayed, controlling the liquid crystal display panel to sequentially display the image and controlling the backlight module to sequentially adjust the backlight brightness according to the first frequency doubling signal and the second frequency doubling signal so as to display the four-primary-color output image of the image to be displayed on the liquid crystal display device. The invention can display four primary colors display images on the liquid crystal display device.
Description
Technical Field
The present invention relates to the field of display technologies, and in particular, to an image display method, a liquid crystal display device, an apparatus, and a storage medium.
Background
Currently, in an image display device such as a liquid crystal display panel (LCD) or an organic light emitting display panel (OLED), it is common that three primary colors of red R, green G, and blue B can be expressed. However, the expressible color space of the three primary colors is limited, and some color gamuts can not be expressed, and particularly, the expressible colors of the green color space are more, so that the second green G' which is inconsistent with the dominant wavelength of the green G can be used for supplementing the expressive colors, and the color gamut of the display device is expanded.
There is a problem how to drive the liquid crystal display device to display an image by four primary colors.
Disclosure of Invention
The invention mainly aims to provide an image display method, a liquid crystal display device, equipment and a storage medium, and aims to solve the technical problem of how to display an image on the liquid crystal display device by four primary colors.
In order to achieve the above object, the present invention provides an image display method for a liquid crystal display device, the liquid crystal display device includes a liquid crystal display panel and a backlight module, the liquid crystal display panel includes G pixels, the backlight module includes a second green light source, the second green light source can emit G 'light, and the wavelength of the G' light is not consistent with the wavelength of the G light;
the image display method includes:
converting the RGB signal of each frame of image to be displayed into an RGG' B signal;
performing frequency multiplication on the RGG' B signal to obtain a frequency multiplication signal of each frame of image to be displayed;
screening out a first frequency multiplication signal comprising R, G and B data from the frequency multiplication signal, and screening out a second frequency multiplication signal comprising R, G' and B data from the frequency multiplication signal;
controlling a liquid crystal display panel to sequentially display images and controlling a backlight module to sequentially adjust backlight brightness according to a first frequency doubling signal and a second frequency doubling signal within the original frame time of the image to be displayed so as to display a four-primary-color output image of the image to be displayed on a liquid crystal display device; the G pixels in the liquid crystal display panel display images based on G 'data in the second frequency doubling signals, and the second green light source adjusts backlight brightness based on the G' data in the second frequency doubling signals.
Optionally, in an original frame time of an image to be displayed, controlling the liquid crystal display panel to sequentially display the image according to the first frequency doubling signal and the second frequency doubling signal, including:
controlling R pixels in the liquid crystal display panel to display images based on R data in a first frequency doubling signal, controlling G pixels in the liquid crystal display panel to display images based on G data in the first frequency doubling signal, and controlling B pixels in the liquid crystal display panel to display images based on B data in the first frequency doubling signal within a first half frame time of an original one frame time of the images to be displayed;
and in the second half frame time of the original one-frame time of the image to be displayed, controlling the R pixel in the liquid crystal display panel to display the image based on the R data in the first frequency doubling signal, controlling the G pixel in the liquid crystal display panel to display the image based on the G' data in the first frequency doubling signal, and controlling the B pixel in the liquid crystal display panel to display the image based on the B data in the first frequency doubling signal.
Optionally, in an original frame time of an image to be displayed, according to the first frequency doubling signal and the second frequency doubling signal, controlling the backlight module to sequentially adjust the backlight brightness, including:
obtaining a first backlight control coefficient according to the first frequency multiplication signal, and obtaining a second backlight control coefficient according to the second frequency multiplication signal;
and controlling the backlight module to adjust the sequential backlight brightness according to the first backlight control coefficient and the second backlight control coefficient within the original frame time of the image to be displayed.
Optionally, in an original frame time of an image to be displayed, controlling the backlight module to sequentially adjust the backlight brightness according to the first backlight control coefficient and the second backlight control coefficient, including:
controlling a backlight module to sequentially adjust the brightness of the emitted R light, G light and B light according to a first backlight control coefficient in a first half frame time of an original frame time of an image to be displayed;
and controlling the backlight module to sequentially adjust the brightness of the emitted R light, G' light and B light according to the second backlight control coefficient in the second half frame time of the original frame time of the image to be displayed.
In a second aspect, the present invention provides a liquid crystal display device comprising:
the backlight module comprises a second green light source which can emit G 'light, and the wavelength of the G' light is different from that of the G light;
the image processing unit is used for converting the RGB signals of each frame of image to be displayed into RGG' B signals;
the image frequency doubling unit is used for receiving the RGG 'B signals sent by the image processing unit, performing frequency doubling processing on the RGG' B signals and obtaining frequency doubling signals of each frame of images to be displayed; screening out a first frequency multiplication signal comprising R, G and B data from the frequency multiplication signal, and screening out a second frequency multiplication signal comprising R, G' and B data from the frequency multiplication signal;
the liquid crystal display panel comprises R pixels, G pixels and B pixels and is used for receiving a first frequency doubling signal and a second frequency doubling signal which are sequentially sent by the image frequency doubling unit and sequentially displaying images according to the first frequency doubling signal and the second frequency doubling signal in an original frame time of an image to be displayed, wherein the G pixels in the liquid crystal display panel display the images based on G' data in the second frequency doubling signal;
the backlight control unit is used for receiving the RGG 'B signal sent by the image processing unit, performing frequency multiplication processing on the RGG' B signal and obtaining a frequency multiplication signal of each frame of image to be displayed; screening a first frequency multiplication signal comprising R, G and B data from the frequency multiplication signal, and screening a second frequency multiplication signal comprising R, G' and B data from the frequency multiplication signal; and controlling the backlight module to sequentially adjust the backlight brightness according to the first frequency doubling signal and the second frequency doubling signal.
Optionally, the backlight module is further configured to obtain a first backlight control coefficient according to the first frequency doubling signal, and obtain a second backlight control coefficient according to the second frequency doubling signal; and controlling the backlight module to sequentially adjust the backlight brightness according to the first backlight control coefficient and the second backlight control coefficient within the original frame time of the image to be displayed.
Optionally, the backlight module is further configured to control the backlight module to sequentially adjust the brightness of the emitted R light, G light, and B light according to the first backlight control coefficient within a first half frame time of an original one frame time of the image to be displayed; and controlling the backlight module to sequentially adjust the brightness of the emitted R light, G' light and B light in a second half frame time of the original frame time of the image to be displayed according to a second backlight control coefficient.
Optionally, the backlight module may satisfy any one of the following conditions:
the backlight module also comprises a white light source;
the backlight module also comprises a red light source, a blue light source and a green light source; or
The backlight module also comprises a purple light source and a green light source.
In a third aspect, the present invention also provides an image display apparatus comprising a memory, a processor and an image display program stored on the memory and executable on the processor, the image display program being configured to implement the steps of the image display method described above.
In a fourth aspect, the present invention also provides a computer readable storage medium, on which an image display program is stored, which when executed by a processor implements the steps of the image display method as described above.
The technical scheme of the invention includes that after RGB signals of each frame of image to be displayed are converted into RGG ' B signals, frequency multiplication is carried out on the RGG ' B signals, then a first frequency multiplication signal comprising R, G and B data and a second frequency multiplication signal comprising R, G ' and B data are screened out, so that in the original frame time of the image to be displayed, a liquid crystal display panel is controlled to sequentially display the image and a backlight module is controlled to sequentially adjust backlight brightness according to the first frequency multiplication signal and the second frequency multiplication signal, so that four primary color output images of the image to be displayed are displayed on the liquid crystal display device, G pixels in the liquid crystal display panel display the image based on G ' data in the second frequency multiplication signal, and a second green light source adjusts the backlight brightness based on G ' light control data in the second frequency multiplication signal. The backlight module of the liquid crystal display panel used by the image display method is additionally provided with a second green light source capable of emitting G' light, so that the display of four primary colors is realized under the condition that the liquid crystal display panel is formed by R, G pixels and B pixels. The image display method provided by the invention replaces more time by frame doubling processing of the RGG 'B signal of the image to be displayed, so that two frames of images with different color gamuts of the same frame of image to be displayed, namely the RGB image and the RG' B image, are displayed in the original frame time after the backlight module is matched with the liquid crystal display panel, the liquid crystal display device can display the image to be displayed with four primary colors, and the vivid and real image display effect is achieved.
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 an image display method according to an embodiment of the present invention;
FIG. 2 is a block diagram of a liquid crystal display device according to the present invention;
FIG. 3 is a schematic diagram of a first frequency doubling signal and a second frequency doubling signal in the image display method according to 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 all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
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, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. 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 three primary colors refer to primary colors which cannot be obtained by mixing other colors, and since R, G and pyramidal cells of three different colors of B are perceived by human eyes, a color space can be generally expressed by three primary colors of R, G and B. However, the expressible color space of the three primary colors is limited, some color gamut can not be expressed, particularly, the expressible color of the green color space is more, so that on the basis of the three primary colors of RGB, a color G' is introduced to cooperate with the three primary colors to express the color, and the color gamut is expanded. Wherein, G 'still belongs to the green color space, but the wavelength of the G' light is not consistent with that of the G light. With the development of science and technology, some materials can realize the wavelength which cannot be realized before. For example, quantum dots, different wavelengths are expressed by adjusting the diameter of the quantum dots, so that the light emission of four primary colors can be realized on the basis. However, there is a problem how to drive the display device to display an image by four primary colors.
Therefore, the invention provides an image display method, which adds a second green light source capable of emitting G' light in a backlight module of a liquid crystal display panel, thereby realizing the display of four primary colors without changing the liquid crystal display panel composed of R, G and B three-color pixels. In the image display method provided by the invention, more time is exchanged after the RGG 'B signal frame doubling processing of the image to be displayed, so that two frames of images with different color gamuts, namely an RGB image and an RG' B image, of the same frame of image to be displayed are sequentially displayed in the original frame time after the backlight module is matched with the liquid crystal display panel, the liquid crystal display device can display the image to be displayed with four primary colors, and a more vivid and real image display effect is achieved.
The inventive concept of the present application is further illustrated below with reference to some specific embodiments.
Referring to fig. 2, in an embodiment of the present invention, an lcd device includes: the liquid crystal display device includes a liquid crystal display panel 200, a backlight module 100, an image processing unit 500, an image frequency doubling unit 400, and a backlight control unit 300.
The display device may be a liquid crystal display device, and the liquid crystal display panel 200 includes R pixels, G pixels, and B pixels, so that a corresponding image may be displayed according to a received signal. The liquid crystal display panel 200, as an inactive light emitting device, does not have a light emitting characteristic, and thus it is necessary to rely on the emission of the light source of the backlight module 100 to display an image. In order to realize the display of four primary colors, in this embodiment, the backlight module 100 includes a second green light source, and the second green light source can emit G 'light, where the wavelength of the G' light is different from the wavelength of the G light. That is, the spectrum of the light emitted from the backlight module 100 includes four peaks of red R, green G, second green G' and blue B.
For example, in some embodiments, the backlight module 100 includes a white light source and a second green light source. The white light source may be a white LED that emits light having a spectrum that includes at least three peaks of red, green, and blue. The second green light source can emit G' light.
Or in other embodiments, the backlight module 100 includes a red light source, a blue light source, a green light source, and a second green light source. The red light source, the blue light source and the green light source may be LED structures. The second green light source can emit G' light.
Or in some other embodiments, the backlight module 100 includes a violet light source, a green light source and a second green light source. The violet light source includes a blue LED chip and a red phosphor or red quantum dots, so that the emitted light has two peaks of red and blue. The second green light source can emit G' light.
An image processing unit 500 for converting the RGB signals of each frame of the image to be displayed into RGG' B signals. As will be readily understood, the image capture unit of the liquid crystal display device converts the image data of the image to be displayed into RGB signals through the decoding module, and transmits the RGB signals to the image processing unit 500. The image processing unit 500 receives the RGB signals, counts the display color gamut of each point, and completes the conversion from three primary colors to four primary colors, so that the image data of the image to be displayed is converted from the original RGB signals to RGG' B signals, thereby allowing more color spaces.
Referring to fig. 3, the image frequency doubling unit 400 is respectively connected to the image processing unit 500 and the liquid crystal display panel 200. The image frequency doubling unit 400 is configured to receive the RGG 'B signal sent by the image processing unit 500, perform frequency doubling processing on the RGG' B signal, and obtain a frequency doubled signal of each frame of an image to be displayed; a first frequency multiplied signal including R, G and B data is filtered out of the frequency multiplied signals, and a second frequency multiplied signal including R, G' and B data is filtered out of the frequency multiplied signals.
The frequency doubling processing enables the frequency of the image to be displayed to be increased, for example, the 60Hz image to be displayed is changed into a 120Hz image after frequency doubling, and therefore more time can be replaced. After the frequency doubling processing, a first frequency doubling signal including R, G and B data is selected from the frequency doubling signals and is first transmitted to the liquid crystal display panel 200, so that the RGB pixels of the liquid crystal display panel 200 are controlled to display an image according to R, G and B data in the first frequency doubling signal. It is easy to understand that the specific steps and processes of displaying images by the RGB pixels of the lcd panel 200 according to the R, G signal and the B data are known to those skilled in the art how to implement the specific steps and processes, and will not be described herein again. Then, the second frequency doubling signal including R, G 'and B data, which is selected from the frequency doubling signals, is transmitted to the liquid crystal display panel 200 after the first frequency doubling signal is transmitted, so that the RGB pixels of the liquid crystal display panel 200 are controlled to display an image according to R, G' and B data in the first frequency doubling signal. At this time, the G pixels of the liquid crystal display panel 200 display an image based on the G' data in the second frequency-multiplied signal. That is, in this embodiment, the case where the liquid crystal display panel 200 is configured by R, G and B three color pixels is not changed.
Since the first frequency multiplied signal and the second frequency multiplied signal are sequentially transmitted, the RGB image transmitted by the first frequency multiplied signal may be treated as an odd frame, and the RG' B image transmitted by the second frequency multiplied signal may be treated as an even frame. Therefore, in the present embodiment, when the liquid crystal display panel 200 displays an image, during one frame time of the original image, the odd frame displays the RGB color gamut image of the image to be displayed, and the even frame displays the RG' B color gamut image of the image to be displayed.
It should be noted that, in this embodiment, the order of the first frequency multiplication signal and the second frequency multiplication signal is not limited, and the second frequency multiplication signal with R, G 'and B data may be sent first, and then the first frequency multiplication signal with R, G and B data is sent, so that in one frame time of the original image, the odd frame displays the RG' B color gamut image of the image to be displayed, and the even frame displays the RGB color gamut signal of the image to be displayed.
Referring to fig. 3, the backlight control unit 300 is respectively connected to the image processing unit 500 and the backlight module 100. The RGG ' B signal processing unit 500 is configured to receive the RGG ' B signal and perform frequency multiplication on the RGG ' B signal to obtain a frequency multiplication signal of each frame of image to be displayed; screening a first frequency multiplication signal comprising R, G and B data from the frequency multiplication signal, and screening a second frequency multiplication signal comprising R, G' and B data from the frequency multiplication signal; and controlling the backlight module 100 to sequentially adjust the backlight brightness according to the first frequency doubling signal and the second frequency doubling signal.
The backlight control unit 300 receives the image and transmits a backlight control coefficient according to the image to control the backlight brightness, and therefore, in some embodiments, the backlight module 100 is configured to obtain a first backlight control coefficient according to the first frequency doubling signal and obtain a second backlight control coefficient according to the second frequency doubling signal. Since the first frequency doubling signal does not include G' data, the backlight control coefficient of the second green light source in the backlight module 100 cannot be obtained.
And controlling the backlight module 100 to sequentially adjust the backlight brightness according to the first backlight control coefficient and the second backlight control coefficient within the original frame time of the image to be displayed. Since the second frequency-doubling signal does not include G data, the backlight module 100 obtains the backlight control coefficient of the second green light source.
The backlight control unit 300 also performs frequency doubling on the RGG 'B signal after receiving the RGG' B signal sent by the image processing unit 500, so that the backlight in the backlight module 100 matches with the image of the liquid crystal display panel 200. The frequency doubling processing enables the frequency of the image to be displayed to be increased, for example, the 60Hz image to be displayed is changed into a 120Hz image after frequency doubling, and therefore more time can be replaced. After the frequency doubling processing, a first frequency doubling signal including R, G and B data is screened out from the frequency doubling signal, and a corresponding first backlight control coefficient is obtained according to the first frequency doubling signal, so that the backlight brightness of the backlight module 100 is controlled according to the first backlight control coefficient. Then, a second frequency doubling signal including R, G' and B data is selected from the frequency doubling signals, and a corresponding second backlight control coefficient is obtained according to the second frequency doubling signal, so that the backlight brightness of the backlight module 100 is controlled according to the second backlight control coefficient.
Specifically, the first backlight control coefficient obtained based on the first frequency doubling signal relates to R, G and B light, so that the white light LED of the backlight module 100, or the red light source, the blue light source, and the green light source, or the brightness of the purple light source and the green light source can be controlled based on the first backlight control coefficient, and the liquid crystal display device can normally display the image to be displayed by matching with the RGB color gamut image displayed on the liquid crystal display panel 200 at this time. At this time, the second green light source in the backlight module 100 does not emit light. The second backlight control coefficient obtained based on the second frequency doubling signal relates to R, G' and B light, so that the second green light source of the backlight module 100 can be controlled to emit light based on the second backlight control coefficient, and the red light source and the blue light source are controlled to emit light, or the violet light source is controlled to emit light, at this time, when the second green light source emits light, the white light source or the green light source in the above embodiment does not emit light.
In an embodiment, the backlight module 100 includes a red light source, a green light source, a blue light source and a second green light source, and therefore, the backlight module 100 can be controlled to sequentially adjust the luminances of the R light, the G light and the B light emitted according to the first backlight control coefficient within a first half frame time of an original frame time of an image to be displayed, that is, to control the luminance of the red light source, the green light source and the blue light source.
And in the second half frame time of the original frame time of the image to be displayed, controlling the backlight module 100 to sequentially adjust the brightness of the emitted R light, G' light and B light according to the second backlight control coefficient, namely controlling the brightness of the red light source, the second green light source and the blue light source.
In the backlight control unit 300, since the first frequency multiplication signal and the second frequency multiplication signal are sequentially transmitted, the first frequency multiplication signal may be treated as an odd frame, and the second frequency multiplication signal may be treated as an even frame. Therefore, in the present embodiment, when the backlight module 100 emits light, the spectrum of the light emitted in the odd frames has R, G and B peaks and the spectrum of the light emitted in the even frames has R, G' and B peaks in 3 peaks during one frame time of the original image.
It should be noted that, similar to the frequency doubling processing unit, the sequence of the first frequency doubling signal and the second frequency doubling signal in this embodiment is not limited, and the second frequency doubling signal with R, G 'and B data may be sent first, and then the first frequency doubling signal with R, G and B data may be sent, in one frame time of the original image, the spectrum of the light emitted in the odd frame has 3 peaks, R, G and B, and the spectrum of the light emitted in the even frame has 3 peaks, R, G' and B. It should be noted that the first frequency doubling signal and the second frequency doubling signal in the image frequency doubling unit 400 and the backlight control unit 300 are identical, that is, when the image frequency doubling unit 400 transmits the first frequency doubling signal, the backlight control unit 300 simultaneously transmits the first backlight control coefficient. That is, when the image frequency doubling unit 400 sends the second frequency doubling signal, the backlight control unit 300 sends the second backlight control coefficient at the same time.
Referring to fig. 3, in the embodiment, in a frame time of an original image, when the image is displayed, the liquid crystal display panel 200 displays an RGB color gamut image of the image to be displayed in an odd frame, and the spectrum of the light emitted by the backlight module 100 has R, G peaks and B peaks in total, and when the image is displayed in an even frame, the liquid crystal display panel 200 displays an RG 'B color gamut image of the image to be displayed in an even frame, and at this time, the spectrum of the light emitted by the backlight module 100 has R, G' peaks and B peaks in total. Therefore, the embodiment replaces more time by frequency doubling processing, and realizes the display of four primary colors by adjusting backlight and liquid crystal pixels to express different colors within one frame time of an original image. The image required to be displayed by the liquid crystal display device can achieve more vivid and real image display effect, and the cost is reduced, so that the liquid crystal display device has good market prospect.
In a second aspect, the invention also provides an image display method. Referring to fig. 1, fig. 1 is a schematic flow chart of an image display method according to the present invention.
In this embodiment, the image display method includes:
step S100, converting the RGB signals of each frame of image to be displayed into RGG' B signals.
Specifically, the image processing unit 500 counts the display color gamut of each point according to the data value of the image, and completes the conversion from three primary colors to four primary colors, and at this time, the image data is converted from the original RGB signal to the RGG' B signal.
And S200, performing frequency multiplication on the RGG' B signal to obtain a frequency multiplication signal of each frame of image to be displayed.
This step is used to trade the image frames for more time by increasing or decreasing their frequency. For example, an image of 60HZ is doubled to an image of 120HZ, so that two frames of images can be displayed within one frame time of the original image.
Step S300, screening out a first frequency multiplication signal comprising R, G and B data from the frequency multiplication signal, and screening out a second frequency multiplication signal comprising R, G' and B data from the frequency multiplication signal.
Referring to fig. 3, in this step, the first frequency multiplied signal only includes R, G and B data, but does not include G' data. And the second frequency-multiplied signal includes R, G' and B data, but no G data. And the first frequency multiplication signal and the second frequency multiplication signal are sequentially transmitted.
It will be readily appreciated that in some embodiments, the second multiplied signal may be obtained by first filtering and then obtaining the first multiplied signal.
Step S400, in the original frame time of the image to be displayed, according to the first frequency doubling signal and the second frequency doubling signal, controlling the liquid crystal display panel 200 to sequentially display the image and controlling the backlight module 100 to sequentially adjust the backlight brightness so as to display the four-primary-color output image of the image to be displayed on the liquid crystal display device; the G pixels in the liquid crystal display panel 200 display images based on the G 'data in the second frequency-multiplied signal, and the second green light source adjusts the backlight brightness based on the G' data in the second frequency-multiplied signal.
This step is used to control the liquid crystal display panel 200 to cooperate with the backlight module 100 to display a four primary color image.
In an original frame time of an image to be displayed, the method for controlling the liquid crystal display panel 200 to sequentially display the image according to the first frequency doubling signal and the second frequency doubling signal includes:
step S401, in a first half frame time of an original one frame time of an image to be displayed, controlling an R pixel in the liquid crystal display panel 200 to display the image based on R data in the first frequency doubling signal, controlling a G pixel in the liquid crystal display panel 200 to display the image based on G data in the first frequency doubling signal, and controlling a B pixel in the liquid crystal display panel 200 to display the image based on B data in the first frequency doubling signal.
Step S402, in the second half frame time of the original one-frame time of the image to be displayed, controlling the R pixel in the liquid crystal display panel 200 to display the image based on the R data in the first frequency doubling signal, controlling the G pixel in the liquid crystal display panel 200 to display the image based on the G' data in the first frequency doubling signal, and controlling the B pixel in the liquid crystal display panel 200 to display the image based on the B data in the first frequency doubling signal.
In this step, at this time, the G pixels of the liquid crystal display panel 200 display an image based on the G' data in the second frequency-multiplied signal. That is, in this embodiment, the case where the liquid crystal display panel 200 is configured by R, G and B three color pixels is not changed.
In an original frame time of an image to be displayed, the backlight module 100 is controlled to sequentially adjust the backlight brightness according to the first frequency doubling signal and the second frequency doubling signal, including:
step S403, obtaining a first backlight control coefficient according to the first frequency multiplication signal, and obtaining a second backlight control coefficient according to the second frequency multiplication signal;
step S404, controlling the backlight module 100 to adjust the sequential backlight brightness according to the first backlight control coefficient and the second backlight control coefficient within the original frame time of the image to be displayed.
Specifically, the backlight control unit 300, after receiving the RGG 'B signal sent by the image processing unit 500, also performs frequency doubling on the RGG' B signal, so that the backlight in the backlight module 100 matches the image of the liquid crystal display panel 200. The frequency doubling processing enables the frequency of the image to be displayed to be increased, for example, the 60Hz image to be displayed is changed into a 120Hz image after frequency doubling, and therefore more time can be replaced. After the frequency doubling processing, a first frequency doubling signal including R, G and B data is screened out from the frequency doubling signal, and a corresponding first backlight control coefficient is obtained according to the first frequency doubling signal, so that the backlight brightness of the backlight module 100 is controlled according to the first backlight control coefficient. Then, a second frequency doubling signal including R, G' and B data is selected from the frequency doubling signals, and a corresponding second backlight control coefficient is obtained according to the second frequency doubling signal, so that the backlight brightness of the backlight module 100 is controlled according to the second backlight control coefficient.
Specifically, step S404 includes:
(a) in a first half frame time of an original frame time of an image to be displayed, the backlight module 100 is controlled to sequentially adjust the brightness of the emitted R light, G light and B light according to the first backlight control coefficient.
(b) And in the second half frame time of the original frame time of the image to be displayed, controlling the backlight module 100 to sequentially adjust the brightness of the emitted R light, G' light and B light according to the second backlight control coefficient.
Specifically, the first backlight control coefficient obtained based on the first frequency doubling signal relates to R, G and B light, so that the white light LED of the backlight module 100, or the red light source, the blue light source, and the green light source, or the brightness of the purple light source and the green light source can be controlled based on the first backlight control coefficient, and the liquid crystal display device can normally display the image to be displayed by matching with the RGB color gamut image displayed on the liquid crystal display panel 200 at this time. At this time, the second green light source in the backlight module 100 does not emit light. The second backlight control coefficient obtained based on the second frequency doubling signal relates to R, G' and B light, so that the second green light source of the backlight module 100 can be controlled to emit light based on the second backlight control coefficient, and the red light source and the blue light source are controlled to emit light, or the violet light source is controlled to emit light, at this time, when the second green light source emits light, the white light source or the green light source in the above embodiment does not emit light. And since the first frequency doubling signal does not include G' data, the backlight control coefficient of the second green light source in the backlight module 100 cannot be obtained. Similarly, since the second frequency-doubling signal does not include G data, the backlight module 100 obtains the backlight control coefficient of the second green light source.
The lcd panel 200 and the backlight module 100 sequentially perform operations according to the first frequency doubling signal and the second frequency doubling signal, so that the displayed image is controlled according to the first frequency doubling signal as an odd frame, and the displayed image is controlled according to the second frequency doubling signal as an even frame. Therefore, during the original one frame time, when the liquid crystal display panel 200 is displaying an image, during the odd frame, the liquid crystal display panel 200 displays the RGB color gamut image of the image to be displayed, and the spectrum of the light emitted by the backlight module 100 has R, G peaks and B peaks in total, while during the even frame, the liquid crystal display panel 200 displays the RG 'B color gamut image of the image to be displayed, and at this time, the spectrum of the light emitted by the backlight module 100 has R, G' peaks and B peaks in total of 3. Therefore, the embodiment replaces more time by frequency doubling processing, and realizes the display of four primary colors by adjusting backlight and liquid crystal pixels to express different colors within one frame time of an original image. The image required to be displayed by the liquid crystal display device can achieve more vivid and real image display effect, and the cost is reduced, so that the liquid crystal display device has good market prospect.
In addition, the present invention also provides an image display apparatus, comprising a memory, a processor, and an image display program stored on the memory and executable on the processor, the image display program being configured to implement the steps of the above-described image display method embodiments. The processor may include one or more processing cores, such as a 4-core processor, an 8-core processor, and so forth. The processor may be implemented in at least one hardware form of a DSP (Digital Signal Processing), an FPGA (Field-Programmable Gate Array), and a PLA (Programmable Logic Array). The processor may also include a main processor and a coprocessor, where the main processor is a processor for processing data in an awake state, and is also called a Central Processing Unit (CPU); a coprocessor is a low power processor for processing data in a standby state. The memory may include one or more computer-readable storage media, which may be non-transitory. The memory may also include high speed random access memory, as well as non-volatile memory, such as one or more magnetic disk storage devices, flash memory storage devices. In some embodiments, a non-transitory computer readable storage medium in memory is used to store at least one instruction for execution by processor 301 to implement the advertisement address determination methods provided by method embodiments herein.
Furthermore, the present invention also provides a computer-readable storage medium having stored thereon an image display program, which when executed by a processor implements the steps of the image display method as described above. In addition, the beneficial effects of the same method are not described in detail. For technical details not disclosed in embodiments of the computer-readable storage medium referred to in the present application, reference is made to the description of embodiments of the method of the present application. It is determined that, by way of example, the program instructions may be deployed to be executed on one computing device or on multiple computing devices at one site or distributed across multiple sites and interconnected by a communication network.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by a computer program, which can be stored in a computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. The storage medium may be a magnetic disk, an optical disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), or the like.
It should be noted that the above-described embodiments of the apparatus are merely schematic, where units illustrated as separate components may or may not be physically separate, and components illustrated as units may or may not be physical units, may be located in one place, or may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. In addition, in the drawings of the embodiment of the apparatus provided by the present invention, the connection relationship between the modules indicates that there is a communication connection between them, and may be specifically implemented as one or more communication buses or signal lines. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that the present invention may be implemented by software plus necessary general hardware, and may also be implemented by special hardware including special integrated circuits, special CPUs, special memories, special components and the like. Generally, functions performed by computer programs can be easily implemented by corresponding hardware, and specific hardware structures for implementing the same functions may be various, such as analog circuits, digital circuits, or dedicated circuits. However, the implementation of a software program is a more preferable embodiment for the present invention. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, where the computer software product is stored in a readable storage medium, such as a floppy disk, a usb disk, a removable hard disk, a Read-only memory (ROM), a random-access memory (RAM), a magnetic disk or an optical disk of a computer, and includes instructions for enabling a computer device (which may be a personal computer, a server, or a network device) to execute the methods according to the embodiments of the present invention.
Claims (10)
1. An image display method is used for a liquid crystal display device, the liquid crystal display device comprises a liquid crystal display panel and a backlight module, the liquid crystal display panel comprises G pixels, the backlight module comprises a second green light source, the second green light source can emit G 'light, and the wavelength of the G' light is different from that of the G light;
the image display method is characterized by comprising the following steps:
converting the RGB signal of each frame of image to be displayed into an RGG' B signal;
performing frequency multiplication on the RGG' B signal to obtain a frequency multiplication signal of each frame of the image to be displayed;
screening a first frequency multiplication signal comprising R, G and B data from the frequency multiplication signal, and screening a second frequency multiplication signal comprising R, G' and B data from the frequency multiplication signal;
in the original frame time of the image to be displayed, controlling the liquid crystal display panel to sequentially display the image and controlling the backlight module to sequentially adjust the backlight brightness according to the first frequency doubling signal and the second frequency doubling signal so as to display a four-primary-color output image of the image to be displayed on the liquid crystal display device; and the G pixels in the liquid crystal display panel display images based on G 'data in the second frequency doubling signals, and the second green light source adjusts backlight brightness based on the G' data in the second frequency doubling signals.
2. The method according to claim 1, wherein controlling the lcd panel to sequentially display images according to the first and second multiplied signals within an original frame time of the image to be displayed comprises:
controlling R pixels in the liquid crystal display panel to display images based on R data in the first frequency doubling signal, controlling G pixels in the liquid crystal display panel to display images based on G data in the first frequency doubling signal, and controlling B pixels in the liquid crystal display panel to display images based on B data in the first frequency doubling signal within a first half frame time of an original one frame time of the images to be displayed;
and in a second half frame time of the original one-frame time of the image to be displayed, controlling an R pixel in the liquid crystal display panel to display the image based on R data in the first frequency doubling signal, controlling a G pixel in the liquid crystal display panel to display the image based on G' data in the first frequency doubling signal, and controlling a B pixel in the liquid crystal display panel to display the image based on B data in the first frequency doubling signal.
3. The method according to claim 1, wherein the controlling the backlight module to sequentially adjust the backlight brightness according to the first frequency doubling signal and the second frequency doubling signal in an original frame time of the image to be displayed comprises:
obtaining a first backlight control coefficient according to the first frequency doubling signal, and obtaining a second backlight control coefficient according to the second frequency doubling signal;
and controlling a backlight module to adjust the sequential backlight brightness according to the first backlight control coefficient and the second backlight control coefficient within the original frame time of the image to be displayed.
4. The method according to claim 3, wherein controlling a backlight module to sequentially adjust backlight brightness according to the first backlight control coefficient and the second backlight control coefficient during an original frame time of the image to be displayed comprises:
controlling the backlight module to sequentially adjust the brightness of the emitted R light, G light and B light according to the first backlight control coefficient within a first half frame time of the original frame time of the image to be displayed;
and controlling the backlight module to sequentially adjust the brightness of the emitted R light, G' light and B light according to the second backlight control coefficient in a second half frame time of the original frame time of the image to be displayed.
5. A liquid crystal display device, comprising:
the backlight module comprises a second green light source, the second green light source can emit G 'light, and the wavelength of the G' light is different from that of the G light;
the image processing unit is used for converting the RGB signals of each frame of image to be displayed into RGG' B signals;
the image frequency doubling unit is used for receiving the RGG 'B signal sent by the image processing unit, performing frequency doubling processing on the RGG' B signal and obtaining a frequency doubling signal of each frame of the image to be displayed; screening a first frequency multiplication signal comprising R, G and B data from the frequency multiplication signal, and screening a second frequency multiplication signal comprising R, G' and B data from the frequency multiplication signal;
the liquid crystal display panel comprises R pixels, G pixels and B pixels and is used for receiving the first frequency doubling signal and the second frequency doubling signal which are sequentially sent by the image frequency doubling unit and sequentially displaying images according to the first frequency doubling signal and the second frequency doubling signal within an original frame time of the image to be displayed, wherein the G pixels in the liquid crystal display panel display the images based on G' data in the second frequency doubling signal;
the backlight control unit is used for receiving the RGG 'B signal sent by the image processing unit, performing frequency multiplication processing on the RGG' B signal and obtaining a frequency multiplication signal of each frame of the image to be displayed; screening a first frequency multiplication signal comprising R, G and B data from the frequency multiplication signal, and screening a second frequency multiplication signal comprising R, G' and B data from the frequency multiplication signal; and controlling the backlight module to sequentially adjust the backlight brightness according to the first frequency doubling signal and the second frequency doubling signal.
6. The LCD device of claim 5, wherein the backlight module is further configured to obtain a first backlight control coefficient according to the first frequency doubling signal and obtain a second backlight control coefficient according to the second frequency doubling signal; and controlling a backlight module to sequentially adjust the backlight brightness according to the first backlight control coefficient and the second backlight control coefficient within the original frame time of the image to be displayed.
7. The LCD device of claim 6, wherein the backlight module is further configured to control the backlight module to sequentially adjust the brightness of the emitted R light, G light and B light according to the first backlight control coefficient in a first half frame time of an original one frame time of the image to be displayed; and controlling the backlight module to sequentially adjust the brightness of the emitted R light, G' light and B light in a second half frame time of the original frame time of the image to be displayed according to the second backlight control coefficient.
8. The liquid crystal display device according to any one of claims 5 to 7, wherein the backlight module satisfies any one of the following conditions:
the backlight module also comprises a white light source;
the backlight module also comprises a red light source, a blue light source and a green light source; or
The backlight module also comprises a purple light source and a green light source.
9. An image display apparatus comprising a memory, a processor and an image display program stored on the memory and executable on the processor, the image display program being configured to implement the steps of the image display method according to any one of claims 1 to 4.
10. A computer-readable storage medium, characterized in that an image display program is stored thereon, which when executed by a processor implements the steps of the image display method according to any one of claims 1 to 4.
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