CN107086029B - Color generation method and device based on liquid crystal display module and readable storage medium - Google Patents
Color generation method and device based on liquid crystal display module and readable storage medium Download PDFInfo
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- 239000003086 colorant Substances 0.000 abstract description 60
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- 230000000638 stimulation Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
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- 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
- G09G3/3406—Control of illumination source
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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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Abstract
The invention discloses a color generation method based on a liquid crystal display module, which comprises the following steps: sequentially acquiring gray values of pixel points according to a preset sequence; controlling the tricolor light source to sequentially emit different primary color light at a preset switching frequency, and controlling the thin film transistor switch corresponding to the display position of the pixel point to be turned on; generating a corresponding pulse signal according to the gray value of the current pixel point and the display position of the pixel point; and sending the pulse signals to a driving circuit, and loading corresponding pulse current to the corresponding thin film transistor by the driving circuit according to the pulse signals. The invention also provides a color generation device and a readable storage medium based on the liquid crystal display module. The liquid crystal display module sequentially displays different primary colors of the three-primary-color light source at the same point of the display screen within a certain time, so that the liquid crystal screen can generate the set color without a filter film, and the cost of the liquid crystal display module is reduced.
Description
Technical Field
The invention relates to the technical field of televisions, in particular to a color generation method and device based on a liquid crystal display module and a readable storage medium.
Background
With the improvement of living standard of people, the liquid crystal television without radiation and flicker has gradually become a standard household appliance of each family.
The liquid crystal display screen is an important component of the liquid crystal television and mainly comprises a backlight source, a polaroid, a liquid crystal screen, a glass substrate, a light filtering film and a transparent electrode. The backlight source adopted by the liquid crystal display screen is a white light backlight source, so that the liquid crystal display screen needs to filter the white light passing through the liquid crystal display screen by using a filter film to obtain a primary color light source, and a set color is displayed on the glass substrate. However, the manufacturing cost of the filter film is high, so that the cost of the liquid crystal display screen is high.
Disclosure of Invention
The invention mainly aims to provide a color generation method and device based on a liquid crystal display module and a readable storage medium, and aims to solve the problem that the cost of a liquid crystal display screen is high.
In order to achieve the above object, the color generation method based on the liquid crystal display module provided by the invention comprises the following steps:
sequentially acquiring the gray values of all pixel points to be displayed according to a preset sequence;
after the gray value of each pixel point is obtained, the three-primary-color light source is controlled to sequentially emit different primary-color light at a preset switching frequency, and a thin film transistor switch corresponding to the display position of the pixel point is controlled to be turned on;
generating a corresponding pulse signal according to the gray value of the current pixel point to be displayed and the display position of the pixel point;
and sending the pulse signal to a driving circuit so that the driving circuit can load corresponding pulse current to the corresponding thin film transistor according to the pulse signal.
Preferably, the step of controlling the thin film transistor switch to be turned on includes:
and controlling the starting frequency of the thin film transistor switch to be synchronous with the switching frequency of the primary light of the three-primary-color light source within preset time, and when the thin film transistor switch is started, the three-primary-color light source emits the primary light.
Preferably, the step of generating the corresponding pulse signal according to the gray value of the current pixel point to be displayed and the display position of the pixel point includes:
acquiring a voltage value between the liquid crystal screens according to the gray value of a pixel point to be displayed and the display position of the pixel point;
and generating corresponding pulse signals according to the voltage values between the liquid crystal screens, wherein the switching frequency of the scanning signals is synchronous with the switching frequency of the primary color light of the three-primary-color light source within preset time. Preferably, the color generation method based on the liquid crystal display module further includes:
when the light source of the three-primary-color light source fails, all thin film transistor switches in the liquid crystal display module are controlled to be turned on, and the three-primary-color light source is controlled to continuously emit set primary-color light.
In order to achieve the above object, the present invention further provides a color generation device based on a liquid crystal display module, including:
an obtaining program, configured to sequentially obtain gray values of the pixels to be displayed according to a preset sequence;
the control program is used for controlling the tricolor light sources to sequentially emit different primary color light at a preset switching frequency after the gray value of each pixel point is obtained, and controlling the thin film transistor switches corresponding to the display positions of the pixel points to be turned on;
a generating program, configured to generate a corresponding pulse signal according to a gray value of a current pixel point to be displayed and a display position of the pixel point;
and the sending program is used for sending the pulse signals to the driving circuit so that the driving circuit can load corresponding pulse current to the corresponding thin film transistor according to the pulse signals.
Preferably, the control program is further configured to control an on-frequency of the thin film transistor switch to be synchronized with a switching frequency of the primary light of the three primary color light sources within a preset time, and when the thin film transistor switch is turned on, the three primary color light sources emit the primary light.
Preferably, the acquiring program is further configured to acquire a voltage value between the liquid crystal screens according to the gray value of the pixel point to be displayed and the display position of the pixel point;
and the generating program is also used for generating corresponding pulse signals according to the voltage values between the liquid crystal screens, and the switching frequency of the scanning signals is synchronous with the switching frequency of the primary light of the three-primary-color light source within the preset time. Preferably, the control program is further configured to control all thin film transistor switches in the liquid crystal display module to be turned on and control the three primary color light sources to continuously emit the set primary color light when detecting that the light sources of the three primary color light sources are faulty.
In order to achieve the above object, the present invention further provides a readable storage medium, wherein the readable storage medium stores a color generation program based on a liquid crystal display module, and the color generation program based on a liquid crystal display module realizes the steps of the color generation method based on a liquid crystal display module when being executed by a processor.
According to the color generation method and device based on the liquid crystal display module and the readable storage medium, the liquid crystal display module sequentially displays different primary colors on the display positions corresponding to the pixel points by adopting the three-primary-color light source to generate the color, and controls the display time of the different primary colors on the display positions, so that the liquid crystal display module can generate the set color, the liquid crystal display module can generate the set color without adopting a filter film to filter the color, and the cost of the liquid crystal display module is reduced.
Drawings
FIG. 1 is an exploded view of a liquid crystal display module;
FIG. 2 is a front view of a first transparent electrode of the LCD module;
FIG. 3 is a schematic flow chart illustrating a color generation method based on a liquid crystal display module according to a first embodiment of the present invention;
FIG. 4 is a schematic flow chart illustrating a color generation method based on a liquid crystal display module according to a second embodiment of the present invention;
FIG. 5 is a schematic diagram of a program module of a color generation apparatus based on a liquid crystal display module 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
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The main solution of the embodiment of the invention is as follows: the color generation device of the liquid crystal display module sequentially acquires the gray values of all pixel points to be displayed according to a preset sequence; then, after the gray value of each pixel point is obtained, the three-primary-color light source is controlled to sequentially emit different primary-color light at a preset switching frequency, and a thin film transistor switch corresponding to the display position of the pixel point is controlled to be turned on; generating a corresponding pulse signal according to the gray value of the current pixel point to be displayed and the display position of the pixel point; and finally, sending the pulse signal to a driving circuit so that the driving circuit loads corresponding pulse current to the corresponding thin film transistor according to the pulse signal.
In the prior art, the liquid crystal display screen comprises the filter coating, and the manufacturing cost of the filter coating is higher, so that the manufacturing cost of the liquid crystal display screen is higher.
The invention provides a solution, the liquid crystal display module controls different primary colors of a three-primary-color light source to be sequentially displayed at the same point of the display screen within a certain time, so that the liquid crystal screen can generate a set color without a filter film, and the cost of the liquid crystal display module is reduced.
Referring to fig. 1 and 2, fig. 1 is an exploded view of a liquid crystal display module, and fig. 2 is a front view of a first transparent electrode 40.
The liquid crystal display module will be described in detail with reference to fig. 1, 2, and 3.
The liquid crystal display module is formed by sequentially connecting an N-direction (vertical direction) three-primary-color light source 10, a lower polarizer 20, a first glass substrate 30, a first transparent electrode 40, a liquid crystal 50, a second transparent electrode 60, a second glass substrate 70 and an upper polarizer 80.
A routing electrode 43 and a signal electrode 44 are disposed on one side of the first transparent electrode 40 close to the liquid crystal 50, the routing electrode 43 and the signal electrode 44 are interlaced with each other to form a plurality of closed areas, each closed area is disposed with a thin film transistor 41, the thin film transistor 41 can be communicated with the routing electrode 43 and the signal electrode 44 through a thin film transistor switch 42, and the routing electrode 43 and the signal electrode 44 form a part of a driving circuit.
When the tft switch 42 is turned on (the switch is in a closed state), a current is generated in the tft 41 corresponding to the tft switch 42, so that an induced electric field is generated between the closed region corresponding to the tft 41 and the second transparent electrode 60, and liquid crystal molecules in the induced electric field (the liquid crystal molecules are between the first transparent electrode 40 and the second transparent electrode 60) are aligned, so that a refraction angle of light in the liquid crystal molecules is changed, and a transmittance of the light passing through the liquid crystal molecules is further changed.
Referring to fig. 3, fig. 3 is a first embodiment of a color generation method based on a liquid crystal display module according to the present invention, and the color generation method based on a liquid crystal display module includes the following steps:
step S10, sequentially acquiring the gray values of the pixel points to be displayed according to a preset sequence;
the invention utilizes the time color mixing method to image the liquid crystal display module, the method utilizes the visual inertia of human eyes (for the light stimulation with medium brightness, the visual persistence time is about 0.05s to 0.2s, and the visual persistence time is the reaction time of the optic nerve of retina), as long as the liquid crystal display module sequentially appears the three primary colors on the same position of the same surface of the display screen, the human eyes can feel that the three primary colors are simultaneously appeared, and the color obtained by adding the three primary colors is captured.
The display screen (second glass substrate) of the liquid crystal display module can be divided into a plurality of display areas, each display area corresponds to one thin film transistor, when the display screen needs to display a picture, the liquid crystal display module divides the display changing surface into corresponding pixel points according to the number of the display areas of the display screen and the color generation method of the liquid crystal display module, in the implementation, the color generation method of the liquid crystal display module adopts a time color changing method, and each pixel point corresponds to one display area of the display screen, namely each pixel point corresponds to a corresponding display position. Each pixel point represents a color, each color consists of three primary colors of red, green and yellow, each primary color has a corresponding gray value, the gray value of the primary color is determined by the transmittance of the primary color through liquid crystal molecules, namely, the color displayed by each pixel point is determined according to the picture required to be displayed by the liquid crystal display module, and the primary colors consisting of the colors required to be displayed by the pixel points have corresponding gray values, which means that the liquid crystal display module needs to adjust the transmittance of the primary color light penetrating through the liquid crystal molecules for many times, and the liquid crystal display module needs to sequence the gray value adjustment of the primary colors in order to avoid disordered display pictures of a display screen. Based on this, the display positions corresponding to the pixel points on the display screen can be sequenced, so that the display screen can continuously display the pictures, and after the color of one display position is generated, the color of the next sequential display position is generated immediately, so that the pictures can be regularly and continuously displayed. The preset sequence in this embodiment refers to a color generation sequence of the display positions corresponding to the pixel points.
When a display screen needs to display a picture, the liquid crystal display module divides the display picture into corresponding areas according to the display area of the display screen, each area of the picture is a pixel point, the liquid crystal display module obtains corresponding colors according to the pixel points, then analyzes the primary color composition of the colors according to the colors, and determines the gray value of each primary color in the colors.
Step S20, after the gray value of each pixel point is obtained, controlling a tricolor light source to emit different primary color light at a preset switching frequency, and controlling a thin film transistor switch corresponding to the display position of the pixel point to be turned on;
the three primary color light sources refer to primary color light of red, green and yellow light sources, the three primary color light sources can emit only single primary color light in sequence and each time, and the three primary color light sources can continuously switch the emitted primary color light, for example, the three primary color light sources have red, green and blue primary color light.
The color generation method adopted by the liquid crystal display module in this embodiment is a time color mixing method, and then the time length for switching one round (three primary colors of red, green, and blue) of primary color light of the three-primary color light source should be less than or equal to the time of the human eye residual image, but in order to make the color generated at the display position corresponding to the pixel point have continuity, the time length for switching one round of primary color light of the three-primary color light source should be much shorter than the human eye residual image, in this embodiment, the preset switching frequency of the primary colors of the three-primary color light source is 180Hz, the time length for switching one round of primary color light of the three-primary color light source is about 0.0112S, and is much shorter than the human eye residual image time length by 0.05S-0.2S, and certainly, the primary color switching frequency of the.
In addition, since each display position of the display screen corresponds to one thin film transistor, and colors of the display positions are sequentially generated, when color generation is performed at a certain display position, the thin film transistor switch corresponding to the display position is turned on, and the other thin film transistor switches are turned off (the switches are in an off state).
The method is characterized in that the method comprises the steps of generating a primary color, adjusting the gray value of each primary color according to the gray value of the primary color, and adjusting the gray value of each primary color according to the gray value of the primary color.
Step S30, generating a corresponding pulse signal according to the gray value of the current pixel point to be displayed and the display position of the pixel point;
the liquid crystal of the liquid crystal display module refers to a liquid crystal molecular layer, the liquid crystal is in a material state between a liquid state and a crystalline state and is a rod-shaped molecule, two ends of the liquid crystal molecule have polarities, different angles can be twisted under different voltages, and the liquid crystal molecule has the function of refracting light, so that the liquid crystal molecular layer is twisted under different electric fields of different voltages by different angles to determine the light transmittance, and the liquid crystal molecular layer adjusts the primary color gray value of the display screen by adjusting the transmittance of primary color light.
After the liquid crystal display module acquires each gray value of the primary colors of the colors in the pixel points, the liquid crystal display module generates corresponding pulse signals according to the gray values of the primary colors, each pulse signal can correspondingly adjust the opening of a thin film transistor switch, so that the current in the thin film transistor is a set current value, liquid crystal molecules are in an induction electric field of set voltage, the liquid crystal molecules are further twisted by corresponding angles to determine the transmissivity of the primary color light, and finally the primary color light penetrating through a liquid crystal molecular layer is a preset gray value synthesized color.
Step S40, sending the pulse signal to a driving circuit for the driving circuit to load a corresponding pulse current thin film transistor according to the pulse signal;
the driving circuit is provided with a signal electrode and a wiring electrode, the wiring electrode is a closed loop, and when the liquid crystal display module works, current flows through the wiring electrode. When the driving circuit receives the pulse signal, the liquid crystal display module can turn on the thin film transistor switch corresponding to the pulse signal, so that the thin film transistor corresponding to the thin film transistor switch forms a small closed loop, the current of the wiring electrode can flow into the thin film transistor through the thin film transistor switch, the thin film transistor switch can control the opening of the switch according to the pulse signal so as to control the current flowing into the thin film transistor, the voltage value of an induced electric field where liquid crystal molecules are located is a set voltage value, and the purpose of controlling the adjustment of the gray value of the primary colors is achieved.
The color generation method of the existing liquid crystal display module adopts a spatial color mixing method, and utilizes the characteristic of poor resolution capability of human eye spatial details during the spatial color mixing method to enable three primary colors of light to be sufficiently close to corresponding positions of the same plane, so long as three primary colors of light spots are sufficiently small and sufficiently close to each other, human eyes can feel the color of the mixed three primary colors of light after leaving a display screen for a certain distance, therefore, the liquid crystal display module needs white light with the three primary colors as a backlight source, and in order to remove light of the white light except the three primary colors, the liquid crystal display module needs to use a filter film to filter the white light, so the filter film is an indispensable important component in the liquid crystal display module which generates the color by adopting the spatial color mixing method, and the cost of the filter film is high, thereby improving the overall cost of the liquid crystal.
It should be noted that, in this embodiment, the color generation method of the liquid crystal display module adopts a time color mixing method, that is, the liquid crystal display module sequentially displays three different primary colors on one pixel point to generate a color, which can be understood as that one pixel point of the display screen of the liquid crystal display module can generate one color, and different from the color generation method of the liquid crystal display module adopting a space color mixing method, three pixel points close to each other can generate one color, and under the condition that the number of the pixel points of the display screen of the liquid crystal display module is the same, the resolution of the display screen of the liquid crystal display module adopting the time color mixing method is three times that of the display screen of the liquid crystal display module adopting the space color mixing method.
In the technical scheme provided by this embodiment, the liquid crystal display module adopts the three primary colors light source to sequentially display different primary colors at the display positions corresponding to the pixel points so as to generate colors, and controls the display time of the different primary colors at the display positions, so that the liquid crystal display module can generate the set colors, and the liquid crystal display module can generate the set colors without adopting a filter film to filter the colors, thereby reducing the cost of the liquid crystal display module.
Referring to fig. 4, fig. 4 is a second embodiment of the color generation method based on the liquid crystal display module according to the present invention, and based on the above embodiment, after step S40, the method further includes:
step S50, when detecting that the light source of the three primary color light source is in failure, controlling all the thin film transistor switches in the liquid crystal display module to be turned on, and controlling the three primary color light source to continuously emit the set primary color light;
after the corresponding color is generated at the display position corresponding to the pixel point, the liquid crystal display module can detect whether the quantity of the primary color light of the color is consistent with the quantity of the preset color primary color light. When a problem occurs in a light source in the three-primary-color light source, the color generated at the display position corresponding to the pixel point is inconsistent with the pixel unit of the set color, so that the liquid crystal display module judges that the problem occurs in the light source of the three-primary-color light source, at the moment, the liquid crystal display module controls the on and off of all the thin film transistors, controls the three-primary-color light source to stop switching the light source, and continuously emits the set primary color light, wherein the set primary color light can be red light (under the condition that the problem does not occur in the red light source of the three-primary-color light source), so as to remind a user of maintaining the liquid.
In the technical scheme provided by this embodiment, when a problem occurs in the light source of the three-primary-color light source, the three-primary-color light source is controlled to continuously emit the set primary color light by controlling the switches of all the thin film transistors to be turned on, so that the full screen of the liquid crystal screen displays the color of the set primary color light to remind a user to maintain the liquid crystal display module.
Referring to fig. 5, fig. 5 is a schematic view of a program module of a color generating device based on a liquid crystal display module according to the present invention, wherein the color generating device based on a liquid crystal display module comprises: an acquisition program 100, a control program 200, a generation program 300, and a transmission program 400; the acquiring program 100 is configured to sequentially acquire the gray values of the pixels to be displayed according to a preset sequence;
the acquiring program 100 sequentially acquires the gray values of the pixels to be displayed according to a preset sequence;
the invention utilizes the time color mixing method to image the liquid crystal display module, the method utilizes the visual inertia of human eyes (for the light stimulation with medium brightness, the visual persistence time is about 0.05s to 0.2s, and the visual persistence time is the reaction time of the optic nerve of retina), as long as the liquid crystal display module sequentially appears the three primary colors on the same position of the same surface of the display screen, the human eyes can feel that the three primary colors are simultaneously appeared, and the color obtained by adding the three primary colors is captured.
The display screen (second glass substrate) of the liquid crystal display module can be divided into a plurality of display areas, each display area corresponds to one thin film transistor, when the display screen needs to display a picture, the liquid crystal display module divides the display changing surface into corresponding pixel points according to the number of the display areas of the display screen and the color generation method of the liquid crystal display module, in the implementation, the color generation method of the liquid crystal display module adopts a time color changing method, and each pixel point corresponds to one display area of the display screen, namely each pixel point corresponds to a corresponding display position. Each pixel point represents a color, each color consists of three primary colors of red, green and yellow, each primary color has a corresponding gray value, the gray value of the primary color is determined by the transmittance of the primary color through liquid crystal molecules, namely, the color displayed by each pixel point is determined according to the picture required to be displayed by the liquid crystal display module, and the primary colors consisting of the colors required to be displayed by the pixel points have corresponding gray values, which means that the liquid crystal display module needs to adjust the transmittance of the primary color light penetrating through the liquid crystal molecules for many times, and the liquid crystal display module needs to sequence the gray value adjustment of the primary colors in order to avoid disordered display pictures of a display screen. Based on this, the display positions corresponding to the pixel points on the display screen can be sequenced, so that the display screen can continuously display the pictures, and after the color of one display position is generated, the color of the next sequential display position is generated immediately, so that the pictures can be regularly and continuously displayed. The preset sequence in this embodiment refers to a color generation sequence of the display positions corresponding to the pixel points.
When a display screen needs to display a picture, the liquid crystal display module divides the display picture into corresponding areas according to the display area of the display screen, each area of the picture is a pixel point, the liquid crystal display module obtains corresponding colors according to the pixel points, then analyzes the primary color composition of the colors according to the colors, and determines the gray value of each primary color in the colors.
The control program 200 is configured to control the three-primary-color light source to emit different primary colors at a preset switching frequency after the gray value of each pixel point is obtained, and control the thin film transistor switch corresponding to the display position of the pixel point to be turned on;
the three primary color light sources refer to primary color light of red, green and yellow light sources, the three primary color light sources can emit only single primary color light in sequence and each time, and the three primary color light sources can continuously switch the emitted primary color light, for example, the three primary color light sources have red, green and blue primary color light.
The color generation method adopted by the liquid crystal display module in this embodiment is a time color mixing method, and then the time length for switching one round (three primary colors of red, green, and blue) of primary color light of the three-primary color light source should be less than or equal to the time of the human eye residual image, but in order to make the color generated at the display position corresponding to the pixel point have continuity, the time length for switching one round of primary color light of the three-primary color light source should be much shorter than the human eye residual image, in this embodiment, the preset switching frequency of the primary colors of the three-primary color light source is 180Hz, the time length for switching one round of primary color light of the three-primary color light source is about 0.0112S, and is much shorter than the human eye residual image time length by 0.05S-0.2S, and certainly, the primary color switching frequency of the.
In addition, since each display position of the display screen corresponds to one thin film transistor, and colors of the display positions are sequentially generated, when color generation is performed at a certain display position, the thin film transistor switch corresponding to the display position is turned on, and the other thin film transistor switches are turned off (the switches are in an off state).
The method is characterized in that the method comprises the steps of generating a primary color, adjusting the gray value of each primary color according to the gray value of the primary color, and adjusting the gray value of each primary color according to the gray value of the primary color.
The control program 200 is further configured to control all thin film transistor switches in the liquid crystal display module to be turned on and control the three primary color light sources to continuously emit set primary color light when detecting that the light sources of the three primary color light sources are failed;
after the corresponding color is generated at the display position corresponding to the pixel point, the liquid crystal display module can detect whether the quantity of the primary color light of the color is consistent with the quantity of the preset color primary color light. When a problem occurs in a light source in the three-primary-color light source, the color generated at the display position corresponding to the pixel point is inconsistent with the pixel unit of the set color, so that the liquid crystal display module judges that the problem occurs in the light source of the three-primary-color light source, at the moment, the liquid crystal display module controls the on and off of all the thin film transistors, controls the three-primary-color light source to stop switching the light source, and continuously emits the set primary color light, wherein the set primary color light can be red light (under the condition that the problem does not occur in the red light source of the three-primary-color light source), so as to remind a user of maintaining the liquid.
The generating program 300 is configured to generate a corresponding pulse signal according to a gray value of a current pixel point to be displayed;
the liquid crystal of the liquid crystal display module refers to a liquid crystal molecular layer, the liquid crystal is in a material state between a liquid state and a crystalline state and is a rod-shaped molecule, two ends of the liquid crystal molecule have polarities, different angles can be twisted under different voltages, and the liquid crystal molecule has the function of refracting light, so that the liquid crystal molecular layer is twisted under different electric fields of different voltages by different angles to determine the light transmittance, and the liquid crystal molecular layer adjusts the primary color gray value of the display screen by adjusting the transmittance of primary color light.
After the liquid crystal display module acquires each gray value of the primary colors of the colors in the pixel points, the liquid crystal display module generates corresponding pulse signals according to the gray values of the primary colors, each pulse signal can correspondingly adjust the opening of a thin film transistor switch, so that the current in the thin film transistor is a set current value, liquid crystal molecules are in an induction electric field of set voltage, the liquid crystal molecules are further twisted by corresponding angles to determine the transmissivity of the primary color light, and finally the primary color light penetrating through a liquid crystal molecular layer is a preset gray value synthesized color.
The sending program 400 is configured to send the pulse signal to the driving circuit, so that the driving circuit loads the corresponding pulse current thin film transistor according to the pulse signal;
the driving circuit is provided with a signal electrode and a wiring electrode, the wiring electrode is a closed loop, and when the liquid crystal display module works, current flows through the wiring electrode. When the driving circuit receives the pulse signal, the liquid crystal display module can turn on the thin film transistor switch corresponding to the pulse signal, so that the thin film transistor corresponding to the thin film transistor switch forms a small closed loop, the current of the wiring electrode can flow into the thin film transistor through the thin film transistor switch, the thin film transistor switch can control the opening of the switch according to the pulse signal so as to control the current flowing into the thin film transistor, the voltage value of an induced electric field where liquid crystal molecules are located is a set voltage value, and the purpose of controlling the adjustment of the gray value of the primary colors is achieved.
The color generation method of the existing liquid crystal display module adopts a spatial color mixing method, and utilizes the characteristic of poor resolution capability of human eye spatial details during the spatial color mixing method to enable three primary colors of light to be sufficiently close to corresponding positions of the same plane, so long as three primary colors of light spots are sufficiently small and sufficiently close to each other, human eyes can feel the color of the mixed three primary colors of light after leaving a display screen for a certain distance, therefore, the liquid crystal display module needs white light with the three primary colors as a backlight source, and in order to remove light of the white light except the three primary colors, the liquid crystal display module needs to use a filter film to filter the white light, so the filter film is an indispensable important component in the liquid crystal display module which generates the color by adopting the spatial color mixing method, and the cost of the filter film is high, thereby improving the overall cost of the liquid crystal.
It should be noted that, in this embodiment, the color generation method of the liquid crystal display module adopts a time color mixing method, that is, the liquid crystal display module sequentially displays three different primary colors on one pixel point to generate a color, which can be understood as that one pixel point of the display screen of the liquid crystal display module can generate one color, and different from the color generation method of the liquid crystal display module adopting a space color mixing method, three pixel points close to each other can generate one color, and under the condition that the number of the pixel points of the display screen of the liquid crystal display module is the same, the resolution of the display screen of the liquid crystal display module adopting the time color mixing method is three times that of the display screen of the liquid crystal display module adopting the space color mixing method.
The invention also provides a readable storage medium, wherein the readable storage medium stores a color generation program based on the liquid crystal display module, and the color generation program based on the liquid crystal display module realizes the steps of the color generation method based on the liquid crystal display module according to the above embodiment when being executed by a processor.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) as described above and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (9)
1. A color generation method based on a liquid crystal display module is characterized by comprising the following steps:
sequentially acquiring the gray values of all pixel points to be displayed according to a preset sequence;
after the gray value of each pixel point is obtained, the three-primary-color light source is controlled to sequentially emit different primary-color light at a preset switching frequency, and a thin film transistor switch corresponding to the display position of the pixel point is controlled to be turned on;
generating a corresponding pulse signal according to the gray value of the current pixel point to be displayed and the display position of the pixel point;
and sending the pulse signal to a driving circuit so that the driving circuit can load corresponding pulse current to the corresponding thin film transistor according to the pulse signal.
2. The color generation method based on the liquid crystal display module as claimed in claim 1, wherein the step of controlling the on-off of the tft switch corresponding to the display position of the pixel point comprises:
and controlling the starting frequency of a thin film transistor switch corresponding to the display position of the pixel point to be synchronous with the switching frequency of the primary light of the three-primary-color light source within preset time, wherein the three-primary-color light source emits the primary light when the thin film transistor switch is started.
3. The color generation method based on the liquid crystal display module according to claim 1, wherein the step of generating the corresponding pulse signal according to the gray value of the pixel point to be displayed and the display position of the pixel point comprises:
acquiring a voltage value between the liquid crystal screens according to the gray value of a pixel point to be displayed and the display position of the pixel point;
and generating corresponding pulse signals according to the voltage values between the liquid crystal screens, wherein the switching frequency of the pulse signals is synchronous with the switching frequency of the primary color light of the three-primary-color light source within preset time.
4. The color generation method based on liquid crystal display module of any of claims 1 to 3, wherein the color generation method based on liquid crystal display module further comprises:
when the light source of the three-primary-color light source fails, all thin film transistor switches in the liquid crystal display module are controlled to be turned on, and the three-primary-color light source is controlled to continuously emit set primary-color light.
5. The color generation device based on the liquid crystal display module is characterized by comprising:
an obtaining program, configured to sequentially obtain gray values of the pixels to be displayed according to a preset sequence;
the control program is used for controlling the tricolor light sources to sequentially emit different primary color light at a preset switching frequency after the gray value of each pixel point is obtained, and controlling the thin film transistor switches corresponding to the display positions of the pixel points to be turned on;
a generating program, configured to generate a corresponding pulse signal according to a gray value of a current pixel point to be displayed and a display position of the pixel point;
and the sending program is used for sending the pulse signals to the driving circuit so that the driving circuit can load corresponding pulse current to the corresponding thin film transistor according to the pulse signals.
6. The color generating apparatus based on liquid crystal display module according to claim 5, wherein the control program is further configured to control the on-frequency of the thin film transistor switch to be synchronized with the switching frequency of the primary light of the three primary color light sources within a predetermined time, and the three primary color light sources emit the primary light when the thin film transistor switch is turned on.
7. The color generation apparatus based on liquid crystal display module according to claim 5, wherein the acquiring program is further configured to acquire a voltage value between the liquid crystal panels according to the gray value of the pixel to be displayed and the display position of the pixel;
and the generating program is also used for generating corresponding pulse signals according to the voltage values between the liquid crystal screens, and the switching frequency of the pulse signals is synchronous with the switching frequency of the primary light of the three-primary-color light source within the preset time.
8. The color generating apparatus based on LCD module as claimed in claim 5, wherein the control program is further configured to control all the TFT switches in the LCD module to be turned on and the three primary color light sources to continuously emit the set primary color light when detecting that the light sources of the three primary color light sources are failed.
9. A readable storage medium, wherein the readable storage medium stores thereon a color generation program based on a liquid crystal display module, and the color generation program based on a liquid crystal display module realizes the steps of the color generation method based on a liquid crystal display module according to any one of claims 1 to 4 when being executed by a processor.
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| CN201710441143.XA CN107086029B (en) | 2017-06-12 | 2017-06-12 | Color generation method and device based on liquid crystal display module and readable storage medium |
| PCT/CN2017/110371 WO2018227865A1 (en) | 2017-06-12 | 2017-11-10 | Liquid crystal display module, and colour generation method and apparatus therefor, and readable storage medium |
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| CN107086029B (en) * | 2017-06-12 | 2020-07-14 | 深圳Tcl新技术有限公司 | Color generation method and device based on liquid crystal display module and readable storage medium |
| CN110488534A (en) * | 2019-08-21 | 2019-11-22 | 惠州市慧联智显工业系统有限公司 | A kind of dedicated BLU of time mixing color |
| CN113035140A (en) * | 2021-03-19 | 2021-06-25 | 维沃移动通信有限公司 | Display screen driving method and device, electronic equipment and storage medium |
| CN113035141A (en) * | 2021-03-19 | 2021-06-25 | 维沃移动通信有限公司 | Display screen, display screen driving method and device, electronic equipment and storage medium |
| CN112946975A (en) * | 2021-03-29 | 2021-06-11 | 峰米(北京)科技有限公司 | Single-chip LCD projection structure, projector and projection method |
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