CN108492786B - Display device and backlight control method - Google Patents
Display device and backlight control method Download PDFInfo
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- CN108492786B CN108492786B CN201810265559.5A CN201810265559A CN108492786B CN 108492786 B CN108492786 B CN 108492786B CN 201810265559 A CN201810265559 A CN 201810265559A CN 108492786 B CN108492786 B CN 108492786B
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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
- G09G3/3406—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
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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
- G09G3/3611—Control of matrices with row and column drivers
- G09G3/3648—Control of matrices with row and column drivers using an active matrix
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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
- G09G2310/00—Command of the display device
- G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
- G09G2310/0237—Switching ON and OFF the backlight within one frame
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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
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0257—Reduction of after-image effects
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Liquid Crystal Display Device Control (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The application provides a display device and a backlight control method. The display device comprises a display panel, a source electrode driving unit, a grid electrode driving unit, a backlight module and a time sequence module, wherein the time sequence module controls the picture of the display panel through the source electrode driving unit and the grid electrode driving unit, and turns on the backlight module in a first frame scanning period of two continuous frames and turns off the backlight module in a second frame scanning period. The time point and the time length of light provided by the backlight module are determined by controlling the on-off time of the backlight module, so that the smear image of a display picture can be effectively reduced.
Description
Technical Field
The present disclosure relates to a driving technique of a display device, and more particularly, to a display device and a backlight control method.
Background
The display driving method includes: the system motherboard transmits color (e.g., R/G/B) compression signals, control signals and power to the control board. The signal is processed by a Timing Controller (TCON) and then transmitted to a Source Driver (Source Driver) and a Gate Driver (Gate Driver). Necessary data and power are transmitted to the display area through related integrated circuits or chips, so that the display can obtain power and signals required by the display.
In the process of displaying the picture, a backlight module (Back Light) provides a Light source for the display panel, a grid driving circuit provides a grid opening control signal to be responsible for opening the active switches of the display panel line by line, and a source driving circuit is responsible for providing display data and a source driving signal to charge the pixel unit so as to drive the liquid crystal molecules corresponding to the pixel unit to rotate. The light provided by the backlight module can penetrate through the liquid crystal display panel to achieve the purpose of display. However, the liquid crystal molecules corresponding to the pixel unit require time to rotate, and the larger the gray scale parameter transition is, the more time is required, which generally requires several milliseconds. Thus, when a dynamic picture is displayed, a problem of smear is easily caused.
Disclosure of Invention
In order to solve the above-mentioned problems, an objective of the present invention is to provide a display device and a backlight control method, which can reduce the time for displaying the smear in the rotation process of the liquid crystal molecules by controlling the on/off timing of the backlight module to determine the time point and the time length of the backlight module providing light.
The purpose of the application and the technical problem to be solved are realized by adopting the following technical scheme. According to a display device proposed by the present application, the display device includes: a display panel, comprising: the display device comprises a first substrate and a second substrate, wherein the first substrate comprises a display area and a wiring area at the periphery of the display area, a plurality of gate lines, a plurality of source lines, a plurality of active switches and a plurality of pixel units are arranged in the display area, and the pixel units are electrically coupled to intersections of the gate lines and the source lines through the active switches; a second substrate disposed opposite to the first substrate; the liquid crystal layer is arranged between the first substrate and the second substrate; a source driving unit connected to the plurality of source lines; a gate driving unit connected to the plurality of gate lines; the backlight module provides a light source for the display panel; the time sequence module is connected with the backlight module, the source electrode driving unit and the grid electrode driving unit; the time sequence module starts the backlight module in the scanning period of the first frame, and turns off the backlight module in the scanning period of the second frame; the timing module starts the backlight module when judging that the gate driving unit carries out scanning operation of a first number of the gate lines in a scanning period of the first frame; the timing module is used for closing the backlight module when the gate driving unit is judged to carry out scanning operation on a second number of the gate lines in the scanning period of the second frame; the first number is the same as or different from the second number.
The technical problem solved by the application can be further realized by adopting the following technical measures.
In an embodiment of the application, the timing module turns on the backlight module when determining that the gate driving unit performs the scanning operation of the plurality of gate lines in a first number in the scanning period of the first frame.
In an embodiment of the application, the timing module turns off the backlight module when the gate driving unit determines that the second number of scanning operations of the plurality of gate lines are performed by the gate driving unit in the scanning period of the second frame.
In an embodiment of the present application, the first number is the same as or different from the second number.
In an embodiment of the present application, the first number is 1/3, 1/2 or 2/3 of the total number of the plurality of gate lines, and the second number is 1/3, 1/2 or 2/3 of the total number of the plurality of gate lines.
In an embodiment of the application, the timing module pre-determines that the gray scale parameters corresponding to the plurality of pixel units are changed from low gray scale values to high gray scale values in the scanning period of the first frame, and when the gray scale parameters are changed from high gray scale values to low gray scale values in the scanning period of the second frame, the backlight module is turned on in the first frame period, and the backlight module is turned off in the second frame period.
In an embodiment of the application, the timing module pre-determines that the gray scale parameters corresponding to the plurality of pixel units are changed from high gray scale values to low gray scale values in the scanning period of the first frame, and when the gray scale parameters are changed from low gray scale values to high gray scale values in the scanning period of the second frame, the backlight module is turned on in the first frame period, and the backlight module is turned off in the second frame period.
Another objective of the present application is a backlight control method of a display device, comprising: providing scanning signals to the gate lines one by one through a gate driving unit; starting the backlight module in a scanning period of a first frame through a time sequence module; closing the backlight module in a scanning period of a second frame through the time sequence module; the timing module turns on the backlight module when judging that the gate driving unit performs the scanning operation of the gate lines in a first quantity in the scanning period of the first frame, and turns off the backlight module when judging that the gate driving unit performs the scanning operation of the gate lines in a second quantity in the scanning period of the second frame.
The technical problem solved by the application can be further realized by adopting the following technical measures.
In an embodiment of the application, the timing module turns on the backlight module when determining that the gate driving unit performs the scanning operation of the gate lines of the first number in the scanning period of the first frame, and turns off the backlight module when determining that the gate driving unit performs the scanning operation of the gate lines of the second number in the scanning period of the second frame.
Yet another object of the present application is a display device, comprising: a display panel, comprising: the display device comprises a first substrate and a second substrate, wherein the first substrate comprises a display area and a wiring area at the periphery of the display area, a plurality of gate lines, a plurality of source lines, a plurality of active switches and a plurality of pixel units are arranged in the display area, and the pixel units are electrically coupled to intersections of the gate lines and the source lines through the active switches; a second substrate disposed opposite to the first substrate; the liquid crystal layer is arranged between the first substrate and the second substrate; a source driving unit connected to the plurality of source lines; a gate driving unit connected to the plurality of gate lines; the backlight module provides a light source for the display panel; the time sequence module is connected with the backlight module, the source electrode driving unit and the grid electrode driving unit; the two frames are a frame group, each frame group comprises a first frame and a second frame, the timing module starts the backlight module when judging that the gate driving unit carries out scanning operation of a first number of the gate lines in a scanning period of the first frame, the timing module closes the backlight module when judging that the gate driving unit carries out scanning operation of a second number of the gate lines in a scanning period of the second frame, and the first number and the second number are the same or different; in the period time of the frame group, the time length of the backlight module for opening and the time length of the backlight module for closing are 1:1, 1:2 or 1: 3.
The method and the device can effectively reduce the smear phenomenon of the display picture by controlling the on-off time and the time of the backlight module. Secondly, the method can maintain the original process requirement and the product cost without greatly changing the premise of the existing production flow. Thirdly, the present application is suitable for the manufacturing process of various display devices because the existing production flow does not need to be changed greatly. Fourthly, the display panel display method and the display panel display device can be suitable for various types of display panels, and the applicability is relatively high.
Drawings
FIG. 1a is a schematic diagram of an exemplary display device architecture.
FIG. 1b is a schematic diagram of an exemplary pixel cell configuration.
FIG. 1c is a waveform diagram of gate scan signals of an exemplary display device.
Fig. 2a is a schematic diagram illustrating an architecture of a display device according to an embodiment of a method of the present application.
FIG. 2b is a cross-sectional view of a display panel according to an embodiment of the present invention.
FIG. 2c is a schematic diagram illustrating a waveform of a gate scan signal of a display device according to an embodiment of the present invention.
FIG. 3 is a flowchart illustrating a backlight control method of a display device according to an embodiment of the present disclosure.
Detailed Description
The following description of the embodiments refers to the accompanying drawings for illustrating the specific embodiments in which the invention may be practiced. In the present invention, directional terms such as "up", "down", "front", "back", "left", "right", "inner", "outer", "side", etc. refer to directions of the attached drawings. Accordingly, the directional terms used are used for explanation and understanding of the present invention, and are not used for limiting the present invention.
The drawings and description are to be regarded as illustrative in nature, and not as restrictive. In the drawings, elements having similar structures are denoted by the same reference numerals. In addition, the size and thickness of each component shown in the drawings are arbitrarily illustrated for understanding and ease of description, but the present invention is not limited thereto.
In the drawings, the thicknesses of layers, films, panels, regions, and the like are exaggerated for clarity, and the arrangement range of circuits is also exaggerated. In the drawings, the thickness of some layers and regions are exaggerated for understanding and convenience of description, and the range of arrangement of circuits is also exaggerated. It will be understood that when an element such as a layer, film, region, circuit, or substrate is referred to as being "on" another element, it can be directly on the other element or intervening elements may also be present.
In addition, in the description, unless explicitly described to the contrary, the word "comprise" will be understood to mean that the recited components are included, but not to exclude any other components. Further, in the specification, "on.
To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description of the display panel and the display device using the same according to the present invention will be provided with reference to the accompanying drawings and preferred embodiments.
FIG. 1a is a schematic diagram of an exemplary display device architecture. Referring to fig. 1a, a display device 200 includes: a control board 100, the control board 100 including a Timing Controller (TCON) 101; a printed circuit board 103 connected to the control board 100 through a Flexible Flat Cable (FFC) 102; the source driving unit 104 and the gate driving unit 105 are disposed in the wiring region 109 and connected to source lines and gate lines in the display region 106, respectively. In some embodiments, the gate driving unit 105 and the source driving unit 104 include, but are not limited to, a flip-chip.
In some embodiments, the display device may also be of a Gate Array driving (Gate On Array) type, and the Gate driving circuit 105 may be divided into a level shifter (boost module) disposed On the control board and a shift register (shift register) disposed On the active Array substrate.
In some embodiments, the driving method of the display device includes: the system board provides color (e.g., R/G/B) compression signals, control signals and power to the control board 100. After the timing module 101 on the control board 100 processes these signals, the signals and the power processed by the driving circuit are transmitted to the source driving circuit 104 and the gate driving circuit 105 of the printed circuit board 103 through, for example, a Flexible Flat Cable (FFC) 102, and the source driving circuit 104 and the gate driving circuit 105 transmit necessary data and power to the display area 106 through the gate line 105a and the source line 104a, so that the display can obtain the power and signals required for displaying the image. The gate line 105a and the source line 104a shown in fig. 1 are merely schematic illustrations, and the wiring method is not limited thereto.
Fig. 1b is a schematic diagram of an exemplary pixel unit configuration, and fig. 1c is a schematic diagram of waveforms of gate scan signals of an exemplary display device. Please refer to fig. 1a for better understanding. In the process of displaying a picture, the backlight module (Back Light) provides a Light source for the display panel, and when the gate driving unit 105 obtains the Start Vertical (STV) provided by the timing control unit 101, the gate driving unit 105 provides the scan signals to the gate lines (G1-Gn) line by line, and provides the scan signals to a row of gate lines every scan period. The active switches T connected to the source lines 104a of the display panel are turned on line by line, and the source driving unit 104 provides data to the pixel units P through the source lines to charge the pixel units P, so as to drive the liquid crystal molecules corresponding to the pixel units P to rotate. The pixel unit P includes a storage capacitor (Cst) formed by a pixel electrode and a common voltage line (VCom), and a liquid crystal capacitor (Clc) formed between a color film common electrode (CFcom) and the pixel electrode.
However, the liquid crystal molecules corresponding to the pixel unit P require time to rotate, and generally several milliseconds. Particularly, when the gray scale parameter of the gray scale data of each frame is changed from high gray scale to low gray scale or from low gray scale to high gray scale, the more time is required for the liquid crystal molecules to rotate. As shown in fig. 1a and 1b, the pixel unit Pn and the pixel unit Pm are respectively located in the upper half and the lower half of the display area 106, and if a liquid crystal molecule rotation process is required to achieve a desired brightness, a liquid crystal molecule corresponding to the pixel unit Pn and a liquid crystal molecule corresponding to the pixel unit Pm are generated with a difference in rotation time, so that a smear is easily formed when displaying a dynamic image.
FIG. 2a is a schematic diagram illustrating an architecture of a display device according to an embodiment of a method of the present application; FIG. 2b is a cross-sectional view of a display panel according to an embodiment of the present invention. For the convenience of understanding, please refer to fig. 1a and fig. 1b for the conventional display device assembly. Referring to fig. 2a, in an embodiment of the present application, a display device 200 includes: a display panel 201, comprising: a first substrate 210 including a display region 106 and a wiring region 109 at a periphery thereof, a plurality of gate lines 105a, a plurality of source lines 104a, a plurality of active switches T and a plurality of pixel units P disposed in the display region 106, the plurality of pixel units P being electrically coupled to intersections of the plurality of gate lines 105a and the plurality of source lines 104a through the plurality of active switches T; a second substrate 220 disposed opposite to the first substrate 210; a liquid crystal layer 230 disposed between the first substrate 210 and the second substrate 220; a source driving unit 104 connected to the plurality of source lines 104 a; a gate driving unit 105 connected to the plurality of gate lines 105 a; a backlight module 300 providing a light source to the display panel 201; a timing module 101 connected to the backlight module 300, the source driving unit 104 and the gate driving unit 105; the two frames are a frame group, each frame group includes a first frame and a second frame, the timing module 101 turns on the backlight module 300 in a scanning period of the first frame, and turns off the backlight module 300 in a scanning period of the second frame.
In some embodiments, the frame group refers to any two consecutive frames of all frames.
In some embodiments, the backlight module 300 includes a direct type backlight module 300 or a side type backlight module 300.
FIG. 2c is a schematic diagram illustrating a waveform of a gate scan signal of a display device according to an embodiment of the present invention. In an embodiment of the present invention, the timing module 101 turns on the backlight module 300 when the gate driving unit 105 determines that the first number of scanning operations of the plurality of gate lines 105a are performed in the scanning period of the first frame. The timing module 101 turns off the backlight module 300 when the gate driving unit 105 determines that the second number of scanning operations of the plurality of gate lines 105a are performed in the scanning period of the second frame.
In some embodiments, the first number is the same as or different from the second number.
In some embodiments, the first number is not limited to 1/3, 1/2, or 2/3 of the total number of the plurality of gate lines 105a, and the second number is not limited to 1/3, 1/2, or 2/3 of the total number of the plurality of gate lines 105 a.
In some embodiments, the timing module 101 pre-determines that the gray scale parameters corresponding to the pixel units P are changed from a low gray scale value to a high gray scale value in the scanning period of the first frame, and when the gray scale parameters are changed from the high gray scale value to the low gray scale value in the scanning period of the second frame, the backlight module 300 is turned on in the first frame period, and the backlight module 300 is turned off in the second frame period.
In some embodiments, the timing module 101 pre-determines that the gray-scale parameters corresponding to the pixel units P are changed from high gray-scale values to low gray-scale values in the scanning period of the first frame, and when the gray-scale parameters are changed from low gray-scale values to high gray-scale values in the scanning period of the second frame, the backlight module 300 is turned on in the first frame period, and the backlight module 300 is turned off in the second frame period.
In an embodiment of the present application, a display device 200 includes: a display panel 201, comprising: a first substrate 210 including a display region 106 and a wiring region 109 at a periphery thereof, a plurality of gate lines 105a, a plurality of source lines 104a, a plurality of active switches T and a plurality of pixel units P disposed in the display region 106, the plurality of pixel units P being electrically coupled to intersections of the plurality of gate lines 105a and the plurality of source lines 104a through the plurality of active switches T; a second substrate disposed opposite to the first substrate 210; a liquid crystal layer disposed between the first substrate 210 and the second substrate; a source driving unit connected to the plurality of source lines 104 a; a gate driving unit 105 connected to the plurality of gate lines 105 a; a backlight module 300 providing a light source to the display panel; a timing module 101 connected to the backlight module 300, the source driving unit and the gate driving unit 105; wherein, the two frames are a frame group, each frame group includes a first frame and a second frame, the timing module 101 turns on the backlight module 300 when determining that the gate driving unit 105 performs the scanning operation of the plurality of gate lines 105a with a first quantity in the scanning period of the first frame, the timing module 101 turns off the backlight module 300 when determining that the gate driving unit 105 performs the scanning operation of the plurality of gate lines 105a with a second quantity in the scanning period of the second frame, and the first quantity is the same as or different from the second quantity; within the period time of the frame group, the time length of turning on and the time length of turning off the backlight module 300 are 1:1, 1:2 or 1: 3.
FIG. 3 is a flowchart illustrating a method for controlling backlight of a display device according to an embodiment of the present disclosure. Please refer to fig. 1a to fig. 2c for understanding. The method comprises the following steps:
in step S310, the gate driving unit 105 supplies scan signals to the plurality of gate lines 105a one by one.
In step S320, the backlight module 300 is turned on by the timing module 101 in the scanning period of the first frame.
In step S330, the timing module 101 turns off the backlight module 300 in the scanning period of the second frame.
In some embodiments, the timing module 101 turns on the backlight module 300 when determining that the gate driving unit 105 performs the scanning operation of the first number of the gate lines 105a in the scanning period of the first frame, and the timing module 101 turns off the backlight module 300 when determining that the gate driving unit 105 performs the scanning operation of the second number of the gate lines 105a in the scanning period of the second frame.
The display panel 201 of the present application includes a first substrate 210 and a second substrate, and the first substrate 210 and the second substrate may be, for example, a Thin Film Transistor (TFT) substrate or a Color Filter (CF) substrate. However, in some embodiments, the active matrix switch and the color filter layer of the present application may also be formed on the same substrate.
In some embodiments, the display panel of the present application may be, for example, a liquid crystal display panel, but is not limited thereto, and may also be an OLED display panel, a W-OLED display panel, a QLED display panel, a plasma display panel, a curved display panel or other types of display panels.
The time point and the time length of light provided by the backlight module are determined by controlling the on-off time of the backlight module, so that the smear image of a display picture can be effectively reduced. Secondly, the method can maintain the original process requirement and the product cost without greatly changing the premise of the existing production flow. Thirdly, the present application is suitable for the manufacturing process of various display devices because the existing production flow does not need to be changed greatly. Fourthly, the display panel display method and the display panel display device can be suitable for various types of display panels, and the applicability is relatively high.
The terms "in some embodiments" and "in various embodiments" are used repeatedly. This phrase generally does not refer to the same embodiment; it may also refer to the same embodiment. The terms "comprising," "having," and "including" are synonymous, unless the context dictates otherwise.
Although the present application has been described with reference to specific embodiments, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the application, and all changes, substitutions and alterations that fall within the spirit and scope of the application are to be understood as being covered by the following claims.
Claims (6)
1. A display device, comprising:
a display panel, comprising:
the display device comprises a first substrate and a second substrate, wherein the first substrate comprises a display area and a wiring area at the periphery of the display area, a plurality of gate lines, a plurality of source lines, a plurality of active switches and a plurality of pixel units are arranged in the display area, and the pixel units are electrically coupled to intersections of the gate lines and the source lines through the active switches;
a second substrate disposed opposite to the first substrate;
the liquid crystal layer is arranged between the first substrate and the second substrate;
a source driving unit connected to the plurality of source lines;
a gate driving unit connected to the plurality of gate lines;
the backlight module provides a light source for the display panel;
the time sequence module is connected with the backlight module, the source electrode driving unit and the grid electrode driving unit;
the time sequence module starts the backlight module in the scanning period of the first frame, and turns off the backlight module in the scanning period of the second frame; the timing module starts the backlight module when judging that the gate driving unit carries out scanning operation of a first number of the gate lines in a scanning period of the first frame; the timing module is used for closing the backlight module when the gate driving unit is judged to carry out scanning operation on a second number of the gate lines in the scanning period of the second frame; the first number is the same as or different from the second number.
2. The display device of claim 1, wherein the first number is 1/3, 1/2, or 2/3 of a total number of the plurality of gate lines, and the second number is 1/3, 1/2, or 2/3 of the total number of the plurality of gate lines.
3. The display device according to claim 1, wherein the timing module pre-determines that the gray scale parameters corresponding to the plurality of pixel units are shifted from a low gray scale value to a high gray scale value in a scanning period of the first frame, and turns on the backlight module in the first frame period and turns off the backlight module in the second frame period when the gray scale parameters are shifted from the high gray scale value to the low gray scale value in the scanning period of the second frame.
4. The display device according to claim 3, wherein the timing module pre-determines whether the gray scale parameters corresponding to the plurality of pixel units are shifted from a high gray scale value to a low gray scale value in a scanning period of the first frame, and turns on the backlight module in the first frame period and turns off the backlight module in the second frame period when the gray scale parameters are shifted from the low gray scale value to the high gray scale value in the scanning period of the second frame.
5. A backlight control method of a display device, comprising:
providing scanning signals to the gate lines one by one through a gate driving unit;
starting the backlight module in a scanning period of a first frame through a time sequence module;
closing the backlight module in a scanning period of a second frame through the time sequence module; the timing module turns on the backlight module when judging that the gate driving unit performs the scanning operation of the gate lines in a first quantity in the scanning period of the first frame, and turns off the backlight module when judging that the gate driving unit performs the scanning operation of the gate lines in a second quantity in the scanning period of the second frame.
6. A display device, comprising:
a display panel, comprising:
the display device comprises a first substrate and a second substrate, wherein the first substrate comprises a display area and a wiring area at the periphery of the display area, a plurality of gate lines, a plurality of source lines, a plurality of active switches and a plurality of pixel units are arranged in the display area, and the pixel units are electrically coupled to intersections of the gate lines and the source lines through the active switches;
a second substrate disposed opposite to the first substrate;
the liquid crystal layer is arranged between the first substrate and the second substrate;
a source driving unit connected to the plurality of source lines;
a gate driving unit connected to the plurality of gate lines;
the backlight module provides a light source for the display panel;
the time sequence module is connected with the backlight module, the source electrode driving unit and the grid electrode driving unit;
the two frames are a frame group, each frame group comprises a first frame and a second frame, the timing module starts the backlight module when judging that the gate driving unit carries out scanning operation of a first number of the gate lines in a scanning period of the first frame, the timing module closes the backlight module when judging that the gate driving unit carries out scanning operation of a second number of the gate lines in a scanning period of the second frame, and the first number and the second number are the same or different;
in the period time of the frame group, the time length of the backlight module for opening and the time length of the backlight module for closing are 1:1, 1:2 or 1: 3.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810265559.5A CN108492786B (en) | 2018-03-28 | 2018-03-28 | Display device and backlight control method |
| PCT/CN2018/121238 WO2019184458A1 (en) | 2018-03-28 | 2018-12-14 | Display device and backlight control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810265559.5A CN108492786B (en) | 2018-03-28 | 2018-03-28 | Display device and backlight control method |
Publications (2)
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| CN108492786B (en) * | 2018-03-28 | 2019-12-31 | 惠科股份有限公司 | Display device and backlight control method |
| CN109509437B (en) * | 2018-12-26 | 2021-08-24 | 厦门天马微电子有限公司 | Backlight module, scanning driving method of backlight module and display device |
| CN109801591A (en) * | 2019-04-03 | 2019-05-24 | 深圳市明微电子股份有限公司 | A kind of display control method and device |
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| CN101393722B (en) * | 2007-09-19 | 2012-11-21 | 奇美电子股份有限公司 | Controlling method for backlight module |
| JP2009186676A (en) * | 2008-02-05 | 2009-08-20 | Toshiba Mobile Display Co Ltd | Liquid crystal display device |
| CN101727840A (en) * | 2008-10-10 | 2010-06-09 | 华映视讯（吴江）有限公司 | Display device, controller of display device and driving method for controller |
| JP2015007575A (en) * | 2013-06-25 | 2015-01-15 | 株式会社ジャパンディスプレイ | Liquid-crystal display panel inspection method, and liquid-crystal display panel inspection device |
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| CN106297713B (en) * | 2016-09-26 | 2020-01-24 | 苏州佳世达电通有限公司 | Display method and display device for improving image dynamic blurring |
| CN106782274A (en) * | 2017-01-17 | 2017-05-31 | 京东方科技集团股份有限公司 | A kind of display device and its driving method |
| CN107290883A (en) * | 2017-07-20 | 2017-10-24 | 深圳市华星光电半导体显示技术有限公司 | The driving method of liquid crystal display panel |
| CN107464538B (en) * | 2017-08-25 | 2019-04-05 | 惠科股份有限公司 | Display device and its driving method |
| CN107767822A (en) * | 2017-11-24 | 2018-03-06 | 友达光电股份有限公司 | Liquid crystal display device and its dynamic backlight adjusting method |
| CN108492786B (en) * | 2018-03-28 | 2019-12-31 | 惠科股份有限公司 | Display device and backlight control method |
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