CN111916033A - Display device and driving method thereof - Google Patents
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- CN111916033A CN111916033A CN202010836819.7A CN202010836819A CN111916033A CN 111916033 A CN111916033 A CN 111916033A CN 202010836819 A CN202010836819 A CN 202010836819A CN 111916033 A CN111916033 A CN 111916033A
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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
- G09G3/3674—Details of drivers for scan electrodes
- G09G3/3677—Details of drivers for scan electrodes suitable for active matrices only
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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
- G09G2320/0242—Compensation of deficiencies in the appearance of colours
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Abstract
The application discloses a display device and a driving method thereof. The switch array substrate of the display device is provided with a display area and comprises a plurality of first gate lines, a plurality of second gate lines and a plurality of pixels, wherein the plurality of pixels are positioned in the display area, and the first gate drive circuit and the second gate drive circuit are respectively positioned at two opposite sides outside the display area. The driving method includes: outputting a first gate driving signal according to a first signal by using a first gate driving circuit and driving a plurality of first sub-regions of a plurality of pixels through a plurality of first gate lines respectively; outputting a second gate driving signal according to a second signal by using a second gate driving circuit, and driving a plurality of second sub-regions of the plurality of pixels through a plurality of second gate lines respectively; the duty ratio of the first signal is different from that of the second signal. The display device can improve the color cast phenomenon.
Description
Technical Field
The present disclosure relates to a display device and a driving method thereof, and more particularly, to a display device capable of improving color shift and a driving method thereof.
Background
With the progress of technology, flat panel display devices have been widely used in various fields, such as liquid crystal display devices, which have the excellent characteristics of light weight, low power consumption and no radiation, and thus have gradually replaced the conventional cathode ray tube display devices and are applied to various electronic products, such as mobile phones, portable multimedia devices, notebook computers, liquid crystal televisions and liquid crystal screens.
The liquid crystal display device mainly utilizes an electric field to control the rotation angle of liquid crystal molecules, so that light can pass through the liquid crystal molecules to display images. For a va (vertical alignment) type lcd, especially for a large-sized lcd, color shift occurs when viewing from a side view, and the color shift is more obvious when viewing from a side view. In order to reduce color shift and improve the viewing angle range, a VA-type large-size lcd usually performs a Low Color Shift (LCS) pixel design, generally dividing a pixel region into a bright region and a dark region, mixing the two regions by optical representations of different voltage-transmittance curves (V-T dark), and then properly adjusting the area ratio of the bright and dark regions to effectively suppress gray scale whitening at a large viewing angle, thereby improving the color shift.
Disclosure of Invention
In view of the deficiencies of the prior art, the inventors have developed the present application. The present application provides a display device and a driving method thereof, which are different from the prior art, and can improve the color shift phenomenon of the display device and the optical quality.
The application provides a driving method of a display device, the display device includes a switch array substrate, a first gate drive circuit and a second gate drive circuit, the switch array substrate has a display area, and include many first gate lines, many second gate lines and a plurality of picture elements, a plurality of picture elements are located the display area, each picture element is divided into a first subregion and a second subregion, first gate drive circuit and second gate drive circuit are located the relative both sides outside the display area respectively, the driving method is characterized by comprising: outputting a first gate driving signal according to a first signal by using a first gate driving circuit and driving a plurality of first sub-regions of a plurality of pixels through a plurality of first gate lines respectively; outputting a second gate driving signal according to a second signal by using a second gate driving circuit, and driving a plurality of second sub-regions of the plurality of pixels through a plurality of second gate lines respectively; the duty ratio of the first signal is different from that of the second signal.
The present application further provides a display device, which includes a switch array substrate, a first gate driving circuit and a second gate driving circuit. The switch array substrate is provided with a display area and comprises a plurality of first gate lines, a plurality of second gate lines and a plurality of pixels, wherein the plurality of pixels are positioned in the display area, and each pixel is divided into a first sub-area and a second sub-area. The first gate driving circuit and the second gate driving circuit are respectively located at two opposite sides outside the display area, the first gate driving circuit outputs a first gate driving signal according to a first signal and respectively drives a plurality of first sub-areas of the plurality of pixels through a plurality of first gate lines, the second gate driving circuit outputs a first gate driving signal according to a second signal and respectively drives a plurality of second sub-areas of the plurality of pixels through a plurality of second gate lines, and the duty ratios of the first signal and the second signal are different.
In one embodiment, the first gate driving circuit includes a first driving element, the second gate driving circuit includes a second driving element, the first signal is input to the first driving element to enable the first driving element to output the first gate driving signal to drive the first sub-region of the pixel, and the second signal is input to the second driving element to enable the second driving element to output the second gate driving signal to drive the second sub-region of the pixel.
In one embodiment, the first signal has two first clocks, the second signal has two second clocks, the two first clocks sequentially turn on two adjacent first driving devices, and the two second clocks sequentially turn on two adjacent second driving devices.
In an embodiment, the first sub-region includes a first liquid crystal capacitor, the second sub-region includes a second liquid crystal capacitor, and when the first gate driving signal and the second gate driving signal drive the first sub-region and the second sub-region of the pixel respectively, a source driving signal is applied to the first liquid crystal capacitor and the second liquid crystal capacitor respectively, so that the voltages across the first liquid crystal capacitor and the second liquid crystal capacitor are different.
In an embodiment, the first sub-area includes a first switch, the second sub-area includes a second switch, and when the first gate driving signal turns on the first switch and the second gate driving signal turns on the second switch, the source driving signal makes the cross voltages of the first liquid crystal capacitor and the second liquid crystal capacitor different.
The present application further provides a display device, which includes a switch array substrate, a first gate driving circuit and a second gate driving circuit. The switch array substrate is provided with a display area and comprises a plurality of first gate lines, a plurality of second gate lines and a plurality of pixels, wherein the plurality of pixels are positioned in the display area, and each pixel is divided into a first sub-area and a second sub-area. The first gate drive circuit and the second gate drive circuit are respectively positioned at two opposite sides outside the display area, the first gate drive circuit outputs a first gate drive signal according to a first signal and respectively drives a plurality of first sub-areas of a plurality of pixels through a plurality of first gate lines, the second gate drive circuit outputs a second gate drive signal according to a second signal and respectively drives a plurality of second sub-areas of the plurality of pixels through a plurality of second gate lines, and the duty ratios of the first signal and the second signal are different; the first gate drive circuit comprises a first drive element, the second gate drive circuit comprises a second drive element, a first signal is input into the first drive element to enable the first drive element to output a first gate drive signal to drive a first sub-area of the pixel, and a second signal is input into the second drive element to enable the second drive element to output a second gate drive signal to drive a second sub-area of the pixel; in addition, the first sub-area comprises a first liquid crystal capacitor, the second sub-area comprises a second liquid crystal capacitor, and when the first gate driving signal and the second gate driving signal drive the first sub-area and the second sub-area of the pixel respectively, a source driving signal is applied to the first liquid crystal capacitor and the second liquid crystal capacitor respectively, so that the cross voltages of the first liquid crystal capacitor and the second liquid crystal capacitor are different.
In summary, in the display device and the driving method thereof of the present application, the first gate driving circuit outputs the first gate driving signal according to the first signal and respectively drives the first sub-regions of the pixels through the first gate lines, and the second gate driving circuit outputs the first gate driving signal according to the second signal and respectively drives the second sub-regions of the pixels through the second gate lines, and the first signal and the second signal have different duty ratios, so that different gate driving signal waveforms can be formed, and further the first sub-regions and the second sub-regions of the pixels have different charging effects to form the bright regions and the dark regions.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the application, are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application. It is obvious that the drawings in the following description are only some embodiments of the application, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:
fig. 1 and fig. 2 are different schematic diagrams of a display device according to an embodiment of the present disclosure.
Fig. 3 is a schematic diagram illustrating a relationship between a switch array substrate and two gate driving circuits of a display device according to an embodiment.
Fig. 4 is an equivalent circuit diagram of a pixel of a display device according to an embodiment.
FIG. 5 is a waveform diagram of the first signal and the second signal according to an embodiment.
FIG. 6A is a waveform diagram of a first clock rate, a first gate driving signal and a voltage across a first liquid crystal capacitor according to an embodiment.
FIG. 6B is a waveform diagram of a second clock, a second gate driving signal and a voltage across the second liquid crystal capacitor according to an embodiment.
Detailed Description
Specific structural and functional details disclosed herein are merely representative and are provided for purposes of describing example embodiments of the present application. This application may, however, be embodied in many alternate forms and should not be construed as limited to only the embodiments set forth herein.
In the description of the present application, it is to be understood that the terms "center," "lateral," "upper," "lower," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and therefore should not be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified. Furthermore, the term "comprises" and any variations thereof is intended to cover non-exclusive inclusions.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used herein, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
Hereinafter, a display device and a driving method thereof according to preferred embodiments of the present application will be described with reference to the accompanying drawings, in which like elements will be described with like reference numerals.
Fig. 1 and fig. 2 are respectively different schematic diagrams of a display device 1 according to an embodiment of the present application. Fig. 1 is a schematic side view of the display device 1, and fig. 2 is a schematic top view of the switch array substrate 11 of the display device 1.
As shown in fig. 1, the display device 1 can be used for displaying an image and includes a switch array substrate 11 and an opposite substrate 12, wherein the switch array substrate 11 and the opposite substrate 12 are disposed opposite to each other. The display device 1 is a flat display device, such as a Liquid Crystal Display (LCD) or an Organic Light Emitting Diode (OLED) display device. The display device 1 of the present embodiment is exemplified by a liquid crystal display device, and therefore, a liquid crystal layer 13 can be sandwiched between the switch array substrate 11 and the opposite substrate 12 to form a plurality of pixels arranged in an array. The switch array substrate 11 of the present embodiment is a display substrate, and the opposite substrate 12 is a color filter substrate, for example. However, in other embodiments, the black matrix (black matrix) or the filter layer on the color filter substrate may be disposed on the switch array substrate 11, so that the switch array substrate 11 is a boa (bm on array) substrate or a coa (color filter on array) substrate, which is not limited. In various embodiments, if the display device 1 is an OLED, the opposite substrate 12 may be a protection substrate to protect the switch array substrate 11 from the intrusion of foreign objects.
As shown in fig. 2, the switch array substrate 11 of the present embodiment has a display Area (Active Area) AA and a non-display Area NAA. The display area AA is an area of the switch array substrate 11 for displaying an image, and light can pass through the display area AA to reach a person viewing the image. The non-display area NAA is an area of the switch array substrate 11 where an image screen cannot be displayed. The display device 1 of the present embodiment is a Gate On Array (GOA) display device, and therefore, the display device 1 may further include at least one Gate driving circuit, and the Gate driving circuit is located in the non-display area NAA of the switch Array substrate 11, so as not to shield the light from penetrating through the non-display area NAA.
The display device 1 of the present embodiment includes two gate driving circuits: for example, the first gate driving circuit 14a and the second gate driving circuit 14b are respectively located at two opposite sides outside the display area AA, so that the display apparatus 1 becomes a display capable of bilateral driving. Herein, the first gate driving circuit 14a and the second gate driving circuit 14b are formed on the switch array substrate 11 by a thin film process, and thus may be referred to as a GOA (gate on plane) circuit or a gop (gop) circuit, so that the cost of an Integrated Circuit (IC) of the gate driving circuit can be saved, and the cost of the display device 1 can be further reduced.
Fig. 3 is a schematic diagram illustrating a relationship between the switch array substrate 11 and two gate driving circuits 14a and 14b of the display device 1 according to an embodiment. As shown in fig. 3, the switch array substrate 11 includes a plurality of first gate lines, a plurality of second gate lines, and a plurality of pixels P (fig. 3 illustrates 6 first gate lines Ga 1-Ga 6, 6 second gate lines Gb 1-Gb 6, and 6 pixels P), and the plurality of pixels P are located in the display area AA of the switch array substrate 11 and may be arranged in an array. Wherein each pixel P can be divided into a first sub-area a and a second sub-area b. In addition, the first gate driving circuit 14a may include a plurality of first driving elements 141a, the second gate driving circuit 14b may include a plurality of second driving elements 141b, the plurality of first driving elements 141a of the first gate driving circuit 14a may be electrically connected to the plurality of first sub-regions a of the plurality of pixels P through the plurality of first gate lines Ga 1-Ga 6, respectively, and the plurality of second driving elements 141b of the second gate driving circuit 14b may be electrically connected to the plurality of second sub-regions b of the plurality of pixels P through the plurality of second gate lines Gb 1-Gb 6, respectively.
The first driving element 141a of the first gate driving circuit 14a outputs a first gate driving signal according to a first signal Sa to drive the first sub-region a of the pixel P through the first gate lines Ga 1-Ga 6, and the second driving element 141b of the second gate driving circuit 14b outputs a second gate driving signal according to a second signal Sb to drive the second sub-region b of the pixel P through the second gate lines Gb 1-Gb 6. Here, the first driving element 141a and the second driving element 141b may be Shift Registers (SR), and when the first signal Sa is input to the first driving element 141a and the second signal Sb is input to the second driving element 141b, the first driving element 141a and the second driving element 141b can respectively turn on the switches of the first sub-area a and the second sub-area b of the pixel P.
In addition, the display device 1 may further include a timing control circuit and a source driving circuit (not shown), and the source driving circuit may be electrically connected to the pixel electrodes (not shown) of the pixels P of the switch array substrate 11 through a plurality of data lines (not shown). In addition, the timing control circuit can be electrically connected to the source driving circuit and the first and second gate driving circuits 14a and 14b, respectively, and can transmit a vertical clock signal and a vertical synchronization signal to the first and second gate driving circuits 14a and 14b, convert a video signal received from an external interface into a data signal for the source driving circuit, and transmit a data signal, a horizontal clock signal, and a horizontal synchronization signal to the source driving circuit. In addition, the first gate driving circuit 14a can sequentially turn on the first gate lines Ga 1-Ga 6 through the first driving element 141a according to the vertical clock signal and the vertical synchronization signal, and the second gate driving circuit 14b can sequentially turn on the second gate lines Gb 1-Gb 6 through the second driving element 141b according to the vertical clock signal and the vertical synchronization signal. When the first gate lines Ga1 through Ga6 and the second gate lines Gb1 through Gb6 are sequentially turned on, the source driving circuit transmits the data signals corresponding to each row of pixels P to the pixel electrodes of the pixels P through the data lines, so that the display device 1 can display images.
Referring to fig. 3 in conjunction with fig. 4 and fig. 5, wherein fig. 4 is a schematic diagram of an equivalent circuit of a pixel P of the display device 1 according to an embodiment, and fig. 5 is a schematic diagram of waveforms of the first signal Sa and the second signal Sb according to an embodiment.
As shown in fig. 4, the first sub-area a of one pixel P of the present embodiment may include a first switch T1, a first liquid crystal capacitor Clca and a first storage capacitor Csta, and the second sub-area b may include a second switch T2, a second liquid crystal capacitor Clcb and a second storage capacitor Cstb. The gate of the first switch T1 is electrically connected to the first gate line GaN (N is a positive integer), the source of the first switch T1 is electrically connected to the data line SM (M is a positive integer), the drain of the first switch T1 is electrically connected to one end of the first liquid crystal capacitor Clca and one end of the first storage capacitor Csta, and the other end of the first liquid crystal capacitor Clca and the other end of the first storage capacitor Csta are, for example, grounded. In addition, the gate of the second switch T2 is electrically connected to the second gate line GbN, the source of the second switch T2 is electrically connected to the data line SM, the drain of the second switch T2 is electrically connected to one ends of the second liquid crystal capacitor Clcb and the second storage capacitor Cstb, and the other ends of the second liquid crystal capacitor Clcb and the second storage capacitor Cstb are grounded.
As shown in fig. 3, the first signal Sa can be input into the first driving element 141a, such that the first driving element 141a can output the first gate driving signal Ga to drive the first sub-region a of each pixel P, and the second signal Sb can be input into the second driving element 141b, such that the second driving element 141b can output the second gate driving signal Gb to drive the second sub-region b of each pixel P. As shown in fig. 5, the first signal Sa of the present embodiment has two first clocks (clocks): CK1a, CK2a, the second signal Sb has two second clocks: CK1b and CK2b, the two first clock pulses CK1a and CK2a sequentially turn on the two adjacent first driving elements 141a, the two second clock pulses CK1b and CK2b sequentially turn on the two adjacent second driving elements 141b, so that the first driving elements 141a of the first gate driving circuit 14a can respectively output the first gate driving signal Ga to drive the first sub-regions a of the pixels P, and the second driving elements 141b of the second gate driving circuit 14b can respectively output the second gate driving signal Gb to drive the second sub-regions b of the pixels P. The duty ratios (duty ratios) of the first clocks CK1a and CK2a of the first signal Sa are different from the duty ratios (duty ratios) of the second clocks CK1b and CK2b of the second signal Sb.
Therefore, when the first and second gate driving signals Ga and Gb turn on the first and second switches T1 and T2, respectively, a source driving signal Vs can be applied to the first and second liquid crystal capacitors Clca and Clcb through the data line SM, respectively, to charge the first and second liquid crystal capacitors Clca and Clcb and also charge the first and second storage capacitors Csta and Cstb. The purpose of the first storage capacitor Csta and the second storage capacitor Cstb is to reduce the voltage variation of the first liquid crystal capacitor Clca and the second liquid crystal capacitor Clcb caused by the parasitic capacitance when the first switch T1 and the second switch T2 are turned off (non-conductive), and to maintain the characteristics of the first sub-area a and the second sub-area b.
In fig. 5, the first clock CK1a is transmitted to the first driving element 141a at time t1, the second clock CK1b is transmitted to the second driving element 141b at time t3, and the first clock CK1a and the second clock CK1b fall simultaneously at time t2 (t3 is located between t1 and t 2). In addition, although the levels of the first clocks CK1a and CK2a and the second clocks CK1b and CK2b are the same, the duty ratios of the first clocks CK1a and CK2a are the same, and the duty ratios of the second clocks CK1b and CK2b are the same, the duty ratios of the first clocks CK1a and CK2a are larger than the duty ratios of the second clocks CK1b and CK2b, that is, when the first clocks CK1a and CK2a and the second clocks CK1b and CK2b have the same period T, the high level time Da of the first clocks CK1a and CK2a is larger than the high level time Db (Da > Db) of the second clocks CK1b and CK2 b. The duty ratios of the first clock CK1a and CK2a and the second clock CK1b and CK2b may be respectively between 10% and 75%, for example. In some embodiments, the duty ratio of the first clock CK1a and CK2a may be 50%, and the duty ratio of the second clock CK1b and CK2b may be 25%.
Fig. 6A is a waveform diagram of the first clock CK1a, the first gate driving signal Ga and the voltage across the first liquid crystal capacitor Clca Va according to an embodiment, and fig. 6B is a waveform diagram of the second clock CK1B, the second gate driving signal Gb and the voltage across the second liquid crystal capacitor Clcb according to an embodiment.
At time T1, the first driving element 141a receives the first clock CK1a of the first signal Sa, so that the first driving element 141a can output the first gate driving signal Ga through the first gate line GaN to turn on the first switch T1 of the first sub-area a of the pixel P, and at time T3, the second driving element 141b receives the second clock CK1b of the second signal Sb, so that the second driving element 141b can output the second gate driving signal Gb through the second gate line GbN to turn on the second switch T2 of the second sub-area b of the pixel P; when the first switch T1 of the first sub-area a is turned on and the second switch T2 of the second sub-area b is turned on, the source driving signal Vs can be respectively applied to the first liquid crystal capacitor Clca of the first sub-area a and the second liquid crystal capacitor Clcb of the second sub-area b through the data line SM, because the duty ratio of the first clock CK1a of the first signal Sa is greater than the duty ratio of the second clock CK1b of the second signal Sb, the first gate driving signal Ga output by the first driving element 141a turns on the first switch T1 for a longer time, and the second gate driving signal Gb output by the second driving element 141b turns on the second switch T2 for a shorter time, so that the first sub-area a is driven by the first gate driving signal Ga for a longer time, the source driving signal Vs charges the first liquid crystal capacitor Clca for a longer time, and the second sub-area b is driven by the second gate driving signal Gb for a shorter time, the charging time of the source driving signal Vs to the second liquid crystal capacitor Clcb is relatively short, so that the voltage across Va of the first liquid crystal capacitor Clca is higher than the voltage across Va of the second liquid crystal capacitor Clcb, and a potential difference occurs between the first sub-area a and the second sub-area b, so that the tilt angles of the liquid crystal molecules of the first sub-area a and the second sub-area b are different, and a bright area and a dark area can be formed.
In addition, the driving method of the display device 1 of the present embodiment is: outputting a first gate driving signal Ga by the first gate driving circuit 14a according to the first signal Sa and driving the first sub-regions a of the pixels P through the first gate lines, respectively; outputting a second gate driving signal Gb by a second gate driving circuit 14b according to the second signal Sb and driving a plurality of second sub-regions b of the plurality of pixels P through a plurality of second gate lines, respectively; the duty ratios of the first signal Sa and the second signal Sb are different. Here, the technical contents of the display device 1 and the driving method thereof have been described in detail above, and are not described herein again.
In summary, in the display device and the driving method thereof of the present application, the first gate driving circuit outputs the first gate driving signal according to the first signal and respectively drives the first sub-regions of the pixels through the first gate lines, and the second gate driving circuit outputs the first gate driving signal according to the second signal and respectively drives the second sub-regions of the pixels through the second gate lines, and the first signal and the second signal have different duty ratios, so that different gate driving signal waveforms can be formed, and the first sub-regions and the second sub-regions of the pixels have different charging effects to form the bright regions and the dark regions.
The foregoing is by way of example only, and not limiting. Any equivalent modifications or variations without departing from the spirit and scope of the present application should be included in the scope of the claims.
Claims (10)
1. A driving method of a display device, the display device comprising: the driving method comprises the following steps of providing a switch array substrate, a first gate driving circuit and a second gate driving circuit, wherein the switch array substrate is provided with a display area and comprises a plurality of first gate lines, a plurality of second gate lines and a plurality of pixels, the plurality of pixels are arranged in the display area, each pixel is divided into a first sub-area and a second sub-area, the first gate driving circuit and the second gate driving circuit are respectively arranged at two opposite sides outside the display area, and the driving method comprises the following steps:
outputting a first gate driving signal by using the first gate driving circuit according to a first signal and driving the first sub-regions of the pixels through the first gate lines respectively;
outputting a second gate driving signal according to a second signal by using the second gate driving circuit and driving the second sub-regions of the pixels through the second gate lines respectively; the duty ratio of the first signal is different from that of the second signal.
2. The driving method as claimed in claim 1, wherein the first gate driving circuit comprises a first driving element, the second gate driving circuit comprises a second driving element, the first signal is inputted to the first driving element to make the first driving element output the first gate driving signal to drive the first sub-region of the pixel, and the second signal is inputted to the second driving element to make the second driving element output the second gate driving signal to drive the second sub-region of the pixel.
3. The driving method according to claim 2, wherein the first signal has two first clocks, the second signal has two second clocks, the two first clocks sequentially turn on two adjacent first driving elements, and the two second clocks sequentially turn on two adjacent second driving elements.
4. The driving method as claimed in claim 1, wherein the first sub-region comprises a first liquid crystal capacitor, the second sub-region comprises a second liquid crystal capacitor, and when the first gate driving signal and the second gate driving signal drive the first sub-region and the second sub-region of the pixel respectively, a source driving signal is applied to the first liquid crystal capacitor and the second liquid crystal capacitor respectively, so that the voltages across the first liquid crystal capacitor and the second liquid crystal capacitor are different.
5. A display device, comprising:
the switch array substrate is provided with a display area and comprises a plurality of first gate lines, a plurality of second gate lines and a plurality of pixels, wherein the plurality of pixels are positioned in the display area, and each pixel is divided into a first sub-area and a second sub-area; and
the first gate driving circuit outputs a first gate driving signal according to a first signal and drives a plurality of first sub-regions of the pixels through the plurality of first gate lines respectively, the second gate driving circuit outputs a second gate driving signal according to a second signal and drives a plurality of second sub-regions of the pixels through the plurality of second gate lines respectively, and the duty ratios of the first signal and the second signal are different.
6. The display device as claimed in claim 5, wherein the first gate driving circuit comprises a first driving element, the second gate driving circuit comprises a second driving element, the first signal is inputted to the first driving element to cause the first driving element to output the first gate driving signal to drive the first sub-region of the pixel, and the second signal is inputted to the second driving element to cause the second driving element to output the second gate driving signal to drive the second sub-region of the pixel.
7. The display device according to claim 6, wherein the first signal has two first clocks, the second signal has two second clocks, the two first clocks sequentially turn on two adjacent first driving elements, and the two second clocks sequentially turn on two adjacent second driving elements.
8. The display device according to claim 5, wherein the first sub-region comprises a first liquid crystal capacitor, the second sub-region comprises a second liquid crystal capacitor, and a source driving signal is respectively applied to the first liquid crystal capacitor and the second liquid crystal capacitor when the first gate driving signal and the second gate driving signal respectively drive the first sub-region and the second sub-region of the pixel.
9. The display device as claimed in claim 8, wherein the first sub-area comprises a first switch, the second sub-area comprises a second switch, and the source driving signal makes the voltages across the first liquid crystal capacitor and the second liquid crystal capacitor different when the first gate driving signal turns on the first switch and the second gate driving signal turns on the second switch.
10. A display device, comprising:
the switch array substrate is provided with a display area and comprises a plurality of first gate lines, a plurality of second gate lines and a plurality of pixels, wherein the plurality of pixels are positioned in the display area, and each pixel is divided into a first sub-area and a second sub-area; and
the first gate drive circuit and the second gate drive circuit are respectively positioned at two opposite sides outside the display area, the first gate drive circuit outputs a first gate drive signal according to a first signal and respectively drives the first sub-areas of the pixels through the first gate lines, the second gate drive circuit outputs a second gate drive signal according to a second signal and respectively drives the second sub-areas of the pixels through the second gate lines, and the duty ratios of the first signal and the second signal are different;
wherein the first gate driving circuit comprises a first driving element, the second gate driving circuit comprises a second driving element, the first signal is input into the first driving element to make the first driving element output the first gate driving signal to drive the first sub-area of the pixel, and the second signal is input into the second driving element to make the second driving element output the second gate driving signal to drive the second sub-area of the pixel;
the first sub-area comprises a first liquid crystal capacitor, the second sub-area comprises a second liquid crystal capacitor, and when the first gate driving signal and the second gate driving signal drive the first sub-area and the second sub-area of the pixel respectively, a source driving signal is applied to the first liquid crystal capacitor and the second liquid crystal capacitor respectively, so that the cross voltages of the first liquid crystal capacitor and the second liquid crystal capacitor are different.
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| CN202010836819.7A CN111916033A (en) | 2020-08-19 | 2020-08-19 | Display device and driving method thereof |
| PCT/CN2020/123130 WO2022036844A1 (en) | 2020-08-19 | 2020-10-23 | Display device and driving method therefor |
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| CN202010836819.7A CN111916033A (en) | 2020-08-19 | 2020-08-19 | Display device and driving method thereof |
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| TW201225038A (en) * | 2010-12-08 | 2012-06-16 | Au Optronics Corp | Liquid crystal display and method for driving panel thereof |
| TWI633533B (en) * | 2017-09-21 | 2018-08-21 | 友達光電股份有限公司 | Liquid crystal display device |
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| WO2022036844A1 (en) | 2022-02-24 |
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Application publication date: 20201110 |