CN111933090A - Display device and display method - Google Patents
Display device and display method Download PDFInfo
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- CN111933090A CN111933090A CN202010850027.5A CN202010850027A CN111933090A CN 111933090 A CN111933090 A CN 111933090A CN 202010850027 A CN202010850027 A CN 202010850027A CN 111933090 A CN111933090 A CN 111933090A
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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
- 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
- G09G3/3696—Generation of voltages supplied to electrode drivers
Abstract
The invention discloses a display device and a display method, wherein a display panel comprises a plurality of data lines, a plurality of sub-pixel units, a plurality of first switching tubes, a plurality of second switching tubes and a detection control module, wherein the sub-pixel units in the N row of odd-numbered lines are directly connected to the N data line, a first switching tube is arranged between the sub-pixel units in the N row of even-numbered lines and the N data line, a second switching tube is arranged between the sub-pixel units and the N +1 data line, and N is a positive integer; the detection control module is used for detecting target parameters of a display picture of the display panel in real time, generating corresponding control signals according to detection results and controlling the on-off states of the first switch tubes and the second switch tubes, wherein the on-off states of the first switch tubes and the second switch tubes are opposite. The invention can normally drive the heavy-load picture without replacing a driving chip with super-strong thrust and has low power consumption.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display device and a display method.
Background
A thin film transistor liquid crystal display panel (TFT-LCD) has advantages of good picture quality, small volume, light weight, low driving voltage, low power consumption, no radiation, and relatively low manufacturing cost, and is dominant in the field of flat panel display.
In order to avoid polarization of liquid crystal in the normal display of the liquid crystal display panel, the voltage applied to the pixel electrode is alternately inverted with respect to the common electrode, that is, the voltage of the pixel electrode is changed back and forth between positive and negative polarities, which is called inversion driving. When the voltage of the pixel electrode is higher than that of the common electrode, it is called positive polarity (+), and when the voltage of the pixel electrode is lower than that of the common electrode, it is called negative polarity (-).
Fig. 1 shows a schematic structural diagram of a display panel in a conventional display device, and as shown in fig. 1, the display panel generally includes a plurality of scan lines, a plurality of data lines (R, G, B), and a plurality of sub-pixel units arranged in an array, where each sub-pixel unit P in the plurality of sub-pixel units is connected to one data line, and the data lines connected to the sub-pixel units in the same column are the same. Therefore, when the polarity of the sub-pixel units on the display panel is reversed, the switching of the positive electrode and the negative electrode needs to be repeatedly performed on the same data line, the chip needs to have enough thrust in the action, and otherwise, the display abnormality of the display panel can occur.
In the lighting scheme based on the display panel, under a lighting heavy-load mode, due to the fact that the load is too heavy, the thrust of the driving chip is not enough to completely push the display panel to normally light the display panel, so that abnormal conditions (such as pixel error flushing, uneven brightness, partial brightness of a first row and the like) can be caused under the heavy-load mode, the taste of the display panel is influenced, and the requirements of customers cannot be met. And if change the driver chip that the propulsion is stronger, then can increase system power consumption, the driver chip that the propulsion is stronger also can still be accompanied by slight heavy load picture taste not good in the use simultaneously, leads to appearing the risk that the power consumption exceeds the rule.
Therefore, there is a need to provide an improved technical solution to overcome the above technical problems in the prior art.
Disclosure of Invention
In order to solve the above technical problems, the present invention provides a display device and a display method, which can normally drive a heavy-duty screen without replacing a driving chip with a super-strong thrust, so that a display panel can still normally display the screen in a heavy-duty mode, and the power consumption is low.
In one aspect, the present invention provides a display device, comprising: the display panel is provided with a plurality of data lines and a plurality of scanning lines, the data lines and the scanning lines are mutually insulated and crossed to limit and form a plurality of sub-pixel units, and the sub-pixel units are arranged in an array; a gate driver connected to the plurality of scan lines and providing a gate driving signal to drive the plurality of scan lines; a source driver connected to the plurality of data lines and providing data signals to drive the plurality of data lines; the time schedule controller is connected with the grid driver and the source driver and is used for driving and controlling the grid driver and the source driver, and the display panel is also provided with a plurality of first switch tubes and a plurality of second switch tubes, wherein the sub-pixel units positioned in the N column of odd-numbered rows are directly connected to the N data line, the first switch tubes are electrically connected between the sub-pixel units positioned in the N column of even-numbered rows and the N data line, the second switch tubes are electrically connected between the sub-pixel units positioned in the N column of even-numbered rows and the N +1 data line, and N is a positive integer; the display device further includes: the detection control module is used for detecting target parameters of a display picture of the display panel in real time, generating corresponding control signals according to detection results, and controlling the on-off states of the plurality of first switch tubes and the plurality of second switch tubes, wherein the on-off states of the first switch tubes and the second switch tubes are opposite.
Preferably, the target parameter of the display screen is pixel data.
Preferably, the detection control module includes a pixel data detection unit, and the pixel data detection unit is disposed in the timing controller, and is configured to detect pixel data of the display panel in a current display frame in real time, and compare the pixel data with pre-stored heavy-load pixel data, so as to generate one of a first feedback signal and a second feedback signal according to a comparison result; the control signal generating unit is arranged in the source driver and used for receiving the first feedback signal to generate a first control signal or receiving the second feedback signal to generate a second control signal, wherein the first control signal controls the plurality of first switching tubes to be switched on and the plurality of second switching tubes to be switched off, a data line connected with an even-numbered row of sub-pixel units in each column of sub-pixel units on the display panel and a data line connected with an odd-numbered row of sub-pixel units on the display panel are the same data line, and the display panel presents a first driving mode; the second control signal controls the plurality of first switching tubes to be turned off and controls the plurality of second switching tubes to be turned on, the data lines connected with the sub-pixel units in the even rows in each column of sub-pixel units on the display panel and the data lines connected with the sub-pixel units in the odd rows are two adjacent data lines, and the display panel is in a second driving mode.
Preferably, the target parameter of the display screen is an input current.
Preferably, the detection control module includes a current detection unit disposed in the source driver, and configured to detect an input current corresponding to an input voltage of the display panel in real time, and compare the input current with a preset current value to generate one of a first trigger signal and a second trigger signal according to a comparison result, where the first trigger signal is used to trigger the timing controller to generate a third feedback signal, and the second trigger signal is used to trigger the timing controller to generate a fourth feedback signal; the control signal generating unit is arranged in the source driver and is used for receiving the third feedback signal to generate a first control signal or receiving the fourth feedback signal to generate a second control signal, wherein the first control signal controls the plurality of first switching tubes to be switched on and controls the plurality of second switching tubes to be switched off, a data line connected with an even-numbered row of sub-pixel units in each column of sub-pixel units on the display panel is the same data line as a data line connected with an odd-numbered row of sub-pixel units, and the display panel presents a first driving mode; the second control signal controls the conduction of the plurality of first switching tubes and the conduction of the plurality of second switching tubes, the data lines connected with the sub-pixel units in the even rows in each column of sub-pixel units on the display panel and the data lines connected with the sub-pixel units in the odd rows are two adjacent data lines, and the display panel is in a second driving mode.
Preferably, the first switching tube and the second switching tube are MOS tubes with opposite channel types.
In another aspect, the present invention further provides a display method applied to the display device, where the method includes: detecting a display picture of a display panel in real time and acquiring target parameters of the display picture; judging the picture type of the display picture based on the target parameter of the display picture; and generating a corresponding control signal according to the determined picture type, and controlling the sub-pixel units in the N column and the even row in the display panel to accept the data transmitted by the data line of one of the N data line and the (N + 1) th data line by the control signal, wherein N is a positive integer.
Preferably, if the target parameter of the display screen is pixel data, determining the screen type of the display screen based on the pixel data includes: decoding the pixel data of the display picture; comparing the decoded pixel data with the pre-stored heavy-load pixel data, and judging whether the gray scale ratio value corresponding to the decoded pixel data is greater than or equal to the gray scale ratio value corresponding to the pre-stored heavy-load pixel data; and when the gray scale ratio value corresponding to the decoded pixel data is smaller than the gray scale ratio value corresponding to the pre-stored heavy-load pixel data, judging that the display picture is a light-load picture.
Preferably, if the target parameter of the display screen is an input current, determining a screen type of the display screen based on the input current includes: acquiring the input current based on the input voltage of the display panel; comparing the acquired input current with a preset current value, and judging whether the acquired input current is smaller than the preset current value; and when the acquired input current is smaller than the preset current value, judging that the display picture is a light-load picture, and when the acquired input current is larger than or equal to the preset current value, judging that the display picture is a heavy-load picture.
Preferably, generating the corresponding control signal according to the determined picture type includes: under the condition that a display picture is judged to be a light-load picture, generating a first control signal, controlling a data line connected with sub-pixel units in even rows and a data line connected with sub-pixel units in odd rows in each column of sub-pixel units on the display panel to be the same data line by the first control signal, and controlling the display panel to show a first driving mode; or under the condition that the display picture is judged to be the reloading picture, generating a second control signal, and controlling the data lines connected with the sub-pixel units in the even rows and the data lines connected with the sub-pixel units in the odd rows in each column of sub-pixel units on the display panel to be two adjacent data lines by the second control signal so as to control the display panel to display a second driving mode.
The invention has the beneficial effects that: the invention discloses a display device and a display method, wherein a plurality of first switch tubes and a plurality of second switch tubes are arranged on a display panel, a first switch tube is arranged between a sub-pixel unit positioned in an even row and an N data line in an N column of sub-pixel units of a plurality of sub-pixel units of the display panel, a second switch tube is arranged between the sub-pixel unit positioned in the even row and the N +1 data line, a target parameter of a display picture of the display panel under a current drive mode is detected in real time by a detection control unit, a corresponding control signal is generated according to a detection result to control the conduction of the first switch tubes or the second switch tubes, and further the switching or the maintenance of the drive mode of the display panel is realized, so that a better drive mode (such as a heavy load mode, the polarity inversion of the pixels is realized on different data lines, and the power consumption requirement is reduced; and in the light load mode, the polarity of the pixels is reversed on the same data line, so that the driving efficiency is improved, the driving time is reduced), the heavy-load picture can be still normally driven under the condition of not replacing a driving chip with super-strong thrust, the display panel can normally display the picture no matter in the heavy-load mode and the light load mode, the picture quality is improved, the system power consumption is reduced, the resource distribution is better, and the customer experience is enhanced.
The channel types of the first switch tubes and the second switch tubes are opposite, so that the on-off control of the switch tubes can be realized by only one control signal, the layout and the circuit structure are optimized, and the cost is reduced.
The pixel data or the input current is used as the detected picture parameter of the display picture, the detection process is simple, and the accuracy is high. Meanwhile, pixel data and input current are used as two optional implementation modes, applicability to different application scenes is improved, and customer experience is enhanced.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent from the following description of the embodiments of the present invention with reference to the accompanying drawings.
Fig. 1 is a schematic view showing a pixel arrangement structure of a display panel in a display device according to the related art;
fig. 2a is a schematic structural diagram of a display device provided according to a first embodiment of the present invention;
fig. 2b shows a schematic structural diagram of a display device provided according to a second embodiment of the present invention;
FIG. 2c is a schematic structural diagram illustrating a display panel in a first driving mode of the display device according to the embodiment of the invention;
FIG. 2d is a schematic structural diagram illustrating a display panel in a second driving mode in the display device according to the embodiment of the invention;
fig. 3 is a schematic structural diagram illustrating a sub-pixel unit in a display device according to an embodiment of the present invention;
FIG. 4 is a flow chart illustrating a display method provided in accordance with an embodiment of the present invention;
FIG. 5 is a flowchart illustrating a method for determining a frame type when the target parameter is pixel data in FIG. 4;
FIG. 6 is a flowchart illustrating a method for determining a frame type when the target parameter is the input current in FIG. 4;
fig. 7a shows an effect diagram of the display panel in the first driving mode when the pixel polarity is inverted;
fig. 7b is a diagram illustrating an effect of the display panel in the second driving mode when the pixel polarity is inverted according to the embodiment of the present invention.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
The present invention will be described in detail below with reference to the accompanying drawings.
Example one
Fig. 2a shows a schematic structural diagram of a display device according to a first embodiment of the present invention, fig. 2c shows a schematic structural diagram of a display panel in a first driving mode in the display device according to the embodiment of the present invention, fig. 2d shows a schematic structural diagram of a display panel in a second driving mode in the display device according to the embodiment of the present invention, and fig. 3 shows a schematic structural diagram of a sub-pixel unit in the display device according to the embodiment of the present invention.
As shown in fig. 2a, in the present embodiment, the display device includes: a display panel 1, a gate driver, a source driver 2, and a timing controller 3.
The display panel 1 includes a plurality of scan lines, a plurality of data lines (including data lines R, G, and B), and a plurality of sub-pixel units. The plurality of scanning lines and the plurality of data lines on the display panel 1 are insulated from each other and crossed to define the plurality of sub-pixel units, the plurality of sub-pixel units are arranged in an array, and each sub-pixel unit P in the plurality of sub-pixel units is electrically connected with one data line and one scanning line.
Further, in this embodiment, the display panel 1 is further provided with a plurality of first switch tubes 11 and a plurality of second switch tubes 12. The plurality of first switching tubes 11 are used for realizing the connection between the sub-pixel units P in the even-numbered rows in each column of sub-pixel units and the first data line, and the plurality of second switching tubes 12 are used for realizing the connection between the sub-pixel units P in the even-numbered rows in each column of sub-pixel units and the second data line, and the first data line is adjacent to the second data line. Specifically, the sub-pixel units in the N-th column of sub-pixel units in the odd-numbered row are all directly connected to the nth data line, a first switching tube k1 is disposed between the sub-pixel unit in the even-numbered row of the sub-pixel units in the N-th column of sub-pixel units in the plurality of sub-pixel units and the nth data line, and a second switching tube k2 is disposed between the sub-pixel unit in the even-numbered row of the sub-pixel units in the N-th column of sub-pixel units and the N +1 th data line, and the even-numbered row of pixels is respectively connected to or disconnected from the adjacent data line through the first switching tube k1 and the second switching tube k 1. Wherein N is a positive integer.
In this embodiment, the switching states of the plurality of first switching tubes 11 and the plurality of second switching tubes 12 are opposite, and preferably, the channel types of the plurality of first switching tubes 11 and the plurality of second switching tubes 12 are opposite. For example, each of the first switching transistors k1 in the first switching transistors 11 is a PMOS transistor, and each of the second switching transistors k2 in the second switching transistors 12 is an NMOS transistor. Further, the control terminals of the first switch tubes 11 and the second switch tubes 12 all receive the same control signal. Layout and circuit structure are optimized, and cost reduction is facilitated.
When the control signal controls the first switch tubes 11 to be turned on and the second switch tubes 12 to be turned off, the driving mode of the display panel is the first driving mode, as shown in fig. 2c, in which each sub-pixel unit P in each row of sub-pixel units is connected to the same data line. That is, the first driving mode of the display panel is a Column (Column) driving mode.
When the control signal controls the first switch tubes 11 to turn off and the second switch tubes 12 to turn on, the driving mode of the display panel is the second driving mode, refer to fig. 2d, in which the data lines connected to the sub-pixel units in the even rows in each column of sub-pixel units and the data lines connected to the sub-pixel units in the odd rows are adjacent to each other. That is, the second driving mode of the display panel is a Z-type driving mode.
Referring to fig. 3, each of the sub-pixel units P of the display panel is connected to one data line DL and one scan line SL, and includes a thin film transistor TFT and a pixel electrode. Wherein the pixel electrode comprises a liquid crystal capacitor C connected in parallelLcAnd a storage capacitor CS. One end of the pixel electrode is connected with the display electrode, and the other end of the pixel electrode is connected with the common electrode. The gate electrode of the TFT is connected with the scan line SL, the first path end is connected with the data line DL, the second path end is connected with the display electrode, and a parasitic capacitance C exists between the gate and drain electrodes of the TFTgd. Generally, an extra capacitor is added to each sub-pixel unit of a middle-sized or large-sized display panel to perform gate-source capacitance compensation of a thin film transistor TFT, so that even if offset occurs during the manufacturing process, mutual compensation can be performed in the left-right direction, and therefore the middle-sized or large-sized display panel adopts a Z-type driving mode. In a small-sized display panel, the storage capacitor C of the sub-pixel unitSGenerally, the load is small, so the vertical driving mode is often used in a small-sized display panel. That is, the power consumption can be reduced by using the Z-frame for a panel with a large load, and the driving efficiency of the pixel can be improved by using the vertical driving mode for a capacitor with a small load.
Furthermore, the embodiment of the invention controls the display panel to display the second driving mode, namely the Z-shaped driving mode to reduce the power consumption and realize the effective driving of the heavy-load picture by the driving chip with normal thrust by detecting and judging the picture type of the display picture, such as judging the heavy-load picture or the light-load picture. And controlling the display panel to present a first driving mode, namely a vertical driving mode, when the light-load picture (corresponding to small load) is judged so as to improve the driving efficiency.
In this embodiment, the gate driver in the display device is connected to the plurality of scan lines in the display panel 1 for providing the gate driving signal to drive the plurality of scan lines.
The source driver 2 is connected to a plurality of data lines in the display panel 1, and is configured to provide data signals to drive the plurality of data lines.
The timing controller 3 is connected to the gate driver and the source driver 2, respectively, and is configured to perform driving control on the gate driver and the source driver 2.
In this embodiment, the display device further includes: and a detection control module. The detection control module is configured to detect a target parameter of a display image of the display panel 1 in real time, and generate a corresponding control signal according to a detection result to control the on/off states of the plurality of first switching tubes 11 and the plurality of second switching tubes 12. For example, the detection control module is configured to detect a target parameter of a display frame of the display panel 1 in a current driving mode in real time, and generate corresponding control signals to the plurality of first switching tubes 11 and the plurality of second switching tubes 12 according to a detection result, so as to control the display panel to display the first driving mode or the second driving mode.
Further, when the detection control module determines that the picture type of the display picture is a light-load picture based on the detected target parameter of the display picture, a first control signal is generated to control the plurality of first switching tubes 11 to be turned on, and control the plurality of second switching tubes 12 to be turned off, so as to control the display panel to display a first driving mode. When the detection control module determines that the picture type of the display picture is a heavy-load picture based on the detected target parameters of the display picture, a second control signal is generated to control the plurality of first switching tubes 11 to be turned off and control the plurality of second switching tubes 12 to be turned on, so that the display panel is controlled to display a second driving mode. By detecting and judging the target parameters of the display images in real time, the corresponding switching or maintaining of the driving modes of the display panel is realized, the heavy-load images can be still normally driven under the condition that the driving chips with ultra-strong thrust are not required to be replaced, the display panel can normally display the images no matter under the heavy-load mode and the light-load mode, the image quality is improved, and the system power consumption is reduced.
Further, in this embodiment, the target parameter of the display screen is pixel data. Referring to fig. 2a, the detection control module includes: a pixel data detecting unit 31 and a control signal generating unit 22.
The pixel data detecting unit 31 is disposed in the timing controller 3, and is configured to detect pixel data of a display frame of the display panel 1 in the current driving mode in real time, and compare the pixel data of the display frame of the display panel 1 in the current driving mode with pre-stored heavy-duty pixel data, so as to generate one of a first feedback signal and a second feedback signal according to a comparison result. Specifically, when the gray scale ratio of the pixel data of the display frame of the display panel 1 in the current driving mode is smaller than the pre-stored gray scale ratio of the heavy-duty pixel data, the display frame in the current driving mode is determined to be a light-load frame, and a first feedback signal is generated; and when the gray scale ratio of the pixel data of the display picture in the current driving mode of the display panel is greater than or equal to the pre-stored gray scale ratio of the heavy-load pixel data, judging that the display picture in the current driving mode is the heavy-load picture, and generating a second feedback signal.
When the pixel data of the display picture in the current driving mode is compared with the pre-stored heavy-load pixel data, the gray scale ratio value corresponding to the two pixel data is compared. Specifically, the pixel data of one frame of display image includes a plurality of driving grayscale voltages for driving a plurality of sub-pixel units on the display panel, and the ratio of the difference values larger than a certain threshold among the obtained plurality of difference values is calculated by obtaining the difference value of the driving grayscale voltages corresponding to any two adjacent sub-pixel units in the plurality of driving grayscale voltages (it can be understood that the larger the difference value is, the larger the polarity inversion degree is required to be performed when the two adjacent sub-pixel units are driven), where the ratio is defined as the grayscale ratio corresponding to the pixel data of the display image of the current frame. It can be understood that the higher the gray scale ratio, the higher the thrust requirement on the driver chip.
For example, assuming that a gray scale ratio of pre-stored heavy-load pixel data is 98%, if the gray scale ratio corresponding to the pixel data of the display picture in the current driving mode is less than 98%, determining that the display picture in the current driving mode is a light-load picture; and if the gray scale ratio value corresponding to the pixel data of the display picture in the current driving mode is greater than or equal to 98%, judging that the display picture in the current driving mode is a heavy-load picture.
The control signal generating unit 22 is disposed in the source driver 2, and configured to receive a first feedback signal to generate a first control signal to the control ends of the plurality of first switching tubes 11 and the control ends of the plurality of second switching tubes 12, or receive a second feedback signal to generate a second control signal to the control ends of the plurality of first switching tubes 11 and the control ends of the plurality of second switching tubes 12.
Wherein, the first control signal and the second control signal have opposite level states. For example, the first control signal is a low level signal and the second control signal is a high level signal. It is understood that the first control signal and the second control signal may be used to represent different level states of the same signal, or may be two independent voltage signals, which is not limited in the present invention.
Specifically, the first control signal controls the plurality of first switch tubes 11 to be turned on, and controls the plurality of second switch tubes 12 to be turned off, so that the data lines connected to the even-numbered rows of sub-pixel units P on the display panel 1 and the data lines connected to the odd-numbered rows of sub-pixel units P are the same data line, that is, the display panel 1 is controlled to exhibit the first driving mode. The second control signal controls the plurality of first switching tubes 11 to turn off, and controls the plurality of second switching tubes 12 to turn on, so that the data lines connected to the even-numbered rows of sub-pixel units P on the display panel 1 and the data lines connected to the odd-numbered rows of sub-pixel units P are adjacent to each other, that is, the display panel 1 is controlled to display the second driving mode.
It should be noted that each feedback signal in this document may be a triggered level signal or a corresponding program code, and the present invention is not limited thereto.
Example two
Referring to fig. 2b, fig. 2b is a schematic structural diagram of a display device according to a second embodiment of the present invention.
The display device disclosed in this embodiment is substantially the same as the first embodiment, and therefore, the same parts are not described in detail. The difference lies in that: in this embodiment, the target parameter of the display frame is an input current, and in this embodiment, the detection control module includes: a current detection unit 21 and a control signal generation unit 22.
The current detecting unit 21 is disposed in the source driver 2, and configured to detect an input current corresponding to an input voltage of the display panel 1 in a current driving mode in real time, and compare the input current corresponding to the input voltage of the display panel 1 in the current driving mode with a preset current value, so as to generate one of a first trigger signal and a second trigger signal according to a comparison result, where the first trigger signal is used to trigger the timing controller 3 to generate a third feedback signal, and the second trigger signal is used to trigger the timing controller 3 to generate a fourth feedback signal. Specifically, when the acquired input current is smaller than the preset current value, it is determined that the display picture in the current driving mode is a light-load picture, and then the timing controller 3 generates a third feedback signal; when the acquired input current is greater than or equal to the preset current value, it is determined that the display frame in the current driving mode is a heavy-duty frame, and then the timing controller 3 generates a fourth feedback signal.
The control signal generating unit 22 is disposed in the source driver 2, and configured to receive a third feedback signal to generate a first control signal to the control terminals of the plurality of first switching tubes 11 and the control terminals of the plurality of second switching tubes 12, or receive a fourth feedback signal to generate a second control signal to the control terminals of the plurality of first switching tubes 11 and the control terminals of the plurality of second switching tubes 12.
Specifically, the first control signal controls the plurality of first switch tubes 11 to be turned on, and controls the plurality of second switch tubes 12 to be turned off, so that the data lines connected to the even-numbered rows of sub-pixel units P on the display panel 1 and the data lines connected to the odd-numbered rows of sub-pixel units P are the same data line, that is, the display panel 1 is controlled to exhibit the first driving mode. The second control signal controls the plurality of first switching tubes 11 to turn off, and controls the plurality of second switching tubes 12 to turn on, so that the data lines connected to the even-numbered rows of sub-pixel units P on the display panel 1 and the data lines connected to the odd-numbered rows of sub-pixel units P are adjacent to each other, that is, the display panel 1 is controlled to display the second driving mode.
EXAMPLE III
Fig. 4 is a flowchart of a display method provided according to an embodiment of the present invention, fig. 5 is a flowchart of a method for determining a picture type when a target parameter is pixel data in fig. 4, fig. 7a is a diagram illustrating an effect of a display panel in a first driving mode when a pixel polarity inversion is performed, and fig. 7b is a diagram illustrating an effect of a display panel in a second driving mode when a pixel polarity inversion is performed.
The display method disclosed in this embodiment can be applied to the display device as shown in the first embodiment.
In this embodiment, as shown in fig. 4, the display method includes performing steps S1 to S4. Specifically, the method comprises the following steps:
in step S1, the display frame of the display panel in the current driving mode is detected in real time, and the target parameters of the display frame are obtained.
Referring to fig. 2a, in order to allocate corresponding display panel driving modes according to display images of different image types to achieve normal driving of the heavy load image without replacing the driving chip with ultra-strong thrust, the display type of the display image in the current driving mode needs to be determined first. In this embodiment, the detection control module detects the target parameters of the display frame of the display panel in the current driving mode in real time.
In step S2, the picture type of the display picture in the current drive mode is determined based on the target parameter of the display picture.
As shown in fig. 5, the determining the picture type of the display picture in the current driving mode based on the target parameter of the display picture further includes: decoding pixel data of a display screen (step S211); comparing the decoded pixel data with the pre-stored heavy-load pixel data, and judging whether the gray scale ratio value corresponding to the decoded pixel data is greater than or equal to the gray scale ratio value corresponding to the pre-stored heavy-load pixel data (step S212); when the gray scale ratio value corresponding to the decoded pixel data is greater than or equal to the gray scale ratio value corresponding to the pre-stored heavy-duty pixel data, it is determined that the display picture in the current driving mode is a heavy-duty picture, and when the gray scale ratio value corresponding to the decoded pixel data is less than the gray scale ratio value corresponding to the pre-stored heavy-duty pixel data, it is determined that the display picture in the current driving mode is a light-duty picture (step S213).
In this embodiment, when the target parameter of the display frame is pixel data, the pixel data detecting unit 31 disposed in the timing controller 3 detects and identifies the pixel data of the display frame of the next frame stored or buffered in real time, and decodes and compares the pixel data of the next frame, so as to determine whether the display frame of the next frame is a heavy-load frame or a light-load frame according to the comparison result, and sends a first feedback signal to the control signal generating unit 22 in the source driver 2 when determining that the display frame is a light-load frame, and sends a second feedback signal to the control signal generating unit 22 in the source driver 2 when determining that the display frame is a heavy-load frame.
In step S3, a corresponding control signal is generated according to the determined picture type, and the display panel is controlled by the control signal to present one of the first driving mode or the second driving mode.
Further, generating a corresponding control signal according to the determined picture type, and controlling the display panel to present one of the first driving mode or the second driving mode by the control signal further comprises: and under the condition that the display picture in the current driving mode is judged to be a light-load picture, generating a first control signal, and controlling the data lines connected with the even-row sub-pixel units and the data lines connected with the odd-row sub-pixel units on the display panel to be the same data lines by the first control signal.
Or under the condition that the display picture in the current driving mode is judged to be the reloading picture, generating a second control signal, and controlling the data lines connected with the sub-pixel units in the even rows and the data lines connected with the sub-pixel units in the odd rows in each column of the sub-pixel units on the display panel by the second control signal to be adjacent to each other.
When the display frame in the current driving mode is determined to be a light-load frame, the control signal generating unit in the source driver 2 receives the corresponding feedback signals (such as the first feedback signal and the third feedback signal) and generates the first control signal correspondingly. When the display frame in the current driving mode is determined to be the reloaded frame, the control signal generating unit in the source driver 2 receives the corresponding feedback signals (such as the second feedback signal and the fourth feedback signal) and generates the second control signal accordingly. The first control signal can control the display panel 1 to display a first driving mode, i.e., a vertical driving mode, and the second control signal can control the display panel 1 to display a second driving mode, i.e., a Z-type driving mode. By switching and outputting the first control signal and the second control signal in the source driver 2, the driving mode of the display panel can be switched or maintained.
It should be noted that each feedback signal in this document may be a triggered level signal or a corresponding program code, and the present invention is not limited thereto.
In step S4, the display panel is driven based on the driving mode presented by the display panel, and pixel data display is realized.
When the display panel 1 exhibits the first driving mode, i.e. the vertical driving mode, as shown in fig. 7a, each sub-pixel unit P on the panel repeats the positive and negative polarity inversion (corresponding to the gray scale transitions of 0 and 127 in the figure) on the same data line. When the display panel 1 exhibits the second driving mode, i.e. the Z-type driving mode, as shown in fig. 7b, each sub-pixel unit P on the panel has the same polarity on the same data line, and the positive and negative polarities are inverted by the adjacent data lines exhibiting different polarities. At this time, the display frame is not overloaded any more, and each sub-pixel unit P displays normally.
For example, if the initial driving mode of the display panel 1 in the first frame is the first driving mode, i.e. the vertical driving mode, as shown in fig. 7a, and it is determined by the detection and recognition that the display frame is a heavy-duty frame, the source driver 2 outputs the second control signal to switch the display panel 1 to the Z-type driving mode in the second frame, and the polarity inversion of the sub-pixel units P is performed synchronously with the switching of the driving modes. If the display frame is determined to be the reloading frame by the detection and recognition, the source driver 2 continues to output the second control signal so that the display panel 1 is maintained in the Z-driving mode during the third frame. The other same principle is adopted.
Example four
Fig. 6 is a flowchart illustrating a method for determining a frame type when the target parameter is the input current in fig. 4.
The display method disclosed in this embodiment can be applied to the display device shown in the second embodiment.
Further, the display method disclosed in this embodiment is basically the same as the third embodiment, and therefore the same parts are not described again. The difference lies in that: in this embodiment, the target parameter of the display frame is an input current, and as shown in fig. 6, the determining the frame type of the display frame in the current driving mode based on the target parameter of the display frame further includes: acquiring an input current based on an input voltage of the display panel (step S221); comparing the obtained input current with a preset current value, and judging whether the obtained input current is smaller than the preset current value (step S222); when the acquired input current is smaller than the preset current value, it is determined that the display screen in the current driving mode is a light-load screen, and when the acquired input current is greater than or equal to the preset current value, it is determined that the display screen in the current driving mode is a heavy-load screen (step S213).
In this embodiment, when the target parameter of the display frame is the input current, the current detecting unit 21 disposed in the source driver 2 obtains the input current corresponding to the input based on the input voltage input to the display panel 1 and the frame load of the display frame of the next frame, and compares the obtained input current with the preset current value through, for example, a comparator, and further determines whether the display frame of the next frame is a heavy-loaded frame or a light-loaded frame according to the comparison result, and feeds back one of the first trigger signal and the second trigger signal generated according to the determination result to the timing controller 3, and the timing controller 3 generates the corresponding feedback signal according to the feedback result to the control signal generating unit 22 in the source driver 2, specifically, sends the third feedback signal to the control signal generating unit 22 in the source driver 2 when the display frame is determined to be a light-loaded frame, the fourth feedback signal is sent to the control signal generating unit 22 in the source driver 2 in the case where it is determined to reload the picture.
In summary, the present invention arranges a plurality of first switch tubes and a plurality of second switch tubes on the display panel, so as to arrange a first switch tube between the sub-pixel units in the even-numbered row and the nth data line in the nth sub-pixel units of the plurality of sub-pixel units of the display panel, and arrange a second switch tube between the sub-pixel units in the even-numbered row and the N +1 th data line, and simultaneously detect the target parameters of the display image in the current driving mode of the display panel in real time by the detection control unit, and generate corresponding control signals according to the detection results to control the conduction of the plurality of first switch tubes or the plurality of second switch tubes, so as to switch or maintain the driving mode of the display panel, so as to select a better driving mode of the display panel (e.g. a heavy-loading image, a light-loading image) for different types of images (e.g. a heavy-loading image, and a light-loading image), and realize the polarity inversion of pixels on different data lines, the power consumption requirement is reduced; and in the light load mode, the polarity of the pixels is reversed on the same data line, so that the driving efficiency is improved, the driving time is reduced), the heavy-load picture can be still normally driven under the condition of not replacing a driving chip with super-strong thrust, the display panel can normally display the picture no matter in the heavy-load mode and the light load mode, the picture quality is improved, the system power consumption is reduced, the resource distribution is better, and the customer experience is enhanced.
It should be noted that, in this document, the contained 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 identical elements in a process, method, article, or apparatus that comprises the element.
Finally, it should be noted that: it should be understood that the above examples are only for clearly illustrating the present invention and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications of the invention may be made without departing from the scope of the invention.
Claims (10)
1. A display device, comprising:
the display panel is provided with a plurality of data lines and a plurality of scanning lines, the data lines and the scanning lines are mutually insulated and crossed to limit and form a plurality of sub-pixel units, and the sub-pixel units are arranged in an array;
a gate driver connected to the plurality of scan lines and providing a gate driving signal to drive the plurality of scan lines;
a source driver connected to the plurality of data lines and providing data signals to drive the plurality of data lines;
a timing controller connected to the gate driver and the source driver for driving and controlling the gate driver and the source driver,
the display panel is also provided with a plurality of first switch tubes and a plurality of second switch tubes, wherein,
the sub-pixel units in the N column and the odd row are directly connected to the N data line,
the first switching tube is electrically connected between the sub-pixel unit positioned in the N-th row and the even-numbered line and the N-th data line, the second switching tube is electrically connected between the sub-pixel unit positioned in the N-th row and the even-numbered line and the (N + 1) -th data line, and N is a positive integer;
the display device further includes:
the detection control module is used for detecting target parameters of a display picture of the display panel in real time, generating corresponding control signals according to detection results, and controlling the on-off states of the plurality of first switch tubes and the plurality of second switch tubes, wherein the on-off states of the first switch tubes and the second switch tubes are opposite.
2. The display device according to claim 1, wherein the target parameter of the display screen is pixel data.
3. The display device according to claim 2, wherein the detection control module comprises:
the pixel data detection unit is arranged in the time schedule controller and is used for detecting pixel data under a current display picture of the display panel in real time and comparing the pixel data with pre-stored heavy-load pixel data so as to generate one of a first feedback signal and a second feedback signal according to a comparison result;
a control signal generating unit disposed in the source driver for receiving the first feedback signal to generate a first control signal or receiving the second feedback signal to generate a second control signal,
wherein the first control signal controls the plurality of first switching tubes to be turned on and controls the plurality of second switching tubes to be turned off, a data line connected to an even-numbered row of sub-pixel units and a data line connected to an odd-numbered row of sub-pixel units in each column of sub-pixel units on the display panel are the same data line, the display panel exhibits a first driving mode,
the second control signal controls the plurality of first switching tubes to be turned off and controls the plurality of second switching tubes to be turned on, the data lines connected with the sub-pixel units in the even rows in each column of sub-pixel units on the display panel and the data lines connected with the sub-pixel units in the odd rows are two adjacent data lines, and the display panel is in a second driving mode.
4. The display device according to claim 1, wherein the target parameter of the display screen is an input current.
5. The display device according to claim 4, wherein the detection control module comprises:
the current detection unit is arranged in the source driver and used for detecting input current corresponding to the input voltage of the display panel in real time and comparing the input current with a preset current value so as to generate one of a first trigger signal and a second trigger signal according to a comparison result, wherein the first trigger signal is used for triggering the time schedule controller to generate a third feedback signal, and the second trigger signal is used for triggering the time schedule controller to generate a fourth feedback signal;
a control signal generating unit disposed in the source driver for receiving the third feedback signal to generate a first control signal or for receiving the fourth feedback signal to generate a second control signal,
the first control signal controls the plurality of first switching tubes to be switched on and controls the plurality of second switching tubes to be switched off, data lines connected with sub-pixel units in even rows in each column of sub-pixel units on the display panel are the same data line with data lines connected with sub-pixel units in odd rows, and the display panel is in a first driving mode;
the second control signal controls the conduction of the plurality of first switching tubes and the conduction of the plurality of second switching tubes, the data lines connected with the sub-pixel units in the even rows in each column of sub-pixel units on the display panel and the data lines connected with the sub-pixel units in the odd rows are two adjacent data lines, and the display panel is in a second driving mode.
6. The display device according to claim 1, wherein the first switching tube and the second switching tube are MOS tubes with opposite channel types.
7. A display method applied to the display device according to any one of claims 1 to 6, the method comprising:
detecting a display picture of a display panel in real time and acquiring target parameters of the display picture;
judging the picture type of the display picture based on the target parameter of the display picture;
and generating a corresponding control signal according to the determined picture type, and controlling the sub-pixel units in the N column and the even row in the display panel to accept the data transmitted by the data line of one of the N data line and the (N + 1) th data line by the control signal, wherein N is a positive integer.
8. The method according to claim 7, wherein the target parameter of the display is pixel data, and determining the frame type of the display based on the pixel data comprises:
decoding the pixel data of the display picture;
comparing the decoded pixel data with the pre-stored heavy-load pixel data, and judging whether the gray scale ratio value corresponding to the decoded pixel data is greater than or equal to the gray scale ratio value corresponding to the pre-stored heavy-load pixel data;
when the gray scale ratio value corresponding to the decoded pixel data is greater than or equal to the gray scale ratio value corresponding to the pre-stored heavy-load pixel data, the display frame is determined to be a heavy-load frame,
and when the gray scale ratio value corresponding to the decoded pixel data is smaller than the gray scale ratio value corresponding to the pre-stored heavy-load pixel data, judging that the display picture is a light-load picture.
9. The method according to claim 7, wherein if the target parameter of the display screen is an input current, determining the screen type of the display screen based on the input current comprises:
acquiring the input current based on the input voltage of the display panel;
comparing the acquired input current with a preset current value, and judging whether the acquired input current is smaller than the preset current value;
when the acquired input current is smaller than the preset current value, the display picture is judged to be a light-load picture,
and when the acquired input current is greater than or equal to the preset current value, judging that the display picture is a heavy-load picture.
10. The display method according to claim 8 or 9, wherein generating the corresponding control signal according to the determined picture type comprises:
under the condition that a display picture is judged to be a light-load picture, generating a first control signal, controlling a data line connected with sub-pixel units in even rows and a data line connected with sub-pixel units in odd rows in each column of sub-pixel units on the display panel to be the same data line by the first control signal, and controlling the display panel to show a first driving mode; or
And under the condition that the display picture is judged to be the reloading picture, generating a second control signal, and controlling the display panel to display a second driving mode by using the second control signal to control the data lines connected with the sub-pixel units in the even rows and the data lines connected with the sub-pixel units in the odd rows in each column of the sub-pixel units on the display panel to be adjacent to each other.
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