CN113362750A - Array substrate, display device and array substrate driving method - Google Patents
Array substrate, display device and array substrate driving method Download PDFInfo
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- CN113362750A CN113362750A CN202110605876.9A CN202110605876A CN113362750A CN 113362750 A CN113362750 A CN 113362750A CN 202110605876 A CN202110605876 A CN 202110605876A CN 113362750 A CN113362750 A CN 113362750A
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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
- G09G3/2007—Display of intermediate tones
- G09G3/2074—Display of intermediate tones using sub-pixels
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Abstract
The invention discloses an array substrate, display equipment and an array substrate driving method, and relates to the technical field of display control. The array substrate of the invention comprises: a plurality of pairs of scan lines, each pair of scan lines including a first scan line and a second scan line; the pixel array comprises a plurality of pixels which are arranged in an array, wherein each row of pixels is arranged between a first scanning line and a second scanning line, each row of pixels comprises a first pixel and a second pixel, the first pixels are connected with the corresponding first scanning lines, and the second pixels are connected with the corresponding second scanning lines; and the first isolation lines are arranged between the second scanning lines and the first pixels corresponding to the first scanning lines. The isolation lines can play a role in shielding an electric field, so that the second scanning lines are prevented from generating coupling interference on the first pixels, voltage fluctuation of the first pixels is avoided, the generation of cross striations is reduced, and the display quality is improved.
Description
Technical Field
The invention relates to the technical field of display control, in particular to an array substrate, display equipment and an array substrate driving method.
Background
In display technology, a DRD (dual rate drive) design capable of halving the number of data lines arranged in a longitudinally extending manner is increasingly used. However, due to the limitation of the pixel architecture, horizontal stripes are easy to appear on the screen display, and the display quality is reduced. Therefore, how to improve the display quality of the DRD pixel structure is an urgent technical problem to be solved.
The above is only for the purpose of assisting understanding of the technical aspects of the present invention, and does not represent an admission that the above is prior art.
Disclosure of Invention
The invention mainly aims to provide an array substrate, display equipment and an array substrate driving method, and aims to solve the technical problem that in the prior art, the display quality of a DRD pixel structure is low.
In order to achieve the above object, the present invention provides an array substrate, including:
a plurality of pairs of scan lines, each pair of scan lines including a first scan line and a second scan line;
the pixel array comprises a plurality of pixels which are arranged in an array, wherein each row of pixels is arranged between a first scanning line and a second scanning line, each row of pixels comprises a first pixel and a second pixel, the first pixels are connected with the corresponding first scanning lines, and the second pixels are connected with the corresponding second scanning lines;
and the first isolation lines are arranged between the second scanning lines and the first pixels corresponding to the first scanning lines.
Optionally, the array substrate further includes:
and the second isolation lines are arranged between two adjacent pairs of scanning lines.
Optionally, the first pixels include first color pixels and third color pixels, and the second pixels include second color pixels and third color pixels.
Optionally, in each row of pixels, the colors of any adjacent three pixels are different from each other.
Optionally, the third color pixel is a blue pixel.
Optionally, the volume of the thin film transistor corresponding to the third color pixel is larger than the volume of the thin film transistor corresponding to the first color pixel or the volume of the thin film transistor corresponding to the second color pixel.
Optionally, in each row of pixels, two adjacent first pixels and two adjacent second pixels share one data line; adjacent data lines use drive signals of opposite polarity.
In order to achieve the above object, the present invention further provides a display device, which includes a driving circuit, a scanning circuit and a display panel, where the display panel includes the array substrate as described above, and the driving circuit and the scanning circuit are both connected to the display panel for controlling the array substrate.
In order to achieve the above object, the present invention further provides an array substrate driving method, where the array substrate driving method is applied to the display device, where the display device includes a plurality of pixels arranged in an array, a plurality of pairs of scan lines, and a plurality of first isolation lines, and the array substrate driving method includes:
inputting scanning signals to each pair of scanning lines to drive the corresponding first pixels through the first scanning lines, and driving the corresponding second pixels through the second scanning lines after the first pixels are kept driven for a preset time;
when the second scanning line drives the corresponding second pixel, the direct current signal is input to the first isolation line corresponding to the second scanning line so as to eliminate the coupling interference of the second scanning line to the first pixel.
Optionally, the display device further includes a second isolation line disposed between each pair of scan lines, and after driving the corresponding first pixel by the first scan line, the display device further includes:
when the corresponding first pixel is driven by the first scanning line, a direct current signal is input to the second isolation line corresponding to the first scanning line so as to eliminate the coupling interference of the first scanning line to a pair of scanning lines.
In the present invention, the array substrate includes: a plurality of pairs of scan lines, each pair of scan lines including a first scan line and a second scan line; the pixel array comprises a plurality of pixels which are arranged in an array, wherein each row of pixels is arranged between a first scanning line and a second scanning line, each row of pixels comprises a first pixel and a second pixel, the first pixels are connected with the corresponding first scanning lines, and the second pixels are connected with the corresponding second scanning lines; and the first isolation lines are arranged between the second scanning lines and the first pixels corresponding to the first scanning lines. The isolation lines can play a role in shielding an electric field, so that the second scanning lines are prevented from generating coupling interference on the first pixels, voltage fluctuation of the first pixels is avoided, the generation of cross striations is reduced, and the display quality is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic view of a pixel structure of an array substrate according to a first embodiment of the invention;
FIG. 2 is a waveform diagram of an embodiment of a driving signal according to the present invention;
FIG. 3 is a schematic view of a pixel structure of a second embodiment of an array substrate according to the invention;
FIG. 4 is a schematic structural diagram of a display device according to an embodiment of the present invention;
fig. 5 is a schematic flow chart illustrating an array substrate driving method according to an embodiment of the invention.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| G1 | A |
40 | Second isolation line |
| G2 | The |
50 | |
| 10 | |
60 | |
| 20 | |
70 | |
| 30 | First isolation line |
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are 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 at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should be considered to be absent and not within the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a schematic view of a pixel structure of an array substrate according to a first embodiment of the invention.
In a first embodiment, an array substrate includes: a plurality of pairs of scan lines, each pair of scan lines including a first scan line G1 and a second scan line G2. A plurality of pixels arranged in an array, each row of pixels being disposed between a first scanning line G1 and a second scanning line G2, each row of pixels including a first pixel 10 and a second pixel 20, the first pixel 10 being connected to the corresponding first scanning line G1, the second pixel 20 being connected to the corresponding second scanning line G2; and a plurality of first isolation lines 30, the first isolation lines 30 being disposed between the second scan lines G2 and the first pixels 10 corresponding to the first scan lines G1.
Fig. 1 shows a DRD pixel structure, in which two adjacent pixels in each row of pixels are driven by the same data line, and each row of pixels is driven by a pair of scan lines; the first pixels 10 are driven by a first scan line G1, and the second pixels 20 are driven by a second scan line G2, each row of pixels includes a plurality of first pixels 10 and a plurality of second pixels 20. The first scan line G1 charges the first pixel 10 connected corresponding thereto, and then the second scan line G2 charges the second pixel 20 connected corresponding thereto. The pixel is in a working state after being driven, and the voltage of the pixel fluctuates when being coupled by other voltages, so that the brightness difference is formed, and the cross striations are generated.
Referring to fig. 2, fig. 2 is a waveform diagram of a driving signal according to an embodiment of the invention. As can be seen from fig. 1, each row of pixels is coupled by the corresponding first scanning line G1 and second scanning line G2. As shown in fig. 2, the driving voltage applied to the first scanning line G1 is first raised to drive the first pixel 10; after the first pixel 10 is maintained for a certain period of time, the driving voltage applied to the second scan line G2 is increased again to drive the second pixel 20. The driving voltage on the first scan line G1 drops before the driving voltage on the second scan line G2, and in the time t phase, the first scan line G1 has already charged the first pixel 10, and the first pixel 10 starts to fall back, but since the second scan line G2 is charging the second pixel 20, the first pixel 10 is interfered by the coupling of the second scan line G2, and the voltage slightly rises compared with the fall-back voltage, so that the voltage fluctuation occurs.
In the present embodiment, the first isolation line 30 is disposed between the second scan line G2 and the first pixel 10 corresponding to the first scan line G1, i.e., between the second scan line G2 and the row of pixels where the driven second pixel 20 is located. The first isolation line 30 is used for receiving a dc voltage signal, and the second pixel 20 is being charged at the second scan line G2, so that the first pixel 10 can be prevented from being interfered by the coupling of the second scan line G2 due to the shielding effect of the first isolation line 30. In a specific implementation, the first isolation lines 30 may be made in an ITO process, and the first isolation lines 30 and the pixels may be disposed at the same layer by modifying an exposure template.
In order to better shield the coupling interference, in this embodiment, the array substrate further includes: and a plurality of second isolation lines 40, the second isolation lines 40 being disposed between two adjacent pairs of the scan lines. As shown in fig. 1, the second isolation line 40 is disposed between the scan lines respectively located in the two pairs of scan lines. By inputting the dc voltage signal to the second isolation line 40, the scan line may be shielded from generating coupling interference with the second scan line G2 of the pair of scan lines above.
In a first embodiment, an array substrate includes: a plurality of pairs of scan lines, each pair of scan lines including a first scan line G1 and a second scan line G2. A plurality of pixels arranged in an array, each row of pixels being disposed between a first scanning line G1 and a second scanning line G2, each row of pixels including a first pixel 10 and a second pixel 20, the first pixel 10 being connected to the corresponding first scanning line G1, the second pixel 20 being connected to the corresponding second scanning line G2; and a plurality of first isolation lines 30, the first isolation lines 30 being disposed between the second scan lines G2 and the first pixels 10 corresponding to the first scan lines G1. The isolation lines can play a role in shielding an electric field, so that the second scanning line G2 is prevented from generating coupling interference on the first pixel 10, voltage fluctuation of the first pixel 10 is avoided, the generation of cross striations is reduced, and the display quality is improved.
Referring to fig. 3, fig. 3 is a schematic view of a pixel structure of an array substrate according to a second embodiment of the invention. Based on the first embodiment, the invention provides a second embodiment of the array substrate.
In order to further improve the display quality, in the second embodiment, the first pixels 10 include first color pixels and third color pixels, and the second pixels 20 include second color pixels and third color pixels.
It is understood that the pixel colors are generally divided into three colors, red, green, and blue. In the present embodiment, the first pixel 10 and the second pixel 20 both include two colors, and thus, of the three colors, the first color pixel is driven by the first scan line G1, the second color pixel is driven by the second scan line G2, and the third color pixel is driven by the first scan line G1 and the second scan line G2.
In a specific implementation, two adjacent first pixels 10 and two adjacent second pixels 20 in each row of pixels share one data line; adjacent data lines adopt driving signals with opposite polarities; by inputting scan pulse signals to the first scan line G1 and the second scan line G2, respectively, and by inputting data signals to the data lines; here, the first pixel 10 is driven to be turned on by the first scan line G1, and the second pixel 20 is driven to be turned on by the second scan line G2 after the first pixel 10 is turned on for a certain time, so that the second pixel 20 can be precharged when the first pixel 10 is charged. Since the first color pixels are driven by the first scanning line G1 and the second color pixels are driven by the second scanning line G2, the first color pixels in each row of pixels are not precharged at the same time, and the second color pixels are precharged at the same time, so that the vertical bright and dark stripes are further reduced and the display quality is improved by reducing the difference of the charging rates. Of course, the first color pixels in each row of pixels may be pre-charged and the second color pixels may not be pre-charged according to different polarity settings of the data signals, which is not limited in this embodiment.
In order to reduce the display quality degradation caused by the third color pixel due to the difference in the charging rate of the third color pixel, the third color pixel may be set to a color having a low human eye recognition capability, such as a blue pixel. At this time, the first color pixel may be a red pixel, and the second color pixel may be a green pixel; of course, the first color pixel may be a green pixel and the second color pixel may be a red pixel. Therefore, the charging rates of the red pixel unit and the green pixel unit which have high distinguishing capability for human eyes are consistent, and even under the condition that the charging rates of the pixel units in the blue pixel unit are different, bright and dark stripes which can be recognized by human eyes can not appear.
Further, by uniformly setting the color pixels, the display picture can be kept consistent as a whole, and specifically, the colors of any adjacent three pixels in each row of pixels are different from each other. That is, the positions of the color pixels in each row of pixels may be arranged in an arrangement of red, green, and blue, of course; the arrangement order may also be set according to user requirements, which is not limited in this embodiment.
It is understood that the pixel includes a thin film transistor and a liquid crystal capacitor, and the charging rate of the thin film transistor is higher as the thin film transistor is larger in volume, and thus, the charging rate difference of the pixel can be reduced by increasing the volume of the thin film transistor.
In this embodiment, the volume of the thin film transistor corresponding to the third color pixel is larger than the volume of the thin film transistor corresponding to the first color pixel or the volume of the thin film transistor corresponding to the second color pixel. Experiments show that the charging rate of the third color pixel can be more than 99.9% by independently increasing the volume of the third color pixel thin film transistor, so that the difference of the charging rates is further reduced, and the problem of bright and dark stripes is avoided.
In the second embodiment, the first color pixel is driven by the first scan line G1, and the second color pixel is driven by the second scan line G2, so that no difference in charging rates of the first color pixel and the second color pixel is ensured, and the problem of bright and dark stripes caused by the difference in charging rates is avoided. Meanwhile, the third color pixel can be set as a blue pixel with low human eye recognition capability, so that bright and dark stripes observed by a user are reduced, the volume of a thin film transistor of the third color pixel can be increased, the charging rate is improved, and the display quality is improved.
Referring to fig. 4, fig. 4 is a schematic structural diagram of an embodiment of a display device according to the present invention, in order to achieve the above object, the present invention further provides a display device, where the display device includes a driving circuit 50, a scanning circuit 60, and a display panel 70, the display panel 70 includes the array substrate as described above, and the driving circuit 50 and the scanning circuit 60 are both connected to the display panel 70 for controlling the array substrate.
The specific structure of the array substrate refers to the above embodiments, and since the display device adopts all technical solutions of all the above embodiments, at least all the beneficial effects brought by the technical solutions of the above embodiments are achieved, and no further description is given here.
Referring to fig. 5, fig. 5 is a schematic flow chart of an embodiment of a driving method of an array substrate according to the invention. In order to achieve the above object, the present invention further provides an array substrate driving method, where the array substrate driving method is applied to the display device, where the display device includes a plurality of pixels arranged in an array, a plurality of pairs of scan lines, and a plurality of first isolation lines, and the array substrate driving method includes:
step S10: and inputting scanning signals to each pair of scanning lines to drive the corresponding first pixels through the first scanning lines, and driving the corresponding second pixels through the second scanning lines after the first pixels are kept driven for a preset time.
Step S20: when the second scanning line drives the corresponding second pixel, the direct current signal is input to the first isolation line corresponding to the second scanning line so as to eliminate the coupling interference of the second scanning line to the first pixel.
The array substrate driving method is mainly used for a DRD pixel structure, two adjacent pixels in each row of pixels are driven by the same data line, and each row of pixels is driven by a pair of scanning lines; the first pixels 10 are driven by a first scan line G1, and the second pixels 20 are driven by a second scan line G2, each row of pixels includes a plurality of first pixels 10 and a plurality of second pixels 20. The first scan line G1 charges the first pixel 10 connected corresponding thereto, and then the second scan line G2 charges the second pixel 20 connected corresponding thereto. The pixel is in a working state after being driven, and the voltage of the pixel fluctuates when being coupled by other voltages, so that the brightness difference is formed, and the cross striations are generated.
Because each row of pixels is coupled by the corresponding first scanning line G1 and second scanning line G2. The driving voltage applied to the first scanning line G1 is first raised to drive the first pixel 10; after the first pixel 10 is maintained for a certain period of time, the driving voltage applied to the second scan line G2 is increased again to drive the second pixel 20. The driving voltage on the first scan line G1 drops before the driving voltage on the second scan line G2, and in the time t phase, the first scan line G1 has already charged the first pixel 10, and the first pixel 10 starts to fall back, but since the second scan line G2 is charging the second pixel 20, the first pixel 10 is interfered by the coupling of the second scan line G2, and the voltage slightly rises compared with the fall-back voltage, so that the voltage fluctuation occurs.
In the present embodiment, the first isolation line 30 is disposed between the second scan line G2 and the first pixel 10 corresponding to the first scan line G1, i.e., between the second scan line G2 and the row of pixels where the driven second pixel 20 is located. The first isolation line 30 is used for receiving a dc voltage signal, and the second pixel 20 is being charged at the second scan line G2, so that the first pixel 10 can be prevented from being interfered by the coupling of the second scan line G2 due to the shielding effect of the first isolation line 30.
In order to further shield the coupling interference display device, the display device further includes a second isolation line disposed between each pair of scan lines, and after driving the corresponding first pixel by the first scan line, the display device further includes: when the corresponding first pixel is driven by the first scanning line, a direct current signal is input to the second isolation line corresponding to the first scanning line so as to eliminate the coupling interference of the first scanning line to a pair of scanning lines. By inputting the dc voltage signal to the second isolation line 40, the scan line may be shielded from generating coupling interference with the second scan line G2 of the pair of scan lines above.
In this embodiment, a scan signal is input to each pair of scan lines to drive a corresponding first pixel through the first scan line, and after the first pixel is kept driven for a preset time, a corresponding second pixel is driven through the second scan line. When the second scanning line drives the corresponding second pixel, the direct current signal is input to the first isolation line corresponding to the second scanning line so as to eliminate the coupling interference of the second scanning line to the first pixel. The isolation lines can play a role in shielding an electric field, so that the second scanning lines are prevented from generating coupling interference on the first pixels, voltage fluctuation of the first pixels is avoided, the generation of cross striations is reduced, and the display quality is improved.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system 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 system. The term "comprising", without further limitation, means that the element so defined is not excluded from the group of processes, methods, articles, or systems that include the element. The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. An array substrate comprises a plurality of pairs of scanning lines and a plurality of pixels arranged in an array, wherein each pair of scanning lines comprises a first scanning line and a second scanning line; it is characterized in that the preparation method is characterized in that,
each row of pixels is arranged between the first scanning lines and the second scanning lines, each row of pixels comprises first pixels and second pixels, the first pixels are connected with the corresponding first scanning lines, and the second pixels are connected with the corresponding second scanning lines;
the array substrate further includes: the first isolation lines are arranged between the second scanning lines and the first pixels corresponding to the first scanning lines.
2. The array substrate of claim 1, wherein the array substrate further comprises:
and the second isolation lines are arranged between two adjacent pairs of scanning lines.
3. The array substrate of claim 1 or 2, wherein the first pixels comprise first color pixels and third color pixels, and the second pixels comprise second color pixels and third color pixels.
4. The array substrate of claim 3, wherein in each row of pixels, any adjacent three pixels are different colors from each other.
5. The array substrate of claim 3, wherein the third color pixel is a blue pixel.
6. The array substrate of claim 5, wherein a volume of the thin film transistor corresponding to the third color pixel is larger than a volume of the thin film transistor corresponding to the first color pixel or a volume of the thin film transistor corresponding to the second color pixel.
7. The array substrate of claim 1 or 2, wherein in each row of pixels, two adjacent first pixels and two adjacent second pixels share one data line; and the adjacent data lines adopt driving signals with opposite polarities.
8. A display device comprising a driving circuit, a scanning circuit, and a display panel comprising the array substrate according to any one of claims 1 to 7, wherein the driving circuit and the scanning circuit are connected to the display panel for controlling the array substrate.
9. An array substrate driving method applied to the display device according to claim 8, wherein the display device includes a plurality of pixels arranged in an array, a plurality of pairs of scan lines, and a plurality of first isolation lines, and the array substrate driving method includes:
inputting scanning signals to each pair of scanning lines to drive corresponding first pixels through the first scanning lines, and driving corresponding second pixels through the second scanning lines after the first pixels are kept driven for a preset time;
when a second scanning line drives a corresponding second pixel, a direct current signal is input to a first isolation line corresponding to the second scanning line so as to eliminate the coupling interference of the second scanning line to the first pixel.
10. The array substrate driving method of claim 9, wherein the display device further includes second isolation lines disposed between each pair of the scan lines, and after the corresponding first pixel is driven by the first scan line, further comprising:
when the corresponding first pixel is driven by the first scanning line, a direct current signal is input to the second isolation line corresponding to the first scanning line, so that the coupling interference of the first scanning line to a pair of scanning lines on the first scanning line is eliminated.
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