CN111009222A - Double-gate TFT panel and driving circuit and driving method thereof - Google Patents
Double-gate TFT panel and driving circuit and driving method thereof Download PDFInfo
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- CN111009222A CN111009222A CN201911236038.8A CN201911236038A CN111009222A CN 111009222 A CN111009222 A CN 111009222A CN 201911236038 A CN201911236038 A CN 201911236038A CN 111009222 A CN111009222 A CN 111009222A
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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
- G09G3/3655—Details of drivers for counter electrodes, e.g. common electrodes for pixel capacitors or supplementary storage capacitors
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Abstract
The invention discloses a double-gate TFT panel, which comprises a plurality of scanning lines, a plurality of data lines vertical to the scanning lines and a pixel array formed by a plurality of pixels, wherein the pixels are electrically connected to the corresponding scanning lines and the corresponding data lines through corresponding TFT switches respectively; two adjacent pixels on the same row do not share the same scanning line, and two adjacent pixels on the same column do not share the same data line. The double-gate TFT panel can realize the display effect of point turning through a column turning driving mode. The invention also discloses a driving circuit and a driving method of the double-gate TFT panel.
Description
Technical Field
The present invention relates to display technologies, and in particular, to a dual-gate TFT panel, and a driving circuit and a driving method thereof.
Background
In the current TFT-LCD industry, if the liquid crystal molecules are always operated at a certain fixed voltage, the liquid crystal molecules will be solidified, resulting in "dc residue" phenomenon. The display voltage driving the liquid crystal to operate cannot be a dc voltage but should be an ac voltage, i.e. the polarity of the display voltage of the inverted pixel.
The polarity inversion of the pixel mainly includes the following four types: frame inversion (the polarities of the display voltages of two adjacent frames are different), column inversion (the polarities of the display voltages of two adjacent columns are different), row inversion (the polarities of the display voltages of two adjacent rows are different), and dot inversion (the polarities of the display voltages of two adjacent pixels are different). Among the above four flipping modes: the dot inversion driving method can achieve the best picture quality. In the dot inversion driving method, the capacitive coupling effect makes the voltage characteristics of the pixels change more uniformly, so that the image display quality is optimal, and therefore, the high-quality display screen is all in dot inversion. However, the power consumption of the dot inversion is also the highest, and the positive and negative charges thereof cancel each other, which means the consumption of electric energy, and the electric energy is converted into heat energy.
Disclosure of Invention
In order to solve the above-mentioned deficiencies of the prior art, the present invention provides a dual-gate TFT panel, a driving circuit and a driving method thereof, which can achieve a dot inversion display effect by a column inversion driving method.
The technical problem to be solved by the invention is realized by the following technical scheme:
a double-gate TFT panel comprises a plurality of scanning lines, a plurality of data lines vertical to the scanning lines and a pixel array formed by a plurality of pixels, wherein the pixels are electrically connected to the corresponding scanning lines and the corresponding data lines through corresponding TFT switches respectively; two adjacent pixels on the same row do not share the same scanning line, and two adjacent pixels on the same column do not share the same data line.
Furthermore, two scanning lines are spaced between two adjacent rows of pixels, and a data line is spaced between two adjacent columns of pixels.
Furthermore, except for the first scanning line and the last scanning line, a plurality of pixels electrically connected to the same scanning line are positioned on two sides of the corresponding scanning line in an up-down alternating mode.
Furthermore, except for the first data line and the last data line, the plurality of pixels electrically connected to the same data line are positioned on two sides of the corresponding data line in a left-right alternating mode.
Further, the TFT switch has a gate terminal, a source terminal and a drain terminal,
the grid end is electrically connected to the corresponding scanning line and used for receiving scanning signals;
the source terminal is electrically connected to the corresponding data line and used for receiving display voltage;
the drain end is electrically connected to the corresponding pixel and used for outputting display voltage;
when the gate terminal receives a scan signal from the corresponding scan line, the source terminal and the drain terminal are internally conducted, and the source terminal can output the display voltage received from the corresponding data line to the corresponding pixel through the drain terminal, so that the corresponding pixel lights up for display.
Furthermore, the display device comprises a driving IC, and all the scanning lines and the data lines are electrically connected to the driving IC.
Furthermore, the display device also comprises a plurality of grid driving lines and a plurality of source driving lines, wherein each scanning line is electrically connected to the driving IC through the corresponding grid driving line, and each data line is electrically connected to the driving IC through the corresponding source driving line.
Furthermore, the display device further comprises a plurality of grid driving lines and a plurality of source driving lines, wherein each scanning line is electrically connected to the driving IC through the corresponding grid driving line, at least one group of data lines share the corresponding source driving line and are electrically connected to the driving IC, two data lines are arranged in one group of data lines sharing the source driving line, and one data line is arranged between the two data lines in the group of data lines.
Further, the driving is performed in a column inversion manner.
Further, during driving, in the same frame, the polarities of the display voltages respectively applied to the two adjacent data lines are opposite, and the polarities of the display voltages respectively applied to the same data line are opposite between the two adjacent frames.
The invention has the following beneficial effects: the double-gate TFT panel, the driving circuit and the driving method thereof ensure that any two adjacent pixels do not share the same scanning line or the same data line by redistributing the connection relation between each pixel and the scanning line and the data line, when in driving, the pixels of each row are alternately opened, the pixels of each column are alternately inverted in polarity, and the display effect of point inversion can be realized by a driving mode of column inversion; furthermore, two data lines with one data line at intervals are used as a group and are electrically connected to the driving IC by sharing the same source driving line, so that the driving IC and a driving algorithm can be shared with the conventional double-gate TFT panel, and the hardware cost and the software cost of technical upgrading are reduced.
Drawings
FIG. 1 is a schematic diagram of a driving circuit of a dual gate TFT panel according to the present invention;
FIG. 2 is a schematic diagram of another driving circuit of the dual-gate TFT panel according to the present invention;
FIG. 3 is a schematic diagram of the polarity distribution of the display voltage in the previous frame of the dual-gate TFT panel according to the present invention;
fig. 4 is a schematic diagram of the polarity distribution of the display voltage in the next frame of the dual-gate TFT panel according to the present invention.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and examples.
Example one
As shown in fig. 1 and 2, a dual gate TFT panel includes a plurality of scan lines 30, a plurality of data lines 20 perpendicular to the scan lines 30, and a pixel 10 array formed by a plurality of pixels 10, wherein the pixels 10 are electrically connected to the corresponding scan lines 30 and data lines 20 through the corresponding TFT switches, respectively; two adjacent pixels 10 on the same row do not share the same scan line 30, and two adjacent pixels 10 on the same column do not share the same data line 20.
As can be seen from fig. 1 and 2, two scan lines 30 are spaced between two adjacent rows of pixels 10, and only one data line 20 is spaced between two adjacent columns of pixels 10, so that except for the first scan line 30 and the last scan line 30, the pixels 10 electrically connected to the same scan line 30 are located at two sides of the corresponding scan line 30 in an up-down alternating manner, and except for the first data line 20 and the last data line 20, the pixels 10 electrically connected to the same data line 20 are located at two sides of the corresponding data line 20 in a left-right alternating manner.
The TFT switch has a gate terminal, a source terminal and a drain terminal, which are internally disconnected from each other in a normal state. The gate terminal of the TFT switch is electrically connected to the corresponding scan line 30 for receiving a scan signal; the source terminal of the TFT switch is electrically connected to the corresponding data line 20 for receiving a display voltage; the drain terminal of the TFT switch is electrically connected to the corresponding pixel 10 for outputting a display voltage; when the gate terminal receives a scan signal from the corresponding scan line 30, the source terminal and the drain terminal of the TFT switch are internally turned on, and the source terminal may output the display voltage received from the corresponding data line 20 to the corresponding pixel 10 through the drain terminal, so that the corresponding pixel 10 lights up for display.
Example two
As shown in fig. 1 and 2, the driving circuit of the dual gate TFT panel according to the first embodiment includes a driving IC 40, and all the scan lines 30 and the data lines 20 are electrically connected to the driving IC 40; and a plurality of gate driving lines 50 and a plurality of source driving lines 60, each of the scan lines 30 being electrically connected to the driving IC 40 through a corresponding gate driving line 50.
In a driving circuit, as shown in fig. 1, each data line 20 is electrically connected to the driving IC 40 through a corresponding source driving line 60; in another driving circuit, in order to reduce the number of source driving lines 60 and reduce the hardware cost of the driving IC 40, as shown in fig. 2, at least one group of data lines 20 shares the corresponding source driving line 60 and is electrically connected to the driving IC 40, two data lines 20 are provided in one group of data lines 20 sharing the source driving line 60, and one data line 20 is spaced between two data lines 20 in the group of data lines 20.
EXAMPLE III
The driving method of the dual-gate TFT panel according to the first embodiment may be applied to the driving circuit according to the second embodiment, and the driving is performed in a column inversion manner.
Specifically, a scanning voltage is sequentially applied to each scanning line 30 to sequentially turn on the TFT switches of each row, and a corresponding display voltage is applied to all the scanning lines 30 within the turn-on time of the TFT switches of each row to refresh the picture content row by row; in the same frame, the polarities of the display voltages respectively applied to the two adjacent data lines 20 are opposite (in the same frame, the polarities of the display voltages respectively applied to the same data line 20 when different rows are refreshed are the same), the polarities of the display voltages respectively applied to the same data line 20 between the two adjacent frames are opposite, and if the polarity condition of the display voltage of each pixel 10 of the previous frame is shown in fig. 3, the polarity condition of the display voltage of each pixel 10 of the next frame is shown in fig. 4.
The above-mentioned embodiments only express the embodiments of the present invention, and the description is more specific and detailed, but not understood as the limitation of the patent scope of the present invention, but all the technical solutions obtained by using the equivalent substitution or the equivalent transformation should fall within the protection scope of the present invention.
Claims (10)
1. A double-gate TFT panel comprises a plurality of scanning lines, a plurality of data lines vertical to the scanning lines and a pixel array formed by a plurality of pixels, wherein the pixels are electrically connected to the corresponding scanning lines and the corresponding data lines through corresponding TFT switches respectively; the pixel structure is characterized in that two adjacent pixels on the same row do not share the same scanning line, and two adjacent pixels on the same column do not share the same data line.
2. The dual gate TFT panel as recited in claim 1, wherein two scan lines are spaced between two adjacent rows of pixels and one data line is spaced between two adjacent columns of pixels.
3. The dual-gate TFT panel as claimed in claim 2, wherein the plurality of pixels electrically connected to the same scan line are disposed on both sides of the corresponding scan line in an up-down alternating manner except for the first scan line and the last scan line.
4. The dual gate TFT panel as claimed in claim 2 or 3, wherein the plurality of pixels electrically connected to the same data line are located on both sides of the corresponding data line in a left-right alternating manner except for the first data line and the last data line.
5. The dual gate TFT panel of claim 1, wherein the TFT switch has a gate terminal, a source terminal, and a drain terminal,
the grid end is electrically connected to the corresponding scanning line and used for receiving scanning signals;
the source terminal is electrically connected to the corresponding data line and used for receiving display voltage;
the drain end is electrically connected to the corresponding pixel and used for outputting display voltage;
when the gate terminal receives a scan signal from the corresponding scan line, the source terminal and the drain terminal are internally conducted, and the source terminal can output the display voltage received from the corresponding data line to the corresponding pixel through the drain terminal, so that the corresponding pixel lights up for display.
6. The driving circuit of a dual gate TFT panel as claimed in any one of claims 1 to 5, comprising a driving IC to which all scan lines and data lines are electrically connected.
7. The driving circuit of claim 6, further comprising a plurality of gate driving lines and a plurality of source driving lines, each scanning line being electrically connected to the driving IC through a corresponding gate driving line, and each data line being electrically connected to the driving IC through a corresponding source driving line.
8. The driving circuit of claim 6, further comprising a plurality of gate driving lines and a plurality of source driving lines, each scanning line being electrically connected to the driving IC through a corresponding gate driving line, at least one group of data lines being electrically connected to the driving IC with the corresponding source driving line being shared, two data lines being included in a group of data lines sharing the source driving line and one data line being spaced between two data lines included in the group of data lines.
9. A method of driving a dual gate TFT panel as claimed in any one of claims 1 to 5, wherein the driving is performed in a column inversion manner.
10. The driving method of the dual-gate TFT panel as claimed in claim 9, wherein during driving, the polarities of the display voltages applied to two adjacent data lines in the same frame are opposite, and the polarities of the display voltages applied to the same data line between two adjacent frames are opposite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911236038.8A CN111009222A (en) | 2019-12-05 | 2019-12-05 | Double-gate TFT panel and driving circuit and driving method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911236038.8A CN111009222A (en) | 2019-12-05 | 2019-12-05 | Double-gate TFT panel and driving circuit and driving method thereof |
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| Publication Number | Publication Date |
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| CN111009222A true CN111009222A (en) | 2020-04-14 |
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| CN201911236038.8A Pending CN111009222A (en) | 2019-12-05 | 2019-12-05 | Double-gate TFT panel and driving circuit and driving method thereof |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012068599A (en) * | 2010-09-27 | 2012-04-05 | Casio Comput Co Ltd | Liquid crystal display device |
| CN102542965A (en) * | 2010-12-09 | 2012-07-04 | 联咏科技股份有限公司 | Drive device and display panel |
| CN106098708A (en) * | 2014-06-05 | 2016-11-09 | 厦门天马微电子有限公司 | A kind of thin-film transistor array base-plate, display floater and display device |
-
2019
- 2019-12-05 CN CN201911236038.8A patent/CN111009222A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012068599A (en) * | 2010-09-27 | 2012-04-05 | Casio Comput Co Ltd | Liquid crystal display device |
| CN102542965A (en) * | 2010-12-09 | 2012-07-04 | 联咏科技股份有限公司 | Drive device and display panel |
| CN106098708A (en) * | 2014-06-05 | 2016-11-09 | 厦门天马微电子有限公司 | A kind of thin-film transistor array base-plate, display floater and display device |
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Application publication date: 20200414 |
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