CN111429857A - Pixel driving circuit of display panel - Google Patents
Pixel driving circuit of display panel Download PDFInfo
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- CN111429857A CN111429857A CN202010277153.6A CN202010277153A CN111429857A CN 111429857 A CN111429857 A CN 111429857A CN 202010277153 A CN202010277153 A CN 202010277153A CN 111429857 A CN111429857 A CN 111429857A
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- pixel
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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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- Crystallography & Structural Chemistry (AREA)
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- Theoretical Computer Science (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The present invention provides a pixel driving circuit of a display panel, the pixel driving circuit including: a pixel array composed of a plurality of pixel units arranged in an array; a plurality of grid drive lines and a plurality of data drive lines for controlling the picture pixels presented by each pixel unit; at least one row of dummy pixel units is arranged at the outer side of the pixel unit row at the outermost side of the edge, and the dummy pixel units do not have the function of displaying picture pixels; the number of the columns of the pixel units controlled by the first grid drive line of the pixel unit column at least one control edge outermost side is different from the number of the columns of the pixel units controlled by the second grid drive line of the pixel unit column at a non-edge outermost side.
Description
Technical Field
The invention relates to the technical field of display panels, in particular to a pixel driving circuit structure of a display panel capable of improving the defect of vertical bright and dark lines at the edge.
Background
Liquid Crystal Display panels (L liquid Crystal Display panel, L CD panel) have become popular products, and the liquid Crystal Display panel includes a plurality of pixel units (pixels) arranged in a matrix, each pixel unit includes sub-pixels (sub-pixels) of three colors, Red (Red, R), Green (Green, G) and Blue (Blue, B), and the sub-pixels are applied with voltages by a matrix control circuit to the corresponding sub-pixels, so that the corresponding sub-pixels can present required colors to Display required pictures on the liquid Crystal Display panel.
In the pixel driving circuit of the liquid crystal display panel, the pixel columns at the edge of the display Area (Active Area) are easy to cause the display defects of the vertical bright and dark lines at the edge of the display Area (Active Area) caused by the non-uniform charging of the pixels at different columns because of the large impedance difference, such as: the impedance difference is caused by the difference of the trace length or shape of different pixel columns. Taking a 28-inch display panel as an example, the impedance difference between the edge vertical rows and the other rows is about 25%, and the larger the size of the display panel is, the larger the impedance difference is, so that the display defects of the edge vertical bright and dark lines will be more obvious.
Therefore, it is necessary to provide a new pixel driving circuit structure of a display panel to improve the display defect problem of the edge vertical bright and dark lines.
Disclosure of Invention
The invention provides a pixel driving circuit structure of a display panel, which can solve the problem of vertical bright and dark lines at the edge.
The technical scheme provided by the invention is as follows:
an embodiment of the present invention provides a pixel driving circuit structure of a display panel, the pixel driving circuit including:
a pixel array composed of a plurality of pixel units arranged in an array;
a plurality of grid drive lines and a plurality of data drive lines for controlling the picture pixels presented by each pixel unit;
at least one row of dummy pixel units is arranged at the outer side of the pixel unit row at the outermost side of the edge, and the dummy pixel units do not have the function of displaying picture pixels.
In an embodiment of the present invention, the number of columns of pixel units controlled by the first gate driving line of at least one pixel unit column with the outermost control edge is different from the number of columns of pixel units controlled by the second gate driving line of the pixel unit column with the outermost control edge, and the number of columns of pixel units controlled by the first gate driving line is less than the number of columns of pixel units controlled by the second gate driving line.
In an embodiment of the invention, the number of rows of pixel units controlled by the second gate driving line is twice the number of rows of pixel units controlled by the first gate driving line.
In an embodiment of the present invention, the first gate driving line includes the gate driving lines at the leftmost side and the rightmost side.
In an embodiment of the present invention, the dummy pixel unit includes dummy pixel units respectively disposed outside the pixel unit columns at the leftmost edge and the rightmost edge.
In an embodiment of the invention, each column of pixel units of the pixel array is a pixel unit displaying the same color.
In an embodiment of the present invention, the colors displayed by the pixel units of two adjacent columns of pixel units of the pixel array are different.
In an embodiment of the invention, the colors displayed by the pixel units in different columns are sequentially arranged according to a fixed sequence.
In the embodiment of the invention, the dummy pixel unit and the pixel units are manufactured in the same exposure and development process by the same photomask.
In the embodiment of the invention, the voltage values or pulse widths of the driving signals on the plurality of data driving lines are the same.
The embodiment of the invention has the following beneficial effects: the pixel driving circuit of the display panel provided by the embodiment of the invention is additionally provided with a row of dummy pixel units outside the pixel unit row at the outermost edge of the display panel, so as to compensate and adjust the impedance difference between the pixel unit row at the outermost edge of the display panel and the adjacent pixel unit row, so that the impedance between the pixel unit row at the outermost edge of the display panel and the adjacent pixel unit row is equal or similar, and the display defect of the edge vertical bright and dark lines, which is generated due to the impedance difference between the pixel units of different rows, is effectively improved. Moreover, in the embodiment, the influence of the added dummy pixel units to the frame width of the whole display area is very little and can be ignored, and the added dummy pixel units and the plurality of pixel unit rows with the common display function can be manufactured in the same exposure and development process by using the same photomask, so that the manufacturing cost of the pixel driving circuit of the display panel is not increased.
Drawings
In order to illustrate the embodiments or the technical solutions in the prior art more clearly, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for a person skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic diagram of a pixel driving circuit of a display panel in the prior art.
Fig. 2 is a schematic structural diagram of a pixel driving circuit of a display panel according to an embodiment of the invention.
Detailed Description
Reference in the detailed description to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the invention. The appearances of the same phrases in various places in the specification are not necessarily limited to the same embodiment, but are to be construed as independent or alternative embodiments to other embodiments. In light of the disclosure of the embodiments provided by the present invention, it should be understood by those skilled in the art that the embodiments described in the present invention can have other combinations or variations consistent with the concept of the present invention.
The following description of the embodiments refers to the accompanying drawings for illustrating the specific embodiments in which the invention may be practiced. Directional phrases referred to herein, such as [ upper ], [ lower ], [ front ], [ rear ], [ left ], [ right ], [ inner ], [ outer ], [ side ], [ vertical ], [ horizontal ], etc., refer only to the directions of the attached drawings. Accordingly, the directional terms used are used for explanation and understanding of the present invention, and are not used for limiting the present invention.
Fig. 2 is a schematic diagram of a pixel driving circuit of a display panel according to an embodiment of the present invention, as shown in fig. 2, the display panel 10 mainly includes a pixel array in which a plurality of pixel units 12 are arranged in an array, and the pixel units 12 respectively control picture pixels presented by the corresponding pixel units 12 through corresponding Gate driving lines (Gate L ine) G1-G8 and Data driving lines (Data L ine) D1-D6. for simplicity and understanding of the related description, the number of the Gate driving lines and the Data driving lines in the drawing is only an exemplary number, but not for limiting technical features of the present invention, the pixel driving circuit of the display panel according to the present embodiment further includes a thin film transistor array (not shown in the drawings), the thin film transistor array includes a plurality of thin film transistors respectively corresponding to the pixel units 12 controlled by the thin film transistors, gates of the thin film transistors are connected to the corresponding Gate driving lines, sources of the thin film transistors are connected to corresponding Data driving lines, drains of the thin film transistors are connected to corresponding pixels, the pixels are connected to corresponding pixels, and drains of the pixels are connected to corresponding pixels, and the pixels 12 in the Red, the Red display unit 12, the Blue display unit 12, the Red display unit 12, the Blue display unit is a third row, the Red display unit, the Blue display unit 12, the Red display unit is a Red display unit, the Blue unit 12, the Blue display unit is a Red display unit 12, and the Blue unit is a Blue unit (Red display unit 12, the Blue unit 12, and the Blue unit.
As illustrated in fig. 2, in the pixel driving circuit of the display panel 10, the data driving line D1 controls only the corresponding L th row of pixel units 12, the data driving line D2 controls the corresponding L nd 4603 th row of pixel units 12, the data driving line D3 controls the corresponding L th row and L th row of pixel units 12, the data driving line D4 controls the corresponding L th row and L th row of pixel units 12, the data driving line D5 controls the corresponding L th and L th row of pixel units 12, the data driving line D6 controls the corresponding L th and L th rows of pixel units 12. in this embodiment, the number of pixel units controlled by the gate driving line of at least one pixel unit column with the outermost control edge is different from the number of pixel units controlled by the gate driving line controlling a pixel column with a pixel unit 860 of the outermost pixel unit with a pixel unit impedance of a pixel unit 860, and the adjustment unit may be performed by a circuit 3614, wherein the adjustment of the pixel unit may include a circuit 3614, a circuit which compensates for the pixel impedance of the pixel units of the outermost pixel units of the display panel, and a pixel unit 3614 of the display panel may be performed by a pixel unit 3614, where the pixel unit 3614, the pixel units of the pixel unit 3614, the display panel may be further, if the pixel units of the display panel may be performed by a pixel unit 3614, the display panel where the pixel units of the pixel unit of the display panel where the outermost display panel where the pixel unit of the outermost display panel where the pixel unit of the outermost display panel has a pixel unit of the outermost display panel where the pixel unit of the outermost display panel has a pixel unit of the outermost display panel where the pixel unit of the outermost display panel has a pixel unit of the outermost display panel where the pixel unit of the outermost pixel unit of the outermost display panel has a pixel unit of the outermost display panel has a pixel unit of the outermost pixel unit of.
In the pixel driving circuit of the display panel in this embodiment, a manner of adding a row of dummy pixel units outside the pixel unit row at the outermost edge of the display panel is used to compensate and adjust the impedance difference between the pixel unit row at the outermost edge of the display panel and the adjacent pixel unit row, the influence of the added dummy pixel units on the frame width of the whole display area is negligible, and the added dummy pixel units and the plurality of pixel units with general display functions can be manufactured in the same exposure and development process by using the same photomask, so that the manufacturing cost of the pixel driving circuit of the display panel is not increased.
Fig. 1 is a schematic diagram of a pixel driving circuit of a display panel in the prior art. As shown in FIG. 1, the display panel 20 mainly includes a pixel array having a plurality of pixel units 12 arranged in an array, and the pixel units 22 respectively control the pixels of the image displayed by the corresponding pixel units 22 through corresponding gate driving lines G1-G8 and data driving lines D1-D6. In fig. 1, each column of pixel units 22 of the pixel array is a pixel unit 22 displaying the same color, and the colors displayed by two adjacent columns of the pixel units 22 are different, for example, the pixel unit 22 of the first column counted from the left side is a pixel unit displaying Red (Red, R), the pixel unit 22 of the second column counted from the left side is a pixel unit displaying Green (Green, G), the pixel unit 22 of the third column counted from the left side is a pixel unit displaying Blue (Blue, B), and the pixel unit 22 of the fourth column counted from the left side is again a pixel unit displaying Red (Red, R), and so on will not be described in detail below.
As shown in fig. 1, in the pixel driving circuit of the display panel 20, the data driving line D1 controls only the corresponding L th column of pixel units 22, the data driving line D2 controls the corresponding L th and L03 th columns of pixel units 22, the data driving line D L controls the corresponding L th and L th columns of pixel units 22, as seen in fig. 1, because the data driving line D L of the pixel driving circuit of the display panel 20 controls only the L th column of pixel units 22 at the left side edge, and the data driving line D L controls the corresponding L th and L rd 3 rd columns of pixel units 22, the data driving line D L controls the corresponding data driving line D L and the data driving line D5472 to generate a more significant difference of the bright data driving line resistance between the bright and the data driving lines R driving lines of the vertical driving lines L R adjacent pixels of the display panel L, and the vertical driving line L is a more significant dark pixel unit of the display panel, and the display panel, therefore, the vertical pixel unit generates a significant dark pixel resistance of the vertical display panel with a relatively larger pixel resistance of the display panel.
The pixel driving circuit of the Display panel can meet the application requirements of a flat or bendable screen which adopts a thin film transistor array pixel driving circuit, such as a liquid Crystal Display (L acquired Crystal Display, L CD) panel, an Organic light Emitting Diode (O L ED) Display panel and the like.
The pixel driving circuit of the display panel of the embodiment of the invention does not need to adjust and compensate the bright and dark line defects generated by the impedance value difference among different pixel rows by using complex control signals, and the voltage values or pulse wave widths (charging time) of the driving signals on the plurality of data driving lines can be the same, so that the design of a control signal chip is relatively simple and the problem of interference generated among complex pulse wave signals is reduced. Meanwhile, because the voltage values or pulse widths (charging time) of the driving signals on the plurality of data driving lines are the same, the plurality of thin film transistors of the thin film transistor array can adopt the same structural design (such as gate width and doping concentration), so that the whole manufacturing process is relatively simple and the manufacturing cost is reduced.
In the pixel driving circuit of the display panel in this embodiment, a column of Dummy pixel (Dummy pixel) units is further added outside the pixel unit column at the outermost edge of the display panel to compensate and adjust the impedance difference between the pixel unit column at the outermost edge of the display panel and the adjacent pixel unit column, so that the impedances between the pixel unit column at the outermost edge of the display panel and the adjacent pixel unit column are equal or similar, and the display defect of the edge vertical bright and dark line caused by the impedance difference between the pixel units in different columns is effectively improved. Moreover, in the pixel driving circuit of the display panel in this embodiment, a manner of adding a row of dummy pixel units outside the pixel unit row at the outermost edge of the display panel is used to compensate and adjust the impedance difference between the pixel unit row at the outermost edge of the display panel and the adjacent pixel unit row, the influence of the added dummy pixel units on the frame width of the whole display area is negligible, and the added dummy pixel units and the pixel unit rows with a common display function can be manufactured in the same exposure and development process by using the same pair of light masks, so that the manufacturing cost of the pixel driving circuit of the display panel is not increased.
In summary, although the present invention has been disclosed with reference to the preferred embodiments, the above-mentioned preferred embodiments are not intended to limit the present invention, and those skilled in the art will appreciate that various modifications and changes can be made without departing from the spirit and scope of the present invention, which is defined by the appended claims.
Claims (10)
1. A pixel driving circuit of a display panel, the pixel driving circuit comprising:
a pixel array composed of a plurality of pixel units arranged in an array;
a plurality of grid drive lines and a plurality of data drive lines for controlling the picture pixels presented by each pixel unit;
at least one row of dummy pixel units is arranged at the outer side of the pixel unit row at the outermost side of the edge, and the dummy pixel units do not have the function of displaying picture pixels.
2. The pixel driving circuit of claim 1, wherein the number of columns of pixel units controlled by the first gate driving line of at least one edge-outermost pixel unit column is different from the number of columns of pixel units controlled by the second gate driving line of a non-edge-outermost pixel unit column, and the number of columns of pixel units controlled by the first gate driving line is less than the number of columns of pixel units controlled by the second gate driving line.
3. The pixel driving circuit of claim 2, wherein the number of columns of pixel units controlled by the second gate driving line is twice the number of columns of pixel units controlled by the first gate driving line.
4. The pixel driving circuit of claim 1, wherein the first gate driving line comprises the left-most and right-most gate driving lines.
5. The pixel driving circuit of the display panel according to claim 4, wherein the dummy pixel unit includes dummy pixel units disposed outside the pixel unit columns at a leftmost edge and a rightmost edge, respectively.
6. The pixel driving circuit according to claim 1, wherein each column of pixel units of the pixel array is a pixel unit displaying the same color.
7. The pixel driving circuit according to claim 6, wherein the colors displayed by the pixel units of two adjacent columns of pixel units of the pixel array are different.
8. The pixel driving circuit of claim 7, wherein the colors displayed by the pixel units of different columns are arranged in a fixed order.
9. The pixel driving circuit of claim 1, wherein the dummy pixel unit and the plurality of pixel units are fabricated by a same photomask in a same exposure and development process.
10. The pixel driving circuit according to claim 1, wherein the driving signal voltages or pulse widths on the plurality of data driving lines are the same.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010277153.6A CN111429857A (en) | 2020-04-10 | 2020-04-10 | Pixel driving circuit of display panel |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010277153.6A CN111429857A (en) | 2020-04-10 | 2020-04-10 | Pixel driving circuit of display panel |
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| CN111429857A true CN111429857A (en) | 2020-07-17 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1912721A (en) * | 2005-08-12 | 2007-02-14 | 株式会社日立显示器 | Display device |
| US20070146518A1 (en) * | 2005-12-27 | 2007-06-28 | Won-Kee Hong | Array substrate and liquid crystal display device having the same |
| CN107799577A (en) * | 2017-11-06 | 2018-03-13 | 武汉华星光电半导体显示技术有限公司 | AMOLED display panels and displayer |
| CN107966838A (en) * | 2017-12-18 | 2018-04-27 | 深圳市华星光电技术有限公司 | A kind of liquid crystal panel and display device |
| CN109828397A (en) * | 2019-04-09 | 2019-05-31 | 惠科股份有限公司 | Image element circuit structure |
| CN110109309A (en) * | 2019-05-06 | 2019-08-09 | 深圳市华星光电技术有限公司 | Array substrate and its display panel |
-
2020
- 2020-04-10 CN CN202010277153.6A patent/CN111429857A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1912721A (en) * | 2005-08-12 | 2007-02-14 | 株式会社日立显示器 | Display device |
| US20070035687A1 (en) * | 2005-08-12 | 2007-02-15 | Ryutaro Oke | Display device |
| US20070146518A1 (en) * | 2005-12-27 | 2007-06-28 | Won-Kee Hong | Array substrate and liquid crystal display device having the same |
| CN1991546A (en) * | 2005-12-27 | 2007-07-04 | 三星电子株式会社 | Array substrate and liquid crystal display device having the same |
| CN107799577A (en) * | 2017-11-06 | 2018-03-13 | 武汉华星光电半导体显示技术有限公司 | AMOLED display panels and displayer |
| CN107966838A (en) * | 2017-12-18 | 2018-04-27 | 深圳市华星光电技术有限公司 | A kind of liquid crystal panel and display device |
| CN109828397A (en) * | 2019-04-09 | 2019-05-31 | 惠科股份有限公司 | Image element circuit structure |
| CN110109309A (en) * | 2019-05-06 | 2019-08-09 | 深圳市华星光电技术有限公司 | Array substrate and its display panel |
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