TW201537541A - Display panel and driving method thereof - Google Patents

Abstract

A display panel and a driving method thereof are provided. The display panel includes a plurality of a first data lines, a plurality of a second data lines and a plurality of pixel columns. The pixel columns have a plurality of pixels respectively. A plurality of first sub-pixels of An i-th odd pixel and an i-th even pixel and a plurality of second sub-pixels of a (i+1)-th odd pixel and a (i+1)-th even pixel within each pixel column electrically connect to one of a corresponding first data line and a corresponding second data line. A plurality of second sub-pixels of the i-th odd pixel and the i-th even pixel and a plurality of first sub-pixels of the (i+1)-th odd pixel and the (i+1)-th even pixel within the each pixel column electrically connect to the other one of the corresponding first data line and the corresponding second data line.

Description

Display panel and driving method thereof

The present invention relates to a flat display technology, and more particularly to a display panel for improving a stereoscopic display screen and a driving method thereof.

In recent years, flat panel displays have been widely used in various electronic products due to their small size, high image quality, low power consumption, and no radiation. As the development of technology continues to advance, in order to allow users to view images closer to reality, flat-panel displays are currently evolving toward the trend of displaying stereoscopic images. Generally speaking, the principle of displaying a stereoscopic picture is to send a left-eye picture and a right-eye picture, which can form a stereoscopic picture, into the left and right eyes of the user respectively, thereby causing the brain to construct a three-dimensional picture of three-dimensional space.

In the case of a flat panel display using a 2D2G (ie, two data lines and two scan lines) pixel structures, when displaying a stereoscopic picture, the problem of uneven brightness is likely to occur due to the arrangement relationship of the pixel circuits. However, in order for a flat panel display to exhibit uniform brightness when displaying a stereoscopic picture, the flat panel display produces a color washout. Therefore, how to make a flat panel display when displaying a stereoscopic image The uniform brightness does not cause color shift phenomenon, which is a problem to be solved by those skilled in the art.

The invention provides a display panel and a driving method thereof, which can improve the problem of uneven brightness (for example, horizontal bright and dark lines) and color shift when the display panel displays a stereoscopic picture.

The display panel of the present invention includes a plurality of first data lines, a plurality of second data lines, and a plurality of pixel rows. Each of the plurality of pixel rows has a plurality of pixels, and each of the pixel rows corresponds to one of the plurality of first data lines and one of the plurality of second data lines. Each pixel includes a first sub-pixel and a second sub-pixel. The i-th odd pixel of each pixel row and the plurality of first sub-pixels of the i-th even pixel and the second i-pixel of the i+1th odd pixel and the second sub-pixel of the i+1th even pixel are electrically connected One of the corresponding first data line and the corresponding second data line. The i-th odd pixel of each pixel row and the plurality of second sub-pixels of the i-th even pixel and the first i-pixel of the i+1th odd pixel and the first sub-pixel of the i+1th even pixel are electrically connected One of the corresponding first data line and the corresponding second data line, i is a positive integer.

In an embodiment of the invention, the plurality of first data lines and the plurality of second data lines are alternately arranged in a horizontal direction, wherein the horizontal direction is different from the plurality of first data lines and the plurality of second data lines. The direction in which the line extends.

In an embodiment of the present invention, the first sub-pixel and the second sub-pixel of each pixel row correspond to the same color and are different from the first sub-pixel and the second sub-pixel of the adjacent pixel row. The color.

In an embodiment of the invention, the adjacent plurality of first data lines The polarities of the received pixel voltages are different from each other, and the polarities of the pixel voltages received by the adjacent plurality of second data lines are different from each other.

In an embodiment of the invention, the display panel further includes a plurality of scan lines. The plurality of scan lines are electrically connected to the plurality of first sub-pixels and the plurality of second sub-pixels of the corresponding plurality of pixels, respectively, to provide the plurality of scan signals to the plurality of first sub-pixels and the plurality of second sub-pixels Picture.

In an embodiment of the invention, the plurality of first sub-pixels respectively include a first pixel electrode and a first switch. The first switch has a first end, a second end, and a first control end. The first end of the first switch is electrically connected to one of the corresponding first data line and the corresponding second data line. The second end of the first switch is electrically connected to the first pixel electrode. The control end of the first switch is electrically connected to the corresponding scan line.

In an embodiment of the invention, the display panel further includes a plurality of sharing control lines. The plurality of sharing control lines are electrically connected to the plurality of second sub-pixels of the corresponding plurality of pixels, respectively, for providing the plurality of charge sharing signals to the plurality of second sub-pixels.

In an embodiment of the invention, the plurality of second sub-pixels respectively include a second pixel electrode, a second switch, a third switch, and a capacitor. The second switch has a first end, a second end, and a control end. The first end of the second switch is electrically connected to one of the corresponding first data line and the corresponding second data line. The second end of the second switch is electrically connected to the second pixel electrode. The control end of the second switch is electrically connected to the corresponding scan line. The third switch has a first end, a second end, and a control end. The first end of the third switch is electrically connected to the second pixel electrode. The control end of the third switch is electrically connected to the corresponding shared control line. The capacitor is electrically connected between the second end of the third switch and the reference voltage level.

The driving method of the display panel of the present invention is suitable for displaying a left-eye image or a right-eye image display panel of a stereoscopic image, and the driving method of the display panel comprises the following steps. Simultaneously turning on the i-th odd pixel of each pixel row and the first sub-pixel of the i-th even pixel to receive the same first pixel voltage through the corresponding first data line or the corresponding second data line . Simultaneously turning on the i-th odd pixel of each pixel row and the second sub-pixel of the i-th even pixel to receive the same second pixel voltage through the corresponding first data line or the corresponding second data line . Simultaneously turning on the i+1th odd pixel of each pixel row and the first subpixel of the i+1th even pixel to receive the same first through the corresponding first data line or the corresponding second data line Three pixel voltage. Simultaneously turning on the i+1th odd pixel of each pixel row and the second subpixel of the i+1th even pixel to receive the same first through the corresponding first data line or the corresponding second data line Four pixel voltage.

In an embodiment of the invention, the first pixel voltage is different from the second pixel voltage, and the third pixel voltage is different from the fourth pixel voltage.

In an embodiment of the present invention, the first sub-pixels of the i-th odd pixel and the i-th even pixel of each pixel row and the opening times of the second sub-pixels are different from the i+ of the respective pixel rows. 1 The first sub-pixel of the odd pixel and the i+1th even pixel and the opening time of the second sub-pixel.

The driving method of the display panel of the present invention is suitable for displaying a display panel of a flat screen, and the driving method of the display panel comprises the following steps. The first sub-pixels of the pixels of each pixel row are sequentially turned on to receive different pixel voltages through the corresponding first data line or the corresponding second data line. Start each The second sub-pixels of the pixels of the pixel rows respectively receive different pixel voltages through the corresponding first data line or the corresponding second data line.

In an embodiment of the invention, the polarities of the pixel voltages received by the adjacent first data lines are different from each other, and the polarities of the pixel voltages received by the adjacent second data lines are different from each other.

Based on the above, the driving method of the display panel of the present invention configures the first sub-pixel in the i-th odd pixel and the first sub-pixel in the i-th even pixel to receive the same voltage, and the i-th odd pixel The second sub-pixel in the second sub-pixel and the second sub-pixel in the i-th even pixel are configured to receive the same voltage. Therefore, the display panel of the present invention can avoid the problem of uneven brightness, such as a horizontal bright line, when displaying a stereoscopic picture or a flat picture. On the other hand, since the configuration of the display panel pixel circuit of the present invention is different from that of the conventional display panel, even if the same voltage value is applied to a plurality of data lines, the display panel does not cause color shift.

The above described features and advantages of the invention will be apparent from the following description.

100‧‧‧ display panel

A1~A4‧‧‧Share control line

C11‧‧‧ capacitor

E11_1, E11_2‧‧‧ pixel electrodes

F1, F2‧‧‧ first data line

G1, G2‧‧‧ scan line

M11_1~M11_3‧‧‧ switch

P1, P2‧‧‧

PX11~PX14‧‧‧ pixels

PX11_1, PX11_2, PX12_1, PX12_2, PX13_1, PX13_2, PX14_1, PX14_2‧‧‧ sub-pixels

S1, S2‧‧‧ second data line

SCH‧‧‧charge sharing signal

VD1~VD4‧‧‧ pixel voltage

FIG. 1 is a schematic diagram of a configuration of a display panel according to an embodiment of the invention.

FIG. 1 is a schematic diagram of a configuration of a display panel according to an embodiment of the invention; Figure. The display panel 100 includes a plurality of first data lines (such as data lines F1 and F2), a plurality of second data lines (such as data lines S1 and S2), a plurality of pixel lines (such as pixel lines P1 and P2), and multiple scans. Lines (such as scan lines G1, G2) and multiple share control lines (such as shared control lines A1, A2). The first data line (such as the data line F1, F2) and the second data line (such as the data line S1, S2) are alternately arranged in the horizontal direction, wherein the horizontal direction defined here is different from the first one. The extension direction of the data lines (such as data lines F1 and F2) and the second data lines (such as data lines S1 and S2).

Each pixel row (such as a pixel row P1, P2) respectively corresponds to one of the plurality of first data lines and one of the plurality of second data lines, and each pixel row is respectively disposed in the corresponding first data line and the second Between data lines. For example, the pixel row P1 corresponds to the data lines F1 and S1 and is disposed between the two, and the pixel row P2 corresponds to the data lines F2 and S2 and is disposed between the two. Each of the pixels has a plurality of pixels, and each pixel (such as pixels PX11 to PX14) includes two sub-pixels (such as sub-pixels PX11_1~PX14_1, PX11_2~PX14_2). For example, the pixel row P1 includes a plurality of pixels (such as PX11~PX14). In this embodiment, the pixel PX11 (corresponding to the i-th odd pixel) includes a sub-pixel PX11_1 and a sub-pixel PX11_2, and the pixel PX12 (corresponding to the i-th even pixel) includes a sub-pixel PX12_1 and a sub-pixel PX12_2, The pixel PX13 (corresponding to the i+1th odd pixel) includes a subpixel PX13_1 and a subpixel PX13_2, and the pixel PX14 (corresponding to the i+1th even pixel) includes a subpixel PX14_1 and a subpixel PX14_2, and the rest And so on, and can be known from the drawings, and will not be described here, wherein i is a positive integer.

Taking the pixel line P1 as an example, the sub-pixel PX11_1, the sub-pixel PX12_1, and the sub-pixel The pixel PX13_2 and the sub-pixel PX14_2 are both connected to the data line F1, and the sub-pixel PX11_2, the sub-pixel PX12_2, the sub-pixel PX13_1, and the sub-pixel PX14_1 are all connected to the data line S1. The circuit structure of the pixel row P2 is substantially the same as the circuit structure of the pixel row P1, but the circuit structure of the pixel row P2 can be regarded as a result of mirroring of the circuit structure of the pixel row P1, and the circuit structure of other pixel rows can be obtained by referring to the illustration. I understand that I will not repeat them here.

In addition, the scan line G1 is electrically connected to the sub-pixel PX11_1 and the sub-pixel PX11_2 in the pixel PX11, respectively, and the scan line G1 can provide a scan signal to control whether the sub-pixel PX11_1 and the sub-pixel PX11_2 are turned on. On the other hand, the sharing control line A1 is electrically connected to the sub-pixel PX11_2 in the PX11 and supplies the charge sharing signal SCH to adjust the pixel voltage of the sub-pixel PX11_2. Please refer to the above description for the connection relationship between other scan lines and sharing control lines and pixels. It is worth noting that multiple scan lines and multiple share control lines are alternately turned on. For example, after the scan line G1 is turned on, the share control line A1 is turned on, and then the scan line G2 is sequentially turned on and the share control line A2 is sequentially turned on.

In the present embodiment, when the display panel 100 is configured to display a left-eye picture or a right-eye picture of a three-dimensional (3D) picture, the pixels PX11 and the pixel PX12 in the pixel line P1 are simultaneously turned on, so that The sub-pixel PX11_1 and the sub-pixel PX12_1 receive the first pixel voltage VD1 through the data line F1, and the sub-pixel PX11_2 and the sub-pixel PX12_2 receive the second pixel voltage VD2 through the data line S1. Then, the charge sharing signal SCH transmitted to the sharing control lines A1 and A2 is enabled to adjust the pixel voltages of the sub-pixels PX11_2 and PX12_2.

Secondly, the pixel PX13 and the pixel PX14 in the pixel row P1 are simultaneously turned on, so that the subpixel PX13_1 and the subpixel PX14_1 receive the third pixel voltage VD3 through the data line S1, and the subpixel PX13_2 and the subpixel. The pixel PX13_2 receives the fourth pixel voltage VD4 through the data line F1. Then, the charge sharing signal SCH transmitted to the sharing control lines A3, A4 is enabled to adjust the pixel voltages of the sub-pixels PX13_2 and PX14_2. The writing operation of the remaining pixels can be referred to the above, and will not be described again here. In the present embodiment, the first pixel voltage VD1 and the second pixel voltage VD2 correspond to the same gray scale value (ie, the luminance value), but the first pixel voltage VD1 is different from the second pixel voltage VD2. Further, the third pixel voltage VD3 and the fourth pixel voltage VD4 correspond to the same gray scale value (ie, luminance value), but the third pixel voltage VD3 is different from the fourth pixel voltage VD4. Therefore, the display panel 100 does not generate a luminance unevenness (for example, a horizontal bright dark line) when displaying a stereoscopic picture.

In the embodiment of the present invention, the data line F1 and the data line S2 can receive a positive polarity voltage, and the data line S1 and the data line F2 can receive a negative polarity voltage. In other words, the voltage polarities received by both the data line F1 and the adjacent data line F2 may be different from each other, and the voltage polarities received by both the data line S1 and the adjacent data line S2 may be different from each other. It should be noted that the voltage polarity described above is only an exemplary embodiment. In other embodiments, the data line F1 and the data line S2 can also receive the negative polarity voltage, and the data line S1 and the data line F2 can also receive the positive polarity. The voltage, wherein the positive and negative voltages are relative to the magnitude of the reference voltage level, the reference voltage level is referred to as a positive voltage, and the reference voltage level is referred to as a negative voltage.

According to the above, the subpixel PX11_1 of the pixel PX11 in the pixel row P1 The opening time of the subpixel PX11_2 and the subpixel PX12_1 and the subpixel PX12_2 of the pixel PX11_2 and the pixel PX12 are different from the subpixel PX13_1 of the pixel PX13 in the pixel row P1 and the subpixel of the subpixel PX13_2 and the pixel PX14. The opening time of PX14_1 and subpixel PX14_2.

Next, the pixel PX11 is taken as an example to illustrate the configuration of the pixel circuit, and other pixels (ie, PX12~PX14) can be deduced by analogy. In the present embodiment, the subpixel PX11_1 includes a pixel electrode E11_1 (corresponding to the first pixel electrode) and a switch M11_1 (corresponding to the first switch). The first end of the switch M11_1 is electrically connected to the corresponding data line F1, and the second end of the switch M11_1 is electrically connected to the pixel electrode E11_1. The first control end of the switch M11_1 is electrically connected to the corresponding scan line G1. The subpixel PX11_2 includes a pixel electrode E11_2 (corresponding to the second pixel electrode), a switch M11_2 (corresponding to the second switch), a switch M11_3 (corresponding to the third switch), and a capacitor C11. The first end of the switch M11_2 is electrically connected to the corresponding data line S1, the second end of the switch M11_2 is electrically connected to the pixel electrode E11_2, and the control end of the switch M11_2 is electrically connected to the corresponding scan line G1. The first end of the switch M11_3 is electrically connected to the pixel electrode E11_2, and the control end of the switch M11_3 is electrically connected to the corresponding sharing control line A1. The capacitor C11 is electrically connected between the second end of the switch M11_3 and a reference voltage level (for example, a ground potential). It should be noted that the capacitor C11 is used to adjust the voltage of the pixel electrode E11_2 of the sub-pixel PX11_2 to improve the color shift of the display panel 100 when displaying a picture.

In the display panel 100 of FIG. 1, the pixels corresponding to the pixels (eg, pixels PX11 to PX14) in the pixel row P1 may be different from the colors corresponding to the plurality of pixels in the pixel row P2. In other words, if the pixel row P1 corresponds to red, the pixel row P2 can correspond to green. The color, that is, the color of the pixel P1 and the pixel row P2 are different from each other, but the embodiment of the present invention is not limited thereto, and the pixels in the pixel row (such as P1, P2) of the display panel 100 (such as the pixel PX11~). PX14) can correspond to different colors according to actual use conditions.

On the other hand, when the display panel 100 displays a flat screen, the pixels P111 to PX14 in the pixel row P1 are sequentially turned on, so that the sub-pixels (such as PX11_1~PX14_1 and PX11_2~PX14_2) pass through the coupled data line F1. Or the coupled data line S1 receives different pixel voltages (such as VD1~VD4). The charge sharing signal SCH transmitted to the sharing control lines A1 to A4 is sequentially enabled to sequentially adjust the pixel voltages of the sub-pixels PX11_2 to PX14_2.

In summary, the display panel of the embodiment of the present invention configures the first sub-pixel in the i-th odd pixel and the first sub-pixel in the i-th even pixel to receive the same voltage, and draws the i-th odd number The second sub-pixel in the prime and the second sub-pixel in the i-th even pixel are configured to receive the same voltage to avoid a situation in which the display panel generates uneven brightness (for example, a horizontal bright dark line) on the displayed stereoscopic image.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention, and any one of ordinary skill in the art can make some changes and refinements without departing from the spirit and scope of the present invention. The scope of the invention is defined by the scope of the appended claims.

100‧‧‧ display panel

A1~A4‧‧‧Share control line

C11‧‧‧ capacitor

E11_1, E11_2‧‧‧ pixel electrodes

F1, F2‧‧‧ first data line

G1, G2‧‧‧ scan line

M11_1~M11_3‧‧‧ switch

P1, P2‧‧‧

PX11~PX14‧‧‧ pixels

PX11_1, PX11_2, PX12_1, PX12_2, PX13_1, PX13_2, PX14_1, PX14_2‧‧‧ sub-pixels

S1, S2‧‧‧ second data line

SCH‧‧‧charge sharing signal

VD1~VD4‧‧‧ pixel voltage

Claims (13)

A display panel includes: a plurality of first data lines and a plurality of second data lines; and a plurality of pixel lines each having a plurality of pixels, and each of the pixel lines respectively corresponding to one of the first data lines And one of the second data lines, wherein each of the pixels includes a first sub-pixel and a second sub-pixel, and the i-th odd pixel and the i-th even pixel of each of the pixel rows The first sub-pixel and the i+1th odd pixel and the second sub-pixel of the i+1th even pixel are electrically connected to the corresponding first data line and the corresponding second data line. And the first sub-pixels of the pixel rows and the second sub-pixels of the i-th even pixel and the first sub-pixel of the i+1th odd pixel and the i+1th even pixel The pixel is electrically connected to one of the corresponding first data line and the corresponding second data line, and i is a positive integer. The display panel of claim 1, wherein the first data lines and the second data lines are alternately arranged in a horizontal direction, wherein the horizontal direction is different from the first data lines and The extension direction of the second data lines. The display panel of claim 2, wherein the first sub-pixels of each pixel row and the second sub-pixels correspond to the same color and are different from the first sub-pictures of adjacent pixel rows. And the color corresponding to the second sub-pixels. The display panel of claim 2, wherein the polarities of the pixel voltages received by the adjacent first data lines are different from each other, and the pixel voltages received by the adjacent second data lines. The polarities are different from each other. The display panel according to claim 1, further comprising a plurality of scans The first sub-pixels of the pixels corresponding to the pixels and the second sub-pixels are electrically connected to provide a plurality of scan signals to the first sub-pixels and the second sub-pictures Prime. The display panel of claim 5, wherein the first sub-pixels respectively comprise: a first pixel electrode; and a first switch having a first end, a second end, and a control The first end is electrically connected to one of the corresponding first data line and the corresponding second data line, and the second end is electrically connected to the first pixel electrode, and the control end is electrically connected to the corresponding scan line. . The display panel of claim 6, further comprising a plurality of sharing control lines, respectively electrically connecting the corresponding second sub-pixels of the pixels to provide a plurality of charge sharing signals to the Some second sub-pixels. The display panel of claim 7, wherein the second sub-pixels respectively comprise: a second pixel electrode; and a second switch having a first end, a second end, and a control The first end is electrically connected to the other of the corresponding first data line and the corresponding second data line, and the second end is electrically connected to the second pixel electrode, and the control end is electrically connected to the corresponding one. a scan line; a third switch having a first end, a second end, and a control end, wherein the first end is electrically connected to the second pixel electrode, and the control end is electrically connected to the corresponding sharing control And a capacitor electrically connected between the second end of the third switch and a reference voltage level. The method for driving a display panel according to the first aspect of the invention, wherein the display panel is configured to display a left-eye image or a right-eye image of a stereoscopic image, the method comprising: simultaneously turning on the pixels of each of the pixels The first sub-pixels of the odd-numbered pixels and the ith-numbered pixels are used to receive the same first pixel voltage through the corresponding first data line or the corresponding second data line; The second i-pixel of the pixel line and the second sub-pixel of the i-th even pixel are used to receive the same second pixel voltage through the corresponding first data line or the corresponding second data line; The first sub-pixels of the i+1th odd pixel and the i+1th even pixel of each of the pixel rows are turned on, and the same is received through the corresponding first data line or the corresponding second data line. a third pixel voltage; and simultaneously opening the second sub-pixel of the i+1th odd pixel and the i+1th even pixel of each of the pixel rows for transmitting the corresponding first data line or The corresponding second data line receives the same fourth pixel voltage. The method of claim 9, wherein the first pixel voltage is different from the second pixel voltage, the third pixel voltage being different from the fourth pixel voltage. The method of claim 9, wherein each of the pixels is The first sub-pixel of the i-th odd pixel and the first sub-pixel of the i-th pixel and the opening time of the second sub-pixel are different from the i+1th odd pixel and the i+ of each of the pixel rows The opening time of the first sub-pixels of the even pixels and the second sub-pixels. The method for driving a display panel according to the first aspect of the invention, wherein the display panel is configured to display a plane image, the method comprising: sequentially opening the first children of the pixels of each of the pixel rows The pixels respectively receive different plurality of pixel voltages through the corresponding first data line or the corresponding second data line; and sequentially turn on the second sub-pixels of the pixels of each of the pixel rows Receiving different pixel voltages respectively through the corresponding first data line or the corresponding second data line. The method of claim 12, wherein the polarities of the pixel voltages received by the adjacent first data lines are different from each other, and the pixel voltages received by the adjacent second data lines are The polarities are different from each other.