Patent ID: 12190841

DESCRIPTION OF SPECIFIC EMBODIMENTS OF THE INVENTION

The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative work shall fall within the protection scope of this application.

Embodiments of the present application provide a pixel structure and a display panel capable of solving a problem of abnormal display due to vertical crosstalk caused by parasitic capacitance to pixel units. Detailed descriptions are given below. It should be noted that the description order of the following embodiments is not intended to limit the preferred order of the embodiments. In addition, in the description of this application, the term “including” means “including but not limited to”. The terms “first”, “second”, “third”, etc. are used to distinguish different objects, rather than to describe a specific sequence.

Please refer toFIGS.1to4.FIG.1is a first top plan view of a pixel structure provided by an embodiment of the present application;FIG.2is a circuit diagram of a pixel structure provided by an embodiment of the present application;FIG.3is a first layout view of a pixel structure provided by an embodiment of the present application;FIG.4is a second top plan view of a pixel structure provided by an embodiment of the present application. As shown inFIG.1, an embodiment of the present application provides a pixel structure100, including a first pixel electrode10, a second pixel electrode20, a transverse signal line30, a first longitudinal signal line40, and a second longitudinal signal line50. The first pixel electrode10includes a first main pixel area11and a first sub-pixel area12. The second pixel electrode20is arranged in alternation with the first pixel electrode10in a first direction X and includes a second main pixel area21and a second sub-pixel area22. The transverse signal line30is located between the first main pixel area11and the first sub-pixel area12and extends in the first direction X. The first longitudinal signal line40includes a first main line41and a first secondary-line42. The second longitudinal signal line50includes a second main line51and a second secondary-line52. Specifically, each of the first main line41and the second main line51is arranged in the first main pixel area11, each of the first secondary-line42and the second secondary-line52is arranged in the first sub-pixel area12, and electrical signals on the first longitudinal signal line40, and the second longitudinal signal line50are opposite.

In the pixel structure provided by the present application, the first main line41and the second main line51are both disposed in the first main pixel area11, both the first secondary-line42and the second secondary-line52are disposed in the first sub-pixel area12, and the electrical signals on the first vertical signal line40and the second vertical signal line50are opposite to each other. Such a structure can cancel effects of capacitive coupling between the first longitudinal signal line40, and the second longitudinal signal line50and the first pixel electrode10, which is beneficial to eliminate vertical crosstalk and improve display performance. Compared with adjacent ones of conventional data lines located in corresponding pixel areas, a distance between the first longitudinal signal line40and the adjacent second longitudinal signal line50in the present application is relative closer, and an effect of canceling the coupling is more significant.

In the embodiment of the present application, the transverse signal line30is a scanning signal line, and the first longitudinal signal line40and the second longitudinal signal line50are both data signal lines.

In the embodiment of the present application, the transverse signal line30is located in a transistor circuit area TA, that is, the transistor circuit area TA is located between the first main pixel area11and the first sub-pixel area12, and is also located between the second main pixel area21and the second sub-pixel area22. As shown inFIG.2, each transistor circuit area TA corresponding to the first pixel electrode10or the second pixel electrode20is provided with a first transistor T1, a second transistor T2, and a third transistor T3.FIG.2is a pixel structure based on a transverse signal line30, a data line and three thin-film transistors in an embodiment of the present application. Taking the first pixel electrode10as an example: the first main pixel area11includes a first transistor T1, a first liquid crystal capacitor Clca, and a first storage capacitor Csta. A gate of the first transistor T1is electrically connected to the transverse signal line30, and a source and a drain of the first transistor T1are electrically connected to the first main line41of the first longitudinal signal line40and the first liquid crystal capacitor Clca, respectively. The first liquid crystal capacitor Clca and the first storage capacitor Csta are connected in parallel between the drain/source of the first transistor T1and a common electrode A_com.

Specifically, the first sub-pixel area12includes a second transistor T2, a third transistor T3, a second liquid crystal capacitor Clcb, and a second storage capacitor Cstb. A gate of the second transistor T2is electrically connected to the transverse signal line30, and a source and a drain of the second transistor T2are electrically connected to the first secondary-line42of the first longitudinal signal line40and the second liquid crystal capacitor Clcb, respectively. A gate of the third transistor T3is electrically connected to the transverse signal line30, and a source and a drain of the third transistor T3are electrically connected to the drain/source and a common electrode A_com of the second transistor T2, respectively. Correspondingly, the thin-film transistor in the second pixel electrode20is electrically connected to the second longitudinal signal line50.

In the embodiment of the present application, the transverse signal line30is a scan line for providing scan signals; the first longitudinal signal line40is a first data line for providing data signals; the second longitudinal signal line50is a second data line for providing data signals.

In the embodiment of the present application, the first longitudinal signal line40and the second longitudinal signal line50are parallel to each other, and the transverse signal line30is perpendicular to the first longitudinal signal line40and the second longitudinal signal line50. Such a structure is beneficial to wiring layouts in the pixel structure.

In an embodiment of the present application, further, the first longitudinal signal line40and the second longitudinal signal line50are symmetrical with respect to a center line of the first pixel electrode10. That is, a distance between the first longitudinal signal line40and the center line of the first pixel electrode10is equal to a distance between the second longitudinal signal line50and the center line of the first pixel electrode10. In this manner, it is beneficial to cancel the coupling of signal inversion between the first longitudinal signal line40and the second longitudinal signal line50on the first pixel electrode10, and both the first longitudinal signal line40and the second longitudinal signal line50are located in the main pixel area or the sub-pixel area of the first pixel electrode10. Therefore, a distance between the first longitudinal signal line40and the second longitudinal signal line50is shorter, which is beneficial to minimize the crosstalk of an image. In addition, it is beneficial to increase an area of an opening area AA of the first pixel electrode10or the second pixel electrode20by using space between the first pixel electrode10and the second pixel electrode20originally configured for placing data lines, thus improving an aperture ratio and increasing transmittance.

In the embodiment of the present application, the first longitudinal signal line40is electrically connected to one of the first pixel electrode10or the second pixel electrode20. The second longitudinal signal line50is electrically connected to the other of the first pixel electrode10or the second pixel electrode20. As shown inFIG.3, the first longitudinal signal line40is electrically connected to the first pixel electrode10; the second longitudinal signal line50is electrically connected to the second pixel electrode20. Specifically, the first main line41is electrically connected to the first transistor T1; the first secondary-line42is electrically connected to the second transistor T2. The first pixel electrodes10and the second pixel electrodes20are alternately arranged in the first direction X. Specifically, the first longitudinal signal line40and the second longitudinal signal line50may also be located in the second pixel electrode20(not shown). Those skilled in the art can modify the arrangement as needed, which is not limited in this application.

In one embodiment of the present application, as shown inFIG.4, the pixel structure further includes a first shared electrode60arranged along and overlapping the center line of the first pixel electrode10. The first shared electrode60is configured to adjust a voltage difference between the first main pixel area11and the first sub-pixel area12to adjust overall brightness of the first pixel electrode10. Specifically, the first longitudinal signal line40and the second longitudinal signal line50are symmetrical with respect to the first shared electrode60. In this fashion, a distance between the first longitudinal signal line40and the first shared electrode60is equal to a distance between the second longitudinal signal line50and the first shared electrode60, which is beneficial to the wiring layout and can further enhance the effect of canceling the coupling. Specifically, a material of the first shared electrode60includes a metal oxide, such as at least one of indium tin oxide, indium zinc oxide, aluminum tin oxide, aluminum zinc oxide, indium germanium zinc oxide, etc., or a metal combination thereof.

In one embodiment of the present application, the pixel structure further includes a second shared electrode70arranged along and overlapping a center line of the second pixel electrode20. The second shared electrode70is configured to adjust a voltage difference between the second main pixel area21and the second sub-pixel area22to adjust overall brightness of the second pixel electrode20. In this fashion, the distance between the first longitudinal signal line40and the first shared electrode60is equal to the distance between the second longitudinal signal line50and the first shared electrode60, which is beneficial to the wiring layout and can further enhance the effect of canceling the coupling. Specifically, a material of the second shared electrode70includes a metal oxide, such as at least one of indium tin oxide, indium zinc oxide, aluminum tin oxide, aluminum zinc oxide, indium germanium zinc oxide, etc., or a metal combination thereof.

In one embodiment of this application, the first shared electrode60and the second shared electrode70receive different voltage signals, respectively. Specifically, the first pixel electrode10and the second pixel electrode20can be regarded as a cycle pixel unit, and are arranged in an array on the display panel300, but may bring about a defect that resolution of the display panel300is reduced. Therefore, in this embodiment, the first shared electrode60and the second shared electrode70are disposed, respectively, and voltage signals of the first shared electrode60and the second shared electrode70can be adjusted independently in order to enable individual adjustment of display brightness of the first pixel electrode10and the second pixel electrode20, so that the above-mentioned defect is overcome. Furthermore, since the first longitudinal signal line40and the second longitudinal signal line50are disposed in the opening area AA of the first pixel electrode10or the second pixel electrode20, a problem of shading is prone to occur, causing the brightness of the first pixel electrode10and the second pixel electrode20to be inconsistent. By connecting the first shared electrode60and the second shared electrode70with different voltage signals, respectively, the display brightness of the first pixel electrode10and the second pixel electrode20is adjusted, which is beneficial to prevent color shift and achieve brightness uniformity.

In one embodiment of the present application, each of the first longitudinal signal line40and the second longitudinal signal line50is located within an area between an edge region and a center region of the first pixel electrode10, that is, in the opening area AA. Specifically, the first pixel electrode10includes a first common electrode80, and a square area surrounded by the first common electrode80is the opening area AA of the first pixel electrode10; correspondingly, the second pixel electrode20includes a second common electrode90, and a square area surrounded by the second common electrode90is the opening area AA of the second pixel electrode20. That is, the first common electrode80and the second common electrode90are disposed in a non-display area of each of the first pixel electrode10and the second pixel electrode20. Further, the first longitudinal signal line40and the second longitudinal signal line50are parallel in a width direction of the opening area AA of the first pixel electrode10. A distance between the first common electrode80located in a length direction of one side of the first pixel electrode10and the first longitudinal signal line40, and a distance between the first common electrode80located in the length direction of an opposite side of the first pixel electrode10and the second longitudinal signal line50are both greater than a predetermined distance. Specifically, the predetermined distance needs to satisfy: an electric field formed by a voltage difference between the first longitudinal signal line40and the second longitudinal signal line50and the first common electrode80located in the length direction of the opposite two sides of the first pixel electrode10cannot make liquid crystal molecules deflect significantly.

The pixel structure provided by this application includes: the first pixel electrode10, the second pixel electrode20, the transverse signal line30, the first longitudinal signal line40, and the second longitudinal signal line50. The first pixel electrode10includes the first main pixel area11and the first sub-pixel area12. The second pixel electrode20is arranged in alternation with the first pixel electrode10in the first direction X and includes the second main pixel area21and the second sub-pixel area22. The transverse signal line30is located between the first main pixel area11and the first sub-pixel area12and between the second main pixel area21and the second sub-pixel area22. The first longitudinal signal line40includes the first main line41and the first secondary-line42. The second longitudinal signal line50includes the second main line51and the second secondary-line52. Specifically, electrical signals on the first longitudinal signal line40and the second longitudinal signal line50are opposite. The first main line41and the second main line51are both disposed in the first main pixel area11, and the first secondary-line42and the second secondary-line52are both disposed in the first sub-pixel area12. In the pixel structure of the present application, the two data lines connected to the adjacent first pixel electrode10and the second pixel electrode20, respectively, are arranged in the pixel area of the first pixel electrode10in order to cancel the capacitive coupling between the first longitudinal signal line40and the second longitudinal signal line50and the first pixel electrode10, which is beneficial to eliminate vertical crosstalk and improve display performance.

As a specific embodiment of the present application, please refer toFIG.5andFIG.4.FIG.5is a second layout view of the pixel structure provided by an embodiment of the present application. This embodiment is an improvement for the above-mentioned embodiment. As shown inFIG.5, the embodiment of the present application provides a pixel structure200, wherein differences between the pixel structure200and the pixel structure100are as follows: the first pixel electrode10and the second pixel electrode20are alternately arranged in a second direction Y, the first longitudinal signal line40further includes a first sub-line43, one end of the first sub-line43is electrically connected to the first main line41, and the other end of the first sub-line43is electrically connected to the first secondary-line42; the second longitudinal signal line50further includes a second sub-line53, one end of the second sub-line53is electrically connected to the second main line51, and the other end of the second sub-line53is electrically connected to the second secondary-line52.

Specifically, the pixel structure200further includes a first pixel electrode10, a second pixel electrode20, a transverse signal line30, a first longitudinal signal line40, and a second longitudinal signal line50. The first pixel electrode10includes a first main pixel area11and a first sub-pixel area12. The second pixel electrode20is arranged in alternation with the first pixel electrode10in a first direction X and includes a second main pixel area21and a second sub-pixel area22. The transverse signal line30is located between the first main pixel area11and the first sub-pixel area12and extends in the first direction X. The first longitudinal signal line40includes a first main line41and a first secondary-line42. The second longitudinal signal line50includes a second main line51and a second secondary-line52. Specifically, each of the first main line41and the second main line51is arranged in the first main pixel area11, each of the first secondary-line42and the second secondary-line52is arranged in the first sub-pixel area12, and electrical signals on the first longitudinal signal line40and the second longitudinal signal line50are opposite.

In one embodiment of the present application, the transverse signal line30is located in a transistor circuit area TA, that is, the transistor circuit area TA is located between the first main pixel area11and the first sub-pixel area12, and is also located between the second main pixel area21and the second sub-pixel area22.

In one embodiment of the present application, the first longitudinal signal line40and the second longitudinal signal line50are parallel to each other, and the transverse signal line30is perpendicular to the first longitudinal signal line40and the second longitudinal signal line50. Further, the first longitudinal signal line40and the second longitudinal signal line50are symmetrical with respect to a center line of the first pixel electrode10. That is, a distance between the first longitudinal signal line40and the center line of the first pixel electrode10is equal to a distance between the second longitudinal signal line50and the center line of the first pixel electrode10. In this manner, it is beneficial to cancel the coupling of signal inversion between the first longitudinal signal line40and the second longitudinal signal line50on the first pixel electrode10, and both the first longitudinal signal line40and the second longitudinal signal line50are located in the main pixel area or the sub-pixel area of the first pixel electrode10. Therefore, a distance between the first longitudinal signal line40and the second longitudinal signal line50is shorter, which is beneficial to minimize the crosstalk of an image. In addition, it is beneficial to increase an area of an opening area AA of the first pixel electrode10or the second pixel electrode20by using space between the first pixel electrode10and the second pixel electrode20originally configured for placing data lines, thus improving an aperture ratio and increasing transmittance.

In one embodiment of the present application, the first longitudinal signal line40is electrically connected to one of the first pixel electrode10or the second pixel electrode20. The second longitudinal signal line50is electrically connected to the other of the first pixel electrode10or the second pixel electrode20. As shown inFIG.3, the first longitudinal signal lines40are electrically connected to the first pixel electrodes10in odd numbered rows, and the first longitudinal signal lines40are electrically connected to the second pixel electrodes20in even numbered rows; correspondingly, the second longitudinal signal lines50are electrically connected to the second pixel electrodes20in odd numbered rows, and the second longitudinal signal lines50are electrically connected to the first pixel electrodes10in even numbered rows. Specifically, the first pixel electrode10and the second pixel electrode20may be partially alternately arranged in the first direction X and the second direction Y, and may be partially alternately arranged in the first direction X (not shown). Those skilled in the art can modify the arrangement as needed, which is not limited in this application.

In one embodiment of the present application, please continue to refer toFIG.4. The pixel structure further includes the first shared electrode60and the second shared electrode70. The first shared electrode60is arranged along and overlapping the center line of the first pixel electrode10, and the second shared electrode70is arranged along and overlapping the center line of the second pixel electrode20. Specifically, the first longitudinal signal line40and the second longitudinal signal line50are symmetrical with respect to the first shared electrode60. In this fashion, the distance between the first longitudinal signal line40and the first shared electrode60is equal to the distance between the second longitudinal signal line50and the first shared electrode60, which is beneficial to the wiring layout and can further enhance the effect of canceling the coupling.

In one embodiment of this application, the first shared electrode60and the second shared electrode70receive different voltage signals, respectively. Furthermore, since the first longitudinal signal line40and the second longitudinal signal line50are disposed in the opening area AA of the first pixel electrode10or the second pixel electrode20, a problem of shading tends to occur, causing the brightness of the first pixel electrode10and the second pixel electrode20to be inconsistent. By connecting the first shared electrode60and the second shared electrode70with different voltage signals, respectively, the display brightness of the first pixel electrode10and the second pixel electrode20is adjusted, which is beneficial to prevent color shift and achieve brightness uniformity.

In one embodiment of the present application, the pixel structure further includes a short circuit detection module (not shown). Specifically, the data signal lines, that is, the first longitudinal line and the second longitudinal line, are located in a metal layer electrically connected to pins of the short circuit detection module.

In the pixel structure of the present application, the two data lines connected to the adjacent first pixel electrode10and the second pixel electrode20, respectively, are arranged in the pixel area of the first pixel electrode10in order to cancel the capacitive coupling between the first longitudinal signal line40and the second longitudinal signal line50and the first pixel electrode10, which is beneficial to eliminate vertical crosstalk and improve display performance.

Please refer toFIGS.6and7.FIG.6is a schematic structural view of a display panel300provided by an embodiment of the present application.FIG.7is a partial cross-sectional view taken along line A-A′ ofFIG.1. As shown inFIG.6, the present application provides the display panel300including a base substrate310and the above-mentioned pixel structure. The pixel structure is disposed on the base substrate310.

In the embodiment of the present application, as shown inFIG.6, the display panel300further includes a color filter substrate360disposed on a side of the pixel structure away from the base substrate310, and the pixel structure and a display medium350located between the base substrate310and the color filter substrate360.

In one embodiment of the present application, a material of the base substrate may be glass, quartz, organic polymer, or opaque/reflective material (e.g., conductive material, wafer, ceramic, or other applicable materials), or may be other applicable materials.

In one embodiment of the present application, the display medium350may include liquid crystal molecules, an electrophoretic display medium, or other applicable media. The display medium350in the following embodiments of the present invention takes liquid crystal molecules as an example, but is not limited thereto. In addition, the liquid crystal molecules in the embodiments of the present application are preferably, but not limited to, liquid crystal molecules that can be rotated or switched by a horizontal electric field or liquid crystal molecules that can be rotated or switched by a transverse electric field.

Specifically, as shown inFIG.7, the display panel300includes the base substrate310, and a first common electrode80, a second common electrode90, a first insulating layer320, a first longitudinal signal line40, a second longitudinal signal line50, a second insulating layer330, a first shared electrode60, a second shared electrode70, a third insulating layer340, a first main pixel area11/first sub-pixel area12, a second main pixel area21/second sub-pixel area22all sequentially disposed on the base substrate310, and the color filter substrate360and a common electrode layer361disposed on the color filter substrate360. Specifically, a material of the first insulating layer320/the second insulating layer330/the third insulating layer340may be inorganic materials (for example: silicon oxide, silicon nitride, silicon oxynitride, or a stack layer of at least two of the above materials), organic materials, or a combination of the above.

The present application provides the pixel structure and the display panel300. The pixel structure includes the first pixel electrode10, the second pixel electrode20, the transverse signal line30, the first longitudinal signal line40, and the second longitudinal signal line50. The first pixel electrode10includes the first main pixel area11and the first sub-pixel area12. The second pixel electrode20is arranged in alternation with the first pixel electrode10in the first direction X and includes the second main pixel area21and the second sub-pixel area22. The transverse signal line30is located between the first main pixel area11and the first sub-pixel area12and between the second main pixel area21and the second sub-pixel area22. The first longitudinal signal line40includes the first main line41and the first secondary-line42. The second longitudinal signal line50includes the second main line51and the second secondary-line52. Specifically, electrical signals on the first longitudinal signal line40and the second longitudinal signal line50are opposite. The first main line41and the second main line51are both disposed in the first main pixel area11, and the first secondary-line42and the second secondary-line52are both disposed in the first sub-pixel area12. In the pixel structure of the present application, the two data lines connected to the adjacent first pixel electrode10and the second pixel electrode20, respectively, are arranged in the pixel area of the first pixel electrode10in order to cancel the capacitive coupling between the first longitudinal signal line40and the second longitudinal signal line50and the first pixel electrode10, which is beneficial to eliminate vertical crosstalk and improve display performance.

The display panel may be any product or component with the display function, such as electronic paper, mobile phones, tablet computers, televisions, monitors, notebook computers, digital photo frames, navigators, etc.

The above describes in detail the pixel structure and the display panel provided by the embodiments of the present application. Specific examples are used in this article to illustrate the principles and implementation of the application, and the descriptions of the above examples are only used to help understand the methods and core ideas of the10application; In addition, for those skilled in the art, according to the idea of the application, there will be changes in the specific implementation and the scope of application. In summary, the content of this specification should not be construed as a limitation of the application.