CN109326631B

CN109326631B - Display panel and display device

Info

Publication number: CN109326631B
Application number: CN201811156385.5A
Authority: CN
Inventors: 李波; 胡天庆; 曹兆铿
Original assignee: Wuhan Tianma Microelectronics Co Ltd
Current assignee: Wuhan Tianma Microelectronics Co Ltd
Priority date: 2018-09-30
Filing date: 2018-09-30
Publication date: 2021-03-16
Anticipated expiration: 2038-09-30
Also published as: CN109326631A

Abstract

The invention discloses a display panel and a display device. A display panel comprising a display area, the display area comprising: a plurality of sub-pixels arranged in an array; a plurality of signal lines including a first signal line and a second signal line, the number of sub-pixels electrically connected to the first signal line being smaller than the number of sub-pixels electrically connected to the second signal line; a compensation capacitor for increasing a load on the first signal line; the compensation capacitor comprises a compensation polar plate, the compensation polar plate and the first signal line are arranged in different layers and have an overlapped part with the first signal line; the display area also comprises a fixed potential line, and the compensation polar plate is arranged in a different layer with the fixed potential line and has an overlapped part with the fixed potential line; the compensation polar plate is electrically connected with one of the first signal line and the fixed potential line, and the compensation polar plate is arranged in an insulated way with the other one of the first signal line and the fixed potential line. The invention can improve the problem of uneven display of the display panel, ensure the uniformity of display of the display panel and improve the display effect.

Description

Display panel and display device

Technical Field

The present invention relates to the field of display technologies, and in particular, to a display panel and a display device.

Background

With the continuous development of display technology, not only the requirements on the display function of the display device are higher and higher, but also the requirements on the shape are gradually increased in order to better adapt to the overall structure and the use requirements of the display device, so that the special-shaped display panel is generated. A conventional display panel has a rectangular shape, a display area is also substantially rectangular, a non-rectangular display panel is a non-rectangular display panel, and a non-rectangular display area is also non-rectangular, for example, a display area is circular or a display panel with a notch in the display area.

In the irregular display panel, the shape of the display panel is irregular, the wiring manner of the signal lines is different from that of a conventional display panel, and the signal lines are generally required to be arranged to adapt to the shape of the display panel, so that the number of sub-pixels electrically connected to different signal lines in a display area of the display panel is different, impedance difference exists between different signal lines, and areas with brightness difference exist in the display panel, display is uneven, and the display effect of the display panel is affected.

Therefore, it is an urgent need in the art to provide a display panel and a display device that can improve the display non-uniformity and improve the display effect.

Disclosure of Invention

In view of the above, the present invention provides a display panel and a display device, which solve the technical problems of improving the display non-uniformity and improving the display effect.

In a first aspect, the present invention provides a display panel comprising a display area, the display area comprising:

a plurality of sub-pixels arranged in an array;

a plurality of signal lines including a first signal line and a second signal line, the number of sub-pixels electrically connected to the first signal line being smaller than the number of sub-pixels electrically connected to the second signal line;

a compensation capacitor for increasing a load on the first signal line;

the compensation capacitor comprises a compensation polar plate, the compensation polar plate and the first signal line are arranged in different layers and have an overlapped part with the first signal line;

the display area also comprises a fixed potential line, and the compensation polar plate is arranged in a different layer with the fixed potential line and has an overlapped part with the fixed potential line;

the compensation polar plate is electrically connected with one of the first signal line and the fixed potential line, and the compensation polar plate is arranged in an insulated way with the other one of the first signal line and the fixed potential line.

In a second aspect, the present invention provides a display device including any one of the display panels proposed in the present invention.

Compared with the prior art, the display panel and the display device provided by the invention at least realize the following beneficial effects:

according to the invention, the compensation polar plate is arranged in the display area, the compensation polar plate and the first signal line and the fixed potential line are arranged in different layers, and the compensation polar plate and the first signal line and the fixed potential line are overlapped. The compensation electrode plate is connected to the first signal line, and a compensation capacitor is formed in the area where the compensation electrode plate and the fixed potential line are overlapped; or the compensation polar plate is connected to the fixed potential line, a compensation capacitor is formed in the area where the compensation polar plate and the first signal line are overlapped, and the compensation polar plate is used as a bridging part, so that the arrangement influence on the first signal line and the fixed potential line is reduced; the compensation capacitor compensates the first signal line, increases the overall load on the first signal line, and makes the overall load on the first signal line and the second signal line approximately the same, thereby improving the problem of uneven display of the display panel, ensuring the uniformity of display of the display panel and providing the display effect. In addition, the compensation polar plate is positioned in the display area, namely the compensation of the upper load of the first signal line in the display area is realized, the space of a non-display area in the display panel is not occupied, and the screen occupation ratio of the display panel is not influenced.

Of course, it is not necessary for any product in which the present invention is practiced to achieve all of the above-described technical effects simultaneously.

Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.

Fig. 1 is a schematic top view of a display panel according to an embodiment of the present invention;

fig. 2 is a schematic diagram of an alternative implementation of a display panel according to an embodiment of the present invention;

fig. 3 is a schematic diagram of another alternative implementation of the display panel according to the embodiment of the present invention;

FIG. 4 is a schematic cross-sectional view taken at line Q1 of FIG. 1;

FIG. 5 is another schematic cross-sectional view taken at line Q1 of FIG. 1;

fig. 6 is a film structure diagram of an alternative implementation of a display panel according to an embodiment of the present invention;

FIG. 7 is a schematic diagram of power lines of an alternative embodiment of a display panel according to an embodiment of the invention;

FIG. 8 is a schematic partial cross-sectional view of an alternative embodiment of a display panel according to an embodiment of the present invention;

FIG. 9 is a schematic partial cross-sectional view of another alternative embodiment of a display panel according to an embodiment of the present invention;

FIG. 10 is a schematic diagram of film layers of another alternative embodiment of a display panel according to an embodiment of the present invention;

FIG. 11 is a schematic diagram of another alternative embodiment of a display panel according to an embodiment of the present invention;

FIG. 12 is a schematic diagram of another alternative embodiment of a display panel according to an embodiment of the present invention;

FIG. 13 is a schematic diagram of another alternative embodiment of a display panel according to an embodiment of the present invention;

FIG. 14 is a cross-sectional view of the non-display area of the notch at the position along the tangent line Q1 in FIG. 13;

fig. 15 is a schematic diagram of another alternative implementation of the display panel according to the embodiment of the present invention

FIG. 16 is a schematic diagram of another alternative embodiment of a display panel according to an embodiment of the present invention;

FIG. 17 is a schematic diagram of another alternative embodiment of a display panel according to an embodiment of the present invention;

FIG. 18 is a schematic view of a display device according to an embodiment of the present invention;

fig. 19 is a schematic diagram of an alternative implementation of a display device according to an embodiment of the present invention.

Detailed Description

Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.

The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.

In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

The invention provides a display panel, which is characterized in that a compensation capacitor is arranged in a display area to increase the load on a signal line with a small number of electrically connected sub-pixels, thereby ensuring that the load on each signal line in the display panel is approximately the same, improving the phenomenon of uneven display and improving the display effect.

Fig. 1 is a schematic top view of a display panel according to an embodiment of the present invention, fig. 2 is a schematic diagram of an alternative implementation of the display panel according to the embodiment of the present invention, and fig. 3 is a schematic diagram of another alternative implementation of the display panel according to the embodiment of the present invention. Fig. 4 is a schematic view of a cross section at the position of a tangent line Q1 in fig. 1, and fig. 5 is another schematic view of a cross section at the position of a tangent line Q1 in fig. 1.

As shown in fig. 1, the display panel includes a display area AA, and the display area AA includes: a plurality of sub-pixels sp arranged in an array; and a plurality of signal lines X including a first signal line X1 and a second signal line X2, wherein the number of sub-pixels sp electrically connected to the first signal line X1 is smaller than the number of sub-pixels sp electrically connected to the second signal line X2. The shape of the display panel in fig. 1 is only schematically shown, the display panel provided by the present invention may also be the display panel with a rounded corner R in the display area AA shown in fig. 2, the first signal line X1 is adjacent to the rounded corner R, the number of sub-pixels sp electrically connected to the first signal line X1 is smaller than the number of sub-pixels sp electrically connected to the second signal line X2, and the display area AA may have four corners all having rounded corners R, or only a part of the corners having rounded corners R. The display panel provided by the present invention may also be the display panel with the notch K in the display area AA shown in fig. 3, the first signal line X1 is adjacent to the notch K, the number of sub-pixels sp electrically connected to the first signal line X1 is smaller than the number of sub-pixels sp electrically connected to the second signal line X2, the notch K in the display area AA may be located on the upper side of the display area AA shown in fig. 3, or the notch K may be located on the left side or the right side of the display area AA. In short, the scheme provided by the present invention can be used for load compensation as long as the signal lines having different numbers of sub-pixels electrically connected in the display region are provided.

Continuing with the example of the display panel shown in fig. 1, referring to fig. 1, the display area AA further includes a compensation capacitor for increasing the load on the first signal line X1; the compensation capacitor comprises a compensation polar plate C1, the compensation polar plate C1 and the first signal line X1 are arranged in different layers and have an overlapped part with the first signal line X1, namely the compensation polar plate C1 and the first signal line X1 are positioned on different film layers of the display panel, the manufacture is completed in different process procedures, and the compensation polar plate C1 and the first signal line X1 are partially overlapped in the direction vertical to the display panel; the display area AA further includes a fixed potential line GX, the compensation plate C1 is disposed in a different layer from the fixed potential line GX, and has an overlapping portion with the fixed potential line GX, that is, the compensation plate C1 and the fixed potential line GX are disposed on different film layers of the display panel, and are manufactured in different processes, and in a direction perpendicular to the display panel, the compensation plate C1 is partially overlapped with the fixed potential line GX; the compensation plate C1 is electrically connected to one of the first signal line X1 and the fixed potential line GX, and the compensation plate C1 is provided in insulation from the other of the first signal line X1 and the fixed potential line GX. Note that the extending direction of the first signal line X1, the extending direction of the fixed potential line GX, the relative position of the first signal line X1 and the fixed potential line GX, the installation position of the compensation plate C1, and the number of the compensation plates C1 in fig. 1 are merely schematic representations, and are not intended to limit the present invention.

In one embodiment, fig. 4 is a schematic cross-sectional view of a partial region of the display panel, and as shown in fig. 4, the compensation plate C1 is electrically connected to the first signal line X1, the compensation plate C1 is insulated from the fixed potential line GX, and the potential on the compensation plate C1 is the same as the potential on the first signal line X1, so that a compensation capacitor C can be formed in a region where the compensation plate C1 and the fixed potential line GX overlap with each other, and the compensation capacitor C can increase the load on the first signal line X1. In the manner of forming the compensation capacitor C to increase the load on the first signal line X1, one compensation plate C1 may be electrically connected to one first signal line X1, or a plurality of compensation plates C1 may be electrically connected.

In another embodiment, fig. 5 is a schematic cross-sectional view of a partial region of the display panel, and as shown in fig. 5, the compensation plate C1 is electrically connected to the fixed potential line GX, the compensation plate C1 is disposed to be insulated from the first signal line X1, and the potential on the compensation plate C1 is the same as the potential on the fixed potential line GX, so that a compensation capacitor C can be formed in a region where the compensation plate C1 and the first signal line X1 overlap with each other, and the compensation capacitor C can increase the load on the first signal line X1. In a manner of forming such a compensation capacitor C to increase the load on the first signal line X1, one compensation plate C1 may be overlapped on one first signal line X1, or a plurality of compensation plates C1 may be overlapped on the other.

In the invention, the compensation polar plate is arranged in a different layer from the first signal line, and the compensation polar plate is arranged in a different layer from the fixed potential line. The first signal line and the fixed potential line may be disposed in the same layer or in different layers. Fig. 4 and 5 are schematic diagrams showing an example in which only the first signal line and the fixed potential line are provided in the same layer. The signal line X in the present invention may be a data line in the display panel or a scan line in the display panel, that is, the technical solution provided by the present invention can be applied to load compensation for the data line in the display panel and also applied to load compensation for the scan line in the display panel.

The signal lines of the display area in the display panel provided by the invention comprise first signal lines and second signal lines, wherein the number of the sub-pixels electrically connected with the first signal lines is less than that of the sub-pixels electrically connected with the second signal lines, and the load generated on the first signal lines due to the electrically connected sub-pixels is less than that generated on the second signal lines due to the electrically connected sub-pixels. According to the invention, the compensation polar plate is arranged in the display area, the compensation polar plate and the first signal line and the fixed potential line are arranged in different layers, and the compensation polar plate and the first signal line and the fixed potential line are overlapped. The compensation electrode plate is connected to the first signal line, and a compensation capacitor is formed in the area where the compensation electrode plate and the fixed potential line are overlapped; or the compensation polar plate is connected to the fixed potential line, a compensation capacitor is formed in the area where the compensation polar plate and the first signal line are overlapped, and the compensation polar plate is used as a bridging part, so that the arrangement influence on the first signal line and the fixed potential line is reduced; the compensation capacitor compensates the first signal line, increases the overall load on the first signal line, and makes the overall load on the first signal line and the second signal line approximately the same, thereby improving the problem of uneven display of the display panel, ensuring the uniformity of display of the display panel and providing the display effect. In addition, the compensation polar plate is positioned in the display area, namely the compensation of the upper load of the first signal line in the display area is realized, the space of a non-display area in the display panel is not occupied, and the screen occupation ratio of the display panel is not influenced.

The display panel provided by the invention can be an organic light-emitting display panel, the display panel comprises a plurality of organic light-emitting devices, one sub-pixel comprises one organic light-emitting device, the display panel comprises a plurality of power lines, the power lines provide light-emitting signals for the organic light-emitting devices, constant voltage signals are generally introduced into the power lines, and the power lines comprise an anode power line and a cathode power line. Optionally, the fixed potential line in the display panel provided by the invention is a power line. Fig. 6 is a film structure diagram of an alternative implementation of a display panel according to an embodiment of the present invention, and fig. 7 is a power line schematic diagram of an alternative implementation of a display panel according to an embodiment of the present invention.

As shown in fig. 6, the display panel at least includes a substrate base plate 101, an array layer 102 and a display layer 103, and an encapsulation layer 104 may be further disposed on the display layer 103. The array layer 102 includes a plurality of thin film transistors T, the thin film transistors T are used as switching devices of sub-pixels in the display panel, the thin film transistors T include an active layer T1, a gate T2, a source T3, and a drain T4, only one thin film transistor with a top gate structure is shown in fig. 6, and the thin film transistors of the array layer may also be a bottom gate structure, which is not described herein. The display layer 103 includes a plurality of organic light emitting devices 1031, the organic light emitting devices 1031 including an anode a, a light emitting layer b, and a cathode c in a stacked arrangement, wherein a source electrode T3 or a drain electrode T4 of the thin film transistor T is connected to the anode a. After voltage is applied to the anode a and the cathode c, electrons and holes are respectively injected into the luminescent layer b from the cathode c and the anode a, and energy is released in the form of light energy after the electrons and the holes are compounded, so that the luminescent device emits light. Taking the display panel shown in fig. 6 as an example, in order to realize the light emission of the organic light emitting device 1031, the anode a is applied with the first voltage signal, and the cathode c is applied with the second voltage signal. Alternatively, the positive power line in the display panel applies the first voltage signal to the anode through the thin film transistor, and the negative power line in the display panel applies the second voltage signal to the cathode. As shown in fig. 7, in a normal case, the positive power line ZX is routed in the display area AA of the display panel, and the negative power line FX is disposed in the non-display area BA of the display panel around the display area AA, both the positive power line ZX and the negative power line FX being electrically connected to a driving chip (not shown) of the display panel. Fig. 7 is only schematically illustrated with a display panel of an alternative shape.

In some alternative embodiments, the fixed potential line comprises a first power line, and the load on the first signal line is increased by providing a compensation plate in the display area to be connected to the first power line, the compensation plate being in insulating overlap with the first signal line to form a compensation capacitor, thereby achieving substantially the same overall load on the first signal line and the second signal line; or the compensation plate is arranged in the display area and connected to the first signal line, and the compensation plate and the first power line are overlapped in an insulating mode to form a compensation capacitor, so that the load on the first signal line is increased, and the overall load on the first signal line and the second signal line is approximately the same. The following examples illustrate this embodiment in detail.

In an embodiment, fig. 8 is a partial cross-sectional schematic view of an alternative implementation of a display panel according to an embodiment of the invention. As shown in fig. 8, the fixed potential line GX includes a first power supply line GX1, the first power supply line GX1 supplying a constant voltage signal to the sub-pixel sp; the first signal line X1 is connected to the compensation plate C1 through the second via hole P2, the first power line GX1 is overlapped with the compensation plate C1 in an insulating manner to form a compensation capacitor C, and the compensation capacitor C can increase the load on the first signal line X1, so that the overall load on each signal line in the display panel is substantially the same, and the display uniformity of the display panel is ensured. Alternatively, the first power supply line GX1 may be the positive power supply line ZX shown in fig. 7.

In another embodiment, fig. 9 is a partial cross-sectional schematic view of another alternative implementation of a display panel according to an embodiment of the present invention. As shown in fig. 9, the fixed potential line GX includes a first power supply line GX1, the first power supply line GX1 supplying a constant voltage signal to the sub-pixel sp; the first power line GX1 is connected with the compensation polar plate C1 through the third via hole P3, the first signal line X1 and the compensation polar plate C1 are overlapped in an insulating mode to form a compensation capacitor C, and the compensation capacitor C can increase the load on the first signal line X1, so that the overall load on each signal line in the display panel is approximately the same, and the display uniformity of the display panel is guaranteed.

The above-mentioned fig. 8 and 9 only illustrate that the compensation pad C1 overlaps one of the first power line GX1 and the first signal line X1, respectively, and then the compensation pad C1 is connected to the other of the first power line GX1 and the first signal line X1 through a via hole to form a compensation capacitor. The positions of the film layers in fig. 8 and 9 are only schematically shown, and the first power line GX1 and the first signal line X1 may be disposed in the same layer or in different layers. The film positions of various traces in the display panel will be illustrated below.

The display panel is a multi-film layer structure, and various traces in the display panel are usually disposed in the array layer 102 shown in fig. 6, so the compensation plate C1, the signal line X and the fixed potential line GX in the present invention are all located in the array layer 102. The compensation polar plate C1 and the first signal line X1 are arranged in different layers, and the compensation polar plate C1 and the fixed potential line GX are arranged in different layers. The signal lines X may be data lines or scan lines. When the signal line X is a data line, the signal line X is disposed in the same layer as the source T3 and the drain T4 shown in fig. 6 in the display panel, that is, the first signal line X1 and the second signal line X2 are both fabricated in the same process as the source T3 and the drain T4; when the signal line X is a scan line, the signal line X and the gate T2 shown in fig. 6 are disposed in the same layer in the display panel, i.e., the first signal line X1 and the second signal line X2 are both fabricated in the same process as the gate T2.

The fixed potential line GX includes a first power supply line GX 1. The first power line GX1 is generally disposed at the same level as the source and drain electrodes T3 and T4 as a power line in the display panel.

The compensation plate C1, which is an important structure for forming the compensation capacitor in the present invention, can be disposed in the same layer as some devices in the display panel, or can be fabricated by adding a separate process during the fabrication.

Optionally, the compensation plate C1 is located on the same film as the plate of the pixel capacitor. Fig. 10 is a film diagram of another alternative implementation of the display panel according to the embodiment of the present invention, as shown in fig. 10, the display panel includes a capacitor metal layer 102C, the capacitor metal layer 102C is used for manufacturing a plate of a pixel capacitor, and the compensation plate C1 and the plate of the pixel capacitor are located in the same film. The organic light-emitting display panel comprises a pixel capacitor, and the charging and discharging of the pixel capacitor realizes the maintenance of the brightness of the sub-pixel. The pixel capacitor includes two plates, one of the two plates shares the gate T2 of the tft T, and the other plate is made of the capacitor metal layer 102C, which is not shown in the figure. When the display panel is manufactured, the compensation polar plate and the polar plate of the pixel capacitor can be manufactured in the same process, which is beneficial to simplifying the process of the display panel. Fig. 10 is only illustrated in a case that the compensation plate C1 is electrically connected to the fixed potential line GX, and the compensation plate C1 overlaps the first signal line X1 to form a compensation capacitor, and the case that the compensation plate is electrically connected to the first signal line is not described herein again.

Fig. 11 is a schematic diagram of another alternative implementation of the display panel according to the embodiment of the present invention. As shown in fig. 11, in the display area AA, the extending direction of the signal line X is the same as the extending direction of the first power line GX 1; the sub-pixel sp comprises a first sub-pixel sp1 and a second sub-pixel sp2 which are adjacent; the first power line GX1 provides a signal to the first sub-pixel sp1, and the first signal line X1 provides a signal to the second sub-pixel sp 2. In this embodiment, the compensation pad C1 is provided to overlap with the first power line GX1 and the first signal line X1 of the signals supplied to the adjacent two sub-pixels sp, respectively, and then a compensation capacitance is formed by connecting the compensation pad C1 to the first power line GX1 or connecting the compensation pad C1 to the first signal line X1 to increase the load on the first signal line X1. When setting up the compensation polar plate in display panel, the compensation polar plate all has the overlap with first signal line and first power cord, it is nearer with first power cord distance for two adjacent sub-pixels provide the first signal line of signal when carrying out circuit wiring in the display panel, need not do the compensation polar plate of wire winding design or setting up longer distance under this kind of circumstances and just can realize the compensation to the electric capacity of first signal line, the area that the compensation polar plate that sets up occupied in display panel is less, the compensation polar plate that increases influences lessly to holistic circuit layout in the display panel. In one embodiment, the first power lines GX1 and the first signal lines X1 may be alternately arranged, the first power lines GX1 are respectively adjacent to the two first signals X1, and one first signal line X1 with a smaller distance from the first power line GX1 and the first power line GX1 correspond to different sub-pixels sp.

The scheme that the load on the signal line is increased by arranging the compensation capacitor in the display area of the display panel provided by the invention can be suitable for various special-shaped display panels (display panels with non-rectangular display areas), and the compensation mode provided by the invention can be adopted to carry out capacitance compensation on the data line or the scanning line in the display panel. The following examples will illustrate the display panel provided by the present invention in detail, and the display panel provided by the present invention includes, but is not limited to, the following embodiments.

In some alternative embodiments, the display panel includes a plurality of data lines extending in a first direction, the data lines providing data signals to the subpixels; the data lines are signal lines, the first signal lines are first data lines, and the second signal lines are second data lines.

Optionally, when capacitance compensation is performed on the first data line in the display panel to increase the load, a technical scheme corresponding to the embodiment shown in fig. 11 may be selected, and the first power line and the first data line, which respectively provide signals for two adjacent sub-pixels, are generally disposed adjacent to each other in the display panel. By adopting the embodiment to carry out capacitance compensation, the area occupied by the compensation electrode plate in the display panel is smaller, and the influence of the added compensation electrode plate on the overall circuit layout in the display panel is smaller.

Fig. 12 is a schematic diagram of another alternative implementation of the display panel according to the embodiment of the present invention. As shown in fig. 12, the display area AA has a first gap K1, and the display area AA includes a first display area AA1 and a second display area AA2, wherein two first display areas AA1 are respectively located at both sides of the first gap K1 in the second direction f, and the second display area AA2 is adjacent to both the first gap K1 and the first display area AA1 in the first direction e, and the first direction e intersects with the second direction f; the data lines D extend in the first direction e, the data lines include a first data line D1 and a second data line D2, and the number of sub-pixels sp electrically connected to the first data line D1 is smaller than the number of sub-pixels sp electrically connected to the second data line D2. The first data line D1 is located in the second display area AA2, and the second data line D2 includes a partial line segment located in the first display area AA1 and a partial line segment located in the second display area AA 2; the compensation capacitor C is located in the second display area AA 2. In this embodiment, the capacitance compensation is performed on the first data line D1 located in the second display area AA2, so as to increase the overall load on the first data line D1, thereby ensuring that the overall load on the first data line D1 and the overall load on the second data line D2 are substantially the same, and improving the display panel display non-uniformity problem.

It should be noted that fig. 12 only schematically illustrates the position of the compensation capacitor C, and for the manner of forming the compensation capacitor C, reference may be made to the embodiments corresponding to fig. 8 and fig. 9. In addition, various parameters of the two first display areas AA located at both sides of the first notch K1 may be the same or different.

Fig. 13 is a schematic diagram of another alternative implementation of the display panel according to the embodiment of the present invention. As shown in fig. 13, the display area AA has a second gap K2, and the display area AA includes a third display area AA3 and a fourth display area AA4, wherein two third display areas AA3 are respectively located at both sides of the second gap K2 in the first direction e, the fourth display area AA4 is adjacent to both the second gap K2 and the third display area AA3 in the second direction f, and the first direction e intersects with the second direction f; the first data line D1 is located in the third display area AA3, and the second data line D2 is located in the fourth display area AA 4; the compensation capacitor C is located in the third display area AA 3. The position of the second notch K2 in fig. 13 is only schematically shown, and various parameters of the two third display areas AA3 located at both sides of the second notch K2 may be the same or different. In this embodiment, the first data line D1 in the third display area AA3 is compensated by capacitance to increase the overall load on the first data line D1, so as to ensure that the overall load on the first data line D1 and the second data line D2 are substantially the same, thereby improving the display panel display non-uniformity problem.

As shown with continued reference to fig. 13, the display panel further includes a non-display area BA surrounding the display area AA, the non-display area BA including a notched non-display area BA1 semi-surrounding the second notch K2; be provided with many connecting wires L in the breach non-display area BA1, be located second breach K2 both sides, and be located two first data lines D1 of same column and be connected through a connecting wire L, connecting wire L has certain impedance when transmission signal, and connecting wire L can further increase the load on the first data line D1.

Alternatively, fig. 14 is a schematic cross-sectional view of the non-display area of the notch at the position along the tangent line Q1 in fig. 13. As shown in fig. 14, the connecting lines L include a first connecting line L1 and a second connecting line L2 at different film layers. Fig. 13 only shows two connection lines L, in practice, the number of the connection lines L disposed in the notch non-display area BA1 is larger, and in this embodiment, the connection lines L are divided into a first connection line L1 and a second connection line L2, which are disposed in different film layers, and the first connection line L1 and the second connection line L2 are fabricated in different processes, so that the distance between the first connection line L1 and the second connection line L2 in the second direction f can be reduced, the space occupied by the connection lines L disposed in the notch non-display area BA1 is reduced, and the narrowing of the notch non-display area BA1 is facilitated.

Fig. 15 is a schematic diagram of another alternative implementation of the display panel according to the embodiment of the present invention. Fig. 15 is a simplified schematic diagram, which does not show the sub-pixels of the display region, as shown in fig. 15, the two first data lines D1 located at two sides of the second notch K2 and located in the same column are connected by a connecting line L, which includes a first connecting line L1 and a second connecting line L2 located at different layers. The first connecting line L1 and the first data line D1 are located on the same layer, and the first connecting line L1 is directly connected to the first data line D1; the second connection line L2 is connected to the first data line D1 through a first via P1, and the first via P1 is located in the non-display region. When the display panel is manufactured, the first connecting line and the first data line can be manufactured in the same process, the second connecting line is connected to the corresponding first data line through the first through hole, and the second connecting line and the first connecting line are manufactured in different process, so that the second connecting line and the second connecting line can be partially overlapped in the direction perpendicular to the display panel, and the space occupied by the connecting line in the gap non-display area can be further reduced.

The first connecting line and the second connecting line are manufactured in different process procedures, and the manufacturing materials of the first connecting line and the second connecting line can be the same or different. Preferably, the first connecting line and the second connecting line are made of the same material, so that the impedances of the first connecting line and the second connecting line are approximately the same, and the impedance difference between the first data line and the second data line respectively connected with the first connecting line and the second connecting line in the display panel is reduced.

Fig. 16 is a schematic diagram of another alternative implementation of the display panel according to the embodiment of the present invention. As shown in fig. 16, the display area has two second gaps K2 and two gap non-display areas BA1, and the display area includes three third display areas AA 3; three third display areas AA3, respectively, and in the three first data lines D1 of the same column: the first data line D1 adjacent to both of the two second notches K2 is connected to the other two first data lines D1 through the first connecting line L1 and the second connecting line L2, respectively. In this embodiment, the first connecting line and the second connecting line are arranged in the notch non-display area to realize the electrical connection between the two first data lines on the two sides of the notch, which can be beneficial to the narrowing of the notch non-display area. Meanwhile, the three first data lines which are positioned in the third non-display area and positioned in the same row in the display panel are electrically connected through the two connecting lines, wherein the two connecting lines are respectively the first connecting line and the second connecting line, so that the impedance difference between the first connecting line and the second connecting line which are manufactured in different process procedures can be avoided, the load difference between the first data lines positioned in different rows can be avoided, and the phenomenon of uneven display can be avoided.

In some alternative embodiments, the display panel includes a plurality of scan lines extending in the second direction, the scan lines providing scan signals to the sub-pixels, and the scan lines being signal lines. Fig. 17 is a schematic diagram of another alternative implementation of the display panel according to the embodiment of the present invention. Fig. 17 is only schematically illustrated in the shape of the display panel shown in fig. 12.

As shown in fig. 17, the display area AA has a first gap K1, and the display area AA includes a first display area AA1 and a second display area AA2, wherein two first display areas AA1 are respectively located at both sides of the first gap K1 in the second direction f, and the second display area AA2 is adjacent to both the first gap K1 and the first display area AA1 in the first direction e, and the first direction e intersects with the second direction f; the display panel includes a plurality of scan lines G extending in the second direction f, the scan lines G including a first scan line G1 and a second scan line G2, the number of sub-pixels sp electrically connected to the first scan line G1 being smaller than the number of sub-pixels sp electrically connected to the second scan line G2. The first scan line G1 is located in the first display area AA1, the second scan line G2 is located in the second display area AA2, and the compensation capacitor C is located in the first display area AA 1. In this embodiment, the first scan line G1 in the first display area AA1 is compensated by capacitance to increase the overall load on the first scan line G1, so as to ensure that the overall load on the first scan line G1 and the second scan line G2 are substantially the same, thereby improving the display panel display non-uniformity problem.

The description of the capacitance compensation for the scan lines in the display panel in the embodiment corresponding to fig. 13 and fig. 16 is omitted here.

Fig. 18 is a schematic view of a display device according to an embodiment of the present invention. As shown in fig. 18, the display device includes a display panel 100 provided in any embodiment of the present invention. The display device provided by the embodiment of the invention can be any electronic product with a flexible display function, including but not limited to the following categories: the mobile terminal comprises a television, a notebook computer, a desktop display, a tablet computer, a digital camera, a mobile phone, an intelligent bracelet, intelligent glasses, a vehicle-mounted display, medical equipment, industrial control equipment, a touch interaction terminal and the like.

Fig. 19 is a schematic diagram of an alternative implementation of a display device according to an embodiment of the present invention. Fig. 19 is a schematic diagram showing an unfolded state of the display device, as shown in fig. 19, the display device includes two display surfaces AB and at least one side display surface F connecting the a surface and the B surface, and each display surface of the display device is a complete flexible display panel. The display device can be bent along the side display surface F, and the surface A and the surface B are respectively arranged on two opposite sides. The A-side display surface of the display device is full-screen display, component areas such as a camera and a sensor are reserved on the B-side display surface, and the B-side display surface can contain an electronic paper display area Z. And information such as time, date, weather, mobile phone signals, electric quantity and the like can be displayed in the electronic paper display area Z.

As can be seen from the above embodiments, the display panel and the display device provided by the present invention at least achieve the following beneficial effects:

Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims

1. A display panel comprising a display area, the display area comprising:

a plurality of sub-pixels arranged in an array;

a plurality of signal lines including a first signal line and a second signal line, the number of the sub-pixels electrically connected with the first signal line being smaller than the number of the sub-pixels electrically connected with the second signal line;

a compensation capacitor for increasing a load on the first signal line;

the compensation capacitor comprises a compensation polar plate, and the compensation polar plate and the first signal line are arranged in different layers and have overlapped parts;

the display area further comprises a fixed potential line, and the first signal line and the fixed potential line are arranged in the same layer or different layers;

the compensation polar plate is arranged in a different layer with the fixed potential line and has an overlapped part with the fixed potential line;

the compensation plate is electrically connected with one of the first signal line and the fixed potential line, and the compensation plate is insulated from the other of the first signal line and the fixed potential line.

2. The display panel according to claim 1,

the display panel comprises a plurality of data lines extending along a first direction, and the data lines provide data signals for the sub-pixels;

the data line is the signal line, the first signal line is a first data line, and the second signal line is a second data line.

3. The display panel according to claim 2,

the display area is provided with a first gap and comprises a first display area and a second display area, wherein the two first display areas are respectively positioned at two sides of the first gap in a second direction, the second display area is adjacent to the first gap and the first display area in the first direction, and the first direction is crossed with the second direction;

the first data line is positioned in the second display area, and the second data line comprises a partial line segment positioned in the first display area and a partial line segment positioned in the second display area;

the compensation capacitor is located in the second display area.

4. The display panel according to claim 2,

the display area is provided with a second gap and comprises a third display area and a fourth display area, wherein the two third display areas are respectively positioned at two sides of the second gap in the first direction, the fourth display area is adjacent to the second gap and the third display area in the second direction, and the first direction is crossed with the second direction;

the first data line is located in the third display area, and the second data line is located in the fourth display area;

the compensation capacitor is positioned in the third display area.

5. The display panel according to claim 4,

the display panel further comprises a non-display area surrounding the display area, and the non-display area comprises a notch non-display area semi-surrounding the second notch;

a plurality of connecting lines are arranged in the gap non-display area, are positioned at two sides of the second gap, and are connected with two first data lines positioned in the same column through one connecting line; wherein the content of the first and second substances,

the connecting lines comprise a first connecting line and a second connecting line which are positioned on different film layers.

6. The display panel according to claim 5,

the first connecting line and the first data line are positioned on the same film layer, and the first connecting line is directly connected with the first data line;

the second connecting line is connected with the first data line through a first via hole.

7. The display panel according to claim 5,

the display area is provided with two second gaps and two gap non-display areas, and the display area comprises three third display areas;

the first data lines are respectively positioned in the three third display areas and in the same column: the first data lines adjacent to the two second gaps are connected with the other two first data lines through the first connecting lines and the second connecting lines respectively.

8. The display panel according to claim 1,

the display panel comprises a plurality of scanning lines extending along a second direction, the scanning lines provide scanning signals for the sub-pixels, and the scanning lines are the signal lines.

9. The display panel according to claim 1,

the fixed potential line comprises a first power line which provides a constant voltage signal for the sub-pixel;

the first signal line is connected with the compensation polar plate through a second through hole, and the first power line and the compensation polar plate are overlapped in an insulating mode to form the compensation capacitor; or the first power line is connected with the compensation polar plate through a third via hole, and the first signal line and the compensation polar plate are overlapped in an insulating mode to form the compensation capacitor.

10. The display panel according to claim 9,

in the display area, the extending direction of the signal line is the same as the extending direction of the first power line;

the sub-pixels comprise a first sub-pixel and a second sub-pixel which are adjacent;

the first power line provides a signal for the first sub-pixel, and the first signal line provides a signal for the second sub-pixel.

11. The display panel according to claim 1,

the display panel is an organic light-emitting display panel, and the sub-pixels comprise pixel capacitors;

the compensation polar plate and the polar plate of the pixel capacitor are positioned on the same film layer.

12. A display device characterized by comprising the display panel according to any one of claims 1 to 11.