CN107819023B - An organic light-emitting display panel and display device - Google Patents

Abstract

The invention discloses an organic light-emitting display panel and a display device, which are used for weakening the sawtooth phenomenon of the special-shaped edge of a special-shaped display panel and improving the display effect of the display panel near the special-shaped edge. This organic light emitting display panel is including having the display area of dysmorphism edge, and the display area includes first display area and the second display area that sets gradually along keeping away from special-shaped edge direction, and first display area includes a plurality of first sub-pixels that the array was arranged, and the second display area includes a plurality of pixel cell that the array was arranged, and every pixel cell includes the second sub-pixel of at least three kinds of colours, wherein: the second display area is provided with a plurality of pixel circuits, each second sub-pixel is electrically connected with the corresponding pixel circuit, and the first sub-pixel and the second sub-pixel with the same color share the same pixel circuit; the number of the first sub-pixels of the same color connected with the second sub-pixels of each color in the same pixel unit is the same.

Description

An organic light-emitting display panel and display device

technical field

The present invention relates to the field of display technology, and in particular, to an organic light-emitting display panel and a display device.

Background technique

OLED display panels have the advantages of thin, light, wide viewing angle, active light emission, continuously adjustable light emission color, low cost, fast response speed, low energy consumption, low driving voltage, wide operating temperature range, simple production process, high luminous efficiency and high reliability. Flexible display and many other advantages have been listed as a very promising next-generation display technology.

With the development of OLED technology, display devices gradually tend to have a narrow border or even no border. From the perspective of aesthetics and product quality, the shape of the display panel is no longer limited to regular shapes such as rectangles, or special application scenarios. Limited to regular shapes such as rectangles. Special-shaped display panels gradually appear in people's field of vision. For example, the four corners of the display panel are rounded, or a groove structure is arranged on the display panel to install devices such as an earphone and a camera, or a circular or other shape of the display panel is designed.

Since the edge of the special-shaped display panel is a special-shaped structure, the pixel units cannot cover the entire display area, so that the pixel unit forms a stepped structure near the edge of the display panel, and the display area appears jagged at the edge of the special-shaped, and there is color Partial defects, so that the display quality of the edge of the display panel is poor. In the prior art, the edge fogging method is used to weaken the jaggedness at the edge of the display panel by designing the algorithm of the driving chip. This method can improve the jaggedness of the irregular edge of the display panel to a certain extent, but the effect is not good, and the color saturation of the display panel near the irregular edge is poor, and the display effect is poor.

SUMMARY OF THE INVENTION

The purpose of the embodiments of the present invention is to provide an organic light-emitting display panel and a display device, so as to weaken the aliasing phenomenon of the irregular-shaped edge of the irregular-shaped display panel and improve the effect of the display panel near the irregular-shaped edge.

The organic light emitting display panel provided by the embodiment of the present invention includes a display area with a profiled edge, the display area includes a first display area and a second display area arranged in sequence along a direction away from the profiled edge, the first display area It includes a plurality of first sub-pixels arranged in an array, the second display area includes a plurality of pixel units arranged in an array, and each pixel unit includes second sub-pixels of at least three colors, wherein:

The second display area is provided with a plurality of pixel circuits, each of the second sub-pixels is electrically connected to the corresponding pixel circuit, and the first sub-pixels and the second sub-pixels of the same color share the same one A pixel circuit; the number of the first sub-pixels of the same color connected to the second sub-pixels of each color in the same pixel unit is the same.

Optionally, in the second display area, the number of the first sub-pixels of the same color connected to the second sub-pixels of each of the pixel units gradually approaching the first display area gradually increases.

Optionally, in the second display area, the second sub-pixel of the pixel unit close to the first display area and the same color of the pixel unit close to the irregular edge in the first display area. The first subpixels are connected.

Optionally, the area of the pixel opening area of the first sub-pixel is smaller than the area of the pixel opening area of the second sub-pixel of the same color.

Optionally, in the first display area, the area of the pixel opening area of the first sub-pixels of the same color that is gradually away from the second display area gradually decreases.

Specifically, in the first display area, the area of the pixel opening area of the first sub-pixels of the same color that is gradually away from the second display area is reduced by the same difference.

Optionally, the ratio of the area of the pixel opening area of each of the second sub-pixels and the connected first sub-pixels in the same pixel unit is equal.

Optionally, the profiled edge includes a curved edge or an oblique line edge.

Optionally, the special-shaped edges are located at four corners of the display area.

In the prior art, due to the size limitation of the first display area, it is difficult to arrange pixel circuits, resulting in a large stepped structure formed in the pixel units of the irregular edge of the organic light emitting display panel, and there is a relatively obvious sawtooth feeling during use.

In the embodiment of the present invention, the first display area is provided with a plurality of first sub-pixels, and shares a pixel electrode with the second sub-pixels of the same color. Therefore, instead of arranging a pixel circuit in the first display area, a first sub-pixel can also be arranged to reduce the stair-like structure formed by the pixel units of the irregular edge of the organic light emitting display panel, and to weaken the jaggedness of the irregular edge. In addition, one pixel circuit drives the first sub-pixel and the second sub-pixel at the same time, and the first sub-pixel and the second sub-pixel divide the corresponding pixel circuit, resulting in a low light-emitting brightness, and the display panel has a jagged edge. can be further weakened, so this solution can improve the display effect of the organic light emitting display panel.

In the second display area, the number of first sub-pixels of the same color connected to the second sub-pixels of each color in the same pixel unit is the same, then in each pixel unit, the sum of the sub-pixels of each color driven by the pixel circuit is equal , which is beneficial to improve the light-emitting control effect of the same pixel unit, and does not need to change the design of the driving cell, and does not need to design a separate driving circuit for this solution, and the process is relatively simple.

Embodiments of the present invention further provide a display device, which includes the organic light-emitting display panel in any of the above technical solutions.

The organic light-emitting display panel of the display device includes a profiled edge, and a first sub-pixel is arranged near the profiled edge. The first sub-pixel and the second sub-pixel far away from the profiled edge share the same pixel circuit, which can reduce the size of the profiled edge. The pixel units form a stepped structure, which weakens the jaggedness of the profiled edge. In addition, the corresponding pixel circuits are shunted by the first sub-pixel and the second sub-pixel, resulting in low light emission brightness, and the jaggedness of the irregular edge of the display panel can be further weakened. Therefore, in this solution, the display effect of the display device is better.

Description of drawings

FIG. 1 is a schematic diagram of a partial structure of an organic light-emitting display panel according to a first embodiment of the present invention;

2 is a partial cross-sectional view of an organic light-emitting display panel according to a second embodiment of the present invention;

Fig. 3 is a partial enlarged view at A shown in Fig. 2;

4 is a schematic diagram of a partial structure of an organic light-emitting display panel according to a third embodiment of the present invention;

5 is a schematic diagram of a partial structure of an organic light-emitting display panel according to a fourth embodiment of the present invention;

6 is a schematic diagram of a partial structure of an organic light-emitting display panel according to a fifth embodiment of the present invention;

FIG. 7 is a schematic structural diagram of an organic light-emitting display panel according to a sixth embodiment of the present invention;

8 is a schematic structural diagram of an organic light-emitting display panel according to a seventh embodiment of the present invention;

9 is a schematic structural diagram of an organic light-emitting display panel according to an eighth embodiment of the present invention;

10 is a schematic structural diagram of an organic light-emitting display panel according to a ninth embodiment of the present invention;

FIG. 11 is a schematic structural diagram of a display device according to a ninth embodiment of the present invention.

Reference number:

1 - profiled edge;

2- The first display area;

21 - the first sub-pixel;

3- The second display area;

31-pixel unit;

311 - the second sub-pixel;

4-pixel circuit;

5-thin film transistor;

6-metal wire;

100 - display device;

200 - organic light-emitting display panel;

7- Notch.

Detailed ways

In order to weaken the aliasing phenomenon of the profiled edge of the profiled display panel and improve the effect of the display panel near the profiled edge, embodiments of the present invention provide an organic light-emitting display panel and a display device. In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail with reference to the following examples.

As shown in FIG. 1 to FIG. 3 , the organic light emitting display panel provided by the embodiment of the present invention includes a display area with a profiled edge 1 , and the display area includes a first display area 2 and a second display area arranged in sequence along a direction away from the profiled edge 1 . 3. The first display area 2 includes a plurality of first sub-pixels 21 arranged in an array, and the second display area 3 includes a plurality of pixel units 31 arranged in an array, and each pixel unit 31 includes a second sub-pixel of at least three colors. The pixel 311, wherein: the first display area 2 is not provided with a pixel circuit, the second display area 3 is provided with a plurality of pixel circuits 4, each second sub-pixel 311 is electrically connected to the corresponding pixel circuit 4, the first sub-pixel 21 shares the same pixel circuit 4 with the second sub-pixels 311 of the same color; the number of the first sub-pixels 21 of the same color connected to the second sub-pixels 311 of each color in the same pixel unit 31 is the same.

In the prior art, it is difficult to arrange the pixel circuit 4 in the first display area near the profiled edge due to the size limitation, resulting in the pixel unit of the organic light emitting display panel forming a larger stepped structure at the profiled edge. Sawtooth.

In the embodiment of the present invention, the first display area 2 is provided with a plurality of first sub-pixels 21 and shares a pixel circuit 4 with the second sub-pixels 311 of the same color. Therefore, instead of disposing the pixel circuit 4 in the first display area 2, the first sub-pixel 21 can also be disposed to reduce the formation of a stepped structure of the pixel units 31 at the irregular-shaped edge 1 of the organic light-emitting display panel, and to weaken the sawtooth of the irregular-shaped edge 1 sense. In addition, one pixel circuit 4 drives the first sub-pixel 21 and the second sub-pixel 311 at the same time, and the first sub-pixel 21 and the second sub-pixel 311 shunt the corresponding pixel circuit 4, resulting in the display panel near the irregular edge. If the light-emitting brightness is low, the jaggedness of the profiled edge 1 of the display panel can be further weakened, so this solution can improve the display effect of the organic light-emitting display panel.

In a specific embodiment, the anodes of the first sub-pixel 21 and the second sub-pixel 311 of the same color can be connected together through metal wires to share the same pixel circuit 4, as shown in FIG. 1; The first sub-pixel 21 and the second sub-pixel 311 are respectively connected to the pixel circuit 4 through metal wires. The specific connection method can be designed according to the actual product requirements.

Please refer to FIG. 2 and FIG. 3 , the second display area 3 includes pixel circuits 4 opposite to the second sub-pixels 311 , while the first display area 2 is not provided with pixel circuits. Each of the second sub-pixels 311 is directly electrically connected to one of the thin film transistors 5 in the pixel circuit 4 , and the anode of the second sub-pixel 311 is connected to the thin film transistor 5 through the metal wire 6 . Specifically, the first sub-pixel 21 can be connected to the anode of the second sub-pixel 311 of the same color.

In the second display area 3, the number of the first sub-pixels 21 of the same color connected to the second sub-pixels 311 of each color in the same pixel unit 31 is the same, then in each pixel unit 31, the pixel circuit 4 drives each The total sum of the sub-pixels of the colors is equal, which is beneficial to improve the light emission control effect of the same pixel unit 31, and the design of the driving cell does not need to be changed, and the pixel circuit 4 does not need to be designed separately for this solution, and the process is relatively simple.

As shown in FIG. 1 , the first sub-pixel 21 and the second sub-pixel 311 sharing one pixel circuit are not limited to be located in the same row, that is, the first sub-pixel 21 and the second sub-pixel 311 in different rows can share the same The pixel circuit can be specifically designed according to the arrangement of the first sub-pixel 21 and the second sub-pixel 311 .

It is worth noting that the drawings in this application only schematically illustrate the partial structure of the organic light-emitting display panel, and do not completely correspond to actual products. For example, the boundary between the first display area 2 and the second display area 3 may be an irregular boundary; or the arrangement of the first sub-pixels 21 in the first display area 2 and the second sub-pixels 311 in the second display area 3 It may also be arranged differently than shown.

Referring to FIG. 4 , in an optional embodiment, in the second display area 3 , the number of the first sub-pixels 21 of the same color that are connected to the second sub-pixels 311 of each pixel unit 31 of the first display area 2 gradually gradually increase.

In this embodiment, since the closer to the profiled edge 1, the more the first subpixels 21 are connected to the second subpixel 311, the more obvious the shunt effect is, and the lower the luminous brightness, that is, the luminous brightness is closer to the profiled edge 1. The direction of the light is gradually reduced, and the sudden change of the luminous brightness is weakened, the display effect is better, and the jaggedness at the edge 1 of the special shape is also weaker.

A specific example is shown in FIG. 4 . For details, please refer to the last row of sub-pixels in the figure. For the pixel units 31 adjacent to the first display area 2 , each second sub-pixel 311 is connected to three first sub-pixels 21 of the same color. , and each second sub-pixel 311 of the pixel unit 31 that is far away from the first display area 2 is connected to a first sub-pixel 21 of the same color.

Please continue to refer to FIG. 4 , in the second display area 3 , the second sub-pixel 311 of the pixel unit 31 close to the first display area 2 is connected to the first sub-pixel 21 of the same color close to the irregular edge 1 in the first display area 2 .

In this embodiment, the first sub-pixel 21 of the first display area 2 and the second sub-pixel 311 near the irregular edge 1 share the same pixel circuit, so that the brightness of the sub-pixels in the display area near the irregular edge 1 is lower , which is conducive to weakening the jaggedness at the edge 1 of the profile. In addition, in this embodiment, the first sub-pixel 21 closer to the odd-shaped edge 1 shares the same pixel circuit with the second sub-pixel 311 closer to the odd-shaped edge 1, and wiring can be simplified when implementing this embodiment.

Please continue to refer to FIG. 4 , the pixel opening area of the first sub-pixel 21 is smaller than the pixel opening area of the second sub-pixel 311 of the same color.

In this embodiment, the area of the pixel opening area of the first sub-pixel 21 is smaller than the area of the pixel opening area of the second sub-pixel 311 of the same color. Then, more first sub-pixels 21 can be arranged in the first display area 2, and the density of the first sub-pixels 21 in the first display area 2 is increased, which further reduces the stepped structure at the irregular edge 1 of the display panel and weakens the sawtooth. sense.

Referring to FIG. 5 , in the first display area 2 , the pixel opening areas of the first sub-pixels 21 of the same color that are gradually away from the second display area 3 gradually decrease in area.

In this embodiment, the closer the opening area of the first sub-pixel 21 to the profiled edge 1 is, the more densely it can be arranged. The smaller the stepped structure at the profiled edge 1 of the display panel, the better the effect of weakening the jaggedness. to improve the display effect of the organic light-emitting display panel.

Please continue to refer to FIG. 5 , in the first display area 2 , the pixel opening areas of the first sub-pixels 21 of the same color that are gradually away from the second display area 3 are uniformly reduced in area.

In this embodiment, the smaller the opening area of the first sub-pixel 21 near the profiled edge 1, the denser the arrangement can be, and the smaller the stepped structure at the profiled edge 1 of the display panel, the better the effect of reducing the jaggedness. In addition, in this embodiment, the area of the pixel opening area of the first sub-pixels 21 of the same color is equally reduced, that is, the area of the pixel opening area of the first sub-pixels 21 of the same color changes uniformly, then in the first display area 2, There is no sudden change in the display effect, which can improve the display effect of the display panel.

For a specific example, as shown in FIG. 5 , the opening area of the first sub-pixel 21 that is closer to the profiled edge 1 is smaller, and the opening area of the first sub-pixel 21 adjacent to the second display area 3 is the same as the opening area of the second sub-pixel 311 . The areas are equal, and toward the direction close to the profiled edge 1 , the opening area of the first sub-pixel 21 is reduced by a quarter of the area of the second sub-pixel 311 each time.

Referring to FIG. 6 , the ratio of the area of the pixel opening area of each second sub-pixel 311 in the same pixel unit 31 to the connected first sub-pixel 21 is equal.

In this embodiment, compared with the second sub-pixel 311 of the non-shared pixel circuit, the area magnification of the sub-pixel driven by the pixel circuit is the same, so the control program does not need to be changed, and the light-emitting brightness of each sub-pixel of the same pixel unit 31 is consistent .

Please refer to FIG. 7 to FIG. 8 , in a specific embodiment, the shape of the special-shaped edge 1 is not limited, and the special-shaped edge 1 may be a curved edge or an oblique line edge. In the organic light emitting display panel shown in FIG. 7 and FIG. 8 , the irregular edge 1 is a curved edge, and in the organic light emitting display panel shown in FIG. 9 , the irregular edge 1 is a slanted edge. Specifically, the specific shape of the above-mentioned curved edge is not limited. For example, in the organic light-emitting display panel shown in FIG. 7, the curved edge can be a circular arc edge, and the curved edge shown in FIG. 7 is a rounded edge; The edge may also be an irregular curved edge. For the organic light emitting display panel shown in FIG. 8 , the curved edge is an irregular curved edge.

The specific position of the special-shaped edge is not specifically limited. It can be located at the four corners of the display area or at other positions in the display area. For example, if there is a gap 7 in the display area, there is also an edge at the gap 7. The edge can be a rectangular edge, or is the special-shaped edge in the present invention, please refer to FIG. 10 .

Please refer to FIG. 7 and FIG. 9 , the special-shaped edge 1 is located at the four corners of the display area.

Specifically, in this embodiment, the special-shaped edges 1 are located at the four corners of the display area. For example, in the organic light emitting display panel in FIG. 7 , the four corners of the display area are all rounded edges.

Referring to FIG. 11 , an embodiment of the present invention further provides a display device 100 , where the display device 100 includes the organic light-emitting display panel 200 in any of the above technical solutions.

The organic light-emitting display panel of the display device includes a profiled edge, and a first sub-pixel is arranged near the profiled edge. The first sub-pixel and the second sub-pixel far away from the profiled edge share the same pixel circuit, which can reduce the size of the profiled edge. The pixel units form a stepped structure, which weakens the jaggedness of the profiled edge. In addition, the corresponding pixel circuits are shunted by the first sub-pixel and the second sub-pixel, resulting in low light emission brightness, and the jaggedness of the irregular edge of the display panel can be further weakened. Therefore, in this solution, the display effect of the display device is better.

Optionally, in this embodiment of the present invention, the specific type of the display device is not limited, and may be a mobile phone, a display, a tablet computer, or a TV. For example, the display device 100 shown in FIG. 11 is a mobile phone.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention. Thus, provided that these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims (9)

1. An organic light-emitting display panel, comprising a display area having a special-shaped edge, wherein the display area comprises a first display area and a second display area sequentially arranged along a direction away from the special-shaped edge, the first display area comprises a plurality of first sub-pixels arranged in an array, the second display area comprises a plurality of pixel units arranged in an array, each pixel unit comprises second sub-pixels of at least three colors, and wherein:

the second display area is provided with a plurality of pixel circuits, each second sub-pixel is electrically connected with the corresponding pixel circuit, and the first sub-pixel and the second sub-pixel with the same color share the same pixel circuit; the number of the first sub-pixels of the same color connected with the second sub-pixels of each color in the same pixel unit is the same;

in the second display area, the number of the first sub-pixels of the same color connected to the second sub-pixels of each pixel unit gradually close to the first display area gradually increases.

2. The organic light emitting display panel according to claim 1, wherein the second sub-pixel of the pixel unit adjacent to the first display region in the second display region is connected to the same-color first sub-pixel adjacent to the irregular edge in the first display region.

3. The organic light emitting display panel of claim 1, wherein the pixel opening area of the first sub-pixel is smaller than the pixel opening area of the same-color second sub-pixel.

4. The organic light emitting display panel according to claim 3, wherein in the first display region, the area of the pixel opening area of the first sub-pixel of the same color gradually distant from the second display region gradually decreases.

5. The organic light emitting display panel according to claim 4, wherein in the first display region, pixel opening area equi-differences of the first sub-pixels of the same color gradually distant from the second display region decrease.

6. The organic light emitting display panel according to claim 1, wherein a ratio of a pixel opening area of each of the second sub-pixels to the connected first sub-pixel in the same pixel unit is equal.

7. The organic light emitting display panel according to any one of claims 1 to 6, wherein the shaped edge comprises a curved edge or a diagonal edge.

8. The organic light emitting display panel of claim 7, wherein the shaped edges are located at four corners of the display area.

9. A display device comprising the organic light-emitting display panel according to any one of claims 1 to 8.

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