CN107819023A - 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, in particular to an organic light emitting display panel and a display device.

Background technique

OLED display panels are thin, light, wide viewing angle, active light emission, continuously adjustable light color, low cost, fast response, low energy consumption, low driving voltage, wide operating temperature range, simple production process, high luminous efficiency and With many advantages such as flexible display, it has been listed as a very promising next-generation display technology.

With the development of OLED technology, display devices are gradually becoming narrower or even borderless. From the perspective of aesthetics and product quality, the shape of display panels 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 provided on the display panel to install devices such as earpieces and cameras, or a circular or other shaped display panel is designed.

Since the edge of the special-shaped display panel is a special-shaped structure, the pixel unit 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 has a jagged feeling at the edge of the special-shaped display, and there is a discoloration. Offset defects, resulting in poor display picture quality at the edge of the display panel. In the prior art, the edge fogging method is used to weaken the jagged phenomenon at the edge of the display panel by designing the algorithm of the driving chip. This method can improve the jagged feeling of the irregular-shaped 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-shaped edge is poor, and the display effect is poor.

Contents 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 jagged phenomenon of the special-shaped edge of the special-shaped display panel and improve the effect of the display panel near the special-shaped edge.

The organic light-emitting display panel provided by the embodiment of the present invention includes a display area with a special-shaped edge, and the display area includes a first display area and a second display area arranged in sequence along a direction away from the special-shaped edge, and the first display area Including a plurality of first sub-pixels arranged in an array, the second display area includes a plurality of pixel units arranged in an array, 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-pixel and the second sub-pixel of the same color share the same Pixel circuit: 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.

Optionally, in the second display area, the number of the first sub-pixels of the same color connected to the second sub-pixels 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 is the same color as the second sub-pixel of the pixel unit close to the edge of the irregular shape in the first display area The first sub-pixels 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 pixel opening areas of the first sub-pixels of the same color that are gradually farther away from the second display area gradually decrease.

Specifically, in the first display area, the areas of the pixel opening areas of the first sub-pixels of the same color gradually away from the second display area decrease in equal difference.

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

Optionally, the shaped edge includes a curved edge or an oblique edge.

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

In the prior art, due to the limited size of the first display area, it is difficult to arrange pixel circuits, which leads to the formation of a large stepped structure of the pixel units on the odd-shaped edge of the organic light-emitting display panel, which has a relatively obvious jagged feeling when used.

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 disposing pixel circuits in the first display area, the first sub-pixels may also be disposed, so as to reduce the step-like structure formed by the pixel units of the odd-shaped edge of the organic light-emitting display panel, and weaken the jagged feeling of the odd-shaped edge. In addition, one pixel circuit drives the first sub-pixel and the second sub-pixel at the same time, and the above-mentioned first sub-pixel and the second sub-pixel divide the corresponding pixel circuit, resulting in low luminous brightness, and the jagged edge of the display panel 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 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, then in each pixel unit, the sum of the sub-pixels of each color driven by the pixel circuit is equal , it is beneficial to improve the light emission control effect of the same pixel unit, and there is no need to change the design of the drive cell, and it is not necessary to design a drive circuit separately for this solution, and the process is relatively simple.

An embodiment of the present invention also provides a display device, which includes the organic light emitting display panel in any one of the above technical solutions.

The organic light-emitting display panel of the display device includes a special-shaped edge, and a first sub-pixel is arranged near the special-shaped edge, and the first sub-pixel and the second sub-pixel far from the above-mentioned special-shaped edge share the same pixel circuit, which can reduce the The pixel units form a ladder-like structure, which weakens the jagged edge of the irregular shape. In addition, the first sub-pixel and the second sub-pixel shunt the corresponding pixel circuits, resulting in lower luminance, and the jagged 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

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 of place 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;

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 signs:

1 - profiled edge;

2- the first display area;

21 - the first sub-pixel;

3- 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 jagged 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 embodiments of the present invention provide an organic light-emitting display panel and a display device. In order to make the purpose, technical solution and advantages of the present invention clearer, the following examples are given to further describe the present invention in detail.

As shown in Figures 1 to 3, the organic light-emitting display panel provided by the embodiment of the present invention includes a display area with a special-shaped 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 special-shaped 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 second sub-pixels of at least three colors. A 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, and each second sub-pixel 311 is electrically connected to the corresponding pixel circuit 4, and the first sub-pixel 21 and the second sub-pixel 311 of the same color share the same pixel circuit 4; the second sub-pixels 311 of each color in the same pixel unit 31 are connected with the same number of first sub-pixels 21 of the same color.

In the prior art, it is difficult to arrange pixel circuits 4 in the first display area close to the edge of the irregular shape due to the size limitation, which leads to the formation of a larger stepped structure in the pixel units of the organic light emitting display panel at the edge of the irregular shape. Jagged.

In the embodiment of the present invention, the first display area 2 is provided with a plurality of first sub-pixels 21 and shares one pixel circuit 4 with the second sub-pixels 311 of the same color. Therefore, the pixel circuit 4 is not provided in the first display area 2, and the first sub-pixel 21 can also be provided to reduce the step-like structure of the pixel unit 31 at the irregular-shaped edge 1 of the organic light-emitting display panel and weaken the jaggedness 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 edge of the irregular shape. If the luminous brightness is low, the jaggedness of the irregularly-shaped 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 wiring, so as 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 a pixel circuit 4 opposite to the second sub-pixel 311 , while the first display area 2 does not have a pixel circuit. Each second sub-pixel 311 is directly electrically connected to a thin film transistor 5 in the pixel circuit 4 , and an anode of the second sub-pixel 311 is connected to the thin film transistor 5 through a metal line 6 . Specifically, the first sub-pixel 21 may 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 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 there is no need to change the design of the driving cell, and there is no need to separately design the pixel circuit 4 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 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 the actual product. 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 of the first display area 2 and the second sub-pixels 311 of the second display area 3 It may also be arranged differently than shown in the figure.

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

In this embodiment, since the closer to the special-shaped edge 1, the more the number of first sub-pixels 21 connected to the second sub-pixel 311, the more obvious the shunt effect and the lower the luminous brightness, that is, the luminous brightness is closer to the special-shaped edge 1. The direction of the direction gradually decreases, and the sudden change of the luminous brightness is weakened, the display effect is better, and the jagged feeling at the edge 1 of the special shape is also weaker.

The specific embodiment is shown in Fig. 4, please refer to the last row of sub-pixels in the figure for details, the pixel unit 31 adjacent to the first display area 2, each second sub-pixel 311 is connected with three first sub-pixels 21 of the same color , and for the pixel unit 31 farther away from the first display area 2 , each second sub-pixel 311 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 shaped 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 close to the irregular edge 1 share the same pixel circuit, so that the brightness of the sub-pixels in the area near the irregular edge 1 of the display area is relatively low , which is beneficial to weaken the jagged feeling at the edge 1 of the special shape. In addition, in this embodiment, the first sub-pixel 21 closer to the shaped edge 1 and the second sub-pixel 311 closer to the shaped edge 1 share the same pixel circuit. When implementing this embodiment, wiring can be simplified.

Please continue to refer to FIG. 4 , 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.

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 step structure at the irregular edge of the display panel and weakens the jagged edges. sense.

Please refer to FIG. 5 , in the first display area 2 , the area of the pixel opening area of the first sub-pixels 21 of the same color that is gradually farther away from the second display area 3 gradually decreases.

In this embodiment, the closer to the irregular-shaped edge 1, the smaller the opening area of the first sub-pixel 21 can be arranged, the smaller the stepped structure at the irregular-shaped edge 1 of the display panel, the better the effect of weakening the jagged feeling, and further 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 areas of the pixel apertures of the first sub-pixels 21 of the same color that gradually move away from the second display area 3 decrease in equal difference.

In this embodiment, the opening area of the first sub-pixel 21 closer to the irregular-shaped edge 1 is smaller, and can be arranged more densely. The smaller the step structure at the irregular-shaped edge 1 of the display panel, the better the effect of weakening the jagged feeling. In addition, in this embodiment, the equal difference of the area of the pixel opening area of the first sub-pixel 21 of the same color is reduced, that is, the area of the pixel opening area of the first sub-pixel 21 of the same color changes uniformly, then in the first display area 2, There will be no sudden change in the display effect, and the display effect of the display panel can be improved.

The specific embodiment is shown in FIG. 5 , the opening area of the first sub-pixel 21 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 towards the direction close to the irregular-shaped 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.

Please refer 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 that does not share the pixel circuit, the area of the sub-pixel driven by the pixel circuit has the same magnification factor, so the control program does not need to be changed, and the luminance of each sub-pixel of the same pixel unit 31 is consistent. .

Please refer to FIG. 7 to FIG. 8 , in specific embodiments, 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 an oblique edge. Specifically, the specific shape of the above-mentioned curved edge is not limited. For example, in the organic light-emitting display panel as shown in FIG. 7, the curved edge can be a circular arc edge, and the curved edge shown in FIG. The edge can 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. It 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 edge 1 is located at 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.

Please refer to FIG. 11 , an embodiment of the present invention further provides a display device 100 , which 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 special-shaped edge, and a first sub-pixel is arranged near the special-shaped edge, and the first sub-pixel and the second sub-pixel far from the above-mentioned special-shaped edge share the same pixel circuit, which can reduce the The pixel units form a ladder-like structure, which weakens the jagged edge of the irregular shape. In addition, the first sub-pixel and the second sub-pixel shunt the corresponding pixel circuits, resulting in lower luminance, and the jagged 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 monitor, a tablet computer, or a TV. For example, the display device 100 shown in FIG. 11 is a mobile phone.

Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these modifications and variations.

Claims (10)

1. An organic light-emitting display panel, characterized in that it includes a display area with a special-shaped edge, and the display area includes a first display area and a second display area arranged in sequence along a direction away from the special-shaped edge, the first display area The display area includes a plurality of first sub-pixels arranged in an array, and 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-pixel and the second sub-pixel of the same color share the same Pixel circuit: 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. 2. The organic light-emitting display panel according to claim 1, wherein in the second display area, all the pixels connected to the second sub-pixels of the pixel units gradually approaching the first display area The number of the first sub-pixels of the same color gradually increases. 3. The organic light-emitting display panel according to claim 1, wherein in the second display area, the second sub-pixel of the pixel unit close to the first display area is the same as the first The first sub-pixels of the same color near the edge of the irregular shape in the display area are connected. 4 . The organic light emitting display panel according to claim 1 , wherein an area of a pixel opening area of the first sub-pixel is smaller than an area of a pixel opening area of a second sub-pixel of the same color. 5. The organic light-emitting display panel according to claim 4, wherein in the first display area, the area of the pixel opening area of the first sub-pixel of the same color that is gradually farther away from the second display area is gradually decrease. 6. The organic light-emitting display panel according to claim 5, wherein in the first display area, the area of the pixel opening area of the first sub-pixels of the same color gradually away from the second display area, etc. The difference decreases. 7 . The organic light emitting display panel according to claim 1 , wherein ratios of areas of pixel openings of the second sub-pixels in the same pixel unit to the connected first sub-pixels are equal. 8 . 8. The organic light emitting display panel according to any one of claims 1 to 7, wherein the irregularly shaped edge comprises a curved edge or an oblique edge. 9 . The organic light emitting display panel according to claim 8 , wherein the special-shaped edges are located at four corners of the display area. 10. A display device, comprising the organic light emitting display panel according to any one of claims 1-9.