Display panel and electronic device

Abstract

The display panel and the electronic equipment provided by the present disclosure belong to the technical field of electronics. The display panel comprises a first region, a second region, a third region and a driving circuit. The first region, the second region and the third region are sequentially surrounded from inside to outside. Each of the first region, the second region and the third region has a plurality of pixel units. The area of the pixel units in the third region, the area of the pixel units in the second region and the area of the pixel units in the first region are sequentially reduced. The driving circuit is electrically connected with the pixel units. The present disclosure can avoid obvious color difference and brightness difference of the display panel.

Description

Technical Field

[0001] This disclosure belongs to the field of electronic technology, and in particular relates to a display panel and an electronic device. Background Technology

[0002] For electronic devices with a display panel and a front-facing camera, the display panel and the front-facing camera are usually located on the same side. As a result, the area of ​​the display panel needs to be reduced to accommodate the front-facing camera.

[0003] In related technologies, an under-display camera solution has been provided to increase the area of ​​the display panel. In this solution, the front-facing camera is positioned below the display panel, so that it no longer occupies space on the panel. Furthermore, the pixel area in the region of the display panel corresponding to the front-facing camera is reduced, allowing the front-facing camera to capture images through the display panel.

[0004] However, because the pixel units in the area corresponding to the front-facing camera on the display panel are smaller than the pixel units in other areas, a noticeable color difference and brightness difference will occur between the two areas. Summary of the Invention

[0005] In order to solve the above-mentioned technical problems, the purpose of this disclosure is to provide a display panel and electronic device that can avoid obvious color difference and brightness difference in the display panel.

[0006] To achieve the above objectives, the technical solution adopted in this disclosure is as follows:

[0007] According to one aspect of this disclosure, a display panel is provided, including a first region, a second region, a third region, and a driving circuit;

[0008] The first region, the second region, and the third region surround each other from the inside out;

[0009] Each of the first region, the second region, and the third region has multiple pixel units, and the area of ​​the pixel units in the third region, the area of ​​the pixel units in the second region, and the area of ​​the pixel units in the first region decrease in that order.

[0010] The driving circuit is electrically connected to the pixel unit.

[0011] In one implementation of this disclosure, the second region includes n sub-regions, where n is a positive integer;

[0012] The sub-region is ring-shaped, and n sub-regions are arranged sequentially around the first region, with each of the n sub-regions containing the pixel unit.

[0013] In another implementation of this disclosure, the area of ​​the pixel units in the n sub-regions decreases sequentially in the direction from the third region to the first region.

[0014] In another implementation of this disclosure, the pixel units located within the same sub-region have the same area.

[0015] In another implementation of this disclosure, the area difference between the pixel units in any two adjacent sub-regions is the same.

[0016] In another implementation of this disclosure, the difference in area between the pixel units in two adjacent sub-regions satisfies the following relationship:

[0017]

[0018] Wherein, Δd is the difference in area between the pixel units in two adjacent sub-regions, a is the area of ​​the pixel unit in the third region, b is the area of ​​the pixel unit in the first region, and n is the number of sub-regions.

[0019] In another implementation of this disclosure, the pixel density is the same in the first region, the second region, and the third region.

[0020] In yet another implementation of this disclosure, the driving circuit comprises a first circuit, a second circuit, and a third circuit;

[0021] The first circuit is electrically connected to the pixel unit in the first region, the second circuit is electrically connected to the pixel unit in the second region, and the third circuit is electrically connected to the pixel unit in the third region.

[0022] In yet another implementation of this disclosure, the second circuit includes m sub-circuits, where m = n;

[0023] Each of the m sub-circuits corresponds one-to-one with each of the n sub-regions, and each sub-circuit is electrically connected to the pixel unit within its corresponding sub-region.

[0024] According to one aspect of this disclosure, an electronic device is provided, including a housing, a display panel, and a camera;

[0025] The display panel is the same as the one described above. The display panel is located on one side of the housing and is connected to the housing.

[0026] The camera is located between the display panel and the housing, and is opposite to the first area.

[0027] The beneficial effects of the technical solutions provided in this disclosure are at least:

[0028] When using the display panel provided in this embodiment, the third region is the main display area of ​​the display panel. The first region is opposite to the camera. Since the pixel units in the first region have the smallest area, the camera can take pictures through the first region when it is working. Furthermore, since there is a second region between the first and third regions, the pixel units in the second region have an area larger than the pixel units in the first region but smaller than the pixel units in the third region. Therefore, the second region can act as a transition, so that there is no obvious color difference or brightness difference between the first and third regions, thus improving the display quality of the display panel.

[0029] In other words, the display panel provided in this embodiment can not only cooperate with the camera to complete normal shooting work, but also avoid obvious color and brightness differences due to sudden changes in the area of ​​pixel units, thereby improving the display quality of the display panel. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the structure of the display panel provided in an embodiment of this disclosure;

[0032] Figure 2 This is a schematic diagram of the structure of the second region provided in an embodiment of this disclosure;

[0033] Figure 3 This is a schematic diagram of the structure of the electronic device provided in the embodiments of this disclosure.

[0034] The symbols in the diagram represent the following meanings:

[0035] 10. First area;

[0036] 20. Second region; 201. Sub-region;

[0037] 30. Third Region;

[0038] 40. Drive circuit; 401. First circuit; 402. Second circuit; 4021. Sub-circuit; 403. Third circuit;

[0039] 50. Pixel unit;

[0040] 100. Shell;

[0041] 200. Display panel;

[0042] 300. Camera. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of this disclosure clearer, the embodiments of this disclosure will be described in further detail below with reference to the accompanying drawings.

[0044] For electronic devices with a display panel and a front-facing camera, the display panel and the front-facing camera are usually located on the same side. As a result, the area of ​​the display panel needs to be reduced to accommodate the front-facing camera.

[0045] In related technologies, two under-display camera solutions are provided to increase the area of ​​the display panel. Both solutions place the front-facing camera below the display panel, so that the front-facing camera no longer occupies display panel area. The difference lies in the pixel density (Pixels Per Inch, PPI) of the area of ​​the display panel corresponding to the front-facing camera, thereby increasing the transmittance of this area and allowing the front-facing camera to take pictures through the display panel. However, this solution results in a decrease in resolution in the area with reduced pixel density, which cannot guarantee the visual uniformity of the display panel. The second solution reduces the area of ​​the pixel unit (the orthogonal projection area of ​​the pixel unit on the substrate) of the area of ​​the display panel corresponding to the front-facing camera, thereby allowing the front-facing camera to take pictures through the display panel. However, although this solution ensures the visual uniformity of the display panel, it leads to different aging rates between areas with larger pixel units and areas with smaller pixel units. As the display panel is used for a long time, more obvious color and brightness differences will form between the two areas.

[0046] To address the aforementioned technical problems, this disclosure provides a display panel that can be applied to various electronic devices, such as mobile phones and tablet computers. Figure 1 This is a schematic diagram of the display panel structure, combined with... Figure 1 In this embodiment, the display panel includes a first region 10, a second region 20, a third region 30, and a driving circuit 40.

[0047] The first region 10, the second region 20, and the third region 30 surround each other from the inside out. Each of the first region 10, the second region 20, and the third region 30 has multiple pixel units 50, and the area of ​​the pixel units 50 in the third region 30, the second region 20, and the first region 10 decreases sequentially. The driving circuit 40 is electrically connected to the pixel units 50.

[0048] When using the display panel provided in this embodiment, the third region 30 is the main display area of ​​the display panel. The first region 10 is opposite to the camera 300. Since the pixel unit 50 in the first region 10 has the smallest area, the camera 300 can take pictures through the first region 10 when it is working. Furthermore, since there is a second region 20 between the first region 10 and the third region 30, the pixel unit 50 in the second region 20 has a larger area than the pixel unit 50 in the first region 10 but a smaller area than the pixel unit 50 in the third region 30. Therefore, the second region 20 can act as a transition, so that there is no obvious color difference or brightness difference between the first region 10 and the third region 30, thus improving the display quality of the display panel.

[0049] In other words, the display panel provided in this embodiment can not only cooperate with the camera 300 to complete normal shooting work, but also avoid obvious color and brightness differences due to sudden changes in the area of ​​the pixel unit 50, thereby improving the display quality of the display panel.

[0050] It is easy to understand that if the display panel is the front panel of the electronic device, then the camera 300 is the front camera 300; if the display panel is the rear panel of the electronic device, then the camera 300 is the rear camera 300. This disclosure does not limit the position of the display panel in the electronic device or the position of the corresponding camera 300.

[0051] As mentioned earlier, the transition effect of the second region 20 ensures that there are no significant color or brightness differences between the first region 10 and the third region 30, thus improving the display quality of the display panel. The second region 20 will be described in detail below.

[0052] Figure 2 This is a structural schematic diagram of the second region 20. To facilitate enlarging the structure of the second region 20, Figure 2 Only a portion of the third unit is shown. (Combined) Figure 2 In this embodiment, the second region 20 includes n sub-regions 201, where n is a positive integer. The sub-regions 201 are annular, and the n sub-regions 201 are arranged sequentially around the first region 10. Each of the n sub-regions 201 has a pixel unit 50.

[0053] The arrangement of n sub-regions 201 around the first region 10 means that the first sub-region 201 surrounds the first region 10 and is adjacent to it; the second sub-region 201, adjacent to the first sub-region 201, surrounds the first sub-region 201 and is adjacent to it; the third sub-region 201, adjacent to the second sub-region 201, surrounds the second sub-region 201 and is adjacent to it; and so on, until the nth sub-region 201 surrounds the (n-1)th sub-region 201 and is adjacent to both the (n-1)th sub-region 201 and the third region 30.

[0054] Subregion 201 being annular means that it is a closed shape that encloses the first region 10. Since the second region 20 is sandwiched between the first region 10 and the third region 30, its shape can depend on the shapes of the first and third regions 10. For example, if the outer edge of the first region 10 is an arc and the inner edge of the third region 30 is an arc, then the inner and outer edges of the second region 20 are also arcs. In this case, the second region 20 is annular, and the n subregions 201 are also annular, and concentric among them. If the outer edge of the first region 10 is a polygon and the inner edge of the third region 30 is a polygon, then the inner and outer edges of the second region 20 are also polygons, and the n subregions 201 are annular with polygonal edges. Of course, the shapes of the first region 10, the second region 20, and the third region 30 can all be selected according to the requirements. It is only necessary to ensure that the second region 20 is located between the first region 10 and the third region 30 so that the second region 20 can serve as a transition between the first region 10 and the third region 30. This disclosure does not impose any restrictions on this.

[0055] The second region 20 is divided into n parts by using n sub-regions 201. In this way, by adjusting the area of ​​the pixel units 50 of each sub-region 201, a transition effect can be created between the sub-regions 201, thereby further improving the transition effect of the second region 20. This will be explained below.

[0056] In order to create a transition effect between the sub-regions 201, in this embodiment, the area of ​​the pixel unit 50 in the n sub-regions 201 decreases sequentially in the direction from the third region 30 to the first region 10.

[0057] In other words, among the n sub-regions 201, the pixel unit 50 in the first sub-region 201 closest to the first region 10 has the smallest area. The pixel unit 50 in the second sub-region 201 surrounding the first sub-region 201 has a smaller area than the pixel unit 50 in the first sub-region 201, and so on, until the pixel unit 50 in the nth sub-region 201 closest to the third region 30 has the largest area. This design allows the area of ​​the pixel units 50 in the third region 30 to gradually change, resulting in a smoother transition effect in the third region 30.

[0058] It should be noted that although the area of ​​pixel unit 50 within the first sub-region 201 is the smallest, it is still larger than the area of ​​pixel unit 50 within the first region 10. Similarly, although the area of ​​pixel unit 50 within the nth sub-region 201 is the largest, it is still smaller than the area of ​​pixel unit 50 within the third region 30. In this way, the second region 20 can be guaranteed to serve as a transition between the first region 10 and the third region 30.

[0059] Optionally, the pixel units 50 located within the same sub-region 201 have the same area. This design facilitates the control of the pixel units 50 within each sub-region 201, improving the reliability of the display panel.

[0060] Optionally, the area difference of pixel units 50 in any two adjacent sub-regions 201 is the same.

[0061] For example, if the area of ​​the pixel unit 50 in the first sub-region 201 closest to the first region 10 is d, then the area of ​​the pixel unit 50 in the second sub-region 201 surrounding the first sub-region 201 is d + Δd, and the area of ​​the pixel unit 50 in the third sub-region 201 surrounding the second sub-region 201 is d + 2Δd. And so on, until the area of ​​the pixel unit 50 in the nth sub-region 201 closest to the third region 30 is d + (n-1)Δd. In this way, the areas of the pixel units 50 in the n sub-regions 201 gradually change by equal amounts, resulting in a smoother transition in the second region 20 and further reducing the significant color and brightness differences between the pixel units 50 in the first region 10 and the pixel units 50 in the second region 20.

[0062] The difference in area between pixel units 50 within two adjacent sub-regions 201 satisfies the following relationship:

[0063]

[0064] Where Δd is the difference in area between two adjacent sub-regions 201, a is the area of ​​pixel unit 50 in the third region 30, b is the area of ​​pixel unit 50 in the first region 10, and n is the number of sub-regions 201.

[0065] In this way, the n sub-regions 201 can evenly distribute the area difference between the pixel units 50 in the first region 10 and the pixel units 50 in the second region 20, further ensuring the transition effect of the second region 20.

[0066] For example, if the area of ​​pixel unit 50 in the third region 30 is 100%, the area of ​​pixel unit 50 in the first region 10 is 40%, and the second region 20 has 3 sub-regions 201, then according to the relation (1), Δd is 20%.

[0067] To ensure that the resolution is the same across the first region 10, the second region 20, and the third region 30, the pixel density within each of these regions is the same. Pixel density refers to the number of pixels per inch.

[0068] It is easy to understand that the pixel density is the same in the n sub-regions 201.

[0069] For pixel units with the same area, if the input current density is consistent, then the brightness of the pixel units can be kept consistent. As mentioned above, in this embodiment, since the areas of the pixel units 50 in the first region 10, the second region 20, and the third region 30 are different, it is necessary to adjust the current density of the pixel units 50 in each region accordingly to ensure that the brightness of the pixel units 50 in each region is consistent. The current density is determined by the impedance of the driving circuit 40 and the voltage input to the driving circuit 40. Therefore, by adjusting the impedance and voltage of the driving circuit 40, the brightness of each pixel unit 50 can be kept consistent.

[0070] Therefore, in this embodiment, the pixel units 50 in the first region 10, the second region 20 and the third region 30 are driven respectively.

[0071] In this embodiment, the driving circuit 40 includes a first circuit 401, a second circuit 402, and a third circuit 403.

[0072] The first circuit 401 is electrically connected to the pixel unit 50 in the first region 10, the second circuit 402 is electrically connected to the pixel unit 50 in the second region 20, and the third circuit 403 is electrically connected to the pixel unit 50 in the third region 30.

[0073] In the above implementation, the pixel unit 50 in the first region 10 is driven by the first circuit 401, the pixel unit 50 in the second region 20 is driven by the second circuit 402, and the pixel unit 50 in the third region 30 is driven by the third circuit 403. This allows for the design of the pixel units 50 in the first region 10, the second region 20, and the third region 30 respectively, so that the first circuit 401, the second circuit 402, and the third circuit 403 have different impedances and voltages, and thus different current densities. This ensures that the color and brightness of each pixel unit 50 in the first region 10, the second region 20, and the third region 30 are uniform, thus guaranteeing the display effect.

[0074] Since the impedance is determined by the hardware of the drive circuit 40, while the voltage can be adjusted by software, the voltage can be adjusted by fine-tuning the IV curve of the drive circuit 40 when the impedance is constant.

[0075] Since the area of ​​the pixel unit 50 in each sub-region 201 is also different, for the same reason, the pixel unit 50 in each sub-region 201 is driven separately.

[0076] In this embodiment, the second circuit 402 includes m sub-circuits 4021, where m = n.

[0077] Each of the m sub-circuits 4021 corresponds to one of the n sub-regions 201, and each sub-circuit 4021 is electrically connected to the pixel unit 50 in the corresponding sub-region 201.

[0078] In the above implementation, the pixel unit 50 in the first sub-region 201 is driven by the first sub-circuit 4021, the pixel unit 50 in the second sub-region 201 is driven by the second sub-circuit 4021, and the pixel unit 50 in the third sub-region 201 is driven by the third sub-circuit 4021. And so on, the pixel unit 50 in the nth sub-region 201 is driven by the mth sub-circuit 4021. In this way, the pixel unit 50 in each sub-region 201 can be designed separately, ensuring uniform color and brightness of each pixel unit 50 and guaranteeing the display effect.

[0079] This disclosure provides an electronic device, which can be a mobile phone, tablet computer, etc. Figure 3 See the schematic diagram of the electronic device. Figure 3 In this embodiment, the electronic device includes a housing 100, a display panel 200, and a camera 300.

[0080] Display panel 200 is Figure 1-2The display panel 200 is located on one side of the housing 100 and is connected to the housing 100. The camera 300 is located between the display panel 200 and the housing 100 and is opposite to the first area 10.

[0081] When using the electronic device provided in this embodiment, since the camera 300 is located between the display panel 200 and the housing 100, it does not occupy the area of ​​the display panel 200, which is beneficial for realizing a full-screen design of the electronic device. Because the first region 10 is opposite to the camera 300, and the pixel unit 50 within the first region 10 has the smallest area, the camera 300 can take pictures through the first region 10 when it is working. Furthermore, since there is a second region 20 between the first region 10 and the third region 30, and the area of ​​the pixel unit 50 within the second region 20 is larger than the area of ​​the pixel unit 50 within the first region 10 but smaller than the area of ​​the pixel unit 50 within the third region 30, the second region 20 can act as a transition, preventing significant color and brightness differences between the first region 10 and the third region 30, thus improving the display quality of the electronic device.

[0082] In other words, because electronic devices are equipped with Figure 1-2 The display panel shown is used to complete normal shooting work in conjunction with the camera 300, and to avoid obvious color and brightness differences caused by sudden changes in the area of ​​the pixel unit 50, thereby improving the display quality of the display panel 200.

[0083] It is readily understood that if the electronic device needs to mount the display panel 200 on the front, then the display panel 200 is the front panel of the electronic device, and the camera 300 is the corresponding front-facing camera 300. If the electronic device needs to mount the display panel 200 on the rear, then the display panel 200 is the rear panel of the electronic device, and the camera 300 is the corresponding rear-facing camera 300. This disclosure does not limit the position of the display panel 200 in the electronic device, nor the position of the corresponding camera 300.

[0084] The following section describes the interaction between the display panel 200 and the camera 300.

[0085] When the camera 300 is not in operation, the first region 10, the second region 20, and the third region 30 display images normally. Driven by the first circuit 401, the second circuit 402, and the third circuit 403 respectively, the color and brightness of the pixel units 50 within the first region 10, the second region 20, and the third region 30 remain uniform. Furthermore, since the pixel density within the first region 10, the second region 20, and the third region 30 is the same, their resolutions also remain uniform. In this configuration, the camera 300 can be hidden beneath the display panel 200, which is beneficial for achieving a full-screen design for electronic devices.

[0086] When the camera 300 needs to operate, the second region 20 and the third region 30 display images normally, while the transmittance of the first region 10 decreases under the drive of the first circuit 401, allowing the camera 300 to capture images through the first region 10. After the camera 300 finishes capturing images, the transmittance of the first region 10 returns to normal.

[0087] The above are merely optional embodiments of this disclosure and are not intended to limit this disclosure. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the protection scope of this disclosure.

Claims

1. A display panel, characterized by, The display panel is applied to an electronic device with a camera, and comprises a first area (10), a second area (20), a third area (30) and a driving circuit (40); The first area (10), the second area (20) and the third area (30) are sequentially surrounded from inside to outside, the pixel density in the first area (10), the second area (20) and the third area (30) is the same, the first area (10) is opposite to the camera, and the third area (30) is a main display area of the display panel; Each of the pixel units (50) in the first area (10) has the same area, each of the pixel units (50) in the third area (30) has the same area, and the area of the pixel unit (50) in the third area (30), the area of the pixel unit (50) in the second area (20) and the area of the pixel unit (50) in the first area (10) sequentially decrease; The second area (20) comprises n sub-areas (201), n is a positive integer, the sub-area (201) is annular, and n sub-areas (201) are sequentially arranged around the first area (10), each of the pixel units (50) in the same sub-area (201) has the same area, and the difference between the areas of the pixel units (50) in any two adjacent sub-areas (201) is the same; The driving circuit (40) is electrically connected with the pixel unit (50).

2. The display panel of claim 1, wherein, In the direction from the third area (30) to the first area (10), the areas of the pixel units (50) in the n sub-areas (201) sequentially decrease.

3. The display panel of claim 1, wherein, The difference between the areas of the pixel units (50) in any two adjacent sub-areas (201) satisfies the following relationship: Wherein, Δd is the difference between the areas of the pixel units (50) in any two adjacent sub-areas (201), a is the area of the pixel unit (50) in the third area (30), b is the area of the pixel unit (50) in the first area (10), and n is the number of the sub-areas (201).

4. The display panel of claim 1, wherein, The driving circuit (40) comprises a first circuit (401), a second circuit (402) and a third circuit (403); The first circuit (401) is electrically connected with the pixel unit (50) in the first area (10), the second circuit (402) is electrically connected with the pixel unit (50) in the second area (20), and the third circuit (403) is electrically connected with the pixel unit (50) in the third area (30).

5. The display panel of claim 4, wherein, The second circuit (402) comprises m sub-circuits (4021), and m=n. m sub-circuits (4021) correspond to n sub-areas (201) one by one, and the sub-circuits (4021) are electrically connected with the pixel units (50) in the corresponding sub-areas (201) respectively.

6. An electronic device, comprising: The display panel (200) is the display panel in any one of claims 1-5, the display panel (200) is located on one side of the shell (100) and is connected with the shell (100). The camera (300) is located between the display panel (200) and the shell (100) and opposite the first area (10). ​

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