Electroluminescent display panel, display device and image display method thereof

Abstract

The present invention discloses an electroluminescent display panel, a display device and a method for acquiring and displaying images thereof. An image acquisition area is set in a display area. Each sub-pixel in the image acquisition area is divided into an opaque display area and a transparent area so that a camera placed below the image acquisition area can acquire images through the transparent area, thereby realizing a camera function in the display area, which is conducive to realizing a full-screen display design. The control circuit of each sub-pixel in the image acquisition area is only set in the opaque display area, and the organic light-emitting structure electrically connected to the control circuit is at least set in the opaque display area. While ensuring that the transparent area is light-transmissive, the display function can be realized in at least the opaque display area to ensure the continuity of the display. When the acquired image is displayed, it can be displayed in a manner of reducing the resolution to improve the clarity of the picture.

Description

Technical Field

[0001] The present invention relates to the field of display technology, and in particular to an electroluminescent display panel, a display device and a method for acquiring image display thereof. Background Art

[0002] At present, the market has higher and higher requirements for the screen-to-body ratio of display products, hoping for a design with a screen-to-body ratio of >90% or even 100%. However, existing display products, such as Figure 1 The mobile phone shown requires a non-display area 02 to set up the front camera module 03, so it is not conducive to a large-screen or full-screen design.

[0003] And as Figure 2 As shown, a corresponding isolated hole area 04 is set in the display area 01 of the display product to realize the placement of the front camera module 03 in the display area 01. Although the front camera module 03 can be placed in the display area 01 to avoid the non-display area design, an isolated hole area 04 that cannot display will be formed in the display area 01, which affects the continuity of the display and is not conducive to the display effect.

[0004] Therefore, how to achieve full-screen display design without affecting the display is a technical problem that urgently needs to be solved in this field. Summary of the invention

[0005] In view of this, an embodiment of the present invention provides an electroluminescent display panel, a display device and a method for acquiring and displaying images thereof, so as to solve the problem that the existing camera module is disposed in the display area and affects the display continuity.

[0006] Therefore, an electroluminescent display panel provided by an embodiment of the present invention includes a base substrate, a plurality of pixel units arranged in an array in a display area on the base substrate, each of the pixel units includes at least two sub-pixels, and the display area has an image acquisition area including the plurality of sub-pixels;

[0007] Each of the sub-pixels within the image acquisition area has an opaque display area and a display area, and each of the sub-pixels includes an organic light-emitting structure and a control circuit connected to the organic light-emitting structure; the control circuit is only arranged in the opaque display area, and the organic light-emitting structure is at least arranged in the opaque display area.

[0008] In a possible implementation, in the above-mentioned electroluminescent display panel provided in an embodiment of the present invention, the organic light-emitting structure includes: an anode, an electroluminescent material and a cathode stacked in sequence on the base substrate; the anode is a reflective electrode in the opaque display area and is electrically connected to the control circuit, and the cathode is a transparent electrode.

[0009] In a possible implementation, in the electroluminescent display panel provided by an embodiment of the present invention, in each of the pixel units, the luminescent colors of the electroluminescent materials of the sub-pixels are different.

[0010] In a possible implementation, in the electroluminescent display panel provided by an embodiment of the present invention, in each of the pixel units, the electroluminescent material of each of the sub-pixels emits white light;

[0011] The organic light emitting structure further comprises: a color resist on a side of the cathode away from the electroluminescent material;

[0012] In each of the pixel units, the colors of the color resistances of the sub-pixels are different.

[0013] In a possible implementation, in the electroluminescent display panel provided by an embodiment of the present invention, in the image acquisition area, the opaque display area and the transparent area of ​​each sub-pixel are arranged along a column direction;

[0014] The arrangement positions of the opaque display areas and the transparent areas in the sub-pixels of odd-numbered rows are consistent, and the arrangement positions of the opaque display areas and the transparent areas in the sub-pixels of even-numbered rows are consistent;

[0015] The opaque display areas or the transparent areas in every two adjacent rows of sub-pixels are arranged continuously.

[0016] In a possible implementation, in the electroluminescent display panel provided by an embodiment of the present invention, in the image acquisition area, the opaque display area and the transparent area of ​​each sub-pixel are arranged along a row direction;

[0017] The arrangement positions of the opaque display areas and the transparent areas in the sub-pixels in odd columns are consistent, and the arrangement positions of the opaque display areas and the transparent areas in the sub-pixels in even columns are consistent;

[0018] The opaque display areas or the transparent areas in every two adjacent columns of the sub-pixels are arranged continuously.

[0019] On the other hand, an embodiment of the present invention further provides a display device, comprising: the electroluminescent display panel provided by the embodiment of the present invention, and a camera disposed in an image acquisition area of ​​the electroluminescent display panel;

[0020] The camera is arranged on a side of the base substrate of the electroluminescent display panel away from the pixel unit.

[0021] On the other hand, an embodiment of the present invention further provides a method for acquiring and displaying an image of the display device, comprising:

[0022] While the sub-pixels in the image acquisition area of ​​the electroluminescent display panel do not display an image, using the camera to acquire an image with a first resolution;

[0023] The image is displayed using a second resolution, wherein the first resolution is a multiple of the second resolution.

[0024] In a possible implementation, in the method for acquiring and displaying an image of the display device provided in an embodiment of the present invention, displaying the image using the second resolution specifically includes:

[0025] At least two adjacent pixels in the image with the first resolution are grouped together, and each sub-pixel in each group of pixels is displayed as an average value of sub-pixels of the same color.

[0026] In a possible implementation, in the method for acquiring and displaying an image of the display device provided in an embodiment of the present invention, displaying the image using the second resolution specifically includes:

[0027] Each pixel in the image with the first resolution whose brightness is greater than a preset brightness threshold is displayed.

[0028] In a possible implementation, in the method for acquiring and displaying an image of the display device provided in an embodiment of the present invention, displaying the image using the second resolution specifically includes:

[0029] Removing pixels whose brightness is less than a preset brightness threshold in the image with the first resolution to obtain a transition image;

[0030] At least two adjacent pixels in the transition image are grouped together, and each sub-pixel in each group of pixels is displayed as an average value of sub-pixels of the same color.

[0031] The beneficial effects of the embodiments of the present invention include:

[0032] An electroluminescent display panel, a display device and a method for acquiring and displaying an image provided by an embodiment of the present invention, wherein an image acquisition area is set in the display area, and each sub-pixel in the image acquisition area is divided into an opaque display area and a transparent area, so that a camera placed below the image acquisition area can acquire an image through the transparent area, thereby realizing a camera function in the display area, which is conducive to realizing a full-screen display design. In addition, the control circuit of each sub-pixel in the image acquisition area is only set in the opaque display area, and the organic light-emitting structure electrically connected to the control circuit is at least set in the opaque display area, so that the display function can be realized in the transparent area and the opaque display area at the same time while ensuring that the transparent area is light-transmissive, without affecting the normal display of the display panel, so as to ensure the continuity of the display. In addition, when displaying the image acquired by the camera placed below the image acquisition area, the resolution can be reduced to improve the clarity of the picture. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 and Figure 2 They are respectively structural schematic diagrams of display products in the prior art;

[0034] Figure 3 A schematic diagram of the structure of an electroluminescent display panel provided by an embodiment of the present invention;

[0035] Figure 4a and Figure 4b They are Figure 3 A schematic cross-sectional view along aa in the middle;

[0036] Figure 5 for Figure 3 Another schematic cross-sectional view along aa;

[0037] Figure 6a and Figure 6b They are schematic diagrams of the structures of the image acquisition area in the electroluminescent display panel provided in the embodiments of the present invention;

[0038] Figure 7 A schematic diagram of the structure of a display device provided by an embodiment of the present invention;

[0039] Figure 8 Comparison chart of images obtained by the camera;

[0040] Fig. 9 A flowchart of a method for acquiring and displaying an image on a display device provided by an embodiment of the present invention;

[0041] Fig.10 A schematic diagram of image simulation after the image acquisition and display method of the display device provided by the embodiment of the present invention is adopted;

[0042] Fig.11 A schematic diagram of a method for reducing resolution in a method for acquiring and displaying an image on a display device provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0043] The specific implementation manner of the electroluminescent display panel, the display device and the method for obtaining image display thereof provided by the embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0044] The shapes and sizes of the film layers in the drawings do not reflect the actual proportions of the electroluminescent display panel, and are only intended to illustrate the content of the present invention.

[0045] Specifically, an electroluminescent display panel provided by an embodiment of the present invention is as follows: Figure 3 and Figure 4a As shown, it includes a base substrate 100, a plurality of pixel units 200 arranged in an array in a display area A on the base substrate 100, each pixel unit 200 includes at least two sub-pixels 210, and the display area A has an image acquisition area B including a plurality of sub-pixels 210;

[0046] Each sub-pixel 210 within the image acquisition area B has an opaque display area C and a transparent area D, and each sub-pixel 210 includes an organic light-emitting structure 211 and a control circuit 212 connected to the organic light-emitting structure 211; the control circuit 212 is only arranged in the opaque display area C, and the organic light-emitting structure 211 is at least arranged in the opaque display area C.

[0047] Specifically, in the electroluminescent display panel provided by the embodiment of the present invention, by dividing each sub-pixel 210 in the image acquisition area B into an opaque display area C and a transparent area D, the camera placed below the image acquisition area B can acquire images through the transparent area D, thereby realizing the camera function in the display area A, which is conducive to the realization of a full-screen display design. In addition, the control circuit 212 of each sub-pixel 210 in the image acquisition area B is only arranged in the opaque display area C, and the organic light-emitting structure 211 electrically connected to the control circuit 212 is simultaneously arranged in the transparent area D and the opaque display area C, so that the display function can be realized in the transparent area D and the opaque display area C at the same time while ensuring that the transparent area D is light-transmissive, without affecting the normal display of the display panel, so as to ensure the continuity of the display.

[0048] In a specific implementation, in the above-mentioned electroluminescent display panel provided in an embodiment of the present invention, the image acquisition area B of the display area A can set the area size according to the number of cameras to be set, so as to determine the number of sub-pixels 210 included in the image acquisition area B; and the number of the image acquisition areas B to be set is not limited, and can be one, two or more, which is not limited here.

[0049] In a specific implementation, in the electroluminescent display panel provided by the embodiment of the present invention, the transparent area D generally occupies 30%-70% of the total area of ​​the sub-pixel 210 , and the specific value needs to be set according to actual needs.

[0050] In a specific implementation, in the above-mentioned electroluminescent display panel provided in an embodiment of the present invention, if Figure 4a As shown, the organic light-emitting structure 211 specifically includes: an anode 2111, an electroluminescent material 2112 and a cathode 2113 which are sequentially stacked on the base substrate 100; the anode 2111 is a reflective electrode in the opaque display area C and is electrically connected to the control circuit 212, and the cathode 2113 is a transparent electrode.

[0051] In a specific implementation, in the above-mentioned electroluminescent display panel provided in an embodiment of the present invention, the organic light-emitting structure 211 can be set only in the opaque display area C, that is, the transparent area D is not provided with the organic light-emitting structure 211. In this way, the transparent area D does not emit light during display. This structure requires separate composition of the anode 2111, the electroluminescent material 2112 and the cathode 2113 during production.

[0052] Alternatively, in the above-mentioned electroluminescent display panel provided by the embodiment of the present invention, if Figure 4a and Figure 5 As shown, an organic light-emitting structure 211 can also be provided in both the opaque display area C and the light-transmitting area D. Thus, when displaying, the opaque display area C and the transparent area D emit light simultaneously. This structure does not require separate patterning of the electroluminescent material 2112 and the cathode 2113 during manufacture.

[0053] Alternatively, in the above-mentioned electroluminescent display panel provided by the embodiment of the present invention, if Figure 4b As shown, the organic light-emitting structure 211 can be set in the opaque display area C and the light-transmitting area D at the same time. At the same time, the anode 2111 and the electroluminescent material 2112 of the opaque display area C and the light-transmitting area D are disconnected by using the pixel defining layer F, that is, it is ensured that the transparent area D does not emit light during display. This structure does not require separate composition of the anode 2111, the electroluminescent material 2112 and the cathode 2113 during production.

[0054] It is worth noting that in the electroluminescent display panel provided by the embodiment of the present invention, the three organic light-emitting structures 211 mentioned above may exist simultaneously, or only one or two organic light-emitting structures 211 mentioned above may exist, which is not limited here.

[0055] Specifically, the anode 2111 can be configured as a multi-layer structure, for example Figure 4aAs shown, the anode 2111 may include a reflective film layer disposed in the opaque display region C, and a transparent electrode film layer disposed in both the opaque display region C and the transparent region D.

[0056] In addition, in addition to the anode 2111, the electroluminescent material 2112 and the cathode 2113, the organic light-emitting structure 211 may also include other functional film layers, such as a hole transport layer and an electron blocking layer between the anode 2111 and the electroluminescent material 2112, which are not described in detail here.

[0057] In a specific implementation, in the above-mentioned electroluminescent display panel provided in an embodiment of the present invention, in each pixel unit 200, the luminescent colors of the electroluminescent material 2112 of each sub-pixel 210 are different, that is, the electroluminescent material 2112 of each sub-pixel 210 is different and needs to be manufactured separately. For example, the electroluminescent material 2112 of each sub-pixel 210 in the pixel unit 200 can emit red light, green light, blue light, etc.

[0058] Alternatively, in a specific implementation, in the electroluminescent display panel provided by the embodiment of the present invention, in each pixel unit 200, the electroluminescent material 2112 of each sub-pixel 210 emits white light, that is, the electroluminescent material 2112 of each sub-pixel 210 is the same and can be manufactured at the same time; at this time, in order to achieve color distinction of each sub-pixel 210, as Figure 5 As shown, the organic light-emitting structure 211 may further include: a color resist 2114 on the side of the cathode 2113 away from the electroluminescent material 2112; in each pixel unit 200, the color of the color resist 2114 of each sub-pixel 210 is different, for example, it may include red, blue and green color resist 2114.

[0059] In specific implementation, in the above-mentioned electroluminescent display panel provided in the embodiment of the present invention, due to the existence of the opaque display area C in the image acquisition area B, the image acquisition of the camera below will be blocked and interfered. In order to reduce the impact on the image acquisition of the camera below, the positions of the opaque display area C and the transparent display area D can be adjusted to try to combine them into continuous large-area transparent areas and opaque areas to facilitate subsequent image processing.

[0060] Based on this, in a specific implementation, in the above-mentioned electroluminescent display panel provided in an embodiment of the present invention, as Figure 6aAs shown, in the image acquisition area B, when the opaque display area C and the transparent area D of each sub-pixel 210 are arranged along the column direction; the arrangement positions of the opaque display area C and the transparent area D in the sub-pixels 210 in the odd rows can be consistent, and the arrangement positions of the opaque display area C and the transparent area D in the sub-pixels 210 in the even rows can be consistent; in this way, the opaque display areas C or transparent areas D in every two adjacent rows of sub-pixels 210 can be arranged continuously to form a continuous large-area light-transmitting area and a light-opaque area. For example Figure 6a Two light-transmitting areas and three light-impermeable areas are formed in the image, which is beneficial for the post-processing of the image.

[0061] Alternatively, in a specific implementation, in the above-mentioned electroluminescent display panel provided in an embodiment of the present invention, if Figure 6b As shown, in the image acquisition area B, when the opaque display area C and the transparent area D of each sub-pixel 210 are arranged along the row direction, the arrangement positions of the opaque display area C and the transparent area D in the sub-pixels 210 in the odd columns can be consistent, and the arrangement positions of the opaque display area C and the transparent area D in the sub-pixels 210 in the even columns can be consistent; in this way, the opaque display areas C or transparent areas D in every two adjacent columns of sub-pixels 210 can be arranged continuously to form a continuous large-area light-transmitting area and a light-opaque area. For example Figure 6b Two light-transmitting areas and three light-impermeable areas are formed in the image, which is beneficial for the post-processing of the image.

[0062] Based on the same inventive concept, an embodiment of the present invention further provides a display device, which can be any product or component with a display function, such as a mobile phone, a tablet computer, a television, a monitor, a laptop computer, a digital photo frame, a navigator, etc. The implementation of the display device can refer to the above-mentioned embodiment of the electroluminescent display panel, and the repeated parts will not be repeated.

[0063] Specifically, an embodiment of the present invention provides a display device, such as Figure 7 As shown, it includes: the electroluminescent display panel 10 provided in the embodiment of the present invention, and a camera 20 disposed in the image acquisition area B of the electroluminescent display panel 10;

[0064] The camera 20 is disposed on a side of the base substrate 100 of the electroluminescent display panel 10 away from the pixel unit 200 .

[0065] Specifically, in the above-mentioned display device provided in an embodiment of the present invention, the number of cameras 20 can be one or more, which is set according to actual needs. Moreover, one camera 20 or multiple cameras 20 can be set in the same image acquisition area B, which is not limited here.

[0066] Specifically, in the above-mentioned display device provided by the embodiment of the present invention, the camera placed below the image acquisition area B acquires the image through the transparent area D, thereby realizing the camera function in the display area A, which is conducive to realizing a full-screen display design.

[0067] However, due to the occlusion of the opaque display area C in the image acquisition area B, as shown in Figure 8 As shown, the image acquired by the camera 20 through the electroluminescent display panel 10 will be blurred, such as Figure 8 As shown in the middle right picture; Figure 8 The middle left picture is an image taken by the same camera when there is no electroluminescent display panel 10 blocking it.

[0068] Based on this, after the image is acquired by the display device provided by the embodiment of the present invention, it cannot be displayed directly, and needs to be processed to ensure that a clear image can be displayed. Therefore, the embodiment of the present invention also provides a method for acquiring and displaying an image by the display device, such as Fig. 9 As shown, the following steps are included:

[0069] S901, while the sub-pixels in the image acquisition area of ​​the electroluminescent display panel do not display an image, using a camera to acquire an image with a first resolution; that is, when the camera needs to shoot, turn off the image display in the image acquisition area, and restore the image display in the image acquisition area after the shooting is completed; this can reduce the impact of the display on the image acquired by the camera;

[0070] S902: Display the image using the second resolution, where the first resolution is a multiple of the second resolution.

[0071] Specifically, in the above-mentioned image display method provided by the embodiment of the present invention, if Fig.10 As shown in the schematic diagram, the left picture is the original picture taken by the camera, and the middle picture is the image taken by the camera placed below the image acquisition area. When the image acquired by the camera placed below the image acquisition area is displayed, the resolution is reduced to transform the high-resolution blurred image into a low-resolution clear image, such as Fig.10 The image shown in the middle right image has a lowered resolution, which can improve image clarity.

[0072] In a specific implementation, in the method for acquiring and displaying an image of the display device provided in the embodiment of the present invention, there are multiple ways to reduce the resolution of the image with the first resolution.

[0073] Specifically, in the method for acquiring and displaying an image on the display device provided by the embodiment of the present invention, a first specific implementation manner of displaying the image using the second resolution in S902 may specifically include:

[0074] At least two adjacent pixels in the image with the first resolution are grouped together, and each sub-pixel in each group of pixels is displayed as an average value of sub-pixels of the same color. Fig.11 As shown, 2*2 pixels are grouped into a group. The left picture is the image with the first resolution; the right picture is the image with the second resolution, where the average value of each red sub-pixel is Displayed as the grayscale value of each red sub-pixel, and the average value of each blue sub-pixel Displayed as the grayscale value of each blue sub-pixel, and the average value of each green sub-pixel Displayed as the grayscale value of each green sub-pixel.

[0075] Specifically, in the method for acquiring and displaying an image on the display device provided in the embodiment of the present invention, the second specific implementation manner of displaying the image using the second resolution in S902 may specifically include:

[0076] The pixels with brightness greater than a preset brightness threshold in the image with the first resolution are displayed. In this way, the pixels with lower brightness values ​​in the position blocked by the opaque display area in the image with the first resolution can be removed, and the remaining pixels after removal are used for image display.

[0077] Specifically, in the method for acquiring and displaying an image of the display device provided in the embodiment of the present invention, the third specific implementation manner of using the second resolution to display the image in S902 may specifically include:

[0078] Removing pixels whose brightness is less than a preset brightness threshold in the image with the first resolution to obtain a transition image;

[0079] At least two adjacent pixels in the transition image are grouped together, and each sub-pixel in each group of pixels is displayed as an average value of sub-pixels of the same color.

[0080] In this way, the pixels with lower brightness values ​​at the positions blocked by the opaque display area in the image of the first resolution can be removed first, and then combined with the first method, the remaining pixels after the removal are grouped, and the average value after grouping is used for image display.

[0081] It should be noted that the above three methods of reducing the resolution provided in the embodiments of the present invention are only examples, and there may be other methods, which will not be described in detail here.

[0082] The electroluminescent display panel, display device and image acquisition and display method provided by the embodiment of the present invention set an image acquisition area in the display area, and divide each sub-pixel in the image acquisition area into an opaque display area and a transparent area, so that the camera placed below the image acquisition area can acquire the image through the transparent area, thereby realizing the camera function in the display area, which is conducive to the realization of full-screen display design. In addition, the control circuit of each sub-pixel in the image acquisition area is only set in the opaque display area, and the organic light-emitting structure electrically connected to the control circuit is set in the transparent area and the opaque display area at the same time, which can ensure that the transparent area is light-transmissive, and realize the display function in the transparent area and the opaque display area at the same time, without affecting the normal display of the display panel, so as to ensure the continuity of the display. In addition, when displaying the image acquired by the camera placed below the image acquisition area, it can be displayed in a manner of reducing the resolution to improve the clarity of the picture.

[0083] 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 equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A method for displaying an acquired image of a display device, characterized in that: The display device comprises: an electroluminescent display panel and a camera; The electroluminescent display panel comprises a base substrate and a plurality of pixel units arranged in an array in a display area on the base substrate, each of the pixel units comprises at least two sub-pixels, and the display area has an image acquisition area comprising a plurality of the sub-pixels; Each of the sub-pixels in the image acquisition area has an opaque display area and a transparent area, and each of the sub-pixels includes an organic light-emitting structure and a control circuit connected to the organic light-emitting structure; the control circuit is only arranged in the opaque display area, and the organic light-emitting structure is at least arranged in the opaque display area; In the image acquisition area, the opaque display areas and transparent areas of each sub-pixel are arranged along the column direction; the arrangement positions of the opaque display areas and transparent areas in the sub-pixels in odd rows are consistent, and the arrangement positions of the opaque display areas and transparent areas in the sub-pixels in even rows are consistent; the opaque display areas or transparent areas in every two adjacent rows of sub-pixels are arranged continuously; Alternatively, within the image acquisition area, the opaque display areas and transparent areas of each of the sub-pixels are arranged along the row direction; the opaque display areas and transparent areas in the sub-pixels in odd columns are arranged at the same position, and the opaque display areas and transparent areas in the sub-pixels in even columns are arranged at the same position; and the opaque display areas or transparent areas in every two adjacent columns of the sub-pixels are arranged continuously; The camera is arranged in the image acquisition area of ​​the electroluminescent display panel, and the camera is arranged on a side of the base substrate of the electroluminescent display panel away from the pixel unit; The method for obtaining image display comprises: While the sub-pixels in the image acquisition area of ​​the electroluminescent display panel do not display an image, using the camera to acquire an image with a first resolution; The image is displayed using a second resolution, where the second resolution is lower than the first resolution, and the first resolution is a multiple of the second resolution.

2. The method for displaying an acquired image of a display device according to claim 1, wherein: The displaying the image using the second resolution specifically includes: At least two adjacent pixels in the image with the first resolution are grouped together, and each sub-pixel in each group of pixels is displayed as an average value of sub-pixels of the same color.

3. The method for displaying an acquired image of a display device according to claim 1, wherein: The displaying the image using the second resolution specifically includes: Each pixel in the image with the first resolution whose brightness is greater than a preset brightness threshold is displayed.

4. The method for displaying an acquired image of a display device according to claim 1, wherein: The displaying the image using the second resolution specifically includes: Removing pixels whose brightness is less than a preset brightness threshold in the image with the first resolution to obtain a transition image; At least two adjacent pixels in the transition image are grouped together, and each sub-pixel in each group of pixels is displayed as an average value of sub-pixels of the same color.

Images