Display panel, display screen and electronic equipment

Abstract

The present disclosure relates to a display panel, a display screen and an electronic device, wherein the display panel includes a substrate and a plurality of pixels, wherein the pixels include a driving circuit layer, a first electrode layer, a light-emitting layer and a second electrode layer located on the substrate, wherein the driving circuit layer includes a pixel driving circuit and a driving lead; wherein the display panel is provided with at least one pre-cut area, wherein the pixel driving circuit is located at the periphery of the pre-cut area, wherein the pixel driving circuit is respectively connected to each of the pixels in the pre-cut area through the driving lead, and the pixels around the pre-cut area are electrically connected to the pixel driving circuit. The present disclosure sets the pixel driving circuit of the driving circuit layer in the pre-cut area at the periphery of the pre-cut area, wherein the pixel driving circuit is electrically connected to the pixels around the pre-cut area and does not affect the arrangement and routing of the surrounding pixels, thereby achieving the setting of the pre-cut area at any position and facilitating the removal of the pre-cut area, thereby achieving the purpose of sharing the mask.

Description

Technical Field

[0001] The present disclosure relates to the field of display technology, and in particular to a display panel, a display screen and an electronic device. Background Art

[0002] With the rapid development of mobile terminal technology, mobile terminals such as smart phones are becoming more and more popular and have become indispensable devices in people's lives. In current mobile terminals, such as smart phones, in order to achieve diversified functions, it is usually necessary to set components such as cameras, infrared distance sensors, and light sensors on the front panel. In order to ensure the normal operation of these components, it is necessary to open holes on the front panel and place these components under the holes so that the components placed under the holes can obtain external information through the holes.

[0003] In the prior art, when preparing display panels, there is usually no pixel design at the location where the hole needs to be opened. The pixels need to be designed separately at the location where the hole is opened. There is no pixel driving circuit in the area with the hole, and the driving circuit is not placed on the periphery. The signal lines in the screen are arranged around the hole. The wiring arrangement is different for different hole locations. If the hole location is changed, the wiring arrangement needs to be redesigned, that is, the mask needs to be redesigned, which will lead to a significant increase in the development cycle and R&D costs of the display panel. Summary of the invention

[0004] In view of this, the present disclosure proposes a display panel, a display screen and an electronic device to solve some or all of the above technical problems.

[0005] In order to achieve the above objectives, the technical solution adopted by the present disclosure is:

[0006] According to a first aspect of an embodiment of the present disclosure, there is provided a display panel, comprising a substrate and a plurality of pixels arranged on the substrate, wherein the plurality of pixels are electrically connected to each other, wherein the pixels comprise a driving circuit layer located on the substrate, a first electrode layer located on the driving circuit layer, a light-emitting layer located on the first electrode layer, and a second electrode layer located on the light-emitting layer, wherein the driving circuit layer comprises a pixel driving circuit and driving leads;

[0007] Among them, the display panel is provided with at least one pre-cut area, the pixel driving circuit is located outside the pre-cut area, the pixel driving circuit is connected to each of the pixels in the pre-cut area through the driving leads, and the pixels around the pre-cut area are electrically connected to the pixel driving circuit.

[0008] Optionally, the first electrode layer is an anode layer, and the second electrode layer is a cathode layer; wherein the first electrode layer is made of a non-transparent material, and the second electrode layer is made of a transparent material; or the first electrode layer is made of a transparent material, and the second electrode layer is made of a non-transparent material; or the first electrode layer and the second electrode layer are both made of transparent materials.

[0009] Optionally, when the first electrode layer is made of a non-transparent material and the second electrode layer is made of a transparent material, the first electrode layer is made of at least one of silver, magnesium and magnesium alloys, zinc and zinc alloys, and aluminum alloys, and the second electrode layer is made of at least one of magnesium-silver alloys, indium tin oxide, and indium zinc oxide.

[0010] Optionally, when the first electrode layer is made of a transparent material and the second electrode layer is made of a non-transparent material, the first electrode layer is made of at least one of magnesium-silver alloy, indium tin oxide, and indium zinc oxide, and the second electrode layer is made of at least one of silver, magnesium and magnesium alloys, zinc and zinc alloys, and aluminum alloys.

[0011] Optionally, when the first electrode layer and the second electrode layer are both made of transparent materials, the first electrode layer and the second electrode layer are made of at least one of magnesium-silver alloy, indium tin oxide, and indium zinc oxide.

[0012] Optionally, the driving lead is a conductive glass lead.

[0013] Optionally, the pre-cut area is in the shape of a hole provided on the display panel.

[0014] Optionally, the pre-cut area is located at a corner of the display panel, so that the corner of the display panel forms an R angle.

[0015] According to a second aspect of an embodiment of the present disclosure, a display screen is provided, comprising a display panel as described in any one of the above.

[0016] According to a third aspect of an embodiment of the present disclosure, an electronic device is provided, comprising a device body, a photosensitive device and a display screen as described above; wherein the display screen is assembled on the device body, and the photosensitive device is arranged corresponding to a pre-cut area of ​​the display screen after the display panel is removed.

[0017] The technical solution provided by the embodiments of the present disclosure may include the following beneficial effects: the present disclosure designs a display panel, a display screen and an electronic device, and the display panel improves the structure of the driving circuit layer, and sets the pixel driving circuit of the driving circuit layer in the pre-cut area on the periphery of the pre-cut area. The pixel driving circuit is electrically connected to the pixels around the pre-cut area without affecting the arrangement and routing of the surrounding pixels, so that the pre-cut area can be set at any position and the cutting of the pre-cut area is facilitated, thereby achieving the purpose of sharing the mask.

[0018] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is an enlarged schematic diagram of the interior of a display screen in the prior art;

[0020] Figure 2 is a structural schematic diagram of an electronic device shown in an exemplary embodiment of the present disclosure;

[0021] Figure 3 is a layout diagram of a pre-cut area in a display screen shown in an exemplary embodiment of the present disclosure;

[0022] Figure 4 is a layout diagram of a pre-cut area in a display screen shown in another exemplary embodiment of the present disclosure;

[0023] Figure 5 is a layout diagram of a pre-cut area in a display screen shown in another exemplary embodiment of the present disclosure;

[0024] Figure 6 is an enlarged schematic diagram of the interior of a display screen shown in an exemplary embodiment of the present disclosure;

[0025] Figure 7 is a cross-sectional schematic diagram of a display panel shown in an exemplary embodiment of the present disclosure;

[0026] Figure 8 It is a detailed cross-sectional schematic diagram of a display panel shown in an exemplary embodiment of the present disclosure. DETAILED DESCRIPTION

[0027] The present disclosure will be described in detail below in conjunction with the specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present disclosure, and any structural, methodological, or functional changes made by a person skilled in the art based on these embodiments are all within the scope of protection of the present disclosure.

[0028] The terms used in this disclosure are for the purpose of describing specific embodiments only and are not intended to limit the disclosure. The singular forms of "a", "said" and "the" used in this disclosure and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0029] Some embodiments of the present disclosure are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments may be combined with each other.

[0030] like Figures 2 to 6 As shown, the electronic device 200 of the embodiment of the present disclosure includes a device body 201, a photosensitive device (not shown) and a display screen 100. The display screen 100 includes a display panel 10, a touch circuit and packaging glass. The display screen 100 is assembled on the device body 201, and the photosensitive device is correspondingly arranged in the pre-cut area 101 of the display screen 100 after the display panel 10 is removed. The photosensitive device includes components such as a camera, an infrared distance sensor, and a light sensor.

[0031] The electronic device 200 of the present disclosure may be any device with a display screen, such as a smart phone, a PDA (Personal Digital Assistant), a mobile computer, a tablet computer, a wearable device, and the like.

[0032] like Figure 6 As shown, the display panel 10 of the present disclosure includes a substrate 1 and a plurality of pixels 11 disposed on the substrate 1. The plurality of pixels 11 are arranged in an array, and the plurality of pixels 11 are electrically connected to each other, for example, in series, in parallel, or in a combination of series and parallel. Each pixel 11 includes a sub-pixel 11 of three primary colors, red (R), green (G), and blue (B). The combination of the three primary colors can make the pixel 11 emit light of different colors.

[0033] In the embodiment of the present disclosure, the substrate 1 may be a rigid substrate, such as a glass substrate, a quartz substrate or a plastic substrate, etc. The substrate 1 may also be a flexible transparent substrate, such as a polyimide (PI) film, etc., to improve the transparency of the device.

[0034] like Figures 6 to 8As shown, the pixel 11 includes a driving circuit layer 2 located on a substrate 1, a first electrode layer 3 located on the driving circuit layer 2, a light-emitting layer 4 located on the first electrode layer 3, and a second electrode layer 5 located on the light-emitting layer 4. The display panel 10 is composed of a plurality of pixels 11, and the plurality of pixels 11 are mass-produced to form the display panel 10. In the process of preparing the display panel 10, the driving circuit layer 2, the first electrode layer 3, the light-emitting layer 4, and the second electrode layer 5 are sequentially stacked on the substrate 1 to form the display panel 10.

[0035] The display panel 10 further includes a pixel definition layer 6 disposed on the light-emitting layer 4, the pixel definition layer 6 is provided with a plurality of pixel 11 openings, the light-emitting layer 4 includes a plurality of organic light-emitting blocks 41, and the plurality of organic light-emitting blocks 41 are disposed in the plurality of pixel 11 openings one by one. The organic light-emitting blocks 41 are OLED (Organic Light-Emitting Diode). Correspondingly, the first electrode layer 3 includes a plurality of first electrode blocks 31, and the plurality of first electrode blocks 31 are disposed under the plurality of organic light-emitting blocks 41 one by one.

[0036] Furthermore, the display panel 10 further includes a packaging layer 7 located on the second electrode layer 5. The packaging layer 7 is a hard screen packaging or an organic thin film packaging.

[0037] The driving circuit layer 2 of the present disclosure includes a pixel driving circuit 21 and a driving lead 22. The pixel driving circuit 21 may be a 2T1C circuit, a 3T1C circuit, a 3T2C circuit, a 7T1C circuit, a 7T2C circuit, etc., and the driving lead 22 is a conductive glass lead (i.e., an ITO lead).

[0038] The display panel 10 is provided with at least one pre-cut area 101, and the pixel driving circuit 21 is located outside the pre-cut area 101. The pixel driving circuit 21 is connected to each pixel 11 in the pre-cut area 101 through the driving lead 22, and the pixels 11 around the pre-cut area 101 are electrically connected to the pixel driving circuit 21.

[0039] In the embodiment of the present disclosure, the pixel array arranged in the pre-cut area 101 is the same as the pixel array arranged outside the pre-cut area 101 in the display panel 10, so that the pre-cut area 101 can be displayed normally. That is, when the pre-cut area 101 is not cut off, the pre-cut area 101 is connected with the display screen outside the pre-cut area 101, so as to avoid the pre-cut area 101 affecting the overall display effect of the display panel 10 when it is not cut off. In this embodiment, a pixel driving circuit 21 for driving the pixels 11 in the pre-cut area 101 to light up is arranged at the periphery of the pre-cut area 101. The pixel driving circuit 21 is connected to each pixel 11 in the pre-cut area 101 through a driving lead 22. The pixel driving circuit 21 is also connected to adjacent pixels at the periphery of the pre-cut area 101. There are multiple pixel driving circuits 21, and the multiple pixel driving circuits 21 are distributed at the periphery of the pre-cut area 101, so as to realize electrical connection between the pixel arrays on the display panel 10, and the cutting of the pre-cut area 101 does not affect the surrounding pixel arrangement and routing.

[0040] In one embodiment, if Figures 3 to 5 As shown, the pre-cut area 101 is a hole-shaped area provided on the display panel 10, and the pre-cut area 101 is used to provide a corresponding photosensitive device. The display panel 10 may define multiple holes according to the design requirements of the electronic device 200, such as: a hole in the upper left corner, a hole in the top center, a hole in the upper right corner, double holes or multiple holes, etc.

[0041] like Figure 1 As shown, in the prior art, the display panel 10' usually does not have a pixel design at the position where a hole is required. When designing the evaporation mask, the mask needs to set a through hole corresponding to the position of the hole 101'. A new mask needs to be developed for the different positions of the hole 101' in the display panel, which results in that the mask cannot be shared. The existing method does not share the mask, that is, a corresponding mask (including wiring arrangement) needs to be set for each position of the hole 101'. There is no pixel driving circuit in the area with the hole 101', and the driving circuit is not placed on the periphery. The signal line in the screen bypasses the hole arrangement. The position of the hole 101' is set differently, and the wiring arrangement is also different accordingly. If the position of the hole 101' is changed, it is necessary to redesign the wiring arrangement method, that is, redesign the mask. The design cost of a set of masks is high, usually costing tens of millions, and the development cycle is long, which will lead to a significant increase in the development cycle and R&D cost of the display panel 10'.

[0042] In view of this, refer again to Figures 6 to 8, the present disclosure can be set for the positions with hole requirements as follows: pixels 11 are set at the opening positions, and the pixel driving circuit 21 that drives the pixel 11 to emit light is set at the periphery of the hole. The pixel driving circuit 21 is connected to each pixel 11 in the hole through the driving lead 22, and the pre-cut areas 101 can be laser cut into holes according to actual needs. Since the pixels 11 are still set in the pre-cut areas 101, the pre-cut areas 101 can meet normal display before cutting. Through this design method, when designing the evaporation mask, the mask used can be shared, thereby reducing the development cost of the mask, and can greatly reduce the development cycle and R&D cost of the display panel 10. Each pixel point corresponds to a pixel driving circuit. Before digging the hole, the pixel points in each area of ​​the screen are arranged with the corresponding pixel driving circuit. When digging the hole, only the corresponding position of the pre-cut area 101 is dug out to form a hole, which does not affect the surrounding pixel arrangement and routing, so there is no need to redesign the mask.

[0043] In another embodiment, the pre-cut area 101 is located at the corner of the display panel 10 so that the corner of the display panel 10 forms an R angle. Since existing smart phones are usually designed with an R angle, and when a large panel is cut into a display panel 10, the corners of the display panel 10 are all designed with a right angle, by setting the corner of the display panel 10 as the pre-cut area 101, the display of the pixels 11 around the pre-cut area 101 will not be affected after the right-angle corner is cut.

[0044] In the present disclosure, the first electrode layer 3 is an anode layer, and the second electrode layer 5 is a cathode layer. The first electrode layer 3 is made of a non-transparent material, and the second electrode layer 5 is made of a transparent material; or the first electrode layer 3 is made of a transparent material, and the second electrode layer 5 is made of a non-transparent material; or the first electrode layer 3 and the second electrode layer 5 are both made of transparent materials.

[0045] In one embodiment, when the first electrode layer 3 is made of a non-transparent material and the second electrode layer 5 is made of a transparent material, the display panel 10 satisfies the design of top light emission. The first electrode layer 3 is made of at least one of silver, magnesium and magnesium alloys, zinc and zinc alloys, and aluminum alloys, and the second electrode layer 5 is made of at least one of magnesium-silver alloy, indium tin oxide, and indium zinc oxide.

[0046] In another embodiment, when the first electrode layer 3 is made of a transparent material and the second electrode layer 5 is made of a non-transparent material, the display panel 10 satisfies the design of bottom light emission, and the substrate 1 is also configured to be light-transmissive. The first electrode layer 3 is made of at least one of magnesium-silver alloy, indium tin oxide, and indium zinc oxide, and the second electrode layer 5 is made of at least one of silver, magnesium and magnesium alloys, zinc and zinc alloys, and aluminum alloys.

[0047] In another embodiment, when the first electrode layer 3 and the second electrode layer 5 are both made of transparent materials, the first electrode layer 3 and the second electrode layer 5 are made of at least one of magnesium silver alloy, indium tin oxide, and indium zinc oxide. In this embodiment, the pre-cut area 101 or the entire display panel 10 can meet the requirements of normal display, and can also control light transmission according to usage requirements.

[0048] The display panel designed in the present disclosure improves the structure of the driving circuit layer in the pre-cut area, and sets the pixel driving circuit of the driving circuit layer in the pre-cut area at the periphery of the pre-cut area. The pixel driving circuit is electrically connected to the pixels around the pre-cut area, and does not affect the arrangement and routing of the surrounding pixels, so that the pre-cut area can be set at any position and the pre-cut area can be easily cut, thereby achieving the purpose of sharing the mask, thereby reducing the development cost of the mask, and significantly reducing the development cycle and R&D cost of the display panel. In addition, the pre-cut area can meet normal display requirements when it is not removed, and will not affect the normal display of the peripheral area of ​​the pre-cut area after cutting.

[0049] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the disclosure disclosed herein. The present disclosure is intended to cover any variations, uses or adaptations of the present disclosure, which follow the general principles of the present disclosure and include common knowledge or customary techniques in the art that are not disclosed in the present disclosure. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present disclosure are indicated by the claims of the present disclosure.

[0050] It should be understood that the present disclosure is not limited to the exact structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A display panel, characterized in that: It comprises a substrate and a plurality of pixels arranged on the substrate, wherein the plurality of pixels are electrically connected to each other, wherein the pixels comprise a driving circuit layer located on the substrate, a first electrode layer located on the driving circuit layer, a light-emitting layer located on the first electrode layer, and a second electrode layer located on the light-emitting layer, wherein the driving circuit layer comprises a pixel driving circuit and driving leads; In which, the display panel is provided with at least one pre-cut area that can be cut off, and the pixel driving circuit is located at the periphery of the pre-cut area. When the pre-cut area is not cut off, the pixel driving circuit is respectively connected to each of the pixels in the pre-cut area through the driving leads. When the pre-cut area is cut off, the pixels around the pre-cut area are electrically connected to the pixel driving circuit.

2. The display panel according to claim 1, characterized in that: The first electrode layer is an anode layer, and the second electrode layer is a cathode layer; wherein the first electrode layer is made of a non-transparent material, and the second electrode layer is made of a transparent material; or the first electrode layer is made of a transparent material, and the second electrode layer is made of a non-transparent material; or both the first electrode layer and the second electrode layer are made of transparent materials.

3. The display panel according to claim 2, characterized in that: When the first electrode layer is made of a non-transparent material and the second electrode layer is made of a transparent material, the first electrode layer is made of at least one of silver, magnesium and magnesium alloys, zinc and zinc alloys, and aluminum alloys, and the second electrode layer is made of at least one of magnesium-silver alloys, indium tin oxide, and indium zinc oxide.

4. The display panel according to claim 2, characterized in that: When the first electrode layer is made of a transparent material and the second electrode layer is made of a non-transparent material, the first electrode layer is made of at least one of magnesium-silver alloy, indium tin oxide, and indium zinc oxide, and the second electrode layer is made of at least one of silver, magnesium and magnesium alloys, zinc and zinc alloys, and aluminum alloys.

5. The display panel according to claim 2, characterized in that: When the first electrode layer and the second electrode layer are both made of transparent materials, the first electrode layer and the second electrode layer are made of at least one of magnesium-silver alloy, indium tin oxide, and indium zinc oxide.

6. The display panel according to claim 1, characterized in that: The driving lead is a conductive glass lead.

7. The display panel according to claim 6, characterized in that: The pre-cut area is in the shape of a hole arranged on the display panel.

8. The display panel according to claim 6, characterized in that: The pre-cut area is located at a corner of the display panel, so that the corner of the display panel forms an R angle.

9. A display screen, characterized in that: The invention comprises a display panel as claimed in any one of claims 1 to 8.

10. An electronic device, characterized in that: It comprises a device body, a photosensitive device and a display screen as claimed in claim 9; wherein the display screen is assembled on the device body, and the photosensitive device is arranged correspondingly in a pre-cut area of ​​the display screen after the display panel is removed.

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