A display panel and electronic device

Abstract

This disclosure provides a display panel and an electronic device. The display panel includes multiple display areas, each including a pixel area and a transparent area, separated by a pixel defining layer. The pixel defining layer includes a first defining area and a second defining area. The first defining area is disposed between multiple sub-pixels to define the multiple sub-pixels, and the second defining area is the pixel defining layer for all areas except the first defining area. The second defining area is made of a transparent material containing scattering particles, and the light transmittance of the transparent material is greater than 90%. The first defining area is made of a light-absorbing material. This disclosure interferes with the original interference light rays in the transparent area, preventing the formation of peak and trough interference, fundamentally alleviating the diffraction ghosting problem. Furthermore, the pixel area still uses a light-absorbing material, greatly reducing light leakage between pixels, improving product performance, and thus enhancing display quality.

Description

Technical Field

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

[0002] OLED (Organic Light Emitting Diode), as a novel light-emitting device, has demonstrated enormous application potential in the display and lighting fields, thus attracting strong attention from academia and industry. In the display field, OLED has advantages over LCD (Liquid Crystal Display) such as self-illumination, fast response, wide viewing angle, high brightness, vibrant colors, and thinness, and is considered the next-generation display technology.

[0003] Currently, the multifunctional applications of OLED transparent displays are becoming increasingly popular. In existing transparent display panels, OLED pixels include transparent and opaque areas (usually including driving TFTs, pixel light-emitting areas, and PDLs, etc.). The transparent and opaque areas are arranged in a regular manner, which will produce a regular grating structure. When observed by the human eye, a diffraction effect will occur, affecting the transparency effect, resulting in lower product performance and a poor user experience. Summary of the Invention

[0004] In view of this, the present disclosure provides a display panel and an electronic device to solve the following problems of the prior art: In existing transparent display panels, the transparent and opaque areas are arranged in a regular manner, which will produce a regular grating structure. When observed by the human eye, a diffraction effect will occur, affecting the transparency effect, resulting in low product performance and poor user experience.

[0005] On one hand, embodiments of this disclosure propose a display panel, including: multiple display areas, each display area including a pixel area and a transparent area, the pixel area and the transparent area being separated by a pixel defining layer; the pixel defining layer including a first defining area and a second defining area, the first defining area being disposed between multiple sub-pixels for defining the multiple sub-pixels, the second defining area being the pixel defining layer for areas other than the first defining area; the second defining area being made of a transparent material containing scattering particles, the transparent material having a light transmittance greater than 90%; the first defining area being made of a light-absorbing material.

[0006] In some embodiments, the pixel demarcation layer between the pixel region and the transparent region includes a first material portion and a second material portion, wherein the first material portion is disposed in the first demarcation region and the second material portion is disposed in the second demarcation region.

[0007] In some embodiments, a pixel delimiting layer between the pixel region and the transparent region is disposed in the first delimiting region, or a pixel delimiting layer between the pixel region and the transparent region is disposed in the second delimiting region.

[0008] In some embodiments, the pixel region includes a plurality of sub-pixels, the transparent region includes a plurality of sub-regions, and the length of a sub-pixel in a first direction is the same as the length of a sub-region in the first direction.

[0009] In some embodiments, the transparent material is an organic resin material.

[0010] In some embodiments, the scattering particles include at least one of the following: titanium dioxide and silicon dioxide.

[0011] In some embodiments, the diameter of the scattering particles ranges from 25 to 40 nm.

[0012] In some embodiments, the light-absorbing material includes: an opaque material with a light transmittance of less than 10%, or an opaque material containing light-absorbing particles with a light transmittance of greater than 10%.

[0013] In some embodiments, the display area is disposed on a planarization layer, and a pixel driving circuit for the display area is disposed under the planarization layer.

[0014] On the other hand, embodiments of this disclosure provide an electronic device, including: a display panel as described in any embodiment of this disclosure.

[0015] This embodiment improves upon the original pixel delimiting layer, which uses light-absorbing materials throughout. The materials used in the pixel delimiting layer, excluding the pixel areas, are made of transparent materials containing scattering particles. These transparent materials are distributed around the transparent areas. When incident light is received, the light is scattered by the scattering particles into multiple or irregular beams, interfering with the original interference light in the transparent areas. This prevents the formation of peak and trough interference, fundamentally alleviating the diffraction ghosting problem. Furthermore, the pixel areas still use light-absorbing materials, greatly reducing light leakage between pixels, improving product performance, and ultimately enhancing display quality. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this disclosure or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1Schematic diagram of the structure of the display panel provided in the first embodiment of this disclosure Figure 1 ;

[0018] Figure 2 A cross-sectional structural diagram of the display panel provided in the first embodiment of this disclosure;

[0019] Figure 3 This is a schematic diagram of the structure of an existing transparent display panel;

[0020] Figure 4 for Figure 3 A cross-sectional structural diagram of the transparent display panel;

[0021] Figure 5 Optical path interferogram of the existing transparent region and PDL region;

[0022] Figure 6 Optical path interference diagram of the transparent region and PDL region provided in the first embodiment of this disclosure;

[0023] Figure 7 Schematic diagram of the structure of the display panel provided in the first embodiment of this disclosure Figure 2 ;

[0024] Figure 8 This is a schematic diagram of the structure of the display panel provided in the second embodiment of this disclosure;

[0025] Figure 9 This is a cross-sectional structural diagram of a display panel provided in the second embodiment of this disclosure.

[0026] Figure label:

[0027] First defining region 11, second defining region 12, sub-pixel 21, sub-region 31, first material portion 41, second material portion 51. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0029] Unless otherwise defined, the technical or scientific terms used in this disclosure shall have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms “first,” “second,” and similar terms used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as “comprising” or “including” mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as “connected” or “linked” are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as “upper,” “lower,” “left,” and “right” are used only to indicate relative positional relationships, and these relative positional relationships may change accordingly when the absolute position of the described objects changes.

[0030] To keep the following description of the embodiments of this disclosure clear and concise, detailed descriptions of known functions and known components are omitted.

[0031] To reduce diffraction effects, large-size transparent products are currently mostly developed with low resolution, and the principle of shared transparency is adopted to increase the area of ​​the transparent region and reduce diffraction, but diffraction effects still exist.

[0032] Meanwhile, the flatness under the anode of the vapor-deposited product is currently limited, which leads to certain optical and electrical crosstalk at different angles. At present, black PDL (pixel delimiter layer) is often used to solve this problem. However, black PDL will reduce the relative transmittance of transparent products and affect the overall display effect.

[0033] In order to minimize the diffraction effect of transparent OLED display panels, this disclosure provides a novel display panel that, while increasing transmittance, minimizes light leakage between pixels, improves product performance, and thus enhances display quality.

[0034] Example 1

[0035] The first embodiment of this disclosure provides a display panel, the structure of which is shown in the figure below. Figure 1 As shown, the cross-sectional structure is as follows Figure 2 As shown, it includes:

[0036] Multiple display areas are provided, each including a pixel area and a transparent area (composed of one or more sub-regions 31). The pixel area and the transparent area are separated by a pixel delimiting layer. The pixel delimiting layer includes a first delimiting area 11 and a second delimiting area 12. The first delimiting area 11 is disposed between multiple sub-pixels and is used to delimit multiple sub-pixels 21. The second delimiting area 12 is the pixel delimiting layer for areas other than the first delimiting area. The second delimiting area is made of a transparent material containing scattering particles, and the light transmittance of the transparent material is greater than 90%. The first delimiting area is made of a light-absorbing material.

[0037] Figure 1 The pixel demarcation layer between the pixel area and the transparent area shown is set in the first demarcation area, that is, the pixel demarcation layer around each sub-pixel is made of light-absorbing material. The other pixel demarcation layers outside the first demarcation area are the second demarcation areas. The second demarcation area starts from the boundary between the transparent area and the pixel area in the current display area and extends in the direction of the pixel area in another adjacent display area.

[0038] exist Figure 1 In the diagram, the pixel region includes four sub-pixels 21, and the transparent region includes two sub-regions 31. In a specific implementation, the pixel region may include multiple sub-pixels 21, and the transparent region may also include multiple sub-regions. The length of a sub-pixel in a first direction is the same as the length of a sub-region in the first direction. Figure 1 The direction of the long side of the sub-pixel is the direction of the long side of the width side. Depending on different design requirements, the first direction can be different, which will not be elaborated here. Figure 1 The second defining region 12 on the right side can be part of the current display area, or it can be a pixel defining layer around a transparent area in another adjacent display area; this is not limited here. Correspondingly, Figure 2 Will Figure 1 The second defining region 12 on the right is defined as a cross-sectional structure diagram of the pixel defining layer around the transparent area in another adjacent display area. Therefore, in Figure 2 There is no second demarcation area 12 on the right side.

[0039] As shown in the figure Figure 3 This is a schematic diagram of the structure of an existing transparent display panel. Figure 4 for Figure 3 A cross-sectional structural diagram shows that the transparent area and the non-transparent PDL area 1 form a regular grating structure, which will cause a diffraction effect at a specific distance and angle of view. The most obvious optical effect is that the object appears as a ghost when viewed through the transparent area.

[0040] Figure 1The display panel of this disclosure embodiment includes a pixel defining layer comprising at least two types of materials (corresponding to the first defining region and the second defining region). The pixel defining layer between sub-pixels of the pixel region uses a light-absorbing material to reduce optical and electrical light leakage. That is, when a sub-pixel experiences optical or electrical light leakage to the pixel, all light from other directions at the pixel opening is absorbed by the light-absorbing material. A pixel defining layer containing scattering particles is provided between the pixel region and the transparent region. When ambient light is incident on the transparent region, the scattering particles contained at the edge will interfere with the path of the light, affecting the path of the transparent region and reducing diffraction ghosting. Figure 5 for Figure 3 The optical path interference diagrams of the existing transparent region and PDL region show obvious interference peaks and troughs. Figure 6 The diagram shows the optical path interference of the transparent region and the PDL region in an embodiment of this disclosure. Since the PDL around the transparent region is a transparent material, the incident light will pass through the PDL. At this time, the incident light is scattered into multiple beams or becomes irregular light, which will then interfere with the interference light in the transparent region, preventing it from forming peak-valley interference and fundamentally alleviating diffraction ghosting.

[0041] The transparent material is preferably an organic resin material, such as acrylic, resin, PR glue, etc.; the scattering particles can be, for example, titanium dioxide (TiO2), silicon dioxide (SiO2), etc., and the diameter of the scattering particles is preferably in the range of 25-40nm to achieve the best display effect.

[0042] The light-absorbing material can be the same as existing light-absorbing materials. For example, it can be an opaque material with a light transmittance of less than 10%, i.e., black PDL material, or it can be an opaque material with a light transmittance of more than 10% containing light-absorbing particles, such as yellow material mixed with light-absorbing particles. The aforementioned light-absorbing particles can be carbon black, color masterbatch (e.g., carbon, chromium), or light-absorbing dyes similar to filter elements. The light-absorbing material will not be elaborated here; please refer to the material usage of PDL in the prior art.

[0043] certainly, Figure 1 As just one possible example, the pixel demarcation layer between the aforementioned pixel region and transparent region can also be set in a second demarcation region, i.e., as shown below. Figure 7 As shown, all of them fall within the protection scope of the embodiments of this disclosure, and do not constitute a limitation on the embodiments of this disclosure.

[0044] This embodiment improves upon the original pixel delimiting layer, which uses light-absorbing materials throughout. The materials used in the pixel delimiting layer, excluding the pixel areas, are made of transparent materials containing scattering particles. These transparent materials are distributed around the transparent areas. When incident light is received, the light is scattered by the scattering particles into multiple or irregular beams, interfering with the original interference light in the transparent areas. This prevents the formation of peak and trough interference, fundamentally alleviating the diffraction ghosting problem. Furthermore, the pixel areas still use light-absorbing materials, greatly reducing light leakage between pixels, improving product performance, and ultimately enhancing display quality.

[0045] Example 2

[0046] The second embodiment of this disclosure provides a display panel, the structure of which is shown in the figure below. Figure 8 As shown, the cross-section is schematically as follows. Figure 9 As shown, it includes:

[0047] Multiple display areas are provided, each including a pixel area and a transparent area, which are separated by a pixel delimiting layer. The pixel delimiting layer includes a first delimiting area 11 and a second delimiting area 12. The first delimiting area 11 is disposed between multiple sub-pixels to delimit the multiple sub-pixels, and the second delimiting area 12 is the pixel delimiting layer for areas other than the first delimiting area. The second delimiting area is made of a transparent material containing scattering particles, and the light transmittance of the transparent material is greater than 90%. The first delimiting area is made of a light-absorbing material. The pixel delimiting layer between the pixel area and the transparent area includes a first material portion 41 and a second material portion 51. The first material portion 41 is disposed in the first delimiting area 11, and the second material portion 51 is disposed in the second delimiting area 12.

[0048] The first material portion is close to the pixel area, and the second material portion is close to the transparent area, thus forming a state in which the first defining region completely surrounds each sub-pixel, and the second defining region completely surrounds each sub-region in the transparent area.

[0049] Figure 8 The pixel demarcation layer between the pixel area and the transparent area shown includes two materials: one part is set in the first demarcation area and the other part is set in the second demarcation area. As a result, the part of the pixel demarcation layer near the pixel area will not leak light, while the other part of the pixel demarcation layer near the transparent area can scatter light. The pixel demarcation layer between the pixel area and the transparent area has better display performance than a single material.

[0050] The aforementioned pixel region includes four sub-pixels 21, and the transparent region includes two sub-regions 31. In a specific implementation, the pixel region may include multiple sub-pixels 21, and the transparent region may also include multiple sub-regions. The length of a sub-pixel in a first direction is the same as the length of a sub-region in the first direction. Figure 8 The direction of the long side of the sub-pixel is the direction of the long side of the width side. Depending on different design requirements, the first direction can be different, which will not be elaborated here. Figure 8 The second defined area 12 on the right side is part of the current display area.

[0051] The transparent material is preferably an organic resin material, such as acrylic, resin, PR glue, etc.; the scattering particles can be, for example, titanium dioxide (TiO2), silicon dioxide (SiO2), etc., and the diameter of the scattering particles is preferably in the range of 25-40nm to achieve the best display effect.

[0052] The light-absorbing material can be the same as existing light-absorbing materials. For example, it can be an opaque material with a light transmittance of less than 10%, i.e., black PDL material, or it can be an opaque material with a light transmittance of more than 10% containing light-absorbing particles, such as yellow material mixed with light-absorbing particles. The aforementioned light-absorbing particles can be carbon black, color masterbatch (e.g., carbon, chromium), or light-absorbing dyes similar to filter elements. The light-absorbing material will not be elaborated here; please refer to the material usage of PDL in the prior art.

[0053] This embodiment improves upon the original pixel delimiting layer, which uses light-absorbing materials throughout. The materials used in the pixel delimiting layer, excluding the pixel areas, are made of transparent materials containing scattering particles. These transparent materials are distributed around the transparent areas. When incident light is received, the light is scattered by the scattering particles into multiple or irregular beams, interfering with the original interference light in the transparent areas. This prevents the formation of peak and trough interference, fundamentally alleviating the diffraction ghosting problem. Furthermore, the pixel areas still use light-absorbing materials, greatly reducing light leakage between pixels, improving product performance, and ultimately enhancing display quality.

[0054] The aforementioned display area is set on a planarization layer, and the pixel driving circuit and other structures for the display area are set below the planarization layer, which will not be described in detail here.

[0055] This disclosure also provides an electronic device that may include the display panel described in the above embodiments. The display panel will not be described in detail here, but can be referred to the two embodiments described above.

[0056] Furthermore, although exemplary embodiments have been described herein, their scope includes any and all embodiments based on this disclosure that have equivalent elements, modifications, omissions, combinations (e.g., schemes involving intersections of various embodiments), adaptations, or alterations. Elements in the claims will be interpreted broadly based on the language used in the claims and are not limited to the examples described in this specification or during the implementation of this application, and such examples will be interpreted as non-exclusive. Therefore, this specification and examples are intended to be considered illustrative only, and the true scope and spirit are indicated by the following claims and the full scope of their equivalents.

[0057] The above description is intended to be illustrative and not restrictive. For example, the above examples (or one or more of them) can be used in combination with each other. Other embodiments can be used by those skilled in the art when reading the above description. Furthermore, in the above detailed description, various features may be grouped together to simplify the disclosure. This should not be construed as an intention that a feature of the disclosure that is not claimed is necessary for any claim. Rather, the subject matter of this disclosure may be less than all the features of a particular disclosed embodiment. Thus, the following claims are incorporated herein by reference as examples or embodiments, wherein each claim is an independent, separate embodiment, and these embodiments are contemplated to be combined with each other in various combinations or arrangements. The scope of this disclosure should be determined by reference to the appended claims and the full scope of their equivalents.

[0058] The foregoing has provided a detailed description of several embodiments of this disclosure. However, this disclosure is not limited to these specific embodiments. Those skilled in the art can make various variations and modifications based on the concept of this disclosure, and all such variations and modifications should fall within the scope of protection claimed by this disclosure.

Claims

1. A display panel, characterized in that, include: Multiple display areas, each display area including a pixel area and a transparent area, the pixel area and the transparent area being separated by a pixel delimiting layer; The pixel delimiting layer includes a first delimiting region and a second delimiting region. The first delimiting region is disposed between multiple sub-pixels and is used to delimit the multiple sub-pixels. The second delimiting region is the pixel delimiting layer of the regions other than the first delimiting region. The second defined region is made of a transparent material containing scattering particles, and the light transmittance of the transparent material is greater than 90%; the first defined region is made of a light-absorbing material.

2. The display panel as described in claim 1, characterized in that, The pixel demarcation layer between the pixel region and the transparent region includes a first material portion and a second material portion, wherein the first material portion is disposed in the first demarcation region and the second material portion is disposed in the second demarcation region.

3. The display panel as described in claim 1, characterized in that, The pixel demarcation layer between the pixel region and the transparent region is disposed in the second demarcation region.

4. The display panel as described in claim 1, characterized in that, The pixel region includes multiple sub-pixels, and the transparent region includes multiple sub-regions. The length of a sub-pixel in a first direction is the same as the length of a sub-region in the first direction.

5. The display panel as described in claim 1, characterized in that, The transparent material is an organic resin material.

6. The display panel as described in claim 5, characterized in that, The scattering particles include at least one of the following: titanium dioxide and silicon dioxide.

7. The display panel as described in claim 5, characterized in that, The diameter of the scattering particles ranges from 25 to 40 nm.

8. The display panel as described in claim 1, characterized in that, The light-absorbing material includes: an opaque material with a light transmittance of less than 10%, or an opaque material containing light-absorbing particles with a light transmittance of more than 10%.

9. The display panel as described in any one of claims 1 to 8, characterized in that, The display area is disposed on a planarization layer, and the pixel driving circuit of the display area is disposed below the planarization layer.

10. An electronic device, characterized in that, include: The display panel according to any one of claims 1 to 9.

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