CN210200763U - Light-transmitting display panel, display panel and display device - Google Patents
Light-transmitting display panel, display panel and display device Download PDFInfo
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- CN210200763U CN210200763U CN201921228763.6U CN201921228763U CN210200763U CN 210200763 U CN210200763 U CN 210200763U CN 201921228763 U CN201921228763 U CN 201921228763U CN 210200763 U CN210200763 U CN 210200763U
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Abstract
The utility model discloses a printing opacity display panel, display panel and display device, printing opacity display panel include a plurality of pixel groups, and every pixel group includes two above sub-pixels, and every pixel group includes: a first electrode assembly; light emitting structures on the first electrode assembly, the number of the light emitting structures corresponding to the number of sub-pixels in the pixel group, adjacent light emitting structures being spaced apart from each other; and a second electrode on the light emitting structure, wherein the first electrode assembly includes: the light-transmitting conducting layer is in contact connection with each light-emitting structure of the pixel group; and each reflecting piece is arranged corresponding to one light-emitting structure, and the reflecting pieces are positioned on one side of the light-transmitting conducting layer back to the light-emitting structures. According to the light-transmitting display panel provided by the embodiment of the utility model, on one hand, the power supply efficiency is improved while the higher light transmittance of the light-transmitting display panel is ensured; on the other hand, the reflecting piece can be used for forming a micro-cavity structure, and the display effect of the light-transmitting display panel is improved.
Description
Technical Field
The utility model relates to a show the field, concretely relates to printing opacity display panel, display panel and display device.
Background
With the rapid development of electronic devices, the requirements of users on screen occupation ratio are higher and higher, so that the comprehensive screen display of the electronic devices is concerned more and more in the industry.
Conventional electronic devices such as mobile phones, tablet computers, and the like need to integrate light sensing elements such as front-facing cameras, infrared light sensors, and the like. In the prior art, by forming a groove (Notch) or an opening in the display screen, external light can enter the photosensitive element located below the screen through the groove or the opening in the screen. However, none of these electronic devices is a full screen in the true sense, and cannot display in each area of the entire screen, for example, the corresponding area of the front camera cannot display the picture.
SUMMERY OF THE UTILITY MODEL
The utility model provides a printing opacity display panel, display panel and display device to solve above-mentioned problem.
In a first aspect, an embodiment of the present invention provides a display panel, which includes a plurality of pixel groups, each pixel group includes two or more sub-pixels, and each pixel group includes: a first electrode assembly; light emitting structures on the first electrode assembly, the number of the light emitting structures corresponding to the number of sub-pixels in the pixel group, adjacent light emitting structures being spaced apart from each other; and a second electrode on the light emitting structure, wherein the first electrode assembly includes: the light-transmitting conducting layer is in contact connection with each light-emitting structure of the pixel group; and each reflecting piece is arranged corresponding to one light-emitting structure, and the reflecting pieces are positioned on one side of the light-transmitting conducting layer back to the light-emitting structures.
According to an aspect of the embodiment of the present invention, the light-transmitting display panel further includes a substrate, the pixel groups are located on the substrate, wherein in each pixel group, the light-transmitting conductive layer is a continuous surface structure layer, and the orthographic projection of the light-transmitting conductive layer on the substrate covers the orthographic projection of all the reflectors in the pixel group on the substrate.
According to an aspect of the embodiment of the present invention, the light-transmitting display panel further includes a device layer, the device layer is located on the substrate, the pixel group is located on the device layer, the device layer includes a pixel circuit, and the first electrode assembly of each pixel group is electrically connected to a corresponding pixel circuit.
According to an aspect of an embodiment of the present invention, the first electrode assembly is connected to the corresponding pixel circuit through the light-transmitting conductive layer.
According to an aspect of the embodiments of the present invention, each of the reflectors includes: the reflecting layer is positioned on one side of the light-transmitting conducting layer, which is back to the light-emitting structure; and the bearing layer is positioned on one side of the reflecting layer, which is back to the light-emitting structure.
According to an aspect of the embodiments of the present invention, each reflector further includes: and the light-transmitting layer is positioned between the reflecting layer and the light-transmitting conducting layer.
According to an aspect of the embodiments of the present invention, the orthographic projection of each reflector on the substrate is composed of one first pattern unit or composed of two or more first pattern units in a mosaic manner, and the first pattern unit includes at least one selected from the group consisting of a circle, an ellipse, a dumbbell, a gourd, and a rectangle.
According to an aspect of the embodiments of the present invention, the orthographic projection of each light emitting structure on the substrate is composed of one second pattern unit or composed of two or more second pattern units in a mosaic manner, and the second pattern unit includes at least one selected from the group consisting of a circle, an ellipse, a dumbbell, a gourd, and a rectangle.
According to an aspect of the embodiments of the present invention, in each pixel group, the sub-pixels are arranged at intervals in the first direction.
According to an aspect of the embodiments of the present invention, in each pixel group, the sub-pixels adjacent to each other in the first direction are arranged to be shifted from each other in the second direction, and the second direction crosses the first direction.
According to an aspect of the embodiments of the present invention, in each pixel group, a central line of two sub-pixels spaced by one sub-pixel in the first direction is parallel to the first direction.
In a second aspect, the embodiment of the present invention provides a display panel, which has a first display area and a second display area, wherein the transmittance of the first display area is greater than the transmittance of the second display area, and the first display area is provided with a light-transmitting display panel according to any of the above embodiments.
In a third aspect, an embodiment of the present invention provides a display device, which includes the light-transmitting display panel according to any one of the above embodiments.
According to the present invention, the first electrode assembly of each pixel group includes the light-transmitting conductive layer and the reflective member. On the one hand, the light-transmitting conducting layer is in contact connection with each light-emitting structure of the pixel group, so that power is directly supplied to the plurality of light-emitting structures, and compared with a scheme that a plurality of pixel electrodes are connected through connecting wires in a traditional light-transmitting display panel, excessive contact resistance of the power supply structure between the pixel circuit and the light-emitting structure is avoided, a metal bridging structure is not needed, and power supply efficiency is improved while higher light transmittance of the light-transmitting display panel is guaranteed. On the other hand, the reflecting piece can be used for forming a micro-cavity structure, and the display effect of the light-transmitting display panel is improved.
In some optional embodiments, the light-transmitting conductive layer is a continuous surface structure layer, so that the resistance of the power supply structure in the light-transmitting display panel is further reduced, the uniformity of display is improved, and complete and good contact between the light-transmitting conductive layer and the plurality of light-emitting structures is ensured. The light-transmitting conducting layer covers all the reflecting pieces in the pixel group, and the structure of the reflecting pieces can be prevented from being damaged by the light-transmitting conducting layer in the patterning process.
According to the display panel provided by the embodiment of the utility model, the light transmittance of the first display area of the display panel is higher, and when the first display area is used for the integration area of photosensitive components such as an image acquisition device, the imaging effect or other photosensitive effects can be improved; when the first display area is used for the under-screen fingerprint identification area, the fingerprint identification sensitivity can be improved.
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Other features, objects and advantages of the invention will become apparent from the following detailed description of non-limiting embodiments thereof, when read in conjunction with the accompanying drawings, in which like reference characters designate the same or similar parts throughout the figures thereof, and which are not to scale.
Fig. 1 shows a schematic top view of a transmissive display panel according to an embodiment of the present invention;
fig. 2 is a schematic cross-sectional view of a light-transmissive display panel according to an embodiment of the present invention;
fig. 3 is a schematic cross-sectional view of a light-transmissive display panel according to another embodiment of the present invention;
fig. 4 is a schematic top view of a first electrode assembly in a light-transmissive display panel according to another embodiment of the present invention;
fig. 5 is a schematic top view of a sub-pixel arrangement in a transmissive display panel according to still another embodiment of the present invention;
fig. 6 shows a schematic structural diagram of a display panel according to an embodiment of the present invention.
Detailed Description
The features and exemplary embodiments of various aspects of the present invention will be described in detail below, and in order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. It will be apparent to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the invention by illustrating examples of the invention.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
It will be understood that when a layer, region or layer is referred to as being "on" or "over" another layer, region or layer in describing the structure of the component, it can be directly on the other layer, region or layer or intervening layers or regions may also be present. Also, if the component is turned over, one layer or region may be "under" or "beneath" another layer or region.
On intelligent electronic devices such as mobile phones and tablet computers, photosensitive components such as a front camera, an infrared light sensor, and a proximity light sensor need to be integrated on a side where a display panel is disposed. In some embodiments, a transparent display area may be disposed on the electronic device, and the photosensitive component is disposed below the transparent display area, so that full-screen display of the electronic device is achieved under the condition that the photosensitive component is ensured to work normally.
In order to further improve the transmittance of the light-transmitting display area, anodes of a plurality of sub-pixels can be interconnected in the display panel of the light-transmitting display area, and because the anode interconnection structure is made of a light-transmitting material, the contact resistance between the anode interconnection structure and the anode is large, and the light-emitting effect of the pixels is influenced.
In order to solve the above problem, embodiments of the present invention provide a light-transmitting display panel, a display panel, and a display device, and various embodiments of the light-transmitting display panel, the display panel, and the display device will be described below with reference to the accompanying drawings.
An embodiment of the utility model provides a printing opacity display panel, here, printing opacity display panel's luminousness more than or equal to 20%. Fig. 1 and fig. 2 respectively show a schematic top view and a schematic cross-sectional view of a transparent display panel according to an embodiment of the present invention, in which fig. 1 only schematically shows a part of the area of the transparent display panel, and an AA line in fig. 1 shows a position of the cross-section of fig. 2.
The Light-transmitting display panel 100 may be an Organic Light Emitting Diode (OLED) display panel.
The light-transmitting display panel 100 includes a plurality of pixel groups G1, each pixel group G1 including two or more sub-pixels SP.
The plurality of sub-pixels SP of the light transmissive display panel 100 may include a red sub-pixel, a green sub-pixel, and a blue sub-pixel. In some embodiments, each pixel group G1 includes subpixels SP of the same color.
Each pixel group G1 includes a first electrode assembly 110, a light emitting structure 120, and a second electrode 130. The light emitting structures 120 are positioned on the first electrode assembly 110, the number of the light emitting structures 120 corresponds to the number of the sub-pixels SP in the pixel group G1, and the adjacent light emitting structures 120 are spaced apart from each other. The second electrode 130 is positioned at the light emitting structure 120.
In some embodiments, the light emitting structure 120 includes an OLED light emitting layer, which may further include at least one of a hole injection layer, a hole transport layer, an electron injection layer, or an electron transport layer, according to the design requirements of the light emitting structure 120. One of the first electrode assembly 110 and the second electrode 130 is an anode of the sub-pixel SP, and the other is a cathode of the sub-pixel SP. Here, the first electrode assembly 110 is an anode of the subpixel SP, and the second electrode assembly 130 is a cathode of the subpixel SP. In some embodiments, the sub-pixels SP of the light-transmissive display panel 100 share the same second electrode 130.
The first electrode assembly 110 includes a light-transmitting conductive layer 111 and a reflective member 112. The light-transmitting conductive layer 111 is in contact connection with each of the light emitting structures 120 of the pixel group G1. Each of the reflective members 112 is disposed corresponding to one of the light emitting structures 120, and the reflective member 112 is disposed on a side of the light-transmissive conductive layer 111 facing away from the light emitting structure 120.
According to the light-transmissive display panel 100 of the embodiment of the present invention, the first electrode assembly 110 of each pixel group G1 includes the light-transmissive conductive layer 111 and the reflective member 112. On the one hand, the light-transmitting conductive layer 111 is in contact connection with each light-emitting structure 120 of the pixel group G1, so that power is directly supplied to the light-emitting structures 120, and compared with a scheme that a plurality of pixel electrodes are connected through a connecting wire in a traditional light-transmitting display panel 100, excessive contact resistance of the power supply structure between the pixel circuit 151 and the light-emitting structure 120 is avoided, and meanwhile, a metal bridging structure is not required to be adopted, so that the power supply efficiency is improved while the higher light transmittance of the light-transmitting display panel 100 is ensured. On the other hand, the reflective member 112 can be used to form a micro-cavity structure, thereby improving the display effect of the light-transmitting display panel 100.
In some embodiments, the light-transmissive display panel 100 further includes a substrate 140, and the pixel group G1 is located on the substrate 140. In each pixel group G1, the light-transmitting conductive layer 111 is a continuous surface structure layer, and the orthographic projection of the light-transmitting conductive layer 111 on the substrate 140 covers the orthographic projection of all the reflectors 112 in the pixel group G1 on the substrate 140.
According to the light-transmitting display panel 100 of the above embodiment, the light-transmitting conductive layer 111 is a continuous surface structure layer, so that the resistance of the power supply structure in the light-transmitting display panel 100 is further reduced, the uniformity of display is improved, and complete and good contact between the light-transmitting conductive layer 111 and the plurality of light-emitting structures 120 is ensured. The light-transmitting conductive layer 111 covers all the reflective members 112 in the pixel group G1, so that the light-transmitting conductive layer 111 can be prevented from damaging the structures of the reflective members 112 during the patterning process.
In some embodiments, the light transmissive display panel 100 further includes a device layer 150, a planarization layer 160, and a pixel definition layer 170. A device layer 150 is located on the substrate 140, a planarization layer 160 is located on the device layer 150, and a pixel definition layer 170 is located on the planarization layer 160. The pixel defining layer 170 includes a plurality of openings 171, and each opening 171 correspondingly accommodates one of the light emitting structures 120.
Pixel group G1 is located on device layer 150, and device layer 150 includes pixel circuits 151. A partial structure of the pixel circuit 151 is exemplarily shown in fig. 2, and the pixel circuit 151 may actually include interconnected Thin-film transistors (TFTs), capacitors, and the like as needed. The first electrode assembly 110 of each pixel group G1 is electrically connected to a corresponding one of the pixel circuits 151 such that one of the pixel circuits 151 can simultaneously drive the display of two or more sub-pixels SP of the corresponding pixel group G1.
In some embodiments, the first electrode assembly 110 is connected to the corresponding pixel circuit 151 through the light-transmitting conductive layer 111, so that a power supply signal of the pixel circuit 151 is directly provided to the light-emitting structure 120 through the light-transmitting conductive layer 111 without passing through the reflective member 112, and thus a contact resistance between the light-transmitting conductive layer 111 and the reflective member 112 in the power supply structure can be omitted, thereby improving power supply efficiency and further improving display effect.
In the present embodiment, each of the reflective members 112 includes a reflective layer 112a and a carrier layer 112 b. The reflective layer 112a may be a metallic reflective layer, for example, made of silver material. The reflective layer 112a is located on a side of the light-transmitting conductive layer 111 facing away from the light-emitting structure 120. The carrier layer 112b may be made of a light-transmitting conductive material, such as Indium Tin Oxide (ITO), Indium zinc oxide (izo), or the like. The carrier layer 112b is located on a side of the reflective layer 112a facing away from the light emitting structure 120. The carrier layer 112b is used for carrying the reflective layer 112a, and prevents the reflective layer 112a from directly contacting the planarization layer 160.
Fig. 3 is a schematic cross-sectional view of a transmissive display panel according to another embodiment of the present invention, and an AA line in fig. 1 shows a position of the cross-section of fig. 2. The structure of the light-transmitting display panel 100 of the present embodiment is similar to that of the light-transmitting display panel 100 of the previous embodiment, and the differences from the previous embodiment will be described below, and the similarities will not be described in detail.
Unlike the previous embodiments, each of the reflective members 112 of the present embodiment includes a reflective layer 112a, a carrier layer 112b, and a transparent layer 112 c. The reflective layer 112a is located on a side of the light-transmitting conductive layer 111 facing away from the light-emitting structure 120. The carrier layer 112b is located on a side of the reflective layer 112a facing away from the light emitting structure 120. The light-transmitting layer 112c is located between the reflective layer 112a and the light-transmitting conductive layer 111. The light-transmitting layer 112c may be made of a light-transmitting conductive material, such as ITO, indium zinc oxide, or the like.
In the above embodiments, the shape of the reflective member 112 is substantially rectangular, and in other embodiments, the shape of the reflective member 112 may not be limited to the above examples.
Fig. 4 is a schematic top view of a first electrode assembly in a light-transmitting display panel according to another embodiment of the present invention. Wherein the orthographic projection of each reflector 112 on the substrate 140 is substantially dumbbell-shaped. In other embodiments, the orthographic projection of each reflector 112 on the substrate 140 is comprised of one first pattern element or is comprised of a concatenation of more than two first pattern elements, wherein the first pattern elements comprise at least one selected from the group consisting of circles, ovals, dumbbells, gourd shapes, rectangles.
Furthermore, in some embodiments, the orthographic projection of each light emitting structure 120 on the substrate 140 may be composed of one second pattern unit or composed of a concatenation of two or more second pattern units, the second pattern unit comprising at least one selected from the group consisting of a circle, an ellipse, a dumbbell, a gourd, and a rectangle.
In the above-described embodiment, the arrangement of the sub-pixels SP within each pixel group G1 is exemplified, however, in some other embodiments, the arrangement of the sub-pixels SP within each pixel group G1 is not limited to the above-described example.
Fig. 5 is a schematic top view illustrating a sub-pixel arrangement manner in a transmissive display panel according to still another embodiment of the present invention. In each pixel group G1, the sub-pixels SP are arranged at intervals in the first direction X. In some embodiments, in each pixel group G1, the sub-pixels SP adjacent in the first direction X are arranged offset from each other in a second direction Y intersecting the first direction X, for example, the second direction Y is perpendicular to the first direction X. In some embodiments, in each pixel group G1, a central line of two sub-pixels SP arranged one sub-pixel SP apart in the first direction X is parallel to the first direction X.
The embodiment of the utility model provides a still provide a display panel, figure 6 shows the structure schematic diagram according to the utility model relates to a display panel of embodiment. The display panel 1000 has a first display area AA1 and a second display area AA2, and the light transmittance of the first display area AA1 is greater than that of the second display area AA 2. The first display area AA1 is provided with the light-transmitting display panel 100 according to any of the above embodiments.
According to the display panel 1000 of the embodiment of the present invention, the light transmittance of the first display area AA1 of the display panel 1000 is higher, and when the first display area AA1 is used in an integrated area of photosensitive components such as an image capturing device, an imaging effect or other photosensitive effects can be improved; when the first display area AA1 is used for the off-screen fingerprint recognition area, fingerprint recognition sensitivity can be improved.
The embodiment of the present invention further provides a display device, which includes the transmissive display panel 100 of any of the above embodiments. In the light-transmissive display panel 100 of the display device, the first electrode assembly 110 of each pixel group G1 includes a light-transmissive conductive layer 111 and a reflective member 112. On the one hand, the light-transmitting conductive layer 111 is in contact connection with each light-emitting structure 120 of the pixel group G1, so that power is directly supplied to the light-emitting structures 120, and compared with a scheme that a plurality of pixel electrodes are connected through a connecting wire in a traditional light-transmitting display panel 100, excessive contact resistance of the power supply structure between the pixel circuit 151 and the light-emitting structure 120 is avoided, and meanwhile, a metal bridging structure is not required to be adopted, so that the power supply efficiency is improved while the higher light transmittance of the light-transmitting display panel 100 is ensured. On the other hand, the reflective member 112 can be used to form a micro-cavity structure, thereby improving the display effect of the light-transmitting display panel 100.
In accordance with the embodiments of the present invention as set forth above, these embodiments do not set forth all of the details nor limit the invention to the specific embodiments described. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical application, to thereby enable others skilled in the art to best utilize the invention and its various embodiments with various modifications as are suited to the particular use contemplated. The present invention is limited only by the claims and their full scope and equivalents.
Claims (13)
1. A light-transmissive display panel comprising a plurality of pixel groups, each of the pixel groups comprising two or more sub-pixels, each of the pixel groups comprising:
a first electrode assembly;
light emitting structures on the first electrode assembly, the number of the light emitting structures corresponding to the number of the sub-pixels in the pixel group, the light emitting structures being spaced apart from each other; and
a second electrode on the light emitting structure,
wherein the first electrode assembly includes:
a light-transmitting conductive layer in contact connection with each of the light-emitting structures of the pixel group; and
and each reflecting piece corresponds to one light-emitting structure, and is positioned on one side of the light-transmitting conducting layer back to the light-emitting structure.
2. A light-transmissive display panel in accordance with claim 1, further comprising a substrate, wherein the pixel groups are located on the substrate, wherein in each pixel group, the light-transmissive conductive layer is a continuous surface structure layer, and wherein the orthographic projection of the light-transmissive conductive layer on the substrate covers the orthographic projection of all the reflectors in the pixel group on the substrate.
3. A light-transmissive display panel in accordance with claim 2, further comprising a device layer on the substrate, the pixel groups being on the device layer, the device layer comprising pixel circuits, the first electrode assembly of each of the pixel groups being electrically connected to a corresponding one of the pixel circuits.
4. A light-transmitting display panel according to claim 3, wherein the first electrode assembly is connected to the corresponding pixel circuit through the light-transmitting conductive layer.
5. A transmissive display panel in accordance with claim 1, wherein each of the reflective members comprises:
the reflecting layer is positioned on one side, back to the light-emitting structure, of the light-transmitting conducting layer; and
and the bearing layer is positioned on one side of the reflecting layer back to the light-emitting structure.
6. The transmissive display panel according to claim 5, wherein each of the reflective members further comprises:
and the light-transmitting layer is positioned between the reflecting layer and the light-transmitting conducting layer.
7. The transmissive display panel according to claim 2, wherein the orthographic projection of each of the reflectors on the substrate is composed of one first graphic element or is composed of a concatenation of two or more first graphic elements, the first graphic element comprising at least one selected from the group consisting of a circle, an ellipse, a dumbbell, a gourd, and a rectangle.
8. The transmissive display panel according to claim 2, wherein the orthographic projection of each of the light-emitting structures on the substrate is composed of one second graphic element or is composed of a concatenation of two or more second graphic elements, the second graphic elements comprising at least one selected from the group consisting of a circle, an ellipse, a dumbbell, a gourd, and a rectangle.
9. A transmissive display panel according to claim 2, wherein the sub-pixels in each of the pixel groups are arranged at intervals in the first direction.
10. A transmissive display panel according to claim 9, wherein in each of the pixel groups, the sub-pixels adjacent in the first direction are arranged to be shifted from each other in a second direction intersecting the first direction.
11. A transmissive display panel according to claim 9, wherein a central line of two of the sub-pixels arranged with one sub-pixel apart in the first direction in each of the pixel groups is parallel to the first direction.
12. A display panel having a first display region and a second display region, the light transmittance of the first display region being greater than that of the second display region, wherein the first display region is provided with the light-transmissive display panel according to any one of claims 1 to 11.
13. A display device comprising the light-transmitting display panel according to any one of claims 1 to 11.
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| CN114400239A (en) * | 2021-12-21 | 2022-04-26 | 昆山国显光电有限公司 | Display panel, display device and preparation method of display panel |
| WO2023151127A1 (en) * | 2022-02-09 | 2023-08-17 | 深圳市华星光电半导体显示技术有限公司 | Oled display panel and manufacturing method therefor, and oled display module |
| WO2023231256A1 (en) * | 2022-05-30 | 2023-12-07 | 昆山国显光电有限公司 | Display panel, display device, and manufacturing method for display panel |
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