Disclosure of Invention
The present invention aims to solve at least one of the technical problems in the related art to some extent. Therefore, an object of the present invention is to provide a display panel having a first display area with high light transmittance, having a good lighting effect when an optical device is lighted through a screen after the display device is assembled, having excellent usability, being capable of improving color shift and graininess of the first display area, having high resolution, not requiring a transition area with low pixel density, being capable of realizing a real full-screen display, or having a good user experience.
The present invention has been completed based on the following findings and findings:
In the existing under-screen camera technology, a transparent area and a transition area are arranged in a camera area of a display panel, wherein the transparent area only keeps an anode, a pixel driving circuit for driving the camera area to emit light and a driving circuit for driving a pixel electrode of the transparent area are arranged in the transition area, and the pixel driving circuit arranged in the transition area is connected with the pixel electrode through a transparent lead wire, so that the transmittance of the transparent area is higher. However, due to the arrangement of the pixel driving circuit, the pixel density (PPI) of the transparent area and the transition area is reduced, and a certain color cast and a certain granular sense exist in the display picture of the camera area.
In view of this, in one aspect of the present invention, a display panel is provided. According to the embodiment of the invention, the display panel comprises a substrate base plate, wherein the substrate base plate comprises a display area and a non-display area at least positioned at one side of the display area, the display area comprises a first display area and a second display area, the second display area at least partially surrounds the first display area, the non-display area comprises a bending area, a plurality of first light emitting elements positioned at the first display area, a plurality of first pixel circuits positioned at the bending area, the plurality of first light emitting elements and the plurality of first pixel circuits are connected through first wires, a plurality of second light emitting elements positioned at the second display area, and a plurality of second pixel circuits positioned at the second display area, wherein the front projections of the plurality of second light emitting elements and the plurality of second pixel circuits on the substrate base plate at least partially overlap. The first display area in the display panel has high light transmittance, and after the display device is assembled, the lighting effect of the optical device when lighting is carried out through the screen is good, so that the service performance of the optical device is enhanced, the color cast and the granular sense of a display picture of the first display area can be improved, the resolution is high, a transition area with lower pixel density is not required to be arranged, the real full-screen display is realized, and the user experience is good.
According to the embodiment of the invention, the bending region comprises a first bending region and a second bending region, the first bending region is positioned between the first display region and the second bending region, one surface of the substrate positioned in the first bending region is a convex curved surface, one surface of the substrate positioned in the second bending region is a plane, the plurality of first pixel circuits are arranged on the curved surface of the substrate of the first bending region, or the plurality of first pixel circuits are positioned on the plane of the substrate of the second bending region.
According to the embodiment of the invention, the first inflection region comprises a first sub-inflection region and a second sub-inflection region, the first sub-inflection region and the second sub-inflection region are arranged at intervals, the first pixel circuit is positioned in the first sub-inflection region and the second sub-inflection region, or the second inflection region comprises a third sub-inflection region and a fourth sub-inflection region, the third sub-inflection region and the fourth sub-inflection region are arranged at intervals, the first pixel circuit is positioned in the third sub-inflection region and the fourth sub-inflection region, or the first pixel circuit is positioned in the first sub-inflection region and the fourth sub-inflection region, or the first pixel circuit is positioned in the second sub-inflection region and the third sub-inflection region.
According to an embodiment of the present invention, the display panel further includes a plurality of rows of first scan lines and a plurality of rows of second scan lines, the plurality of rows of first scan lines are at least located in the second display area, the plurality of rows of second scan lines are at least located in the bending area, and the plurality of rows of first scan lines and the plurality of rows of second scan lines are electrically connected in one-to-one correspondence through second conductive lines.
According to an embodiment of the present invention, the display panel further includes a plurality of columns of second data lines, at least some of the plurality of columns of second data lines extend from the second display region to the bending region, and orthographic projections of the plurality of columns of second data lines on the flexible substrate do not overlap with the first display region.
According to an embodiment of the present invention, the first conductive line further includes a first conductive line segment electrically connected to the first light emitting element, a second conductive line segment electrically connected to the first pixel circuit, and a third conductive line segment disposed between the first conductive line segment and the third conductive line segment, wherein the second conductive line segment is at least partially located in the first bending region.
According to an embodiment of the present invention, an insulating layer is further disposed between the second bending region and the display region, and the first conductive line is disposed in the insulating layer.
According to an embodiment of the present invention, the electronic device further includes a driving chip and a flexible circuit board, at least one of which is disposed in the bending region.
According to the embodiment of the invention, at least one of the driving chip and the flexible circuit board is arranged on the curved surface of the substrate board of the first bending region, or at least one of the driving chip and the flexible circuit board is positioned on the plane of the substrate board of the second bending region.
In yet another aspect of the present invention, a display device is provided. According to an embodiment of the invention, the method comprises the display panel and an optical device, wherein the optical device is arranged on one side of the display panel, and the orthographic projection of the optical device on the display panel is positioned in a first display area of the display panel. The optical device of the display device has good lighting effect when lighting is carried out through the screen, high resolution, no transition area with lower pixel density is needed, and further, real full-screen display can be realized, and the user experience is good.
Detailed Description
Embodiments of the present invention are described in detail below. The following examples are illustrative only and are not to be construed as limiting the invention. The examples are not to be construed as limiting the specific techniques or conditions described in the literature in this field or as per the specifications of the product.
In one aspect of the present invention, referring to fig. 1 to 7, the display panel 10 includes a substrate 100, the substrate 100 includes a display area and a non-display area 2 at least on one side of the display area, the display area includes a first display area 11 and a second display area 12, the second display area 12 at least partially surrounds the first display area 11, the non-display area 2 includes a bending area 110, a plurality of first light emitting elements 3a are located in the first display area 11, a plurality of first pixel circuits 111-1 are located in the bending area 110, the plurality of first light emitting elements 3a and the plurality of first pixel circuits 111-1 are connected by a first wire 41 (the schematic structural diagram refers to fig. 4 to 7), a plurality of second light emitting elements 3b are located in the second display area 12, a plurality of second pixel circuits 111-2 are located in the second display area 12, and the plurality of second light emitting elements 3b and the plurality of second pixel circuits 111-1 are located in the second display area 12, and the plurality of second pixel circuits 111-1 are at least partially overlapped in the front view of the substrate 100 (the schematic structural diagram refers to fig. 4 to fig. 7). Compared with the display panel in the related art, the pixel circuit which is arranged in the transition area with lower pixel density is arranged on the bending area, so that the first display area in the display panel has high light transmittance, after the display device is assembled, the optical device is good in lighting effect when lighting is carried out through the screen, and therefore the usability of the optical device is enhanced after the display device is assembled, meanwhile, the first pixel circuit is arranged in the bending area, the color cast and granular sense of a display picture of the first display area can be improved, the resolution is high, and the transition area with lower pixel density is not required to be arranged, so that the display panel realizes real full-screen display, and the user experience is good.
It is understood that, according to the embodiments of the present invention, each of the first light emitting element and the second light emitting element may have a structure of a conventional light emitting element, for example, it specifically includes an anode, a light emitting layer, a cathode, and the like, which will not be described herein.
According to the embodiment of the invention, referring to fig. 1 to 3, the bending region includes a first bending region 112 and a second bending region 113, the first bending region 112 is located between the first display region 11 and the second bending region 113, one surface of the substrate 100 located in the first bending region 112 is a convex curved surface, one surface of the substrate 100 located in the second bending region 113 is a plane, the plurality of first pixel circuits 111-1 are disposed on the curved surface of the substrate 100 in the first bending region 11 (the schematic structure diagram is shown in fig. 3), or the plurality of first pixel circuits 111-1 are located on the plane of the substrate 100 in the second bending region 12 (the schematic structure diagram is shown in fig. 2), therefore, the plurality of first pixel circuits 111-1 are located on the plane of the substrate 100 in the second bending region 12, the pixel driving circuit is easier to manufacture, the pixel units are also easier to electrically connect with the first pixel circuits 111-1, and the first pixel circuits 11 are better in the plane of the first bending region 11, and the first pixel circuits 11-11 are better in the stable display effect, and the first pixel circuits 111-1 are better in the plane of the first bending region 11, and the first pixel circuits are better in the plane of the first bending region 11 and the first lighting region and the first pixel circuits are better in the plane 11.
According to an embodiment of the present application, referring to fig. 4 to 7 (it should be noted that, for convenience of description, the partial plan views herein are schematic structural views of the display panel in a flattened state, and the bending of the bending region is not shown, and the detailed description is not repeated hereinafter; in addition, in the drawings herein, only a portion of the first conductive lines 41 are shown in fig. 4, and only a portion of the first conductive lines 41 are shown in the other drawings herein, it will be understood by those skilled in the art that, although only a portion of the first conductive lines 41 are shown in the partial drawings herein, in the display panel of the present application, the first conductive lines 41 are disposed between the first light emitting element and the first pixel circuit, and will not be repeated hereinafter), the first inflection region may include a first inflection sub-region 112a and a second inflection sub-region 112b, the first inflection sub-region 112a and the second inflection sub-region 112b are disposed at intervals, the first pixel circuit 111-1 is located in the first inflection sub-region 112a and the second inflection sub-region 112b (the schematic diagram is referred to fig. 6), or the second inflection sub-region includes a third inflection sub-region 113a and a fourth sub-region 113b, the third inflection sub-region 113a and the fourth sub-region 113b are disposed at intervals, the first inflection sub-region 112a and the second inflection sub-region 111-1 is located in the first inflection sub-region 111-113 a and the second inflection sub-region 112b (the schematic diagram is referred to fig. 1-112 b) is located in the first inflection sub-region 111-1-fig. 1 and the second inflection sub-region 112b (the schematic diagram is referred to fig. 1 b), therefore, the display panel does not occupy too much space in the display device after being assembled into the display device, in addition, the electrical connection between the first pixel circuit 111-1 and the first light emitting element 3a is more stable, so that the display effect of the first display area 11 is better, and meanwhile, the lighting effect of the optical device can be better enhanced when the display device is assembled into the display device, and the service performance of the optical device is further improved.
In other embodiments of the present invention, it will be understood that, referring to fig. 8, in the display panel, only one first bending region 112 and one second bending region 113 are provided, and the first bending region 112 and the second bending region 113 do not include a plurality of sub-bending regions, that is, whether a plurality of sub-bending regions are included or not, which may be set by a person skilled in the art according to actual needs, and will not be repeated herein, and in addition, for convenience of description, in the following figures, the specific structure of the display panel is described by taking that the first bending region 112 and the second bending region 113 do not include a plurality of sub-bending regions as an example.
According to an embodiment of the present invention, referring to fig. 9, the display panel may further include a plurality of rows of first scan lines 43 and a plurality of rows of second scan lines 42, where the plurality of rows of first scan lines 43 are at least located in the second display area 12, the plurality of rows of second scan lines 42 are at least located in the bending area, and the plurality of rows of first scan lines 43 and the plurality of rows of second scan lines 42 are electrically connected in a one-to-one correspondence manner through second conductive lines 44 (it is to be noted that some first scan lines are not shown in the present drawings, and will not be repeated later), and this wiring method can make the circuit connection relationship between the first scan lines and the second scan lines unchanged on the basis of changing the positions of the first scan lines, and the first display area and the second display area can still be driven and displayed by the first scan lines, and the first scan lines in the above arrangement method are not easy to block the first display area, so as to further improve the light transmittance of the optical device, and at the same time, also can better improve the color shift and the graininess of the first display area, so that the arrangement of the pixels can be fully arranged to realize the overall display panel according to the overall concept of the current display.
According to an embodiment of the present invention, referring to fig. 10, the display panel further includes a plurality of columns of second data lines 45, at least a portion of the plurality of columns of second data lines 45 extend from the second display area 12 to the bending area, orthographic projections of the plurality of columns of second data lines 45 on the flexible substrate do not overlap with the first display area 11, the wiring manner can still drive the pixel units in the first display area 11 to emit light based on a change of a position of the second data lines, and the second data lines in the arrangement manner are not easy to block the first display area, thereby further improving light transmittance of the optical device, and simultaneously, color cast and graininess of the first display area can be better.
It will be appreciated that referring to fig. 11, the display panel may further include a plurality of rows of first scan lines 43 and a plurality of rows of second scan lines 42, where the plurality of rows of first scan lines 43 are at least located in the second display area 12, the plurality of rows of second scan lines 42 are at least located in the bending area, and the plurality of rows of first scan lines 43 and the plurality of rows of second scan lines 42 are electrically connected in a one-to-one correspondence through second conductive lines 44, and the display panel further includes a plurality of columns of second data lines 45, at least part of the plurality of columns of second data lines 45 extend from the second display area 12 to the bending area, and the orthographic projection of the plurality of columns of second data lines 45 on the flexible substrate does not overlap with the first display area 11, and the above-mentioned first conductive lines, second conductive lines and second data lines may be arranged in a manner that does not easily block the first display area, thereby further increasing the light transmittance of the optical device, and at the same time, and also improving the color cast and the particle sense of the first display area, so that the wiring manner can realize the full-scale display panel that the full-scale display panel can be placed without requiring a transition layout, and the full-scale display circuit.
According to an embodiment of the present invention, referring still further to fig. 12, the first conductive line may further include a first conductive line segment 41a, a second conductive line segment 41b, and a third conductive line segment 41c, where the first conductive line segment 41a is electrically connected to the first light emitting element 3a, the third conductive line segment 41c is electrically connected to the first pixel circuit 111-1, and the second conductive line segment 41b is disposed between the first conductive line segment 41a and the third conductive line segment 41c, and the second conductive line segment 41b is at least partially located in the first bending region. Specifically, referring to FIG. 13, the thin film transistor array layer is disposed on the first surface of the substrate 100 and has a first via 521 therethrough in the thin film transistor array layer, the orthographic projection of the first via 521 on the substrate 100 at least partially overlapping with the orthographic projection of the first bending region 112 on the substrate 100, a first planarization layer 53 disposed on the first surface and on a surface of the thin film transistor array layer remote from the substrate 100, and a second planarization layer 55 disposed on a portion of the first planarization layer 53 remote from the substrate 100 and on a surface of the second wire segment 41b remote from the substrate 100.
According to an embodiment of the present invention, further, the second wire segment 41b is disposed on a surface of the first planarization layer 53 away from the thin film transistor array layer, and the orthographic projection of the second wire segment 41b on the substrate 100 and the orthographic projection of the first bending region 112 on the substrate 100 at least partially overlap (1) one end is electrically connected to the first wire segment 41a through a second via 551 penetrating through the second planarization layer 55, the other end is electrically connected to the third wire segment (not shown) through a third via 531 penetrating through the first planarization layer 53, a portion of the first wire segment 41a is disposed in the second via 551, and the material of the first wire segment 41a is a light-transmitting material (see fig. 13 in a schematic structural view), (2) one end is electrically connected to the first wire segment 41a through a third via penetrating through the second planarization layer 55, and one end is electrically connected to the first scanning line edge (not shown) in the other end of the first planarization layer through a third via 531 penetrating through the first planarization layer 53. Specifically, the light-transmitting material may be indium tin oxide, and those skilled in the art will understand that it may also be other kinds of light-transmitting conductive materials, which will not be described herein. The wiring mode can still drive the pixel units in the first display area to emit light on the basis of the position change of the second wire segment 41b, the second wire segment 41b in the setting mode is not easy to shade the first display area, so that the light transmittance of an optical device is further improved, meanwhile, the color cast and the particle feel of the first display area can be better improved, the pixel driving circuit is not required to be placed in the transition area in the wiring mode, the real full-screen display is realized, the full-screen display accords with the modern popular full-screen concept, in addition, the transparent electrode layer is arranged, the light transmittance in the first display area is better, the lighting effect of the optical device is further improved, and the service performance of the optical device is better.
According to the embodiments of the present invention, it is understood that the foregoing tft array layer may specifically include a structure of a conventional tft array layer in the related art, and the specific structure thereof is the same as that of the tft array layer in the related art, and will not be described herein in detail.
According to the embodiments of the present invention, it is understood that, in order to improve the light transmittance of the first display area, in other embodiments of the present invention, a through hole may be formed on the interlayer insulating layer, the first gate insulating layer, the second gate insulating layer, or the first planarization layer and the second planarization layer in the first display area, or the interlayer insulating layer, the first gate insulating layer, and the second gate insulating layer in the first display area may be removed, so as to improve the light transmittance in the first display area.
In the drawings herein, a driving back plate of LTPS structure is shown, and those skilled in the art will understand that the driving back plate may be an oxide or LTPO structure, which will not be repeated here.
In other embodiments of the present invention, referring to fig. 14, an insulating layer 6 is further disposed between the second bending region 112 and the display region, and the first conductive wire is disposed in the insulating layer 6, so that the first conductive wire may be directly disposed in the insulating layer 6, and the first conductive wire is not bent, so that the electrical connection between the first pixel driving circuit 111-1 and the light emitting element is not easy to break, so that the display effect in the first display region is better, and the lighting effect of the optical device is better enhanced after the display device is assembled, so that the service performance of the optical device is further improved.
According to an embodiment of the present invention, referring to fig. 15, the display panel further includes a driving chip and a flexible circuit board, at least one 200 of the driving chip and the flexible circuit board is disposed in the bending region, and the display panel can better realize a full screen display by the structure of the flexible substrate provided with the bending portion. According to the embodiment of the invention, further, at least one of the driving chip and the flexible circuit board is arranged on the curved surface of the substrate 100 of the first bending region 112, or referring to fig. 15, at least one of the driving chip and the flexible circuit board 200 is arranged on the plane of the substrate 100 of the second bending region 113, so that the driving chip or the flexible circuit board is more convenient to arrange, the electric connection between the driving chip or the flexible circuit board and the display panel is more stable, and the display effect of the display panel is better, and in addition, the display panel can realize the full screen display better by the structure of the flexible substrate provided with the bending part.
In another aspect of the present invention, a method of fabricating a display panel is provided. Referring to fig. 16, according to an embodiment of the present invention, the method includes:
s100, forming a substrate base plate;
s200, forming a first pixel circuit and a second pixel circuit;
according to the embodiment of the present invention, the arrangement manner of the first pixel circuit and the second pixel circuit is not particularly limited, and will not be described in detail herein. Therefore, the method is simple and convenient to operate, easy to realize and easy for industrial production.
S300, forming a first light-emitting element and a second light-emitting element.
According to an embodiment of the present invention, the step of forming the first light emitting element and the second light emitting element may include the step of forming an anode, a pixel defining layer, a light emitting element, a cathode, and a packaging film, and the specific processes thereof may be conventional processes, which are not described herein again. Therefore, the method is simple and convenient to operate, easy to realize and easy for industrial production.
And S400, forming a bending area so as to obtain the display panel.
According to an embodiment of the present invention, referring to fig. 17, the step of forming the bending region at s400 further includes:
S410, a plurality of preset pattern groups are defined on the prefabricated plate, wherein each preset pattern group comprises two preset patterns, and the two preset patterns in each preset pattern group are arranged in a central symmetry mode.
According to the embodiment of the application, as will be understood by those skilled in the art, referring to fig. 18, two predetermined patterns in each predetermined pattern group are arranged in a central symmetry manner 114, and because a plurality of predetermined patterns are cut out on a whole prefabricated plate respectively during manufacturing, due to the bending area in the application, the bending area occupies a certain space on the prefabricated plate, and the width of the bending area is different from that of other parts on the substrate, when the predetermined patterns of a plurality of substrate are directly arranged in the same direction, a large amount of waste is generated during cutting the prefabricated plate, thus causing waste of the prefabricated plate.
S420, cutting the preset pattern;
According to the embodiment of the invention, the technological conditions and parameters of the cutting process are not particularly limited, and a person skilled in the art can flexibly select the cutting process according to actual needs, and are not repeated here.
And S430, bending the corresponding part of the bending region on the preset pattern towards one side of the substrate base plate.
According to the embodiment of the present invention, the bending manner, process conditions and parameters of the bending region are not particularly limited, so long as the bending region is bent towards one side of the substrate, and a person skilled in the art can flexibly select the bending region according to actual needs, which is not repeated here.
In summary, according to the embodiments of the present invention, the method for manufacturing the display panel is provided, the method is simple and convenient to operate, easy to implement, and easy to implement in industrial production, the display panel can be effectively manufactured, the first display area in the manufactured display panel has high light transmittance, after the display device is assembled, the lighting effect of the optical device when lighting is performed through the screen is good, thus enhancing the service performance of the optical device, and the color cast and the granular feel of the display screen of the first display area can be improved, so that the resolution is high, no transition area with lower pixel density is required to be provided, and thus the real full-screen display is realized, and the user experience is good.
In yet another aspect of the present invention, a display device is provided. According to an embodiment of the invention, the method comprises the display panel and the optical device, wherein the optical device is arranged on one side of the display panel, and the orthographic projection of the optical device on the display panel is positioned in a first display area of the display panel. Referring to fig. 19, the optical device 4 of the display device has good lighting effect when lighting is performed through a screen, high resolution, no transition region with lower pixel density is required, and thus real full-screen display can be realized, and user experience is good.
According to an embodiment of the invention, the optical device 4 may comprise a front camera, an infrared sensor, an infrared lens, a floodlight sensing element, an ambient light sensor or a lattice projector, etc. Therefore, the lighting device has wide application range, can be used for lighting through a screen, has a good lighting effect, and enhances the service performance of the optical device.
According to an embodiment of the invention, the front projection of the optical device on the display area of the display panel is located in the first display area of the display panel, which does not affect the front projection of other non-optical devices on the display area, and may also include distance sensors, speakers, microphones, etc.
According to an embodiment of the invention, the optical device may be arranged on a surface of the display panel remote from the user. Therefore, a bang area is not required to be set in the display device, so that real full-screen display is realized, and the user experience is good.
According to an embodiment of the invention, the display device may be a mobile phone, a tablet computer, a wearable device, a game machine, etc.
According to the embodiment of the invention, the display device further comprises the structure and components of a conventional display device, which are not repeated herein.
In the description of the present invention, it should be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.