CN114695790A - OLED display panel and OLED display device - Google Patents
OLED display panel and OLED display device Download PDFInfo
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- CN114695790A CN114695790A CN202210272336.8A CN202210272336A CN114695790A CN 114695790 A CN114695790 A CN 114695790A CN 202210272336 A CN202210272336 A CN 202210272336A CN 114695790 A CN114695790 A CN 114695790A
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- H10K50/00—Organic light-emitting devices
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- H10K50/805—Electrodes
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- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/17—Passive-matrix OLED displays
- H10K59/179—Interconnections, e.g. wiring lines or terminals
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- H—ELECTRICITY
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Abstract
The application provides an OLED display panel and an OLED display device; this OLED display panel improves the transmissivity of light in the printing opacity district through making the substrate form the via hole in the printing opacity district to through setting up the negative pole suppression layer, make the luminousness of negative pole suppression layer be greater than the luminousness of public electrode layer, reduce the thickness of the public electrode layer in printing opacity district, make the light that public electrode layer blockked less can not block light even, further improve the light transmissivity in printing opacity district.
Description
Technical Field
The application relates to the technical field of display, in particular to an OLED display panel and an OLED display device.
Background
The OLED (Organic Light Emitting Diode) display technology is widely used due to advantages of high contrast, low power consumption, flexibility, and the like. The existing display device can set optical elements such as a front camera and face recognition under a display screen in order to improve the screen ratio, but because the whole face of a cathode is set, the light transmittance of the cathode is low, most of light can be blocked by the cathode, the substrate can block blue light, the light can not penetrate through the display screen to reach the optical elements, and the optical elements can not normally work.
Therefore, the conventional OLED display device has the technical problem that the optical element cannot normally work due to low cathode light transmittance.
Disclosure of Invention
The embodiment of the application provides an OLED display panel and an OLED display device, which are used for relieving the technical problem that an optical element cannot normally work due to the fact that the cathode light transmittance of an existing OLED display device is low.
The embodiment of the present application provides an OLED display panel, which includes:
a substrate;
the driving circuit layer is arranged on one side of the substrate;
the pixel electrode layer is arranged on one side, far away from the substrate, of the driving circuit layer;
the light emitting functional layer is arranged on one side, far away from the driving circuit layer, of the pixel electrode layer;
the public electrode layer is arranged on one side, far away from the pixel electrode layer, of the light-emitting functional layer;
the OLED display panel comprises a first display area and a second display area, the second display area comprises a light-transmitting area and a light-emitting area, the light-transmitting area corresponds to the position where an electronic element is arranged, a through hole is formed in the light-transmitting area, the OLED display panel further comprises a cathode inhibition layer arranged in the light-transmitting area, the cathode inhibition layer is arranged on one side, away from the pixel electrode layer, of the light-emitting function layer, the light transmittance of the cathode inhibition layer is larger than that of the common electrode layer, and the thickness of the common electrode layer located in the light-emitting area is larger than that of the common electrode layer located in the light-transmitting area.
In some embodiments, the light emitting function layer includes a hole layer, an electron layer, and a light emitting layer disposed between the hole layer and the electron layer, and the adhesion force of the electron layer to the common electrode layer is greater than the adhesion force of the common electrode layer to the cathode inhibiting layer.
In some embodiments, the light-emitting functional layer includes a pixel defining layer defining a pixel region, and the cathode inhibiting layer is spaced apart from the pixel region.
In some embodiments, the cathode inhibition layer is disposed corresponding to the via hole of the substrate, and a width of a projection of the cathode inhibition layer on the substrate is smaller than a width of the via hole of the substrate.
In some embodiments, the cross-sectional shape of the via includes a trapezoid, and a width of a side of the via near the driver circuit layer is greater than a width of a side of the via away from the driver circuit layer.
In some embodiments, the substrate includes a first flexible layer, a second flexible layer, and a barrier layer disposed between the first flexible layer and the second flexible layer, the first flexible layer is disposed on a side of the barrier layer away from the second flexible layer, and the first flexible layer is formed with a via.
In some embodiments, a filler material is disposed within the via, the filler material having a light transmittance greater than a light transmittance of the substrate.
In some embodiments, the common electrode layer is formed with a through hole, and the cathode inhibition layer is disposed corresponding to the through hole.
In some embodiments, the cathode suppression layer has a thickness less than or equal to a thickness of the common electrode layer.
Meanwhile, an embodiment of the present application provides an OLED display device, including:
the OLED display panel comprises a substrate, a driving circuit layer, a pixel electrode layer, a light-emitting functional layer and a common electrode layer, wherein the driving circuit layer is arranged on one side of the substrate, the pixel electrode layer is arranged on one side, away from the substrate, of the driving circuit layer, the light-emitting functional layer is arranged on one side, away from the driving circuit layer, of the pixel electrode layer, the common electrode layer is arranged on one side, away from the pixel electrode layer, of the light-emitting functional layer, the OLED display panel comprises a first display area and a second display area, the second display area comprises a light-transmitting area and a light-emitting area, the positions of the light-transmitting area correspond to the positions of electronic elements, a through hole is formed in the light-transmitting area of the substrate, the OLED display panel further comprises a cathode inhibition layer arranged in the light-transmitting area, the cathode inhibition layer is arranged on one side, away from the pixel electrode layer, of the light transmittance of the cathode inhibition layer is larger than that of the common electrode layer, the thickness of the common electrode layer positioned in the light emitting area is larger than that of the common electrode layer positioned in the light transmitting area;
and the electronic element is arranged on one side of the OLED display panel and arranged in the light-transmitting area.
Has the advantages that: the application provides an OLED display panel and an OLED display device; the OLED display panel comprises a substrate, a driving circuit layer, a pixel electrode layer, a light-emitting functional layer and a common electrode layer, wherein the driving circuit layer is arranged on one side of the substrate, the pixel electrode layer is arranged on one side of the driving circuit layer away from the substrate, the light-emitting functional layer is arranged on one side of the pixel electrode layer away from the driving circuit layer, the common electrode layer is arranged on one side of the light-emitting functional layer away from the pixel electrode layer, wherein, the OLED display panel comprises a first display area and a second display area, the second display area comprises a light-transmitting area and a light-emitting area corresponding to the arrangement position of the electronic element, the substrate is provided with a via hole in the light-transmitting area, the OLED display panel also comprises a cathode inhibiting layer arranged in the light-transmitting area, the cathode inhibiting layer is arranged on one side of the light-emitting function layer far away from the pixel electrode layer, the light transmittance of the cathode inhibiting layer is greater than that of the common electrode layer, and the thickness of the common electrode layer in the light emitting area is greater than that in the light transmitting area. This application improves the transmissivity of light at the printing opacity district through making the substrate form the via hole in the printing opacity district to through setting up the negative pole suppression layer, make the luminousness on negative pole suppression layer be greater than the luminousness of public electrode layer, reduce the thickness of the public electrode layer in printing opacity district, make the light that public electrode layer blockked less can not block light even, further improve the light transmissivity in printing opacity district.
Drawings
The technical solutions and other advantages of the present application will become apparent from the following detailed description of specific embodiments of the present application when taken in conjunction with the accompanying drawings.
Fig. 1 is a first schematic view of an OLED display panel according to an embodiment of the present disclosure.
Fig. 2 is a second schematic view of an OLED display panel according to an embodiment of the present disclosure.
Fig. 3 is a third schematic view of an OLED display panel according to an embodiment of the present disclosure.
Fig. 4 is a schematic diagram of an OLED display device according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.
The embodiment of the application provides an OLED display panel and an OLED display device, aiming at the technical problem that an optical element cannot normally work due to the fact that the cathode light transmittance of an existing OLED display device is low, and the technical problem is solved.
As shown in fig. 1 and fig. 2, an embodiment of the present application provides an OLED display panel, where the OLED display panel 1 includes:
a substrate 11;
a driver circuit layer 12 provided on one side of the substrate 11;
a pixel electrode layer 13 disposed on a side of the driving circuit layer 12 away from the substrate 11;
a light-emitting functional layer 14 disposed on a side of the pixel electrode layer 13 away from the driving circuit layer 12;
a common electrode layer 15 provided on a side of the light-emitting functional layer 14 away from the pixel electrode layer 13;
the OLED display panel 1 includes a first display region 161 and a second display region 162, the second display region 162 includes a light-transmitting region 162a and a light-emitting region 162b corresponding to the electronic component, the substrate 11 is formed with a via hole 114 in the light-transmitting region 162a, the OLED display panel 1 further includes a cathode inhibiting layer 17 disposed in the light-transmitting region 162a, the cathode inhibiting layer 17 is disposed on the side of the light-emitting functional layer 14 away from the pixel electrode layer 13, the light transmittance of the cathode inhibiting layer 17 is greater than that of the common electrode layer 15, and the thickness L1 of the common electrode layer 15 in the light-emitting region 162b is greater than the thickness L2 of the common electrode layer 15 in the light-transmitting region 162 a.
The embodiment of the application provides an OLED display panel, this OLED display panel improves the transmissivity of light in the printing opacity district through making the substrate form the via hole in the printing opacity district to through setting up the negative pole suppression layer, make the luminousness of negative pole suppression layer be greater than the luminousness of public electrode layer, reduce the thickness of the public electrode layer in printing opacity district, make the light that public electrode layer blockked less can not block light even, further improve the light transmissivity in printing opacity district.
The larger blocking of light by the cathode leads to a problem of a smaller incident light amount of the electronic component. In one embodiment, as shown in fig. 1 and fig. 2, the light emitting function layer 14 includes a hole layer 141, an electron layer 143, and a light emitting layer 142 disposed between the hole layer 141 and the electron layer 143, and the adhesion force of the electron layer 143 to the common electrode layer 15 is greater than the adhesion force of the common electrode layer 15 to the cathode inhibiting layer 17. Through making the adhesion force of electron layer and common electrode layer be greater than the adhesion force of common electrode layer and negative pole inhibition layer for when forming common electrode layer, common electrode layer can normally set up on the electron layer, and on the negative pole inhibition layer, make the difficult or unable formation of common electrode layer, thereby reduce common electrode layer's thickness, make light improve at the regional transmissivity that corresponds the negative pole inhibition layer, avoid common electrode layer to block light.
Specifically, the design of the hole layer and the electron layer is different for different OLED display panel designs, for example, the hole layer includes a hole injection layer and a hole transport layer, the hole transport layer is disposed between the hole injection layer and the light emitting layer, the electron layer includes an electron injection layer and an electron transport layer, and the electron transport layer is disposed between the electron injection layer and the light emitting layer; the hole layer may also include only a hole transport layer, and the electron layer includes an electron transport layer, and for the design of other hole layers and electron layers, the design of the cathode inhibition layer and the substrate in the present application may also be adopted, and the embodiments of the present application are not limited thereto.
The problem of poor light emission effect caused by the cathode inhibition layer arranged on the light emission function layer is solved. In one embodiment, as shown in fig. 1 and fig. 2, the light-emitting function layer 14 includes a pixel defining layer 144, the pixel defining layer 144 defines a pixel region, and the cathode inhibiting layer 17 is spaced apart from the pixel region. The cathode inhibition layer is arranged in the light transmission area, the thickness of the common electrode layer of the light transmission area can be reduced, meanwhile, in order to avoid signal attenuation or instability caused by thinning of the common electrode on the light emitting function layer and influence on normal light emitting of the light emitting layer, a certain distance exists between the cathode inhibition layer and the pixel area, and therefore influence on normal display of the display panel is avoided.
Specifically, as shown in fig. 2, taking a red pixel as an example, the red pixel includes a red light emitting layer 142a, the cathode inhibiting layer 17 has a distance from a region corresponding to the red pixel, and the cathode inhibiting layer has a distance from a region corresponding to the red pixel, so that the red pixel can normally emit light, and the cathode inhibiting layer is prevented from affecting the electrical property of a circuit corresponding to the red pixel.
The problem that light can be lost after passing through the cathode inhibition layer is solved. In one embodiment, as shown in fig. 3, the cathode inhibitor layer 17 is disposed corresponding to the via hole 114 of the substrate 11, and a width L3 of a projection of the cathode inhibitor layer 17 on the substrate 11 is smaller than a width L4 of the via hole 114 of the substrate 11. Through making the width on the negative pole suppression layer be less than the width of through-hole on the substrate for the light that shines through the negative pole suppression layer and gets into OLED display panel all can disperse away through the through-hole, thereby makes light can not pass through common electrode layer and substrate, avoids light to take place great loss, improves the transmissivity of light.
In one embodiment, the cross-sectional shape of the cathode suppression layer includes, but is not limited to, regular polygons such as circles, rectangles, squares, trapezoids, and irregular polygons.
Specifically, the width of the cathode inhibiting layer may be the width of the cathode inhibiting layer when the cathode inhibiting layer is designed in a trapezoidal shape, the width of the upper surface of the cathode inhibiting layer may be the width of the cathode inhibiting layer, the width of the lower surface of the cathode inhibiting layer may be the width of the cathode inhibiting layer, and the average value of the width of the upper surface of the cathode inhibiting layer and the width of the lower surface of the cathode inhibiting layer may be the width of the cathode inhibiting layer. Specifically, since light enters from the upper surface of the cathode inhibitor layer, and light does not pass through the common electrode layer or the common electrode layer having a relatively low thickness, and thus light loss is small, the width of the upper surface of the cathode inhibitor layer may be defined as the width of the cathode inhibitor layer.
Specifically, since light loss is small when light passes through the via hole without passing through the substrate, the width of the via hole on the side away from the driver circuit layer may be used as the width of the via hole, and based on the description of the cathode suppression layer, similarly, the width of the via hole on the side close to the driver circuit layer may be used as the width of the via hole, and the average value of the width of the via hole on the side close to the driver circuit layer and the width of the via hole on the side away from the driver circuit layer may be used as the width of the via hole.
Specifically, L3 may be smaller than L4, and L4 may be smaller than L3+10 micrometers, the width of the projection of the cathode suppression layer on the substrate is smaller than the width of the via hole of the substrate, and the width of the via hole of the substrate is smaller than the width of the cathode suppression layer plus 10 micrometers, so that the width of the via hole of the substrate is larger, and light passing through the cathode suppression layer can pass through the via hole, and at the same time, it is avoided that the width of the via hole is too large, which affects the integrity of the substrate.
In one embodiment, the cross-sectional shape of the via includes rectangular, square, trapezoidal.
In one embodiment, as shown in fig. 3, the cross-sectional shape of the via hole 114 includes a trapezoid shape, and a width of a side of the via hole 114 close to the driving circuit layer is larger than a width of a side of the via hole 114 far from the driving circuit layer. The width of one side close to the driving circuit layer is larger, so that light rays passing through the cathode inhibition layer and light rays passing through the common electrode layer can reach the through hole, and then the through hole is in a trapezoid shape, so that the light rays can be reflected to the electronic element when being irradiated on the substrate, the transmittance of the light rays is improved, and the loss of the light rays is reduced.
Specifically, as shown in fig. 3, in the region where the via hole 114 is formed, an angle a formed by the substrate 11 on the side away from the driver circuit layer is greater than or equal to 45 degrees and less than or equal to 90 degrees. The angle through making the substrate is 45 degrees angles to 90 degrees angles for light can take place the total reflection when shining on the substrate, thereby assembles the light at big visual angle, when improving the transmissivity of light, avoids the loss of light.
In one embodiment, as shown in fig. 1 and fig. 2, the substrate 11 includes a first flexible layer 111, a second flexible layer 113, and a barrier layer 112 disposed between the first flexible layer 111 and the second flexible layer 113, the first flexible layer 111 is disposed on a side of the barrier layer 112 away from the second flexible layer 113, and the first flexible layer 111 is formed with a via 114. Through forming the via hole on first flexible layer, improve the transmissivity of light, nevertheless to barrier layer and second flexible layer, can keep complete structure, avoid destroying the integrality of barrier layer and second flexible layer for OLED display panel separation water oxygen's ability is better.
Specifically, the above embodiment has been described in detail by taking the example where the first flexible layer is formed with the via hole, but the embodiment of the present application is not limited thereto, and for example, the second flexible layer may be formed with the via hole to further improve the transmittance of the light.
In one embodiment, as shown in fig. 2, the via hole 114 is filled with a filling material 18, and the light transmittance of the filling material 18 is greater than that of the substrate 11. Through set up filling material in the via hole to make filling material's luminousness be greater than the luminousness of substrate, make light pass from filling material when passing the printing opacity zone time, improve the transmissivity of light, and through setting up filling material, make filling material improve OLED display panel's integrality, improve OLED display panel's separation ability of water oxygen.
In one embodiment, the refractive index of the filler material is greater than the refractive index of the substrate. Through the refractive index that makes filling material be greater than the refractive index of substrate for in light irradiation filling material back, light can not follow the substrate and diverge away, but takes place the total reflection at the juncture of filling material and substrate, makes the light homoenergetic launch away from filling material, avoids light loss.
In one embodiment, the common electrode layer is formed with a through hole, and the cathode inhibition layer is disposed corresponding to the through hole. Through the common electrode layer forming through holes, the common electrode layer is not arranged on the cathode inhibition layer, light can directly pass through the cathode inhibition layer, and the transmittance of the light is further improved.
Specifically, the thickness of the cathode inhibition layer is less than or equal to the thickness of the common electrode layer. By making the thickness of the cathode inhibition layer less than or equal to the thickness of the common electrode layer, the cathode inhibition layer is prevented from influencing the formation of the subsequent film layer.
In one embodiment, the cathode inhibition layer accounts for more than 5% and 95% or less of the light-transmitting region. The cathode inhibition layer is arranged to improve the light transmittance of the light-transmitting area, but the cathode inhibition layer is prevented from being arranged in the light-emitting area to influence the display.
Specifically, as shown in fig. 2, taking the OLED display panel including the red light emitting layer 142a, the green light emitting layer 142b and the blue light emitting layer 142c as an example, the light transmitting region 162a is located between the light emitting region corresponding to the red light emitting layer 142a and the light emitting region corresponding to the green light emitting layer 142b, and the light transmitting region 162a is located between the green light emitting layer 142b and the blue light emitting layer 142c, the cathode inhibiting layer 17 may be disposed in the light transmitting region 162a to improve the light transmittance of the light transmitting region 162a, and the second display region 162 further includes the non-light emitting region 162c, and for the non-light emitting region 162c, the common electrode layer may be normally formed without disposing a cathode inhibiting layer.
Specifically, when the cathode inhibition layer is provided, it may be determined according to the arrangement manner of the electronic component, for example, when the electronic component is arranged only corresponding to the light transmission region between two sub-pixels, the cathode inhibition layer may be arranged only corresponding to the light transmission region between two sub-pixels, but when the electronic component is arranged corresponding to a plurality of pixels, the cathode inhibition layer may be arranged corresponding to the light transmission region between each sub-pixel in the plurality of pixels, so as to improve the transmittance of light and enable the electronic component to operate normally.
Specifically, the driving circuit layer includes a buffer layer, an active layer, a first gate insulating layer, a first metal layer, a second gate insulating layer, a second metal layer, an interlayer insulating layer, a source drain layer, and a planarization layer.
Meanwhile, the embodiment of the application provides a preparation method of the OLED display panel, which comprises the following steps:
providing a substrate, and carrying out patterning treatment on a first flexible layer in the substrate to obtain a via hole; the substrate comprises a first flexible layer, a barrier layer and a second flexible layer; the OLED display panel comprises a first display area and a second display area, the second display area comprises a light-transmitting area and a light-emitting area, the light-transmitting area corresponds to the arrangement position of the electronic element, and the through hole is arranged in the light-transmitting area;
forming a driving circuit layer on the substrate;
forming a pixel electrode layer on the driving circuit layer;
evaporating a hole layer on the pixel electrode layer by using a universal mask;
evaporating a light-emitting layer on the cavity layer by using a fine metal mask;
evaporating an electronic layer on the luminescent layer by using a universal mask plate;
evaporating a cathode inhibition layer on the electron layer by using a fine metal mask, wherein the projection of the cathode inhibition layer on the substrate is overlapped with the projection of the via hole, and the projection of the cathode inhibition layer on the substrate is not overlapped with the projection of the pixel electrode layer;
evaporating a common electrode layer by using a universal mask plate; the light transmittance of the cathode inhibition layer is larger than that of the common electrode layer, and the thickness of the common electrode layer in the luminous region is larger than that of the common electrode layer in the light-transmitting region.
The application provides a preparation method of an OLED display panel, the OLED display panel prepared by the preparation method of the OLED display panel improves the transmittance of light in a light-transmitting area by enabling a substrate to form a via hole in the light-transmitting area, and enables the transmittance of a cathode inhibition layer to be larger than that of a public electrode layer by arranging the cathode inhibition layer, so that the thickness of the public electrode layer of the light-transmitting area is reduced, light blocked by the public electrode layer is less or even can not be blocked, and the light transmittance of the light-transmitting area is further improved.
Meanwhile, as shown in fig. 1 and 4, an embodiment of the present application provides an OLED display device, including:
an OLED display panel, comprising a substrate 11, a driving circuit layer 12, a pixel electrode layer 13, a light emitting function layer 14 and a common electrode layer 15, wherein the driving circuit layer 12 is disposed on one side of the substrate 11, the pixel electrode layer 13 is disposed on one side of the driving circuit layer 12 away from the substrate 11, the light emitting function layer 14 is disposed on one side of the pixel electrode layer 13 away from the driving circuit layer 12, the common electrode layer 15 is disposed on one side of the light emitting function layer 14 away from the pixel electrode layer 13, wherein the OLED display panel comprises a first display region 161 and a second display region 162, the second display region 162 comprises a light transmission region 162a and a light emitting region 162b corresponding to the arrangement position of electronic components, the substrate 11 is formed with a through hole 114 in the light transmission region 162a, the OLED display panel further comprises a cathode inhibiting layer 17 disposed in the light transmission region 162a, the cathode inhibiting layer 17 is disposed on one side of the light emitting function layer 14 away from the pixel electrode layer 13, the light transmittance of the cathode inhibition layer 17 is greater than that of the common electrode layer 15, and the thickness L1 of the common electrode layer 15 in the light emitting region 162b is greater than the thickness L2 of the common electrode layer 15 in the light transmitting region 162 a;
the electronic element 31 is disposed on one side of the OLED display panel, and the electronic element 31 is disposed in the light-transmitting region 162 a.
The embodiment of the application provides an OLED display device, this OLED display device includes OLED display panel and electronic component, this OLED display panel is through making the substrate form the via hole in the printing opacity district, improve the transmissivity of light in the printing opacity district, and through setting up the negative pole suppression layer, the luminousness that makes the negative pole suppression layer is greater than the luminousness of public electrode layer, reduce the thickness of the public electrode layer in printing opacity district, make the light that public electrode layer blockked less can not block light even, further improve the light transmissivity in printing opacity district.
According to the above embodiments:
the embodiment of the application provides an OLED display panel and an OLED display device; the OLED display panel comprises a substrate, a driving circuit layer, a pixel electrode layer, a light-emitting functional layer and a common electrode layer, wherein the driving circuit layer is arranged on one side of the substrate, the pixel electrode layer is arranged on one side of the driving circuit layer away from the substrate, the light-emitting functional layer is arranged on one side of the pixel electrode layer away from the driving circuit layer, the common electrode layer is arranged on one side of the light-emitting functional layer away from the pixel electrode layer, wherein, the OLED display panel comprises a first display area and a second display area, the second display area comprises a light-transmitting area and a light-emitting area corresponding to the arrangement position of the electronic element, the substrate is provided with a via hole in the light-transmitting area, the OLED display panel also comprises a cathode inhibiting layer arranged in the light-transmitting area, the cathode inhibiting layer is arranged on one side of the light-emitting function layer far away from the pixel electrode layer, the light transmittance of the cathode inhibiting layer is greater than that of the common electrode layer, and the thickness of the common electrode layer in the light emitting area is greater than that in the light transmitting area. This application improves the transmissivity of light at the printing opacity district through making the substrate form the via hole in the printing opacity district to through setting up the negative pole suppression layer, make the luminousness on negative pole suppression layer be greater than the luminousness of public electrode layer, reduce the thickness of the public electrode layer in printing opacity district, make the light that public electrode layer blockked less can not block light even, further improve the light transmissivity in printing opacity district.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
The OLED display panel and the OLED display device provided in the embodiments of the present application are described in detail above, and specific examples are applied herein to explain the principles and embodiments of the present application, and the description of the embodiments above is only used to help understand the technical solutions and core ideas of the present application; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure as defined by the appended claims.
Claims (10)
1. An OLED display panel, comprising:
a substrate;
the driving circuit layer is arranged on one side of the substrate;
the pixel electrode layer is arranged on one side, far away from the substrate, of the driving circuit layer;
the light-emitting functional layer is arranged on one side, far away from the driving circuit layer, of the pixel electrode layer;
the public electrode layer is arranged on one side, far away from the pixel electrode layer, of the light-emitting functional layer;
the OLED display panel comprises a first display area and a second display area, the second display area comprises a light-transmitting area and a light-emitting area, the light-transmitting area corresponds to the position where an electronic element is arranged, a through hole is formed in the light-transmitting area, the OLED display panel further comprises a cathode inhibition layer arranged in the light-transmitting area, the cathode inhibition layer is arranged on one side, away from the pixel electrode layer, of the light-emitting function layer, the light transmittance of the cathode inhibition layer is larger than that of the common electrode layer, and the thickness of the common electrode layer located in the light-emitting area is larger than that of the common electrode layer located in the light-transmitting area.
2. The OLED display panel of claim 1, wherein the light emitting functional layer includes a hole layer, an electron layer, and a light emitting layer disposed between the hole layer and the electron layer, and an adhesive force of the electron layer to the common electrode layer is greater than an adhesive force of the common electrode layer to a cathode inhibiting layer.
3. The OLED display panel of claim 1, wherein the light-emitting functional layer includes a pixel defining layer defining a pixel region, the cathode inhibiting layer being spaced apart from the pixel region.
4. The OLED display panel of claim 1, wherein the cathode inhibiting layer is disposed in correspondence with the via hole of the substrate, and a width of a projection of the cathode inhibiting layer on the substrate is smaller than a width of the via hole of the substrate.
5. The OLED display panel of claim 4, wherein the cross-sectional shape of the via includes a trapezoid, a width of a side of the via proximate the driver circuit layer being greater than a width of a side of the via distal the driver circuit layer.
6. The OLED display panel of claim 1, wherein the substrate includes a first flexible layer, a second flexible layer, and a barrier layer disposed between the first flexible layer and the second flexible layer, the first flexible layer disposed on a side of the barrier layer away from the second flexible layer, the first flexible layer formed with a via.
7. The OLED display panel of claim 6, wherein the via hole has a fill material disposed therein, the fill material having a light transmittance greater than a light transmittance of the substrate.
8. The OLED display panel claimed in claim 1, wherein the common electrode layer is formed with a through hole, and the cathode inhibiting layer is disposed corresponding to the through hole.
9. The OLED display panel of claim 8, wherein the cathode suppression layer has a thickness less than or equal to a thickness of the common electrode layer.
10. An OLED display device, comprising:
the OLED display panel comprises a substrate, a driving circuit layer, a pixel electrode layer, a light-emitting functional layer and a common electrode layer, wherein the driving circuit layer is arranged on one side of the substrate, the pixel electrode layer is arranged on one side, away from the substrate, of the driving circuit layer, the light-emitting functional layer is arranged on one side, away from the driving circuit layer, of the pixel electrode layer, the common electrode layer is arranged on one side, away from the pixel electrode layer, of the light-emitting functional layer, the OLED display panel comprises a first display area and a second display area, the second display area comprises a light-transmitting area and a light-emitting area, the positions of the light-transmitting area correspond to the positions of electronic elements, a through hole is formed in the light-transmitting area of the substrate, the OLED display panel further comprises a cathode inhibition layer arranged in the light-transmitting area, the cathode inhibition layer is arranged on one side, away from the pixel electrode layer, of the light transmittance of the cathode inhibition layer is larger than that of the common electrode layer, the thickness of the common electrode layer positioned in the light emitting area is larger than that of the common electrode layer positioned in the light transmitting area;
and the electronic element is arranged on one side of the OLED display panel and arranged in the light-transmitting area.
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