CN107819018B - Electroluminescent display panel and display device - Google Patents
Electroluminescent display panel and display device Download PDFInfo
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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
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/121—Active-matrix OLED [AMOLED] displays characterised by the geometry or disposition of pixel elements
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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
- H10K59/60—OLEDs integrated with inorganic light-sensitive elements, e.g. with inorganic solar cells or inorganic photodiodes
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/60—OLEDs integrated with inorganic light-sensitive elements, e.g. with inorganic solar cells or inorganic photodiodes
- H10K59/65—OLEDs integrated with inorganic image sensors
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Abstract
The invention discloses an electroluminescent display panel and a display device.A second light-emitting unit in a light-sensitive identification pixel unit is a transparent light-emitting unit by setting a light-sensitive fingerprint identification area, so that when fingerprint identification is carried out according to optics, the light-sensitive fingerprint identification area can effectively realize fingerprint detection; and because the light sensation fingerprint identification area comprises the display sub-pixel units and the light sensation identification pixel units, the light sensation fingerprint identification area can also realize the display function, thereby effectively reducing the occupied area of the non-display area and being beneficial to realizing the design of a narrow frame.
Description
Technical Field
The present invention relates to the field of display technologies, and in particular, to an electroluminescent display panel and a display device.
Background
An Organic Light Emitting Diode (OLED) display is a self-luminous display, has the characteristics of lightness, thinness, high chromaticity, wide viewing angle, high response speed and the like, and has a great development prospect in the technical field of display. In order to provide the display with the fingerprint recognition function, as shown in fig. 1, a fingerprint recognition area is generally provided in a non-display area 2 of a display panel 1, and a fingerprint recognition structure 3 is generally provided in the fingerprint recognition area; however, in the structure shown in fig. 1, since the fingerprint identification structure 3 is disposed on the non-outgoing side of the display panel 1, the thickness of the display panel 1 is significantly increased, which is not favorable for the thin design of the display panel 1 and the design of the narrow frame; therefore, how to reduce the thickness of the display panel and realize the thin design and narrow frame design of the display panel while realizing fingerprint identification becomes a technical problem to be solved urgently by technical personnel in the field.
Disclosure of Invention
The embodiment of the invention provides an electroluminescent display panel and a display device, which are used for solving the problems that how to realize fingerprint identification, reduce the thickness of the display panel and realize the thin design and narrow frame design of the display panel in the prior art.
An embodiment of the present invention provides an electroluminescent display panel, including: a display area and a light sensation fingerprint identification area; wherein the content of the first and second substances,
the display area includes: a display sub-pixel unit; the display sub-pixel unit includes: a first pixel control circuit and a first light emitting unit; the first light emitting unit includes at least one reflective electrode;
the light sensation fingerprint identification area comprises: the display sub-pixel unit and the light sensation identification pixel unit; the light sensation identification pixel unit comprises a second light emitting unit; the second light emitting unit is a transparent light emitting unit.
On the other hand, an embodiment of the present invention further provides a display device, including: the electroluminescent display panel provided by the embodiment of the invention.
The invention has the following beneficial effects:
an embodiment of the present invention provides an electroluminescent display panel and a display device, including: a display area and a light sensation fingerprint identification area; wherein the display area includes: a display sub-pixel unit; the display sub-pixel unit includes: a first pixel control circuit and a first light emitting unit; the first light emitting unit includes at least one reflective electrode; the light sensation fingerprint identification area comprises: the display sub-pixel unit and the light sensation identification pixel unit; the light sensing identification pixel unit comprises a second light emitting unit; the second light emitting unit is a transparent light emitting unit. Based on this, because the second light-emitting unit is a transparent light-emitting unit, when fingerprint identification is carried out according to optics, the light-sensitive fingerprint identification area can effectively realize fingerprint detection; and, through setting up the light sense fingerprint identification region, make the light sense fingerprint identification region including showing sub-pixel unit and light sense identification pixel unit, and then make the function that the light sense fingerprint identification region can realize showing equally, thereby effectively reduced the area occupied in non-display area, be favorable to realizing the design of narrow frame.
Drawings
FIG. 1 is a schematic diagram of a display panel in the prior art;
FIG. 2 is an equivalent circuit diagram of a prior art fingerprint identification structure;
FIG. 3 is a schematic diagram of an electroluminescent display panel according to the prior art;
fig. 4 to 7 are top views of electroluminescent display panels provided in embodiments of the present invention;
fig. 8 to 10 are sectional views taken along the dotted line X-X' in fig. 4, respectively;
fig. 11 is a schematic structural diagram of a display device provided in an embodiment of the present invention.
Detailed Description
The following description will be made in detail with reference to the accompanying drawings for describing an embodiment of an electroluminescent display panel and a display device according to the present invention. It should be noted that the described embodiments are only a part of the embodiments of the present invention, 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 invention.
The inventors have found in their research that, in the structure shown in fig. 1, which only shows one fingerprint identification structure, the fingerprint identification structure 3 may include: a thin film transistor, a capacitor, a heterojunction structure and a light source 4, wherein 5 denotes a structure having the thin film transistor, the capacitor and the heterojunction structure, 1 denotes a display panel, 6 denotes a finger, and the light source 4 is generally disposed at an edge position of the fingerprint recognition structure 3 as shown in fig. 1 so that light emitted from the light source 4 is irradiated to the surface of the finger 6; further, an equivalent circuit of the fingerprint identification structure 3 is shown in fig. 2, where C denotes a capacitor, PIN denotes a heterojunction structure, and T denotes a thin film transistor; the working principle of the fingerprint identification structure 3 is specifically as follows: when light emitted by the light source 4 penetrates through a gap in the structure 5 with the thin film transistor, the capacitor and the heterojunction structure and penetrates through the display panel 1 to be incident on the surface of the finger 6, the incident light is reflected to the heterojunction structure PIN through reflection of the surface of the finger 6, and the heterojunction structure PIN generates leakage current under the action of reflected light, so that the voltage at the end a of the capacitor C is influenced to fluctuate, and the capacitor C generates voltage drop; therefore, when having a plurality of fingerprint identification structures that are the array and arrange to exist, because the fingerprint on 6 surfaces of finger makes 6 surface unevenness, and then makes the light and shade of reflection light different to make the inside leakage current size that produces of different heterojunction structure PIN different, finally arouse corresponding electric capacity C's pressure drop different, thereby can distinguish out the millet spine signal, finally realize the discernment of fingerprint.
When the fingerprint identification structure is combined with the OLED display panel, the light emitted by the OLED display panel can be used as a light source to realize the identification and detection of fingerprints; moreover, the fingerprint identification structure can be arranged inside the display panel and can also be externally hung, namely arranged on the non-outgoing side of the display panel; for example, as shown in fig. 3, when the fingerprint identification structure 3 is disposed inside the display panel, only the thin film transistor, the capacitor and the heterojunction structure may be provided, and in order not to affect the aperture ratio of the display panel, the fingerprint identification structure 3 is generally disposed at a gap position of the display sub-pixel 7, and the heterojunction structure and the capacitor in the fingerprint identification structure 3 are generally disposed at an upper position of the display sub-pixel 7, so as to effectively utilize the light emitted by the adjacent display sub-pixel 7, and when the light emitted by the display sub-pixel 7 is reflected on the surface of a finger and then irradiates the surface of the heterojunction structure, the capacitor is caused to generate a voltage drop under the action of a leakage current generated inside the heterojunction structure, thereby realizing the fingerprint identification.
However, in the structure of the display panel shown in fig. 3, in the positional relationship of the film layer, since the heterojunction structure and the capacitor in the fingerprint identification structure 3 are disposed above the display sub-pixel 7, after the display sub-pixel 7 is manufactured, an additional manufacturing process is required to manufacture the fingerprint identification structure 3, thereby increasing the manufacturing difficulty of the display panel and being not beneficial to cost saving; in addition, the heterojunction structure and the capacitor in the fingerprint identification structure 3 are arranged above the display sub-pixel 7, which inevitably increases the thickness of the display panel and is not beneficial to the thin design of the display panel; in addition, because the fingerprint identification structure 3 is arranged above the display sub-pixel 7, the fingerprint identification structure 3 shields the light obliquely above the display sub-pixel 7, thereby influencing the viewing effect of an oblique viewing angle; moreover, when the fingerprint identification structure 3 detects the light reflected by the finger, the fingerprint identification structure 3 may also receive the light emitted by the display sub-pixel 7 in an oblique direction, and the light may interfere with the fingerprint identification, thereby increasing the inaccuracy and complexity of the fingerprint identification.
Therefore, the embodiment of the present invention provides an electroluminescent display panel, so as to implement a fingerprint identification function of the display panel without increasing a manufacturing process of the display panel on the basis of adopting the fingerprint identification structure shown in fig. 1, improve accuracy of fingerprint identification, and facilitate implementation of a thin design and a narrow frame design of the display panel.
Specifically, the electroluminescent display panel according to the embodiment of the present invention is shown in the top view of fig. 4 to 7 and the cross-sectional view (shown in fig. 8 to 10) corresponding to the dotted line X-X' shown in fig. 4, wherein one side of 21 in fig. 6 is the concave-convex shape, which means that the light-sensing identification pixel unit is not completely drawn and only a part is shown, and similarly, the light-sensing identification pixel unit with the concave-convex shape in fig. 7 is not completely drawn and only a part is shown; the electroluminescent display panel may include: a display area 10 and a light-sensitive fingerprint identification area 20; wherein the content of the first and second substances,
the display area 10 includes: a display sub-pixel unit 11; the display sub-pixel unit 11 includes: a first pixel control circuit 12 and a first light emitting unit 13; the first light emitting unit 13 includes at least one reflective electrode n;
the light sensing fingerprint identification area 20 includes: a display sub-pixel unit 11 and a light sensing identification pixel unit 21; the light sensing identification pixel unit 21 includes a second light emitting unit 22; the second light emitting unit 22 is a transparent light emitting unit.
In the electroluminescent display panel provided in the embodiment of the present invention, since the second light-emitting unit 22 is a transparent light-emitting unit, when fingerprint identification is performed by using an optical fingerprint identification structure, the light-sensitive fingerprint identification area 20 can effectively implement fingerprint detection; and, through setting up light sense fingerprint identification area 20 for light sense fingerprint identification area 20 is including showing sub-pixel unit 11 and light sense identification pixel unit 21, and then makes light sense fingerprint identification area 20 can realize the function that shows equally, thereby has effectively reduced the area occupied in non-display area, is favorable to realizing display panel's narrow frame design.
In practical implementation, since the display sub-pixel unit 11 is used for displaying an image, in the above electroluminescent display panel provided in the embodiment of the present invention, as shown in fig. 8 to 10, the first light-emitting unit 13 generally includes: a first anode layer 13a, a light emitting layer 13b, and a cathode layer 13 c; further, when the electroluminescent display panel is a top emission type display panel, the first anode layer 13a is generally provided with a reflective electrode n for reflecting light emitted from the light-emitting layer 13b to increase the display luminance of the display sub-pixel 11, so the first anode layer 13a generally includes: a transparent electrode m and a reflective electrode n which are arranged in a stacked manner; in the principle of the electroluminescent display panel, electrons are injected into the light-emitting layer 13b through the cathode layer 13c, holes are injected into the light-emitting layer 13b through the anode layer 13a, and the electrons and the holes are recombined in the light-emitting layer 13b to excite the light-emitting layer 13b to emit light, so that the injection amount of the electrons and the injection amount of the holes are particularly important, and in order to increase the injection amount of the holes, and since the light-emitting layer 13b is generally an organic material, generally a transparent electrode having a large work function is selected to be in contact with the light-emitting layer 13b, that is, a transparent metal oxide such as indium tin oxide is generally selected as the transparent electrode m, and the type of the transparent metal oxide may be specifically selected according to actual needs, which. The reflective electrode n is generally made of a metal material, and functions of reflecting light while realizing charge transfer.
In addition, in order to realize the light emission of the display sub-pixel 11, the first pixel control circuit 12 and the first anode layer 13a need to be electrically connected, as shown in fig. 8 to 10, the first pixel control circuit 12 and the first anode layer 13a are electrically connected through a via hole (as shown by a solid coil), and the light emission condition of the first light emitting unit 13 is controlled by the first pixel control circuit 12, which is beneficial to controlling the image displayed by the electroluminescent display panel and improving the display quality of the display screen.
In practical implementation, in order to ensure that the second light emitting unit 22 is a transparent light emitting unit, the fingerprint identification function of the light-sensitive fingerprint identification area 20 is implemented, and therefore, in the above electroluminescent display panel provided in the embodiment of the present invention, the structure of the second light emitting unit 22 may have the following two types:
in the first structure of the second light emitting unit 22, as shown in fig. 10, the second light emitting unit 22 may include: a second anode layer 22a, a light emitting layer 13b, and a cathode layer 13 c; and the second anode layer 22a includes only transparent electrodes; the transparent electrode in the second anode layer 22a may be made of the same material and in the same layer as the transparent electrode m in the first anode layer 13 a; since the entire surface of the cathode layer covers the surface of the electroluminescent display panel when the electroluminescent display panel is manufactured, the cathode layer in the first light-emitting cell 13 and the cathode layer in the second light-emitting cell 22 are both denoted by 13 c; moreover, each light emitting layer can emit white light, and then a color film layer is formed on the surface of each light emitting unit to enable different light emitting units to display different colors, so that images can be displayed, and the light emitting layer in the first light emitting unit 13 or the light emitting layer in the second light emitting unit 22 is denoted by 13 b; in addition, as shown in fig. 10, only the transparent electrode is fabricated and the reflective electrode is not fabricated when the second anode layer 22a is fabricated, so that the second light emitting unit 22 can be effectively ensured to be a transparent light emitting unit, the fingerprint identification function is realized, and the fabrication difficulty of the electroluminescent display panel is reduced, and the fabrication cost is reduced.
In order to further reduce the manufacturing difficulty of the electroluminescent display panel, as shown in fig. 8 and 9, the second light-emitting unit 22 only includes the light-emitting layer 13b and the cathode layer 13c, that is, does not include the second anode layer 22a, so that the second light-emitting unit 22 can be effectively ensured to be a transparent light-emitting unit, and the manufacturing steps of the electroluminescent display panel can be effectively reduced, the manufacturing difficulty is reduced, and the manufacturing cost is reduced.
In specific implementation, in order to ensure that the light reflected from the surface of the finger can pass through the second light-emitting unit 22, so that the reflected light is incident on the surface of the fingerprint identification structure to realize the fingerprint identification function, the light transmittance of the second light-emitting unit 22 needs to be limited according to the set size of the fingerprint identification structure; therefore, in the above-mentioned electroluminescent display panel provided by the embodiment of the present invention, the light sensing identification pixel unit 21 has a first orthographic projection to the electroluminescent display panel; the display sub-pixel cell 11 has a second orthographic projection to the electroluminescent display panel; the area of the first orthographic projection is the same as that of the second orthographic projection, that is, the area of one light-sensing identification pixel unit 21 is the same as that of one display sub-pixel unit 11, as shown in fig. 4 and 5, so that the second light-emitting unit 22 needs to have higher light transmittance, and the light transmittance of the second light-emitting unit 22 is generally set to be not less than 49%; when the area of the first orthogonal projection is at least twice as large as the area of the second orthogonal projection, that is, the area of one light-sensing identification pixel unit 21 is at least 2 times as large as the area of one display sub-pixel unit 11, as shown in fig. 6 and 7, the light transmittance of the second light-emitting unit 22 can be properly reduced because the area of the light-sensing identification pixel unit 21 is increased, and the light transmittance of the second light-emitting unit 22 is generally set to be not less than 12%; of course, the area of the first orthographic projection may be 2 times (as shown in fig. 6), 3 times (as shown in fig. 7), 4 times, or 5 times that of the second orthographic projection, and accordingly, the light transmittance of the second light-emitting unit 22 is also set according to actual needs, as long as the function of fingerprint identification can be realized, and the accuracy of fingerprint identification is ensured, which is not limited herein.
It should be noted that, since the light-sensing fingerprint identification area 20 includes the display sub-pixel units 11 and the light-sensing fingerprint identification pixel units 21, the light-sensing fingerprint identification area 20 can also display images, and therefore, in order to ensure that the area can not only realize the fingerprint identification function, but also realize the display area, which is beneficial to realizing the design of a narrow frame, the display sub-pixel units 11 and the light-sensing fingerprint identification pixel units 21 are generally arranged at intervals in the row direction and are arranged in a staggered manner as much as possible in the column direction; based on this, in the above electroluminescent display panel provided by the embodiment of the present invention, as shown in fig. 4 to 7, at least one display sub-pixel unit 11 is spaced between two adjacent light sensing identification pixel units 21 in the row direction; as shown in fig. 4, 6 and 7, two light-sensing identification pixel units 21 adjacent to each other in the row direction are separated by one display sub-pixel unit 11; or as shown in fig. 6, two display sub-pixel units 11 are spaced between two adjacent light-sensing identification pixel units 21 in the row direction; still alternatively, as shown in fig. 5, three display sub-pixel units 11 are spaced between two adjacent light-sensing identification pixel units 21 in the row direction; so as to ensure that the light-sensing fingerprint identification area 20 can normally display images.
Further, in order to ensure that the area can display images with high quality, it is preferable that the colors of the light emitted by two display sub-pixels 11 adjacent to each other in the row direction are different as shown in fig. 4, 5 and 7, so as to improve the quality of the displayed images of the light-sensitive fingerprint identification area 20; furthermore, more preferably, in the above-mentioned electroluminescent display panel according to the embodiment of the present invention, as shown in fig. 4, when the area of the first orthogonal projection is the same as the area of the second orthogonal projection, one display sub-pixel unit 11 is spaced between two adjacent light-sensing identification pixel units 21 in the row direction, and one display sub-pixel unit 11 is also spaced between two adjacent light-sensing identification pixel units 21 in the column direction, so as to effectively ensure that the light-sensing fingerprint identification area realizes the fingerprint identification function, and at the same time, can display an image with high quality, and is favorable for realizing the design of the narrow frame of the electroluminescent display panel.
In practical implementation, in the above-mentioned electroluminescent display panel provided in the embodiment of the present invention, the light-sensitive fingerprint identification area 20 is generally disposed at an edge position of the electroluminescent display panel, and is generally a position of the electroluminescent display panel close to the lower frame, as shown in fig. 4 to 7, but not limited thereto, as long as it is ensured that a user can conveniently control the display by inputting a fingerprint from the light-sensitive fingerprint identification area 20, and the present invention is not limited thereto.
In specific implementation, in order to realize the fingerprint identification function of the light sensing fingerprint identification area 20, in the electroluminescent display panel provided in the embodiment of the present invention, the area where the light sensing identification pixel unit 21 is located is generally provided with a fingerprint identification structure 23; also, as shown in fig. 10, the fingerprint recognition structure 23 may include: a heterojunction structure 23a, a first thin film transistor 23b, and a first capacitor 23 c; and the heterojunction structure 23a may include: a first electrode p, a heterojunction q and a second electrode h; the first electrode p is electrically connected to the first end of the first capacitor 23c, that is, the first electrode p is electrically connected to the first end of the first capacitor 23c through the via hole; the second electrode h is electrically connected to the second end of the first capacitor 23c and the drain d of the first thin film transistor 23b, so as to directly affect the voltage difference between the two ends of the first capacitor 23c when the heterojunction structure 23a generates a leakage current, thereby implementing the function of fingerprint identification.
Specifically, in order to reduce the manufacturing difficulty and reduce the manufacturing process, in the electroluminescent display panel provided in the embodiment of the present invention, as shown in fig. 10, the second electrode h may be reused as the second end of the first capacitor 23c, that is, the second end of the first capacitor 23c and the second electrode h are integrated into a whole structure, and may be used as the second electrode h of the heterojunction structure 23a, or may be used as the second end of the first capacitor 23 c; therefore, the manufacturing difficulty of the display panel can be effectively reduced, and the manufacturing cost is reduced.
In practical implementation, in the above electroluminescent display panel provided in the embodiment of the present invention, there may be two types of locations where the fingerprint identification structure 23 is disposed:
in the first arrangement position, the fingerprint identification structure 23 is disposed on one side of the non-light-emitting surface of the electroluminescent display panel, i.e. in an external hanging manner, as shown in fig. 8 and 9; moreover, since the fingerprint identification structure 23 is disposed outside the electroluminescent display panel and the fingerprint identification structure 23 is located in the area where the light sensing identification pixel unit is located, light reflected from the surface of a finger needs to pass through the light sensing identification pixel unit to be incident on the surface of the heterojunction structure, and therefore the aperture opening ratio of the light sensing identification pixel unit is not less than 20% to ensure the realization of the fingerprint identification function; of course, the aperture ratio of the light sensing identification pixel unit is related to whether the fingerprint identification structure 23 can effectively identify the fingerprint, so the aperture ratio of the light sensing identification pixel unit is not limited to 20%, and may be set accordingly according to actual needs, and is not limited herein.
In addition, when the area of the light sensing identification pixel unit is at least 2 times of the area of the display sub-pixel unit, it is indicated that the area of the first orthographic projection corresponding to the light sensing identification pixel unit is relatively large, so that the middle position of the area where the light sensing identification pixel unit is located may be far away from the adjacent display sub-pixel unit, so that the reflected light received by the middle position is less, and the accuracy of fingerprint identification is affected; in this case, therefore, the electroluminescent display panel may further include: a backlight source (not shown) provided corresponding to the region where the light sensing identification pixel unit is located; the backlight sets up in the one side that the fingerprint identification structure deviates from electroluminescent display panel, and the backlight is used for providing light for the fingerprint identification structure to increase fingerprint identification's accuracy.
In the second arrangement position, the fingerprint identification structure 23 is disposed inside the electroluminescent display panel, that is, the fingerprint identification structure 23 is disposed inside the light sensing identification pixel unit, that is, an embedded structure, as shown in fig. 10; compared with the first arrangement position, the electroluminescent display panel with the structure can effectively reduce the thickness of the electroluminescent display panel and is beneficial to the thin design. In addition, in this case, the area of the first orthogonal projection corresponding to the light sensing identification pixel unit is generally the same as the area of the second orthogonal projection corresponding to the display sub-pixel unit 11, so that the light provided by the adjacent display sub-pixel units 11 is enough to satisfy the requirement of the fingerprint identification structure 23 in the light sensing identification pixel unit to realize the fingerprint identification function, and further, the backlight source is not required to be arranged at the arrangement position, so that the thickness of the electroluminescent display panel can be greatly and effectively reduced.
It should be noted that, no matter which setting position is used, since the light-sensing fingerprint identification area includes the display sub-pixel unit 11 and the light-sensing identification pixel unit, and the display sub-pixel unit 11 includes the first pixel control circuit 12, in the electroluminescent display panel provided in the embodiment of the present invention, as shown in fig. 8, the light-sensing identification pixel unit may be provided with the second pixel control circuit 24, so that when the second pixel control circuit 24 is manufactured, a mask is not required to be redesigned, and the mask for manufacturing the first pixel control circuit 12 may be used for manufacturing, thereby effectively reducing the manufacturing difficulty; however, in order to further reduce the difficulty of the manufacturing process, it is needless to say that the second pixel control circuit 24 (as shown in fig. 9 and fig. 10) is not provided, so that the light sensing identification pixel unit only includes the second light emitting unit 22, at this time, when the light emitting layer 13b and the cathode layer 13c in the second light emitting unit 22 are manufactured, it is not necessary to re-manufacture a mask, a mask for manufacturing the light emitting layer 13b and the cathode layer 13c in the first light emitting unit 13 may be adopted, and when the second light emitting unit 22 includes the second anode layer 22a, only the mask of the second anode layer 22a needs to be re-designed, so that the manufacturing difficulty and the development cost are reduced.
However, when the light sensing identification pixel unit includes the second pixel control circuit 24, it is necessary to insulate the second pixel control circuit 24 and the second light emitting unit 22 from each other, as shown in fig. 8, for the following reasons: since the fingerprint identification structure 23 of the present invention optically implements the fingerprint identification function, on the basis of ensuring the aperture ratio of the light sensing identification pixel unit, it is preferable that the light sensing identification pixel unit has no display function, i.e. the light sensing identification pixel unit is a non-display pixel unit, so as to avoid the light emission of the light sensing identification pixel unit from adversely affecting the fingerprint identification, thereby affecting the accuracy of the fingerprint identification, and therefore, the second pixel control circuit 24 and the second light emitting unit 22 are preferably disposed in an insulated manner.
Optionally, in a first arrangement position, in the above-mentioned electroluminescent display panel provided in the embodiment of the present invention, as shown in fig. 8, since the fingerprint identification structure 23 is disposed on a side of the non-light-emitting surface of the electroluminescent display panel, the light sensing identification pixel unit may further include: a second pixel control circuit 24 provided insulated from the second light emitting unit 22; moreover, in order to ensure that the light reflected from the surface of the finger can irradiate the surface of the fingerprint identification structure 23, the second pixel control circuit 24 only includes the third thin film transistor, so that the second pixel control circuit 24 does not include the third capacitor, because the third capacitor is generally formed by two opaque metal plates with large areas, when the third capacitor is not provided, the light transmittance of the light sensing identification pixel unit can be effectively increased, that is, the aperture opening ratio of the light sensing identification pixel unit is ensured, so as to ensure the realization of the fingerprint identification function, and because the third capacitor does not need to be manufactured, the manufacturing process difficulty can be effectively reduced, and the manufacturing cost is saved.
Certainly, in order to further increase the aperture ratio of the light sensing identification pixel unit, ensure the implementation of the fingerprint identification function, and reduce the manufacturing difficulty of the electroluminescent display panel, as shown in fig. 9, a second pixel control circuit 24 is not arranged in the light sensing identification pixel unit, that is, the light sensing identification pixel unit only includes the second light emitting unit 22, so as to reduce the manufacturing difficulty and save the manufacturing cost while implementing the fingerprint identification function.
Alternatively, in the above-mentioned electroluminescent display panel according to the embodiment of the present invention, as shown in fig. 10, since the fingerprint identification structure 23 is disposed inside the electroluminescent display panel, and according to the configuration of the fingerprint identification structure 23, the configuration of the display sub-pixel unit 11, and the configuration of the light sensing identification pixel unit, each component in the fingerprint identification structure 23 may be specially disposed, so as to facilitate reducing the manufacturing difficulty of the electroluminescent display panel and facilitating the design of implementing the thinning of the electroluminescent display panel.
Specifically, when the first light emitting unit 13 includes the first anode layer 13a, the first anode layer 13a includes the transparent electrode m and the reflective electrode n that are stacked, and the second light emitting unit 22 includes the second anode layer 22a, and the second anode layer 22a includes only the transparent electrode, in the above-mentioned electroluminescent display panel provided in the embodiment of the present invention, the first electrode p may be made of the same material as the transparent electrode m in the first anode layer 13a and disposed in the same layer; or, the second anode layer 22a may be reused as the first electrode p (as shown in fig. 10), so that the first electrode p may be obtained when the transparent electrode m in the first anode layer 13a is fabricated or the second anode layer 22a is fabricated, which not only can effectively reduce the fabrication difficulty of the electroluminescent display panel, but also is beneficial to reducing the thickness of the electroluminescent display panel.
Specifically, when only the second light emitting unit 22 is included in the light sensing identification pixel unit, and the second pixel control circuit is not included, in the above electroluminescent display panel provided by the embodiment of the present invention, the first pixel control circuit 12 may include: a second thin film transistor 12a and a second capacitor 12 b; therefore, the first thin film transistor 23b and the second thin film transistor 12a can be made of the same material and disposed in the same layer; the first capacitor 23c and the second capacitor 12b can be made of the same material and arranged in the same layer, so that the first thin film transistor 23b can be obtained when the second thin film transistor 12a is manufactured, and the first capacitor 23c can be obtained when the second capacitor 12b is manufactured, so that the manufacturing difficulty of the electroluminescent display panel can be effectively reduced, and the thickness of the electroluminescent display panel can be favorably reduced.
Of course, when the light sensing identification pixel unit includes not only the second light emitting unit 22 but also the second pixel control circuit 24 insulated from the second light emitting unit 22, in the above-mentioned electroluminescent display panel provided in the embodiment of the present invention, the second pixel control circuit 24 may include: a third thin film transistor and a third capacitor; the third thin film transistor may be multiplexed as the first thin film transistor 23b, and the third capacitor may be multiplexed as the first capacitor 23 c; therefore, the first thin film transistor 23b and the first capacitor 23c do not need to be additionally manufactured, and only the third thin film transistor and the third capacitor in the second pixel control circuit need to be utilized, so that the manufacturing process of the electroluminescent display panel can be effectively reduced, and the thickness of the electroluminescent display panel can be favorably reduced.
It should be noted that the first thin film transistor, the second thin film transistor, and the third thin film transistor described above may all be top gate thin film transistors (as shown in fig. 8 to 10), and may of course all be bottom gate thin film transistors (not shown), but may be top gate thin film transistors or bottom gate thin film transistors, as long as the difficulty in manufacturing the electroluminescent display panel can be reduced, and the narrow frame design and the thin design of the electroluminescent display panel can be advantageously implemented, which is not limited herein.
Based on the same inventive concept, an embodiment of the present invention further provides a display device, as shown in fig. 11, which may include: in the electroluminescent display panel 100 according to the embodiment of the present invention, 20 denotes a fingerprint identification area in the electroluminescent display panel 100. The display device may be: any product or component with a display function, such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator and the like. The implementation of the display device can be seen in the above-mentioned embodiment of the electroluminescent display panel, and repeated descriptions are omitted.
The embodiment of the invention provides an electroluminescent display panel and a display device, comprising: a display area and a light sensation fingerprint identification area; wherein the display area includes: a display sub-pixel unit; the display sub-pixel unit includes: a first pixel control circuit and a first light emitting unit; the first light emitting unit includes at least one reflective electrode; the light sensation fingerprint identification area comprises: the display sub-pixel unit and the light sensation identification pixel unit; the light sensing identification pixel unit comprises a second light emitting unit; the second light emitting unit is a transparent light emitting unit. Based on this, because the second light-emitting unit is a transparent light-emitting unit, when fingerprint identification is carried out according to optics, the light-sensitive fingerprint identification area can effectively realize fingerprint detection; and, through setting up the light sense fingerprint identification region, make the light sense fingerprint identification region including showing sub-pixel unit and light sense identification pixel unit, and then make the function that the light sense fingerprint identification region can realize showing equally, thereby effectively reduced the area occupied in non-display area, be favorable to realizing the design of narrow frame.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (18)
1. An electroluminescent display panel comprising: a display area and a light sensation fingerprint identification area; wherein the content of the first and second substances,
the display area includes: a display sub-pixel unit; the display sub-pixel unit includes: a first pixel control circuit and a first light emitting unit; the first light emitting unit includes at least one reflective electrode;
the light sensation fingerprint identification area comprises: the display sub-pixel unit and the light sensation identification pixel unit; the light sensation identification pixel unit comprises a second light emitting unit and a fingerprint identification structure, the second light emitting unit and the fingerprint identification structure are overlapped in a positive projection mode on the light emitting surface of the electroluminescent display panel, and the second light emitting unit is a transparent light emitting unit.
2. The electroluminescent display panel of claim 1, wherein the first light emitting unit comprises: a first anode layer, a light emitting layer and a cathode layer;
the first anode layer includes: a transparent electrode and a reflective electrode which are arranged in a stacked manner;
the first pixel control circuit is electrically connected to the first anode layer.
3. The electroluminescent display panel of claim 1, wherein the second light emitting cell comprises only a light emitting layer and a cathode layer.
4. The electroluminescent display panel of claim 1, wherein the second light emitting unit comprises: a second anode layer, a light emitting layer and a cathode layer;
the second anode layer includes only transparent electrodes.
5. The electroluminescent display panel of claim 1, wherein the light sensing identification pixel cells have a first orthographic projection to the electroluminescent display panel; the display sub-pixel unit has a second orthographic projection to the electroluminescent display panel;
the area of the first orthographic projection is the same as the area of the second orthographic projection; the light transmittance of the second light-emitting unit is not less than 49%; or the like, or, alternatively,
the area of the first orthographic projection is at least twice the area of the second orthographic projection; the light transmittance of the second light emitting unit is not less than 12%.
6. The electroluminescent display panel of claim 5, wherein at least one of the display sub-pixel cells is spaced between two of the light-sensing identification pixel cells adjacent in the row direction.
7. The electroluminescent display panel of claim 6, wherein the area of the first orthographic projection is the same as the area of the second orthographic projection;
and one display sub-pixel unit is arranged between two adjacent light sensing identification pixel units in the row direction at intervals.
8. The electroluminescent display panel of claim 1, wherein the light sensing fingerprint identification area is disposed at an edge of the electroluminescent display panel.
9. The electroluminescent display panel of any of claims 1-8, wherein the fingerprint identification structure comprises: the semiconductor device comprises a heterojunction structure, a first thin film transistor and a first capacitor; and the heterojunction structure comprises: a first electrode, a heterojunction, and a second electrode;
the first electrode is electrically connected with a first end of the first capacitor;
the second electrode is electrically connected with the second end of the first capacitor and the drain electrode of the first thin film transistor respectively.
10. The electroluminescent display panel of claim 9, wherein the second electrode is multiplexed as a second terminal of the first capacitor.
11. The electroluminescent display panel of claim 10, wherein the fingerprint identification structure is disposed within the light sensing identification pixel cells.
12. The electroluminescent display panel of claim 11, wherein the first light emitting unit comprises: a first anode layer, the second light emitting cell comprising: a second anode layer;
the first electrode and the transparent electrode in the first anode layer are made of the same material and are arranged in the same layer; or the like, or, alternatively,
the second anode layer is multiplexed as the first electrode.
13. The electroluminescent display panel of claim 11, wherein the first pixel control circuit comprises: a second thin film transistor and a second capacitor;
the first thin film transistor and the second thin film transistor are made of the same material and are arranged in the same layer;
the first capacitor and the second capacitor are made of the same material and are arranged on the same layer.
14. The electroluminescent display panel of claim 11, wherein the light sensing identification pixel cell further comprises: a second pixel control circuit arranged to be insulated from the second light emitting unit;
the second pixel control circuit includes: a third thin film transistor and a third capacitor;
the third thin film transistor is multiplexed as the first thin film transistor;
the third capacitance is multiplexed as the first capacitance.
15. The electroluminescent display panel of claim 10, wherein the fingerprint identification structure is disposed on a side of a non-light-emitting surface of the electroluminescent display panel;
the aperture opening ratio of the light sensing identification pixel unit is not less than 20%.
16. The electroluminescent display panel of claim 15, wherein the light sensing identification pixel cell further comprises: a second pixel control circuit arranged to be insulated from the second light emitting unit;
the second pixel control circuit includes only a third thin film transistor.
17. The electroluminescent display panel of claim 15, wherein the light sensing identification pixel cell has a first orthographic projection to the electroluminescent display panel; the display sub-pixel unit has a second orthographic projection to the electroluminescent display panel;
the area of the first orthographic projection is at least twice the area of the second orthographic projection;
the electroluminescent display panel further comprises: the backlight source is arranged corresponding to the area where the light sensing identification pixel unit is located;
the backlight source is arranged on one side of the fingerprint identification structure, which is deviated from the electroluminescent display panel.
18. A display device, comprising: an electroluminescent display panel as claimed in any one of claims 1 to 17.
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Families Citing this family (45)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110634908A (en) * | 2018-06-21 | 2019-12-31 | 上海自旭光电科技有限公司 | Pixel structure of organic light emitting diode display |
| CN108511496B (en) * | 2018-03-30 | 2020-10-09 | 上海天马有机发光显示技术有限公司 | Organic light-emitting display panel and organic light-emitting display device |
| CN110349528B (en) * | 2018-04-03 | 2021-04-13 | 京东方科技集团股份有限公司 | Pixel array, driving method thereof and display device |
| CN108649049B (en) * | 2018-04-19 | 2020-08-04 | 厦门天马微电子有限公司 | Display panel and display device |
| CN108596083B (en) * | 2018-04-23 | 2021-03-02 | 上海天马有机发光显示技术有限公司 | Display panel and display device |
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| CN108615019B (en) * | 2018-04-28 | 2020-12-29 | 上海天马有机发光显示技术有限公司 | Display panel and display device |
| CN108428729B (en) * | 2018-05-14 | 2019-12-24 | 云谷（固安）科技有限公司 | Display panel and preparation method thereof |
| CN108647669A (en) * | 2018-05-22 | 2018-10-12 | 武汉天马微电子有限公司 | Display module and preparation method thereof and display device |
| CN108735790B (en) * | 2018-05-30 | 2020-11-10 | 武汉天马微电子有限公司 | Display panel, display device and pixel driving method |
| CN108766990A (en) * | 2018-06-05 | 2018-11-06 | 武汉华星光电半导体显示技术有限公司 | Display panel |
| CN108806578B (en) * | 2018-06-08 | 2021-04-13 | 上海天马有机发光显示技术有限公司 | Display panel and display device |
| CN110660823A (en) | 2018-06-29 | 2020-01-07 | 京东方科技集团股份有限公司 | Display substrate, display method thereof, display device and high-precision metal mask plate |
| CN110619813B (en) | 2018-06-20 | 2021-05-14 | 京东方科技集团股份有限公司 | Display substrate, driving method thereof, display device and high-precision metal mask |
| US11263968B2 (en) | 2018-06-20 | 2022-03-01 | Boe Technology Group Co., Ltd. | Display substrate and driving method thereof, and display device |
| CN110620129B (en) * | 2018-06-20 | 2022-02-01 | 京东方科技集团股份有限公司 | Display substrate, driving method thereof, display device and high-precision metal mask plate |
| CN108830234B (en) * | 2018-06-21 | 2021-01-08 | 武汉天马微电子有限公司 | Display panel and display device |
| CN108878481B (en) * | 2018-06-21 | 2020-11-24 | 武汉天马微电子有限公司 | Display panel and display device |
| CN108922900B (en) * | 2018-06-28 | 2022-01-25 | 厦门天马微电子有限公司 | Display device and display method thereof |
| CN108985248B (en) * | 2018-07-26 | 2020-10-30 | 武汉天马微电子有限公司 | Display panel |
| CN108962958B (en) * | 2018-07-27 | 2020-11-03 | 武汉天马微电子有限公司 | Display panel, display device and manufacturing method of display panel |
| CN109034089B (en) * | 2018-08-07 | 2020-11-20 | 武汉天马微电子有限公司 | Display device and electronic equipment |
| CN110085645B (en) * | 2018-08-10 | 2021-05-25 | 友达光电股份有限公司 | Display device |
| CN110767106B (en) * | 2018-09-30 | 2020-09-08 | 云谷（固安）科技有限公司 | Display panel, display screen and display terminal |
| CN109285472B (en) * | 2018-11-21 | 2021-08-24 | Oppo广东移动通信有限公司 | Electronic device |
| CN109584794A (en) * | 2019-01-25 | 2019-04-05 | 京东方科技集团股份有限公司 | A kind of display panel and display device |
| CN110767833B (en) * | 2019-01-31 | 2021-02-09 | 昆山国显光电有限公司 | Transparent OLED substrate, array substrate, display screen and display device |
| CN110767712B (en) * | 2019-02-28 | 2021-01-26 | 云谷（固安）科技有限公司 | OLED array substrate, display panel and display device |
| CN109786582B (en) * | 2019-03-08 | 2024-04-19 | 京东方科技集团股份有限公司 | Mask plate, display backboard, display panel and display device |
| CN110767139B (en) * | 2019-03-29 | 2020-12-11 | 昆山国显光电有限公司 | Display substrate, display panel and display device |
| CN110061044B (en) | 2019-04-30 | 2021-04-09 | 上海天马有机发光显示技术有限公司 | Organic light emitting display panel and display device |
| CN109977932B (en) * | 2019-05-14 | 2021-04-20 | 合肥京东方光电科技有限公司 | Fingerprint identification display substrate, display panel and display device |
| CN110503911A (en) * | 2019-08-09 | 2019-11-26 | 武汉华星光电半导体显示技术有限公司 | Display panel and electronic equipment |
| CN110379356B (en) | 2019-08-29 | 2022-04-22 | 武汉天马微电子有限公司 | Display panel and display device |
| CN110767722B (en) * | 2019-09-11 | 2022-06-10 | 京东方科技集团股份有限公司 | Display substrate, manufacturing method thereof, display panel and display device |
| CN117098422A (en) * | 2019-11-07 | 2023-11-21 | 华为技术有限公司 | Display panel and electronic equipment |
| CN116229833B (en) * | 2019-11-18 | 2024-05-17 | 京东方科技集团股份有限公司 | Display panel and display device |
| CN111047996B (en) * | 2020-01-03 | 2021-12-10 | 武汉天马微电子有限公司 | Display module assembly and display device |
| CN111339984B (en) * | 2020-03-05 | 2023-10-24 | 京东方科技集团股份有限公司 | Display panel and display device |
| CN111834413A (en) * | 2020-04-17 | 2020-10-27 | 昆山国显光电有限公司 | Display panel and display device |
| CN111509010B (en) * | 2020-04-26 | 2023-08-29 | 京东方科技集团股份有限公司 | OLED display substrate and preparation method thereof |
| US20240019899A1 (en) * | 2020-12-23 | 2024-01-18 | Boe Technology Group Co., Ltd. | Display backplane and fabrication method therefor, display panel and display device |
| GB2611888A (en) | 2021-03-09 | 2023-04-19 | Boe Technology Group Co Ltd | Array substrate, display panel, display apparatus, and preparation method for array substrate |
| CN113702792B (en) * | 2021-08-12 | 2023-04-28 | 上海天马微电子有限公司 | Display panel, light sensation detection method thereof and display device |
| CN114792715A (en) * | 2022-04-08 | 2022-07-26 | 武汉华星光电技术有限公司 | Display panel |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI372277B (en) * | 2008-09-04 | 2012-09-11 | Au Optronics Corp | Display module |
| TWI575420B (en) * | 2015-11-30 | 2017-03-21 | 友達光電股份有限公司 | Display Device with Fingerprint Sensing Function and Operation Method thereof |
| CN105702176B (en) * | 2016-04-12 | 2018-06-15 | 深圳市华星光电技术有限公司 | Display panel and display device with fingerprint recognition |
| CN106156753B (en) * | 2016-07-25 | 2019-06-07 | 京东方科技集团股份有限公司 | Array substrate of fingerprint recognition and preparation method thereof, display device |
| CN106529463B (en) * | 2016-10-28 | 2019-04-23 | 京东方科技集团股份有限公司 | A kind of fingerprint recognition display panel, display device and fingerprint identification method |
| CN107065274B (en) * | 2017-06-19 | 2020-03-10 | 上海天马微电子有限公司 | Array substrate, display panel and display device |
-
2017
- 2017-10-31 CN CN201711047583.3A patent/CN107819018B/en active Active
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