CN113658534A - Display device - Google Patents
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- CN113658534A CN113658534A CN202110941264.7A CN202110941264A CN113658534A CN 113658534 A CN113658534 A CN 113658534A CN 202110941264 A CN202110941264 A CN 202110941264A CN 113658534 A CN113658534 A CN 113658534A
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- display panel
- rectifying diode
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2380/00—Specific applications
- G09G2380/04—Electronic labels
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- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The embodiment of the invention provides a display device, which comprises an induction power supply module and a display panel; the induction power supply module is used for generating a driving current under a preset condition and transmitting the driving current to the display panel; the display panel is used for displaying preset patterns under the driving of the driving current. The display device provided by the embodiment of the invention can greatly improve the anti-counterfeiting effect.
Description
Technical Field
The invention relates to the technical field of anti-counterfeiting, in particular to a display device.
Background
Currently, a common anti-counterfeit method is to print a specific pattern on the surface of an article or to fix a specific anti-counterfeit structure on the article, for example, by printing a pattern on the surface of a valuable paper, fixing a metal wire inside a paper money, fixing a three-dimensional trademark on the surface of a high-end luxury ornament, and the like. However, the anti-counterfeiting is realized by the method, and the patterns printed on the surface of the article or the fixedly arranged anti-counterfeiting structure is easy to counterfeit and has poor anti-counterfeiting effect.
Disclosure of Invention
The embodiment of the invention provides a display device.
As a first aspect of the present invention, there is provided a display device including an induction power supply module and a display panel; the induction power supply module is used for generating a driving current under a preset condition and transmitting the driving current to the display panel; the display panel is used for displaying preset patterns under the driving of the driving current.
In some embodiments, the inductive power supply module comprises an induction coil and a rectification unit, and the predetermined condition comprises the induction coil being in an electric field;
the induction coil is used for generating induction alternating current under the excitation of the electric field;
the rectifying unit is used for rectifying the induction alternating current to obtain the driving current.
In some embodiments, the rectifying unit includes a single rectifying diode, one end of the induction coil is electrically connected to an anode of the rectifying diode, the other end of the induction coil is electrically connected to a negative input terminal of the display panel, and a cathode of the rectifying diode is electrically connected to a positive input terminal of the display panel.
In some embodiments, the rectifying unit includes a plurality of rectifying diodes, which are a first rectifying diode, a second rectifying diode, a third rectifying diode, and a fourth rectifying diode, respectively;
one end of the induction coil is electrically connected with the cathode of the first rectifying diode and the anode of the second rectifying diode, the other end of the induction coil is electrically connected with the cathode of the third rectifying diode and the anode of the fourth rectifying diode, the positive input end of the display panel is electrically connected with the cathode of the second rectifying diode and the cathode of the fourth rectifying diode, and the negative input end of the display panel is electrically connected with the anode of the first rectifying diode and the anode of the third rectifying diode.
In some embodiments, the display device further includes a voltage stabilizing capacitor, a first pole of the voltage stabilizing capacitor is electrically connected to the positive input terminal of the display panel, and a second pole of the voltage stabilizing capacitor is electrically connected to the negative input terminal of the display panel.
In some embodiments, the display panel comprises a flexible organic light emitting diode display panel.
In some embodiments, the display device further includes a substrate, a PN junction of the rectifying diode is formed on the substrate, the induction coil, a cathode of the rectifying diode, and an anode of the rectifying diode are located in the same layer, and are disposed on a side of the layer where the PN junction is located, which is away from the substrate, and an orthographic projection of the induction coil on the substrate does not overlap with an orthographic projection of the cathode of the rectifying diode and an orthographic projection of the anode of the rectifying diode on the substrate; the display panel is arranged on one side, away from the substrate, of the layer where the induction coil is located.
In some embodiments, the display panel includes a light emitting element layer and a data line layer, the data line layer including a cathode data line and an anode data line, the light emitting element layer including a plurality of light emitting elements arranged in the predetermined pattern, anodes of the plurality of light emitting elements being electrically connected to the anode data line, cathodes of the plurality of light emitting elements being electrically connected to the cathode data line; the cathode data line is electrically connected with the negative input end of the display panel, and the anode data line is electrically connected with the positive input end of the display panel.
In some embodiments, the display device further includes a planarization layer disposed between the layer where the sensing power module is located and the layer where the display panel is located, the anode data line is electrically connected to the sensing power module through a first via hole penetrating through the planarization layer, and the cathode data line is electrically connected to the sensing power module through a second via hole penetrating through the planarization layer.
In some embodiments, the induction coil is formed using a copper alloy or an aluminum alloy.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.
Fig. 1 is a schematic diagram illustrating a display principle of a display device according to an embodiment of the present invention;
FIG. 2 is a first schematic diagram of a two-dimensional circuit of a display device according to an embodiment of the present invention;
fig. 3 is a first schematic diagram illustrating an input current and an output current of a rectifying unit according to an embodiment of the present invention;
FIG. 4 is a two-dimensional circuit diagram of a display device according to an embodiment of the present invention;
FIG. 5 is a first schematic flow diagram of an induced AC current according to an embodiment of the present invention;
fig. 6 is a schematic flow diagram illustrating an induced ac current according to an embodiment of the present invention;
fig. 7 is a second schematic diagram of an input current and an output current of the rectifying unit according to the embodiment of the present invention;
FIG. 8 is a three-dimensional circuit diagram of a display device according to an embodiment of the present invention;
fig. 9 is a schematic diagram of input currents and output currents of a rectifying unit and a voltage stabilizing capacitor according to an embodiment of the present invention;
fig. 10 is a first schematic structural diagram of a display device according to an embodiment of the present invention;
fig. 11 is a schematic structural diagram of a display device according to an embodiment of the present invention.
Description of the reference numerals
1. Induction power supply module 2, display panel 3 and mobile terminal power supply module
4. NFC coil 5, voltage stabilizing capacitor 11 and induction coil
12. Rectifying unit 21, light emitting element layer 221, and cathode data line
222. Anode data line 120, rectifier diode 121, first rectifier diode
122. Second rectifying diode 123, third rectifying diode 124, fourth rectifying diode
601. Transparent substrate 602, barrier layer 603, and buffer layer
604. Inorganic dielectric layer 605, planarization layer 606, pixel definition layer
607. Cathode layer 608, encapsulation protection layer 1201, cathode of rectifier diode
1202. Anode of rectifier diode
Detailed Description
Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The use of "first," "second," and similar terms in this disclosure is not intended to indicate any order, quantity, or importance, but rather is used to distinguish one element from another. Also, the use of the terms "a," "an," or "the" and similar referents do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
The anti-counterfeiting effect is poor due to the fact that patterns are printed on the surface of an article or a three-dimensional anti-counterfeiting structure is fixedly arranged on the article to perform anti-counterfeiting, and the patterns and the three-dimensional anti-counterfeiting structure are easy to forge. Therefore, the embodiment of the invention provides that a display device which is not easy to forge is added on the surface of an article, and the display device only displays a preset pattern under a specific condition so as to improve the anti-counterfeiting effect. Specifically, because display panel can give out light under drive current's drive and show, through providing the induction power supply module that can produce drive current under specific conditions, and place induction power supply module and display panel in same closed loop, induction power supply module can produce drive current and carry for display panel under specific conditions, display panel shows predetermined pattern under drive current's drive, thereby realize that display device can show predetermined pattern under specific conditions, effectively improve anti-fake effect.
Correspondingly, the embodiment of the invention provides a display device, which can comprise an induction power supply module and a display panel; the induction power supply module is used for generating a driving current under a preset condition and transmitting the driving current to the display panel; the display panel is used for displaying a preset pattern under the driving of the driving current.
Wherein, the preset pattern can comprise numbers, letters, trademarks, two-dimensional codes and the like.
The induction power supply module and the display panel are arranged in the same closed loop, the induction power supply module generates driving current under a specific condition and transmits the driving current to the display panel, and the display panel displays preset patterns under the driving of the driving current. Because the induction power supply module only generates the driving current under the specific condition, and the display panel only displays the preset pattern under the specific condition, compared with the traditional anti-counterfeiting mode of printing the specific pattern on the surface of the article or fixedly arranging the specific anti-counterfeiting structure on the article, the display device provided by the embodiment of the invention is not easy to forge, and the anti-counterfeiting effect can be greatly improved.
According to electromagnetic field theory, when the closed loop is located in an electric field, the electric field can make free electrons in a conductor directionally move to form current. The inductive power supply module can be provided as an inductive coil that can conduct electricity, and can generate an induced current when the inductive coil is in an electric field. However, since the induced current generated by the induction coil in the electric field is an alternating current, and the display panel needs to be driven by a direct current to perform light emitting display, the induction power supply module should include a rectifying unit in addition to the induction coil, and the rectifying unit is used for rectifying the induced alternating current generated by the induction coil to obtain a direct current driving current.
Accordingly, in some embodiments, the inductive power supply module may include an inductive coil and a rectifying unit, and the predetermined condition may include the inductive coil being in an electric field. The induction coil is used for generating induction alternating current under the excitation of an electric field. The rectifying unit is used for rectifying the induced alternating current to obtain a driving current.
According to the electromagnetic field theory, an electric field can be generated around a changing magnetic field, and when the closed loop is positioned in the electric field, the electric field can enable free electrons in the conductor to directionally move to form induced current. At present, mobile terminals such as mobile phones and tablet computers have a Near Field Communication (NFC) function, and an NFC coil can generate a changing magnetic flux when an alternating current is applied, so that an electric Field can be formed. Therefore, when the distance between the induction coil and the NFC coil in the mobile terminal is within a certain range, the display panel can display a preset pattern, and the anti-counterfeiting purpose can be achieved. Specifically, as shown in fig. 1, the induction power supply module 1 may include an induction coil 11 and a rectifying unit 12, and the induction power supply module 1 and the display panel 2 constitute a display device. The mobile terminal comprises a power supply module 3 and an NFC coil 4. Three double-headed arrows indicate the magnetic flux direction, and a single-headed arrow indicates the flow direction of the current. The NFC coil 4 generates a changing magnetic flux when an alternating current is applied, thereby forming an electric field. When the distance between the induction coil 11 and the NFC coil 4 is within a certain range, the induction coil 11 is located in an electric field formed by the changing magnetic flux, and an induced alternating current is generated. The rectifying unit 12 rectifies the induced ac current generated by the induction coil 11 to obtain a dc driving current, and transmits the driving current to the display panel 2, and the display panel 2 displays a predetermined pattern under the driving of the driving current.
To rectify an ac current into a dc current, half-wave rectification may be used, that is, half-cycle current (positive half-cycle current or negative half-cycle current) is lost, and only the remaining half-cycle current is output. The PN junction (p-n junction) has a unidirectional conduction characteristic, and can output a half-period direct current when a period alternating current is input to the PN junction, so that a diode formed by a single PN junction can be directly used as a rectifying unit to rectify the induced alternating current output by the induction coil. Accordingly, in some embodiments, the rectifying unit may include a single rectifying diode, one end of the induction coil is electrically connected to an anode of the rectifying diode, the other end of the induction coil is electrically connected to a negative input terminal of the display panel, and a cathode of the rectifying diode is electrically connected to a positive input terminal of the display panel.
As shown in fig. 2, which is a two-dimensional circuit schematic diagram of a display device according to an embodiment of the present invention, the rectifying unit 12 includes a single rectifying diode formed by a PN junction, an anode of the rectifying diode is formed at an end of the PN junction where the P-type region deviates from the N-type region, a cathode of the rectifying diode is formed at an end of the PN junction where the N-type region deviates from the P-type region, the cathode of the rectifying diode 12 is electrically connected to the positive input end of the display panel 2, and two ends of the induction coil 11 are respectively electrically connected to the anode of the rectifying diode 12 and the negative input end of the display panel 2.
As shown in fig. 3, when the induction coil is in an electric field, an induced alternating current may be generated. When the induced alternating current of one period is input into the rectifying unit formed by the single rectifying diode, the current of a half period is output, the output current of the half period is constant to be the positive half-period current or the negative half-period current of the induced alternating current, and finally the rectifying unit transmits the driving current of direct current to the display panel.
The rectifying unit formed by a single rectifying diode can rectify the induced alternating current generated by the induction coil to obtain direct-current driving current. The display panel is capable of performing light-emitting display by being driven by a direct-current drive current. However, since half-period current is lost in each period of the induced alternating current, the induction power supply module cannot continuously supply driving current to the display panel, so that the stroboscopic frequency of the display panel is high, stroboscopic is easily sensed by human eyes, discomfort is brought to human eyes, and the display effect is poor. Therefore, the embodiment of the invention provides that the stroboscopic frequency of the display panel is reduced by optimizing a single rectifying diode into a rectifying bridge formed by four rectifying diodes.
Accordingly, in some embodiments, the rectifying unit includes a plurality of rectifying diodes, which are a first rectifying diode, a second rectifying diode, a third rectifying diode, and a fourth rectifying diode, respectively. One end of the induction coil is electrically connected with the cathode of the first rectifier diode and the anode of the second rectifier diode, the other end of the induction coil is electrically connected with the cathode of the third rectifier diode and the anode of the fourth rectifier diode, the positive input end of the display panel is electrically connected with the cathode of the second rectifier diode and the cathode of the fourth rectifier diode, and the negative input end of the display panel is electrically connected with the anode of the first rectifier diode and the anode of the third rectifier diode.
The first rectifying diode, the second rectifying diode, the third rectifying diode and the fourth rectifying diode may be four rectifying diodes having the same structure.
As shown in fig. 4, another two-dimensional circuit diagram of the display device according to the embodiment of the present invention is provided, wherein the rectifying unit 12 includes a plurality of rectifying diodes formed by PN junctions, the plurality of rectifying diodes are a first rectifying diode 121, a second rectifying diode 122, a third rectifying diode 123 and a fourth rectifying diode 124, respectively, in the rectifying unit 12, a cathode of the first rectifying diode 121 is electrically connected to an anode of the second rectifying diode 122, a cathode of the third rectifying diode 123 is electrically connected to an anode of the fourth rectifying diode 124, an anode of the first rectifying diode 121 is electrically connected to an anode of the third rectifying diode 123, and a cathode of the second rectifying diode 122 is electrically connected to a cathode of the fourth rectifying diode 124. In the display device, one end of the induction coil 11 is electrically connected to the cathode of the first rectifying diode 121 and the anode of the second rectifying diode 122, the other end of the induction coil 11 is electrically connected to the cathode of the third rectifying diode 123 and the anode of the fourth rectifying diode 124, the positive input end of the display panel 2 is electrically connected to the cathode of the second rectifying diode 122 and the cathode of the fourth rectifying diode 124, and the negative input end of the display panel 2 is electrically connected to the anode of the first rectifying diode 121 and the anode of the third rectifying diode 123.
Since the induction coil 11 generates an induced alternating current when it is in an electric field, the induced alternating current can flow into the rectifying unit 12 from one end of the induction coil 11 or can flow into the rectifying unit 12 from the other end of the induction coil 11. As shown in fig. 5 and 6, taking the direction of the arrow shown in fig. 5 as the positive half-cycle direction of the induced ac current and the direction of the arrow shown in fig. 6 as the negative half-cycle direction of the induced ac current as an example, when the induced ac current generated by the induction coil 11 flows out in the direction of the arrow shown in fig. 5, the current flows through the anode of the second rectifier diode 122, the cathode of the second rectifier diode 122, the positive input end of the display panel 2, the negative input end of the display panel 2, the anode of the third rectifier diode 123, and the cathode of the third rectifier diode 123 in this order, and flows into the induction coil 11 from the cathode of the third rectifier diode 123. When the induced ac current generated by the induction coil 11 flows out in the direction of the arrow shown in fig. 6, the current flows through the anode of the fourth rectifying diode 124, the cathode of the fourth rectifying diode 124, the positive input terminal of the display panel 2, the negative input terminal of the display panel 2, the anode of the first rectifying diode 121, and the cathode of the first rectifying diode 121 in sequence, and flows into the induction coil 11 from the cathode of the first rectifying diode 121.
Since the induced ac current generated by the induction coil 11 can be supplied to the rectifying unit 12 in the direction of the arrow shown in fig. 5 and can also be supplied to the rectifying unit 12 in the direction of the arrow shown in fig. 6, no half cycle of the induced ac current is lost. As shown in fig. 7, when an induced ac current is input to the rectifying unit formed by four rectifying diodes for one cycle, a current of two positive half cycles is output, and finally, the rectifying unit supplies a dc continuous driving current to the display panel. Compared with a rectifying unit formed by only adopting a single rectifying diode, the utilization rate of induction alternating current can be improved, driving current is continuously conveyed to the display panel, the stroboscopic frequency is reduced to 1/2 when the rectifying unit is formed by adopting the single rectifying diode, stroboscopic frequency is not easy to be sensed by human eyes, and the display effect is obviously improved.
The rectifying unit formed by the first rectifying diode, the second rectifying diode, the third rectifying diode and the fourth rectifying diode can rectify the induced alternating current generated by the induction coil, but the voltage provided for the display panel is unstable, and the display panel needs a certain voltage for light emitting display, so that a voltage stabilizing capacitor can be additionally arranged to perform voltage stabilizing treatment, and the display effect of the display panel is further improved. Accordingly, in some embodiments, the display device further includes a voltage stabilizing capacitor, a first pole of the voltage stabilizing capacitor is electrically connected to the positive input terminal of the display panel, and a second pole of the voltage stabilizing capacitor is electrically connected to the negative input terminal of the display panel.
As shown in fig. 8, a schematic diagram of another two-dimensional circuit of a display device according to an embodiment of the present invention is provided, in which the display device may further include a voltage stabilizing capacitor 5. The first rectifier diode 121, the second rectifier diode 122, the third rectifier diode 123, and the fourth rectifier diode 124 constitute the rectifier unit 12, and in the rectifier unit 12, the cathode of the first rectifier diode 121 is electrically connected to the anode of the second rectifier diode 122, the cathode of the third rectifier diode 123 is electrically connected to the anode of the fourth rectifier diode 124, the anode of the first rectifier diode 121 is electrically connected to the anode of the third rectifier diode 123, and the cathode of the second rectifier diode 122 is electrically connected to the cathode of the fourth rectifier diode 124. In the display device, one end of the induction coil 11 is electrically connected to the cathode of the first rectifying diode 121 and the anode of the second rectifying diode 122, the other end of the induction coil 11 is electrically connected to the cathode of the third rectifying diode 123 and the anode of the fourth rectifying diode 124, the positive input end of the display panel 2 is electrically connected to the cathode of the second rectifying diode 122 and the cathode of the fourth rectifying diode 124, and the negative input end of the display panel 2 is electrically connected to the anode of the first rectifying diode 121 and the anode of the third rectifying diode 123. The first stage of the voltage-stabilizing capacitor 5 is electrically connected with the positive input end of the display panel 2, and the second stage of the voltage-stabilizing capacitor 5 is electrically connected with the negative input end of the display panel 2. The voltage stabilizing capacitor 5 collects the charges first and then releases the charges slowly and stably, thereby playing a role of stabilizing the voltage. As shown in fig. 9, after the induced ac current generated by the induction coil is input to the rectifying unit and the voltage stabilizing capacitor, a stable and dc driving current can be output, thereby further improving the display effect of the display panel.
In some embodiments, the display panel may include a flexible organic light emitting diode OLED display panel. The flexible OLED display panel has the characteristics of deformation and thinness, the display device comprising the flexible OLED display panel is fixedly arranged on the surface of an article, the normal use of the article cannot be influenced, the anti-counterfeiting characteristic can be improved, and the convenience in use of the article can be guaranteed.
In some embodiments, the display device may further include a substrate base plate, a PN junction of the rectifying diode is formed on the substrate base plate, the induction coil, a cathode of the rectifying diode, and an anode of the rectifying diode are located in the same layer, and are disposed on a side of the layer where the PN junction is located, which is away from the substrate base plate, and an orthographic projection of the induction coil on the substrate base plate is not overlapped with an orthographic projection of the cathode of the rectifying diode and an orthographic projection of the anode of the rectifying diode on the substrate base plate; the display panel is arranged on one side of the layer where the induction coil is located and deviated from the substrate base plate.
The substrate can comprise a transparent substrate, a barrier layer and a buffer layer which are sequentially stacked, a PN junction of the rectifying diode is formed on the buffer layer, and an inorganic medium layer positioned on the buffer layer is close to one side of the buffer layer. The induction coil, the cathode of the rectifier diode and the anode of the rectifier diode are positioned on the inorganic medium layer on the buffer layer and are arranged on one side of the inorganic medium layer, which is far away from the buffer layer. The orthographic projection of the induction coil on the substrate base plate is not overlapped with the orthographic projection of the cathode of the rectifier diode and the anode of the rectifier diode on the substrate base plate. The display panel is arranged on the pixel defining layer on one side of the inorganic medium layer, which is far away from the substrate base plate.
In some embodiments, the display panel may include a light emitting element layer and a data line layer, the data line layer may include a cathode data line and an anode data line, the light emitting element layer may include a plurality of light emitting elements arranged in a predetermined pattern, anodes of the plurality of light emitting elements are electrically connected to the anode data line, and cathodes of the plurality of light emitting elements are electrically connected to the cathode data line; the cathode data line is electrically connected with the negative input end of the display panel, and the anode data line is electrically connected with the positive input end of the display panel.
The cathode data line may form a negative input terminal of the display panel and the anode data line may form a positive input terminal of the display panel.
In some embodiments, the display device further includes a planarization layer disposed between the layer where the sensing power module is located and the layer where the display panel is located, the anode data line is electrically connected to the sensing power module through a first via hole penetrating the planarization layer, and the cathode data line is electrically connected to the sensing power module through a second via hole penetrating the planarization layer.
The display panel comprises a buffer layer, an inorganic medium layer, a planarization layer and a pixel definition layer, wherein the inorganic medium layer, the planarization layer and the pixel definition layer are sequentially stacked on the buffer layer, an induction power supply module is positioned on the inorganic medium layer, the display panel is positioned on the pixel definition layer, an anode data line in a data line layer of the display panel is electrically connected with the induction power supply module in the inorganic medium layer through a first through hole penetrating through the planarization layer, and a cathode data line in the data line layer of the display panel is electrically connected with the induction power supply module in the inorganic medium layer through a second through hole penetrating through the planarization layer.
It should be noted that the induction power supply module includes an induction coil and a single or multiple rectifier diodes. When the rectifying unit includes a plurality of rectifying diodes, the anode data line of the display panel is electrically connected to the cathode of the second rectifying diode and the cathode of the fourth rectifying diode through the first via hole penetrating the planarization layer, and the cathode data line of the display panel is electrically connected to the anode of the first rectifying diode and the anode of the third rectifying diode through the second via hole penetrating the planarization layer. When the rectifying unit comprises a single rectifying diode, the anode data line of the display panel is electrically connected with one end of the induction coil through a first through hole penetrating through the planarization layer, the cathode data line of the display panel is electrically connected with the cathode of the rectifying diode through a second through hole penetrating through the planarization layer, and the other end of the induction coil is electrically connected with the anode of the rectifying diode.
The induction coil may be deposited and spirally formed using a low resistance metal material (e.g., copper alloy, aluminum alloy, etc.) to further improve the utilization of the induced ac current, and accordingly, in some embodiments, the induction coil is formed using a copper alloy or an aluminum alloy.
Fig. 10 is a cross-sectional view of a display device according to an embodiment of the present invention. Take the example where the rectifying unit includes a single rectifying diode 120. The display device may include a transparent substrate 601, a barrier layer 602, a buffer layer 603, an inorganic dielectric layer 604, a planarization layer 605, a pixel definition layer 606, a cathode layer 607, and an encapsulation layer 608, which are sequentially stacked. The substrate includes a transparent substrate 601, a barrier layer 602, and a buffer layer 603. The PN junction of the rectifying diode 120 is formed on the substrate and located on the inorganic dielectric layer 604, and the induction coil 11, the cathode 1201 of the rectifying diode, and the anode 1202 of the rectifying diode 120 are also located on the inorganic dielectric layer 604 and are disposed on a side of the inorganic dielectric layer 604 away from the substrate. The orthographic projection of the induction coil 11 on the buffer layer 603 does not overlap with the orthographic projection of the cathode 1201 of the rectifier diode 120 and the anode 1202 of the rectifier diode 120 on the buffer layer. The display panel is disposed on the pixel defining layer 606. The display panel includes a light emitting element layer 21 and a data line layer, the data line layer includes a cathode data line 221 and an anode data line 222, the light emitting element layer 21 may include a plurality of light emitting elements arranged in a predetermined pattern, anodes of the plurality of light emitting elements are electrically connected to the anode data line 222, and cathodes of the plurality of light emitting elements are electrically connected to the cathode data line 221. The cathode data line 221 is electrically connected to the negative input terminal of the display panel, and the anode data line 222 is electrically connected to the positive input terminal of the display panel. The anode data line 222 is electrically connected to the induction coil 11 through a first via hole penetrating the planarization layer 605, and the cathode data line 221 is electrically connected to the cathode 1201 of the rectifier diode 120 through a second via hole penetrating the planarization layer 605. When the display device is manufactured, P/N doping (doping) may be performed on the buffer layer 603 and PR glue is used for blocking, so as to form a P-type doped region and an N-type doped region, respectively, and form a PN junction in the rectifying diode 120. The cathode 1201 and anode 1202 of the rectifier diode 120 are again attached above the PN junction.
Fig. 11 is a cross-sectional view of another display device according to an embodiment of the present invention. Take the example that the rectifying unit 12 includes four rectifying diodes (angle limitation, only two rectifying diodes are exemplarily shown in fig. 11). The display device may include a transparent substrate 601, a barrier layer 602, a buffer layer 603, an inorganic dielectric layer 604, a planarization layer 605, a pixel definition layer 606, a cathode layer 607, and an encapsulation layer 608, which are sequentially stacked. The substrate includes a transparent substrate 601, a barrier layer 602, and a buffer layer 603. The PN junction of the rectifier diode is formed on the substrate and located in the inorganic dielectric layer 604, and the induction coil 11, the cathode of the rectifier diode, and the anode of the rectifier diode are also located in the inorganic dielectric layer 604 and are disposed on a side of the inorganic dielectric layer 604 away from the substrate. The orthographic projection of the induction coil 11 on the buffer layer 603 does not overlap with the orthographic projection of the cathode of the rectifier diode and the anode of the rectifier diode on the buffer layer. The display panel is disposed on the pixel defining layer 606. The display panel includes a light emitting element layer 21 and a data line layer, the data line layer includes a cathode data line 221 and an anode data line 222, the light emitting element layer 21 may include a plurality of light emitting elements arranged in a predetermined pattern, anodes of the plurality of light emitting elements are electrically connected to the anode data line 222, and cathodes of the plurality of light emitting elements are electrically connected to the cathode data line 221. The cathode data line 221 is electrically connected to the negative input terminal of the display panel, and the anode data line 222 is electrically connected to the positive input terminal of the display panel. The anode data line 222 is electrically connected to the rectifying unit 12 through a third via hole penetrating the planarization layer 605, and the cathode data line 221 is electrically connected to the rectifying unit 12 through a fourth via hole penetrating the planarization layer 605. When the display device is manufactured, P/N doping (doping) can be performed on the buffer layer 603 and PR glue is used for blocking, so that a P-type doping region and an N-type doping region are formed respectively, and a PN junction in the rectifying diode is formed. And the cathode and the anode of the rectifier diode are added on the PN junction. The positive projection of the anode data line 222 and the positive input end of the display panel on the pixel definition layer 606 is larger than the positive projection of the cathode data line 221 and the negative input end of the display panel on the pixel definition layer 606, which is equivalent to enlarging the anode of the display panel, and a voltage stabilizing capacitor is additionally arranged between the cathode and the anode of the display panel, so that the voltage stabilizing effect can be achieved.
It will be understood that the above embodiments are merely exemplary embodiments taken to illustrate the principles of the present invention, which is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.
Claims (10)
1. The display device is characterized by comprising an induction power supply module and a display panel; the induction power supply module is used for generating a driving current under a preset condition and transmitting the driving current to the display panel; the display panel is used for displaying preset patterns under the driving of the driving current.
2. The display device according to claim 1, wherein the inductive power supply module includes an inductive coil and a rectifying unit, and the predetermined condition includes the inductive coil being in an electric field;
the induction coil is used for generating induction alternating current under the excitation of the electric field;
the rectifying unit is used for rectifying the induction alternating current to obtain the driving current.
3. The display device according to claim 2, wherein the rectifying unit comprises a single rectifying diode, one end of the induction coil is electrically connected to an anode of the rectifying diode, the other end of the induction coil is electrically connected to a negative input terminal of the display panel, and a cathode of the rectifying diode is electrically connected to a positive input terminal of the display panel.
4. The display device according to claim 2, wherein the rectifying unit includes a plurality of rectifying diodes which are a first rectifying diode, a second rectifying diode, a third rectifying diode, and a fourth rectifying diode, respectively;
one end of the induction coil is electrically connected with the cathode of the first rectifying diode and the anode of the second rectifying diode, the other end of the induction coil is electrically connected with the cathode of the third rectifying diode and the anode of the fourth rectifying diode, the positive input end of the display panel is electrically connected with the cathode of the second rectifying diode and the cathode of the fourth rectifying diode, and the negative input end of the display panel is electrically connected with the anode of the first rectifying diode and the anode of the third rectifying diode.
5. The display device according to claim 3 or 4, further comprising a voltage stabilizing capacitor, wherein a first pole of the voltage stabilizing capacitor is electrically connected to the positive input terminal of the display panel, and a second pole of the voltage stabilizing capacitor is electrically connected to the negative input terminal of the display panel.
6. The display device according to claim 5, wherein the display panel comprises a flexible organic light emitting diode display panel.
7. The display device according to claim 3 or 4, wherein the display device further comprises a substrate, the PN junction of the rectifying diode is formed on the substrate, the induction coil, the cathode of the rectifying diode and the anode of the rectifying diode are positioned in the same layer and are arranged on the side of the layer where the PN junction is positioned, which is far away from the substrate, and the orthographic projection of the induction coil on the substrate does not overlap with the orthographic projection of the cathode of the rectifying diode and the anode of the rectifying diode on the substrate; the display panel is arranged on one side, away from the substrate, of the layer where the induction coil is located.
8. The display device according to claim 7, wherein the display panel comprises a light emitting element layer and a data line layer, the data line layer comprises a cathode data line and an anode data line, the light emitting element layer comprises a plurality of light emitting elements, the light emitting elements are arranged in the predetermined pattern, anodes of the plurality of light emitting elements are electrically connected to the anode data line, and cathodes of the plurality of light emitting elements are electrically connected to the cathode data line; the cathode data line is electrically connected with the negative input end of the display panel, and the anode data line is electrically connected with the positive input end of the display panel.
9. The display device according to claim 8, further comprising a planarization layer disposed between the layer where the sensing power supply module is located and the layer where the display panel is located, wherein the anode data line is electrically connected to the sensing power supply module through a first via hole penetrating through the planarization layer, and the cathode data line is electrically connected to the sensing power supply module through a second via hole penetrating through the planarization layer.
10. The display device according to claim 9, wherein the induction coil is formed using a copper alloy or an aluminum alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110941264.7A CN113658534A (en) | 2021-08-17 | 2021-08-17 | Display device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110941264.7A CN113658534A (en) | 2021-08-17 | 2021-08-17 | Display device |
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| CN113658534A true CN113658534A (en) | 2021-11-16 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023168549A1 (en) * | 2022-03-07 | 2023-09-14 | 京东方科技集团股份有限公司 | Display panel and display device |
| WO2023230904A1 (en) * | 2022-05-31 | 2023-12-07 | 京东方科技集团股份有限公司 | Light-emitting device and light-emitting apparatus |
-
2021
- 2021-08-17 CN CN202110941264.7A patent/CN113658534A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023168549A1 (en) * | 2022-03-07 | 2023-09-14 | 京东方科技集团股份有限公司 | Display panel and display device |
| WO2023230904A1 (en) * | 2022-05-31 | 2023-12-07 | 京东方科技集团股份有限公司 | Light-emitting device and light-emitting apparatus |
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