A kind of double face display panel and its display device
Technical field
The present invention relates to field of display technology more particularly to a kind of double face display panel and its display devices.
Background technique
With the progress of display technology, the variation of Popular Aesthetics, narrow frame and Rimless are increasingly taken seriously.In order to protect
Card reduces the accounting of non-display screen to the greatest extent, the design of double-sided display OLED occurs.
It is that double-sided display effect is generated by the positive and negative overlap joint of 2 panels mostly for current double-sided display OLED product.This
Mode is not only difficult to decrease the integral thickness of display, but also since to be spliced, it is high that there are fraction defectives, difficult processing
Spend the problems such as big, it is difficult to realize volume production.
Summary of the invention
Based on this, the present invention provides a kind of double face display panel and its display device, without 2 panels overlapped situation
Under, it realizes the effect of double-sided display same frame, reduces the integral thickness of display, it is feasible to improve double-sided display product volume production
Property.
To solve the above-mentioned problems, a kind of double face display panel is provided in one embodiment of the invention, including what is stacked gradually
First electrode, the first luminescent layer, second electrode, the second luminescent layer and third electrode.Wherein first in the first luminescent layer shines
The cathode of diode is electrically connected the first electrode;Second electrode is electrically connected the first light emitting diode of first luminescent layer
Anode;The cathode of the second light emitting diode in second luminescent layer is electrically connected the second electrode;Described in the electrical connection of third electrode
The anode of second light emitting diode of the second luminescent layer;The first electrode, the first luminescent layer and second electrode can after being powered
Realize that first luminescent layer shines;The second electrode, the second luminescent layer and third electrode can be realized described the after being powered
Two luminescent layers shine.Setting is not necessarily to 2 panel laps in this way, realizes the effect of double-sided display same frame, reduces display
Integral thickness.
Further, wherein the third electrode is electrically connected the first electrode, wherein first electricity after electrical connection
Pole connects an output end of one drive circuit with third electrode, and the second electrode connects another output of the driving circuit
End, to realize that use is driven with one drive circuit.
Further, wherein the driving circuit is AC driving circuit, first luminescent layer and the second luminescent layer root
It alternately shines according to the conversion frequency of the AC driving circuit.Setting is without by being direct current progress by AC conversion in this way
It utilizes, realizes and be directly connected to using alternating current, thus more energy saving.
Since the first light emitting diode of the first luminescent layer and the second light emitting diode of the second luminescent layer invert, when with
When the driving circuit of two electrodes connection is positive pressure, second electrode is the first luminescent layer anode, and first electrode is the first luminescent layer yin
Pole, the first luminescent layer shine, at this time from the first luminescent layer front it can be seen that display picture, and the of second luminescent layer at the back side
Two light emitting diodes are not shine, therefore the back side is without picture by state;Conversely, when the driving circuit being connect with second electrode
When for negative pressure, third electrode is the second luminescent layer anode, and second electrode is the second luminescent layer cathode, the second luminescent layer conducting hair
Light, and the first light emitting diode of first luminescent layer at the second luminescent layer back side inverts, and in by state, second shines at this time
The layer back side is without picture.It, can when the reversal frequency of the AC driving circuit of driving circuit and picture refreshing rate reache a certain level
The effect of picture can be shown simultaneously in the case where human eye can not be discovered, to reach front and back sides.
Further, wherein the second electrode is metal electrode, the metal electrode can be reflected from first hair
The light of photosphere and the second luminescent layer.
Further, wherein the first electrode and the third electrode are transparent electrode.Transparent electrode can effectively thoroughly
Light prevents shading from causing display brightness relatively low.
Further, wherein being equipped with upper polaroid far from the side of the second electrode in the third electrode.
Further, wherein being equipped with down polaroid far from the side of the second electrode in the first electrode.
Further, wherein being equipped with optical filter of enameling far from the side of the second electrode in the third electrode.
Further, wherein being equipped with lower colored filter far from the side of the second electrode in the first electrode.
A kind of display device, including double-sided display face described in any of the above embodiments are provided in another embodiment of the present invention
Plate.
The technical effects of the invention are that providing a kind of double face display panel and its display device, set backwards by two
On the one hand the first luminescent layer and the second luminescent layer set are not necessarily to 2 panel laps, realize the effect of double-sided display same frame,
The integral thickness of display is reduced, on the other hand without realizing directly by being that direct current utilizes by AC conversion
Connection utilizes alternating current, thus it is more energy saving, to improve double-sided display product volume production feasibility.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the double face display panel of first embodiment of the invention;
Fig. 2 is the image element circuit structure schematic diagram of the double face display panel of second embodiment of the invention;
Fig. 3 is the structural schematic diagram of the double face display panel of third embodiment of the invention;
Fig. 4 is the structural schematic diagram of the double face display panel of first embodiment of the invention;
Fig. 5 is the structural schematic diagram of the double face display panel of third embodiment of the invention.
Component mark is as follows in figure:
1 first electrode, 2 first luminescent layers, 3 second electrodes, 4 second luminescent layers, 5 third electrodes,
6 upper polaroids, 7 down polaroids, 8 are enameled optical filter, 9 lower colored filters,
10 first connecting pins, 20 second connection ends, 30 third connecting pins,
21 first light emitting diodes, 41 second light emitting diodes.
Specific embodiment
The explanation of following embodiment is referred to the additional illustration, the particular implementation that can be used to implement to illustrate the present invention
Example.The direction term that the present invention is previously mentioned, such as [on], [under], [preceding], [rear], [left side], [right side], [interior], [outer], [side]
Deng being only the direction with reference to annexed drawings.Therefore, the direction term used be to illustrate and understand the present invention, rather than to
The limitation present invention.The similar unit of structure is with being given the same reference numerals in the figure.
Refering to Figure 1, provide a kind of double face display panel in one embodiment of the invention, including successively layer from bottom to up
First electrode 1, the first luminescent layer 2, second electrode 3, the second luminescent layer 4 and the third electrode 5 of folded setting.Wherein the first luminescent layer
The cathode of the first light emitting diode 21 in 2 is electrically connected the first electrode 1;Second electrode 3 is electrically connected first luminescent layer 2
The first light emitting diode 21 anode;The cathode electrical connection described second of the second light emitting diode 41 in second luminescent layer 4
Electrode 3;Third electrode 5 is electrically connected the anode of the second light emitting diode 41 of second luminescent layer 4;The first electrode 1,
One luminescent layer 2 and second electrode 3 can be realized first luminescent layer 2 after being powered and shine;The second electrode 3, second shines
Layer 4 and third electrode 5 can be realized second luminescent layer 4 after being powered and shine.Setting is not necessarily to 2 panel laps in this way, realizes
The effect of double-sided display same frame reduces the integral thickness of display.First luminescent layer 2 He of the two of them backwards to setting
The transmitting radiation direction of second luminescent layer 4 please refers to arrow direction shown in FIG. 1.
Further, wherein the third electrode 5 is electrically connected the first electrode 1, wherein described first after electrical connection
Electrode 1 and third electrode 5 connect an output end of one drive circuit, and the second electrode 3 connects the another of the driving circuit
Output end, to realize that use is driven with one drive circuit.Wherein the third electrode 5 is electrically connected the first electrode 1
Mode can also be connected by one through the aperture of the second electrode 3 to be connected by welding manner.The aperture
Positioned at the first electrode 1, the second electrode 3, the third electrode 5 gap location that is patterned that treated, figure is carried out
The mode of shapeization processing includes high-precision metal mask plate (fine metal mask, FMM) evaporation process, printing or transfer etc.
Mode.
Further, wherein the driving circuit is AC driving circuit, first luminescent layer 2 and the second luminescent layer 4
It is alternately shone according to the conversion frequency of the AC driving circuit.In this way setting without by by AC conversion be direct current into
Row utilizes, and realizes and is directly connected to using alternating current, thus more energy saving.
Wherein the second electrode 3 is metal electrode, and the metal electrode can be reflected from first luminescent layer 2 and the
The light of two luminescent layers 4.
Wherein the first electrode 1 and the third electrode 5 are transparent electrode.Transparent electrode is significantly light transmitting, prevents
Shading causes display brightness relatively low.
It please refers to shown in Fig. 2, is the image element circuit structure schematic diagram of double face display panel, including the first connecting pin 10, the
Two connecting pins 20, third connecting pin 30.First connecting pin 10 connects supply voltage (VoltageDrain Drain, Vdd) and connects
Lead to the second electrode 3;Second connection end 20 connects ground voltage (Vss), between the first connecting pin 10 and second connection end 20
First luminescent layer 2 and the second luminescent layer 4 are connected, the first connecting pin 10 connects the first luminous two of first luminescent layer 2
The cathode of second light emitting diode 41 of the anode and second luminescent layer 4 of pole pipe 21;Third connecting pin 30 connects external defeated
Enter data, for controlling second luminescent layer 4 and the first luminescent layer 2.
By the first light emitting diode 21 of the first luminescent layer 2 and the second light emitting diode 41 of the second luminescent layer 4 and institute
The connecting pin for stating second electrode 3 inverts, and when the driving circuit Vdd connecting with second electrode 3 is positive pressure, second electrode 3 is the
One luminescent layer, 2 anode, first electrode 1 are 2 cathode of the first luminescent layer, and the first luminescent layer 2 shines, just from the first luminescent layer 2 at this time
Face it can be seen that display picture, and the second light emitting diode 41 of second luminescent layer 4 at the back side be by state, do not shine, because
This back side is without picture;Conversely, third electrode 5 is second luminous when the driving circuit Vdd connecting with second electrode 3 is negative pressure
4 anode of layer, second electrode 3 are 4 cathode of the second luminescent layer, and the conducting of the second luminescent layer 4 shines, and the of 4 back side of the second luminescent layer
First light emitting diode 21 of one luminescent layer 2 inverts, and in by state, 4 back side of the second luminescent layer is without picture at this time.Work as driving
When the reversal frequency of the AC driving circuit of circuit and picture refreshing rate reache a certain level, the feelings that can not discover in human eye
Under condition, the effect of picture can be shown simultaneously by reaching display panel front and back sides.
It please refers to shown in Fig. 3, wherein being equipped with upper polaroid far from the side of the second electrode 3 in the third electrode 5
6;Down polaroid 7 is equipped with far from the side of the second electrode 3 in the first electrode 1.
It please refers to shown in Fig. 4, wherein being equipped with filter of enameling far from the side of the second electrode 3 in the third electrode 5
Mating plate 8;It is equipped with lower colored filter 9 far from the side of the second electrode 3 in the first electrode 1, to realize two-sided same
When show the effect of same frame.
Please refer to shown in Fig. 5, enamel optical filter 8 and lower colored filter 9 can also have the function of polarisation, from without
Upper polaroid 6 and down polaroid 7 is separately provided.
A kind of display device, including double-sided display face described in any of the above embodiments are provided in another embodiment of the present invention
Plate.
The technical effects of the invention are that providing a kind of double face display panel and its display device, set backwards by two
On the one hand the first luminescent layer and the second luminescent layer set are not necessarily to 2 panel laps, realize the effect of double-sided display same frame,
The integral thickness of display is reduced, on the other hand without realizing directly by being that direct current utilizes by AC conversion
Connection utilizes alternating current, thus it is more energy saving, to improve double-sided display product volume production feasibility.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
Member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications also should be regarded as
Protection scope of the present invention.