CN106601777B - Double-side display device - Google Patents
Double-side display device Download PDFInfo
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- CN106601777B CN106601777B CN201611235919.4A CN201611235919A CN106601777B CN 106601777 B CN106601777 B CN 106601777B CN 201611235919 A CN201611235919 A CN 201611235919A CN 106601777 B CN106601777 B CN 106601777B
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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
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
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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
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/127—Active-matrix OLED [AMOLED] displays comprising two substrates, e.g. display comprising OLED array and TFT driving circuitry on different substrates
- H10K59/1275—Electrical connections of the two substrates
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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
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/128—Active-matrix OLED [AMOLED] displays comprising two independent displays, e.g. for emitting information from two major sides of the display
Abstract
The present invention discloses a kind of double-side display device, the double-side display device includes substrate, be cascading square on the substrate TFT layer, the first luminescent layer and the first encapsulated layer, the second luminescent layer and the second encapsulated layer being cascading below the substrate, wherein, several via holes are electrically connected through the substrate and by the TFT layer and first luminescent layer and second luminescent layer.
Description
Technical field
The present invention relates to field of display technology, more particularly to a kind of double-side display device.
Background technique
The form of electronic product is gradually diversified, and double-sided display function becomes a kind of characteristic of new generation electronic product.Example
Such as, the display with double faces of interior of mobile phone can show that mobile phone function of tonic chord window, another side show the time on one side；For another example in public field
Close the various contents that can see displaying by the personnel of display two sides using display with double faces.Current display with double faces is usual
It is two one side show panels to pasting, such as a liquid crystal display panel is arranged back-to-back with an organic electroluminescence panel,
The setting of either two organic electroluminescence panel backrests or two pieces of liquid crystal display backrest settings.Such showing back to setting
Show that panel needs to be respectively set printed circuit board and integrated circuit to carry out signal control, while carrying out needing two when double-sided display
A signal input part, this be unfavorable for the reduction of cost and use it is convenient.Display panel back to setting is with thicker degree
Double-layer structure, this is unfavorable for the lightening of electronic product.Display with double faces made of fitting simultaneously in two pieces of display panels
In each display surface there are the control switches such as TFT and interlock circuit, TFT structure is complicated, fabrication procedures are complicated, especially exists
Light shield is even more various in LTPS technique, therefore panel utilization is very low.
Summary of the invention
The invention mainly solves the technical problem of providing a kind of double-side display devices, to reduce cost, promote product
Lightening and promotion area utilization.
In order to solve the above technical problems, one technical scheme adopted by the invention is that: a kind of double-side display device, institute are provided
Stating double-side display device includes substrate, the TFT layer square on the substrate that is cascading, the first luminescent layer and the first encapsulation
Layer, the second luminescent layer and the second encapsulated layer being cascading below the substrate, wherein several via holes run through the base
The TFT layer and first luminescent layer and second luminescent layer are simultaneously electrically connected by bottom.
Wherein, the substrate includes the first substrate and the second substrate being oppositely arranged, and the TFT layer, described first shine
Layer and first encapsulated layer are cascading above first substrate, second luminescent layer and second encapsulation
Layer is cascading below second substrate, passes through conducting resinl electrical property between first substrate and second substrate
Connection, wherein several via holes are through first substrate, the conducting resinl and second substrate and by the TFT layer and institute
It states the first luminescent layer and second luminescent layer is electrically connected.
Wherein, several first TFT devices and several 2nd TFT devices be set on the TFT layer, on first luminescent layer
Several first luminescent devices are set, several second luminescent devices, every one first TFT device are set on second luminescent layer
It is correspondingly connected with one first luminescent device, every one second TFT device is correspondingly connected with one second luminescent device.
Wherein, several TFT devices are set on the TFT layer, several first luminescent devices are set on first luminescent layer,
Several second luminescent devices are set on second luminescent layer, every TFT device be correspondingly connected with one first luminescent device and
One second luminescent device.
Wherein, the substrate is equipped with a pad area, and the pad area is uncovered, and the pad area is electrically connected institute
It states the first luminescent layer and second luminescent layer and control system is connected by flexible circuit board.
Wherein, the substrate is equipped with first and second pad area, first and second described pad area is uncovered, institute
The first pad area is stated to be electrically connected first luminescent layer and connect control system, second pad area by flexible circuit board
It is electrically connected second luminescent layer and control system is connected by flexible circuit board.
Wherein, first substrate is equipped with a pad area, and the pad area is uncovered, and the pad area electrically connects
It connects first luminescent layer and second luminescent layer and control system is connected by flexible circuit board.
Wherein, first substrate is equipped with first and second pad area, first and second described pad area is not coated
Lid, first pad area are electrically connected first luminescent layer and by flexible circuit board connection control systems, and described second
Pad area is electrically connected second luminescent layer and connects control system by flexible circuit board.
Wherein, the substrate or first and second described substrate are glass, transparent metal, polyimides (PI), poly- carbonic acid
Ester (PC), polyether sulfone (PES), polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polyarylate
Close the combination of one or more of object (PAR) fiberglass reinforced plastics (FRP) or ceramics.
Wherein, the TFT layer includes buffer layer, the semiconductor layer for being set to the buffer-layer surface, is covered in described half
The gate insulating layer of conductor layer surface, is covered in the gate insulating layer at the gate pattern being set on the gate insulating layer
The flatness layer on surface, the source electrode pattern for being set on the flatness layer and being spaced each other and drain pattern, and the source electrode pattern
It is electrically connected with drain pattern by the semiconductor layer；First and second described luminescent device includes first electrode, shines
Layer and second electrode, the luminescent layer are arranged between the first electrode and the second electrode, wherein the first electrode
For anode, the second electrode is cathode, and picture is equipped between the first electrode and luminescent layer of two adjacent luminescent devices
Plain confining layers, to limit the shape of the first electrode and the luminescent layer.
The beneficial effects of the present invention are: being in contrast to the prior art, double-side display device of the invention passes through
It is arranged on the TFT layer of one display surface while controls the TFT device of first luminescent layer and the second luminescent layer or in the TFT
Be respectively set the TFT device of the TFT device for controlling first luminescent layer and control second luminescent layer on layer, and by
Via hole is set in the substrate, the second luminescent layer is connected to TFT layer, the area for improving first and second display surface is realized with this
Utilization rate, and the shared pad area by the way that first and second display surface is arranged, so that the integrated circuit of double-side display device, control
System and signal input apparatus share, so that cost reduces and convenient for the lightening of display device.
Detailed description of the invention
Fig. 1 a and Fig. 1 b are the structural schematic diagrams of the first embodiment of double-side display device of the invention；
Fig. 2 a is the pixel arrangement schematic diagram of Fig. 1 a；
Fig. 2 b is the pixel arrangement schematic diagram of Fig. 1 b；
Fig. 3 is the structural schematic diagram of the TFT layer and luminescent layer in Fig. 1；
Fig. 4 a to Fig. 4 d is the structural schematic diagram of the double-side display device connection control system of Fig. 1；
Fig. 5 a to Fig. 5 d is that the cabling of the double-side display device of Fig. 1 is connected to the schematic diagram of pad area；
Fig. 6 is the structural schematic diagram of the second embodiment of double-side display device of the invention；
Fig. 7 is the pixel arrangement schematic diagram of Fig. 6；
Fig. 8 is the structural schematic diagram of the double-side display device connection control system of Fig. 6；
Fig. 9 is the structural schematic diagram of the 3rd embodiment of double-side display device of the invention；
Figure 10 is the structural schematic diagram of the double-side display device connection control system of Fig. 9；
Figure 11 is the pixel arrangement schematic diagram of Fig. 9；
Figure 12 a and Figure 12 b are the structural schematic diagrams of the fourth embodiment of double-side display device of the invention；
Figure 13 a and Figure 13 b are the pixel arrangement schematic diagrames of Figure 12；
Figure 14 a to Figure 14 d is the structural schematic diagram of the double-side display device connection control system of Figure 12；
Figure 15 a to Figure 15 d is that the cabling of the double-side display device of Figure 12 is connected to the schematic diagram of pad area.
Specific embodiment
Fig. 1 a and Fig. 1 b and Fig. 2 a and Fig. 2 b is please referred to, is the structure of the first embodiment of double-side display device of the invention
Schematic diagram.The double-side display device includes substrate 10, the TFT layer being cascading above the substrate 10 20, first
Luminescent layer 30 and the first encapsulated layer 40, the second luminescent layer 50 and the second encapsulated layer being cascading below the substrate 10
60, wherein several via holes 70 are sent out through the substrate 10 and by the TFT layer 20 with first luminescent layer 30 and described second
Photosphere 50 is electrically connected.Wherein, first and second described luminescent layer includes anode, luminous material layer and cathode.In the present invention
Although the double-side display device is reduced to four substrate, TFT layer, luminescent layer, encapsulated layer structures, this four structures can
To contain all parts of display demand, although the present invention has only sketched the double-side display device convenient for inventive point description
Part-structure and component, but it is not limited to this, other devices and function of the double-side display device are same as the prior art,
Details are not described herein.
Several first TFT devices 21 and several 2nd TFT devices 22, first luminescent layer are set on the TFT layer 20
Several first luminescent devices are set on 30, several second luminescent devices are set on second luminescent layer 50, described every one first
TFT device 21 is correspondingly connected with one first luminescent device, and every one second TFT device 22 is correspondingly connected with one second luminescent device.
Wherein, the first TFT device 21 control first luminescent device shine with carry out the first display surface display, described second
Described in the drain electrode of TFT (thin film transistor (TFT)) device 22 is connected to by via hole 70 in the substrate 10 and its interior conductive materials
The first electrode signal (pixel electrode) of second luminescent device is shone with to control second luminescent device and carries out the second display
The display in face, while also including second electrode (public electrode) and other signals.Wherein, the conductive materials in via hole 70 can be
Ag glue can also be welded by scolding tin and be allowed to connected, be also possible to the metal to be formed (such as Al/Mo etc.).
Specifically, the difference of Fig. 1 a and Fig. 1 b is the resolution ratio phase that Fig. 1 a illustrates the first display surface with the second display surface
Together, and Fig. 1 b then illustrates that the resolution ratio of the first display surface described in the resolution ratio of second display surface is higher, wherein first
Display surface is top panel, and second display surface is lower panel.
Fig. 2 a and 2b are please referred to, is pixel arrangement schematic diagram of the invention.Fig. 2 a is that the corresponding pixel arrangement of Fig. 1 a is shown
It is intended to, wherein be arranged on the quantity for the first TFT device 21 being arranged on first display surface and second display surface
The 2nd TFT device 22 quantity it is identical, therefore, the connection being arranged on first display surface the first TFT device
The pixel quantity for connection the 2nd TFT device 22 being arranged on 21 pixel quantity and second display surface is identical, i.e. institute
It is identical as the resolution ratio of second display surface to state the first display surface.Fig. 2 b is the corresponding pixel arrangement schematic diagram of Fig. 1 b,
In, the quantity for the first TFT device 21 being arranged on first display surface, which is significantly more than on second display surface, to be arranged
The 2nd TFT device 22 quantity, therefore, connection the first TFT device 21 being arranged on first display surface
Pixel quantity more than connection the 2nd TFT device 22 being arranged on second display surface pixel quantity, i.e., described second
The high resolution of display surface is in the resolution ratio of first display surface.
Referring to Fig. 3, being the TFT layer of double-side display device of the invention and the structural schematic diagram of luminescent layer.The TFT layer
20 include buffer layer 41, be set to 41 surface of buffer layer semiconductor layer 38, be covered in 38 surface of semiconductor layer
Gate insulating layer 39, the gate pattern 40 being set on the gate insulating layer 39 are covered in 39 surface of gate insulating layer
Flatness layer 35, be set to the source electrode pattern 36 on the flatness layer 35 and being spaced each other and drain pattern 37, and the source electrode
Pattern 36 and drain pattern 37 are electrically connected by the semiconductor layer 38.In the present invention, the specific structure of TFT layer can be
The thin film transistor (TFT) of existing other structures, this is no longer going to repeat them.
First and second described luminescent layer 30,50 includes several luminescent devices, and each luminescent device includes first electrode
31, luminescent layer 33 and second electrode 32, the luminescent layer 33 are arranged between the first electrode 31 and the second electrode 32,
Wherein, the first electrode 31 is anode, and the second electrode 32 is cathode, the first electricity of two adjacent luminescent devices
Pixel confining layer 34 is equipped between pole 21 and luminescent layer 33, to limit the shape of the first electrode 31 and the luminescent layer 33.
In the present embodiment, the luminescent device preferably pushes up light emitting-type OLED device, in other embodiments, the luminescent device
It can be bottom light emitting-type OLED device, or may be the combination of top light emitting-type OLED device and bottom light emitting-type OLED device.Tool
Body, the double-side display device is double-sided OLED display, or other kinds of display with double faces.
Fig. 4 a to Fig. 4 d is please referred to, is the structural schematic diagram of double-side display device connection control system of the invention.Wherein,
The first display surface described in Fig. 4 a and Fig. 4 b and second display surface share pad area 80, and the pad area 80 is arranged in institute
The top for stating the right side of substrate 10 for being electrically connected first luminescent layer 30 and second luminescent layer 50, and passes through this
Pad connects integrated circuit and flexible circuit board these control systems.In other embodiments, the pad area 80 can also basis
Need to be arranged in the other positions of the substrate 10.The first display surface described in Fig. 4 c and Fig. 4 d and second display surface point
Pad area 80 that Ju You be not different, first and second pad area of first and second display surface are separately positioned on the substrate
10 left and right sides, wherein first pad area 80 is for being electrically connected first luminescent layer 30, second pad area
80 for being electrically connected second luminescent layer 50, and therefore, first and second described display surface can pass through different integrated electricity
Road, control system, signal input part shown, wherein the row driving cabling of first and second display surface, data line with
And other signal leads are respectively connected to corresponding pad area.Wherein, when first display surface and second display
When resolution ratio, pixel size, the display picture in face etc. are identical, first and second described display surface shares pad area, to reach
The purpose that double-side display device shares pad area, integrated circuit, control system and signal input apparatus is stated, being conducive to cost reduces,
Simultaneously convenient for the lightening of promotion display.
Please refer to Fig. 5 a to Fig. 5 d, wherein Fig. 5 a and Fig. 5 b corresponding diagram 4a and 4b, Fig. 5 c and Fig. 5 d corresponding diagram 4c and 4d,
The row driving cabling, the second display surface row driving cabling, the first display face data of the first display surface are contained in Fig. 5 a and Fig. 5 b
Line, the second display surface data line are connected to the same pad area 80, while can also contain public electrode (second electrode) etc.
Other must signal cabling.First display surface described in Fig. 5 c and Fig. 5 d has different pad areas from second display surface
80, therefore first and second described display surface can be shown by different driving elements, control system and signal input part
Show, wherein row driving cabling, data line and other signal leads of first display surface and second display surface connect respectively
It is connected to different pad areas.In the present embodiment, row driving cabling row driving at no integrated gate drive circuitry (no GOA) is walked
Line may include the scan line of every row, and when having integrated gate drive circuitry (having GOA), row driving cabling may include GOA electricity
Each control signal lead on road.Since first and second display surface does not share first electrode or believes comprising second electrode etc.
Number, thus the driving of first and second display surface be it is irrelevant, first and second display surface can use different drivings
The mode picture different with display.
The substrate 10 can be thin glass, metal, plastics etc., and the substrate 10 is also possible to the substrate of full flexible
(mixed structures of the organic matters such as PI and organic matter and inorganic matter composition)；Such as TFT layer and luminescent layer contain TFT device,
Such as TFT control switch and luminescent material etc., wherein TFT control switch can be amorphous silicon or low temperature monocrystalline silicon technology is made,
The structure of TFT control switch can be the structures such as bottom gate type or top gate type, and luminescent material can be various applicable organic materials
Or inorganic material；Encapsulated layer can be thin-film package and be also possible to outer cover encapsulation, even the combination envelope of film and outer cover encapsulation
Assembling structure；The double-side display device further comprises other each display units, such as the double-side display device further comprises
Glue-line is encapsulated, encapsulation glue-line linker bottom and encapsulation outer cover stop steam to enter；Pad area 80 contain scan line, data line,
The input terminal of common wire equisignal line, the present invention in data line distribution illustrate position, the cabling mode of pad area, pad area
It may include the signal input part of multiple and different types.
Specifically, the length of first display surface and the length of second display surface are identical or different；Described first
The area of display surface and the area of second display surface are identical or different；The resolution ratio of first display surface and described second
The resolution ratio of display surface is identical or different.The pad area can not be one but one column it is multiple.In other embodiments
The area of first and second display surface can not be identical, such as the first display surface some regions do not have luminescent layer but presence
TFT switch and interlock circuit connect and control the display pixel of the second display surface of backside of substrate.In the present embodiment, substrate is
It is made of the material of via hole easy to form, the preferably described substrate 10 is polyimides (PI), polycarbonate (PC), polyether sulfone
(PES), polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polyarylate (PAR) or glass
The polymer materials such as glass fibre reinforced plastics (FRP) form flexible substrates.In other embodiments, the material of the substrate can also
To be the materials such as ceramic, thicker glass.
Fig. 6 and 7 is please referred to, is the structural schematic diagram of the second embodiment of double-side display device of the invention.It is described two-sided
It is in place of the second embodiment of display device and the difference of above-mentioned first embodiment: several TFT devices is set on the TFT layer 20
Part is arranged several first luminescent devices on first luminescent layer, several second luminescent devices is arranged on second luminescent layer,
Every TFT device is correspondingly connected with one first luminescent device and one second luminescent device.
Wherein, the drain electrode of the TFT device by via hole 70 in the substrate 10 and within conductive materials be connected to
Second luminescent layer 50, therefore TFT device on the TFT layer 20 and circuit control first and second display surface simultaneously
First and second luminescent layer 30,50, wherein the first electrode in the luminescent layer is preferably anode, the first electrode can also
Think cathode, the TFT device in the TFT layer 20 drain electrode connection the second display surface luminescent layer pixel electrode via hole and
The via hole for connecting the pixel electrode of the luminescent layer of first display surface can not be in same position.In the double-side display device
It also include public electrode (such as cathode) and other electrodes, the second display surface in these electrodes in addition to pixel electrode
Luminescent device may not be needed each luminescent device and connected from first display surface by via hole, therefore the double-sided display
At least there is the luminescent device that a via hole connects the second display surface in each luminescent device of device, the second display surface at least exists
One via hole connection public electrode and other signal electrodes.When public electrode etc., other signal electrodes are not that the second display surface is every
When a luminescent device requires to connect the first display surface counter electrode, the via hole link position of these electrodes can be located at portion
Distribute in optical device, can also be located at except viewing area (area AA).
In the present embodiment, first and second described display surface display pixel size having the same, preferably identical display
When area the resolution ratio of the second display pixel and pixel size not less than first display surface resolution ratio and pixel size (
The second display surface pixel size is greater than the pixel size of first display surface in other embodiments).In other embodiments, institute
The area for stating first and second display surface can not be identical, such as some regions of first display surface do not have luminescent layer but deposit
In the luminescent device for the second display surface that TFT switch and related short circuit connect and control the backside of substrate.
In the present embodiment, first and second described display surface resolution ratio is identical, while the resolution ratio of the second display surface can be with
It is equal to less than the number of lines or/and column number pixel of the resolution ratio of first display surface, such as second display surface described
1/2,1/3,1/4 etc. of the number of lines of first display surface or/and column number pixel, second display surface is also able to achieve picture at this time
The normal display in face, first display surface are expert at or/and arrange the pixel electrode of one of pixel in every 2,3,4 pixels
It is connect with the pixel electrode of the second display surface pixel, so that each pixel of the second display surface is by the first display surface
TFT switch and interlock circuit control.In this embodiment by the luminescent device of TFT layer drain electrode so that first and second
Display surface is connected, in other embodiments can also by pixel electrode (first electrode, can for anode, or yin
Pole) be connected with the second display surface, i.e., connection relationship can be the first display surface-drain electrode connection the second display surface-drain electrode, first
Display surface-drain electrode connection the second display surface-pixel electrode, the first display surface-pixel electrode connection the second display surface-drain electrode, the
One display surface-pixel electrode connects the second display surface-pixel electrode, in a word first and second display surface picture element signal (first electricity
The signal of pole) it is connected.
Referring to Fig. 8, being the schematic diagram of double-side display device connection control system of the invention.In the present embodiment, institute
It states the first display surface and second display surface shares pad area 80, the upper of 10 right side of substrate is arranged in the pad area 80
Side.In other embodiments, the other positions in the substrate 10 can also be set as needed in the pad.
Fig. 9 and Figure 10 is please referred to, is the structural schematic diagram of the 3rd embodiment of double-side display device of the invention.It is described double
Be in place of the 3rd embodiment of flat-panel display device and the difference of above-described embodiment: the substrate 10 includes first be oppositely arranged
Substrate 11 and the second substrate 12, the TFT layer 20, first luminescent layer 30 and first encapsulated layer 40 are cascading
Above first substrate 11, second luminescent layer 50 and second encapsulated layer 60 are cascading described second
12 lower section of substrate, is electrically connected between first substrate 11 and second substrate 12 by conducting resinl 13, wherein several mistakes
Hole 70 is through first substrate 11, the conducting resinl 13 and second substrate 12 and by the TFT layer 20 and described first
Luminescent layer 30 and second luminescent layer 50 are electrically connected.
Several TFT devices are set on the TFT layer 20, several first luminescent devices, institute are set on first luminescent layer
It states and several second luminescent devices is set on the second luminescent layer, every TFT device is correspondingly connected with one first luminescent device and one
Second luminescent device.
The drain electrode of TFT device on the TFT layer 20 by via hole 70 in first and second described substrate 11,12 and
Within anisotropic conductive adhesive paste 13 between conductive materials and first and second described substrate 11,12 be connected to second luminescent layer
50, therefore the TFT of the first face display surface and circuit control the pixel electrode of first and second display surface, the pixel simultaneously
Electrode is preferably that first electrode is preferably anode, and first electrode may be cathode.Conductive materials in the via hole 70 can be with
Ag glue can also be welded by scolding tin and be allowed to connected, is also possible to the metal to be formed (such as Al/Mo etc.), and described first and the
Electrode between two substrates can be metal and be formed, and be also possible to conductive materials, scolding tin retains to be formed.The leakage of the TFT device
The via hole that pole connects the pixel electrode of the first display surface of through-hole and connection of the second display surface pixel electrode can not be in same position
It sets.In addition to pixel electrode in the double-side display device, also include public electrode (such as cathode) and other electrodes,
The pixel of the second display surface may not be needed each pixel and be connect with the first display surface by via hole in these electrodes, therefore two-sided
At least there is the pixel electrode that a via hole connects the second display surface, the second display surface display unit in each luminescent device of display device
At least there are a via hole connection public electrode and other signal electrodes in position.When public electrode etc., other signal electrodes are not
When each pixel of two display surfaces requires the first display surface counter electrode of connection, the via hole link position of these electrodes can be located at
In partial pixel, it can also be located at except viewing area (area AA).In present embodiment, preferably first in the double-side display device
And when the second display surface display pixel size, preferably same area having the same second display surface pixel resolution ratio and pixel
Not less than the resolution ratio and pixel size of the first display surface, (the second display surface pixel size is greater than the to size in other embodiments
One display surface pixel size).In other embodiments, the area of first and second display surface can not be identical, such as first aobvious
Show that face some regions do not have luminescent layer but there are TFT switch and interlock circuit connection and the display pixels of the second display surface of control.
In the present embodiment, the resolution ratio of first and second display surface is identical, while point that the second display surface is shown
The resolution ratio that resolution can be shown less than the first display surface, such as the number of lines or/and column number pixel of the second display surface are equal to
1/2,1/3,1/4 etc. of first display surface, the second display surface is also able to achieve the normal display of picture at this time, at this time the first display surface
In be expert at or/and arrange in every 2,3,4 pixels the pixel of the pixel electrode of one of pixel and the second display surface pixel electricity
Pole connection, so that the second each pixel of face display pixel is controlled by the first display surface TFT switch and interlock circuit.
It is the drain electrode by the TFT device of TFT layer in the present embodiment so that first and second display surface is connected, at other
It can also be connected by pixel electrode (first electrode can be anode or cathode) with the second display surface in embodiment
Logical, i.e., connection relationship can be the first display surface-drain electrode connection the second display surface-drain electrode, the first display surface-drain electrode connection second
Display surface-pixel electrode, the first display surface-pixel electrode connection the second display surface-drain electrode, the first display surface-pixel electrode connect
The second display surface-pixel electrode is connect, first and second display surface picture element signal (signal of first electrode) is connected in a word.
Figure 11 is please referred to, in the present embodiment, first and second described display surface shares pad area 80, the pad area 80
The top of first substrate 11 is set, for connecting first luminescent layer 30 and second luminescent layer 50 and by soft
Property circuit board connect control system.In embodiment in fact, the pad area 80 can also be set as needed described first or
The other positions of second substrate 11,12.
Figure 12 a and Figure 12 b and Figure 13 a and Figure 13 b is please referred to, is the fourth embodiment of double-side display device of the invention
Structural schematic diagram.It is in place of the fourth embodiment of the double-side display device and the difference of above-described embodiment: the substrate 10
Including the first substrate and the second substrate 11,12 being oppositely arranged, the TFT layer 20, first luminescent layer 30 and described first
Encapsulated layer 40 is cascading above first substrate 11, second luminescent layer 50 and second encapsulated layer 60 according to
It is secondary to be stacked below second substrate 12, pass through conducting resinl 13 between first substrate 11 and second substrate 12
It is electrically connected, wherein several via holes 70 are through first substrate 11, the conducting resinl 13 and second substrate 12 and by institute
It states TFT layer 20 and first luminescent layer 30 and second luminescent layer 50 is electrically connected.
Several first TFT devices 21 and several 2nd TFT devices 22, first luminescent layer are set on the TFT layer 20
Several first luminescent devices are set on 30, several second luminescent devices are set on second luminescent layer 50, described every one first
TFT device 21 is correspondingly connected with one first luminescent device, and every one second TFT device 22 is correspondingly connected with one second luminescent device.
The public electrode of first and second display surface can be connected or be not attached to, by different between first and second substrate
The conduction glue connection of side's property.The TFT and its correlation of the first display surface of control are contained below the luminescent layer of first display surface
Circuit also contains the TFT and its interlock circuit of the second display surface of control.The drain electrode of the 2nd TFT device passes through via hole simultaneously
Middle conductive materials are connected to the pixel electrode of the second display surface.Conductive materials in via hole 70 can also pass through weldering with Ag glue
Tin welding is allowed to connected, is also possible to the metal to be formed (such as Al/Mo etc.).Electrode between first and second substrate can be
Metal is formed, and is also possible to conductive materials, scolding tin retains to be formed.The difference of Figure 12 a and Figure 12 b is: Figure 12 a illustrates first
And second display surface resolution ratio it is identical, Figure 12 b illustrates the resolution ratio of the first display surface of resolution ratio of the second display surface more
It is high.
Figure 14 a and Figure 14 b is please referred to, wherein the viewing area pad area having the same of first and second display surface
80, row driving cabling, data line and other signal leads of first and second display surface are connected to the pad area 80, therefore
First and second display surface can be shown by identical integral control circuit, control system and signal input part.Wherein,
The right side of the top of first substrate 11 is arranged in the pad area 80, and in other embodiments, the pad 80 can also root
According to the other positions for needing to be arranged in first substrate 11 or the second substrate 12.The pad area 80 connects described first and shines
Layer 30 and second luminescent layer 40 and and integrated circuit and flexible circuit board these control systems are connected by this pad.It please join
Figure 14 c and Figure 14 d is read, wherein the viewing area of first and second display surface has different pad areas 80, first and second
Row driving cabling, data line and other signal leads of display surface are respectively connected to different pad areas, therefore first and second
Display surface can be shown by different integral control circuits, control system and signal input part.Wherein, described first is aobvious
Second pad area 80 of the first pad area 80 and second display surface that show face is separately positioned on 11 top of the first substrate
Left and right ends, in other embodiments, first and second described pad 80 can also be set as needed in first substrate
The other positions of 11 or described second substrates 12.First pad area 80 connects the first device luminescent layer 30 and by soft
Property circuit board connect control system, second pad area 80 connects the second device luminescent layer 50 and and connected by this pad
Connect integrated circuit and flexible circuit board these control systems.
Figure 15 a and Figure 15 b corresponding diagram 14a and Figure 14 b, Figure 15 c and Figure 15 d corresponding diagram 14c and Figure 14 d.Wherein, Figure 15 a
And contained in Figure 15 b the first display surface row driving cabling, the second display surface row driving cabling, the first display surface data line,
Second display surface data line is connected to the same pad area 80, at the same public electrode (second electrode) can also be contained etc. other
The cabling of necessary signal.First display surface described in Figure 15 c and Figure 15 d has different pad areas from second display surface
80, therefore first and second described display surface can be shown by different driving elements, control system and signal input part
Show, wherein row driving cabling, data line and other signal leads of first display surface and second display surface connect respectively
It is connected to different pad areas.In the present embodiment, the row drives cabling, the row at no integrated gate drive circuitry (no GOA)
Driving cabling may include the scan line of every row, and when having integrated gate drive circuitry (having GOA), row driving cabling be can wrap
Include each control signal lead of GOA circuit.Since first and second display surface does not share first electrode or comprising the second electricity
Extremely equal signals, thus the driving of first and second display surface be it is irrelevant, first and second display surface can be using difference
The driving method picture different with display.
In the present embodiment, the length of first and second display surface, area can be identical or different, such as first aobvious
Show that face some regions do not have luminescent layer but there are the second displays of TFT switch and interlock circuit connection and the second backside of substrate of control
The display pixel in face.The resolution ratio of first and second display surface can be identical or different, the double-side display device
Pad area can not be one but one column it is multiple.
Wherein first and second substrate is made of the material of via hole easy to form, for example, thin glass, transparent metal with
And formed with any appropriate insulating materials flexible, it can be by such as polyimides (PI), polycarbonate (PC), polyether sulfone
(PES), polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polyarylate (PAR) or glass
The polymer materials such as glass fibre reinforced plastics (FRP) are formed.In other embodiments, first and second substrate is also possible to make pottery
The materials such as porcelain, thicker glass.
Double-side display device of the present invention on the TFT layer of the first display surface by being arranged while controlling first luminescent layer
And second luminescent layer TFT device or the TFT device for controlling first luminescent layer and control are respectively set on the TFT layer
The TFT device of second luminescent layer is made, and the second luminescent layer is connected to TFT layer by the way that via hole is arranged on the substrate,
The area utilization for improving first and second display surface, and the shared pad by the way that first and second display surface is arranged are realized with this
Area, so that the integrated circuit of double-side display device, control system and signal input apparatus share, so that cost reduces and is convenient for
Display device it is lightening.
Mode the above is only the implementation of the present invention is not intended to limit the scope of the invention, all to utilize this
Equivalent structure or equivalent flow shift made by description of the invention and accompanying drawing content, it is relevant to be applied directly or indirectly in other
Technical field is included within the scope of the present invention.
Claims (9)
1. a kind of double-side display device, which is characterized in that the double-side display device includes substrate, is cascading described
TFT layer, the first luminescent layer and the first encapsulated layer above substrate, the second luminescent layer being cascading below the substrate
And second encapsulated layer, wherein several via holes are through the substrate and by the TFT layer and first luminescent layer and described second
Luminescent layer is electrically connected by the via hole；
The substrate includes the first substrate and the second substrate being oppositely arranged, the TFT layer, first luminescent layer and described
One encapsulated layer is cascading above first substrate, and second luminescent layer and second encapsulated layer stack gradually
It is arranged below second substrate, is electrically connected between first substrate and second substrate by anisotropic conductive adhesive paste
It connects, wherein several via holes are through first substrate, the anisotropic conductive adhesive paste and second substrate and by the TFT layer
It is electrically connected with first luminescent layer and second luminescent layer.
2. double-side display device according to claim 1, which is characterized in that several first TFT devices are arranged on the TFT layer
Part and several 2nd TFT devices are arranged several first luminescent devices on first luminescent layer, are arranged on second luminescent layer
Several second luminescent devices, every one first TFT device are correspondingly connected with one first luminescent device, and every one second TFT device is corresponding to be connected
Connect one second luminescent device.
3. double-side display device according to claim 1, which is characterized in that several TFT devices are set on the TFT layer,
Several first luminescent devices are set on first luminescent layer, several second luminescent devices are set on second luminescent layer, often
One TFT device is correspondingly connected with one first luminescent device and one second luminescent device.
4. double-side display device according to claim 1, which is characterized in that the substrate is equipped with a pad area, institute
It is uncovered to state pad area, the pad area is electrically connected first luminescent layer and second luminescent layer and passes through flexible electrical
Road plate connects control system.
5. double-side display device according to claim 1, which is characterized in that the substrate is equipped with first and second pad
Area, first and second described pad area is uncovered, and first pad area is electrically connected first luminescent layer and by soft
Property circuit board connect control system, second pad area is electrically connected second luminescent layer and by flexible circuit board connection
Control system.
6. double-side display device according to claim 1, which is characterized in that first substrate is equipped with a pad
Area, the pad area is uncovered, and the pad area is electrically connected first luminescent layer and second luminescent layer and passes through
Flexible circuit board connects control system.
7. double-side display device according to claim 1, which is characterized in that first substrate is equipped with first and second
Pad area, first and second described pad area is uncovered, and first pad area is electrically connected first luminescent layer and leads to
Flexible circuit board connection control system is crossed, second pad area is electrically connected second luminescent layer and passes through flexible circuit board
Connect control system.
8. double-side display device according to claim 1, which is characterized in that the substrate or first and second described substrate
For glass, transparent metal, polyimides (PI), polycarbonate (PC), polyether sulfone (PES), polyethylene terephthalate
(PET), in polyethylene naphthalate (PEN), polyarylate (PAR) fiberglass reinforced plastics (FRP) or ceramics
One or more of combinations.
9. double-side display device according to claim 1, which is characterized in that the TFT layer includes buffer layer, is set to institute
It states the semiconductor layer of buffer-layer surface, the gate insulating layer for being covered in the semiconductor layer surface, be set to the gate insulator
Gate pattern on layer, is set on the flatness layer and is spaced each other the flatness layer for being covered in the gate insulator layer surface
Source electrode pattern and drain pattern, and the source electrode pattern and drain pattern are electrically connected by the semiconductor layer；Described
One and second luminescent device include first electrode, luminescent layer and second electrode, the luminescent layer is arranged in the first electrode
Between the second electrode, wherein the first electrode is anode, and the second electrode is cathode, described in adjacent two
Pixel confining layer is equipped between the first electrode and luminescent layer of luminescent device, to limit the first electrode and the luminescent layer
Shape.
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| US10613653B2 (en) | 2017-04-27 | 2020-04-07 | Wuhan China Star Optoelectronics Technology Co., Ltd | Dual-sided display device |
| CN107016933B (en) * | 2017-04-27 | 2019-08-20 | 武汉华星光电技术有限公司 | Display with double faces |
| CN107680992B (en) * | 2017-10-10 | 2020-03-17 | 京东方科技集团股份有限公司 | Display device, manufacturing method thereof and repairing method of display device |
| CN107833904B (en) * | 2017-10-30 | 2020-03-31 | 深圳市华星光电半导体显示技术有限公司 | Double-sided OLED display panel and manufacturing method thereof |
| CN109461744B (en) * | 2018-11-06 | 2021-06-15 | 上海天马微电子有限公司 | Double-sided display panel, manufacturing method and display device |
| WO2021120112A1 (en) * | 2019-12-19 | 2021-06-24 | 重庆康佳光电技术研究院有限公司 | Double-sided tft panel, fabrication method therefor, and display device |
| CN112038383A (en) * | 2020-09-14 | 2020-12-04 | 京东方科技集团股份有限公司 | Display panel, preparation method and display device |
| CN113066836A (en) * | 2021-03-19 | 2021-07-02 | 京东方科技集团股份有限公司 | Display panel and display device |
| CN113299704B (en) * | 2021-05-10 | 2022-11-08 | 武汉华星光电技术有限公司 | Display panel and preparation method thereof |
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