Invention content
Based on this, it is necessary to provide a kind of electrophoretic display panel and fold out display that screen frame is relatively narrow.
The present invention provides a kind of electrophoretic display panel, including stack gradually the transparent conductive film of connection, electrophoretic display layer andBottom plate is driven, multiple sub-pixel driving electrodes are provided on the driving bottom plate and is set to below multiple sub-pixel driving electrodesConducting wire, the sub-pixel driving electrodes and the conducting wire are set to the lower section of the electrophoretic display layer, by the electrophoresis showedLayer covering, the multiple sub-pixel driving electrodes are connect by conducting wire with driving chip, and the conducting wire is used to be electrophoretic display panelScanning signal and picture signal are provided.
Preferably, the driving chip is set on the driving bottom plate, and the driving chip is located at the electrophoresis showedThe side of layer, the driving bottom plate are hard floor or flexible plate, it is preferable that the conducting wire includes scan line and signal wire.
Preferably, include the first flexible membrane and the second flexible membrane of multiple electrophoretic display panels, interconnection, the multiple electricitySwimming display screen is held between first flexible membrane and the second flexible membrane, and first flexible membrane and the second flexible membrane are at leastOne is transparent, and fold line is formed between adjacent electrophoretic display panel, and the electrophoretic display panel can be folded along fold line.
Preferably, the fold line includes main fold line and time fold line, and the multiple electrophoretic display panel is in two row multiple rowsIt is layed on the first flexible membrane, forms the main fold line between two row electrophoretic display panels, between the electrophoretic display panel of adjacent columnThe secondary fold line is formed, each electrophoretic display panel outer side edges shape opposite with the main fold line and/or secondary fold lineAt there is connection circuit.
Preferably, except by the connection circuit connect in addition to, adjacent electrophoretic display panel along the main fold line and timeThe region of fold line is not electrically connected.
Preferably, the connection circuit includes the first connection circuit and the second connection circuit, each electrophoretic display panelThe outer side edges opposite with the main fold line are each formed with the first connection circuit, often the adjacent electrophoretic display panel of row electrophoretic display panelBetween first connection circuit interconnect.
Two electrophoretic display panels of the row head and/or end of line that are preferably located at the fold out display are rolled over described timeThe second connection circuit is formed in the opposite outer side edges of superimposing thread.
Two electrophoretic display panels of the row head and/or end of line that are preferably located at the fold out display are rolled over described timeThe the second connection circuit formed in the opposite outer side edges of superimposing thread interconnects, it is preferable that the first connection circuit and described theTwo connection circuit connections.
Preferably, the driving chip is set on the connection circuit.
Preferably, first flexible membrane and the second flexible membrane are formed with folding trace along the fold line.
Electrophoretic display panel provided by the invention has relatively narrow screen frame.
Specific implementation mode
Technical solution of the present invention is described in further detail in the following with reference to the drawings and specific embodiments, so that this fieldTechnical staff can be better understood from the present invention and can be practiced, but illustrated embodiment is not as a limitation of the invention.
Referring to figs. 1 to Fig. 8, the embodiment of the present invention provides a kind of electrophoretic display panel 3, including stacks gradually the transparent of connection and leadConductive film, electrophoretic display layer and driving bottom plate, driving bottom plate are hard floor or flexible plate.
It is provided with multiple sub-pixel driving electrodes on driving bottom plate and is set to leading below multiple sub-pixel driving electrodesLine, sub-pixel driving electrodes and conducting wire are set to the lower section of electrophoretic display layer, are covered by electrophoretic display layer, multiple sub-pixel drivingsElectrode is connect by the conducting wire below sub-pixel driving electrodes with driving chip 105, and driving chip 105 can be set to electricityIt swims in display screen 3, may also set up in outside electrophoretic display panel 3.Conducting wire includes scan line 103 and signal wire 104, for being shown for electrophoresisDisplay screen provides scanning signal and picture signal.Transparent conductive film and driving bottom plate are used to apply telecommunications at electrophoretic display layer both endsNumber.
The preparation method of the driving bottom plate of the electrophoretic display panel 3 of the present embodiment is：TFT processing procedures are first passed through to prepare on substrateThen scan line 103 prepares insulating layer in scan line 103, then prepare signal wire 104 on the insulating layer, insulating layer canKeep scan line 103 and signal wire 104 mutually isolated, each other without interruption.Then again on the signal wire 104 being preparedSide makes multiple sub-pixel driving electrodes again by TFT processing procedures.Conducting wire (including scan line 103 and signal wire 104) is set toBelow sub-pixel driving electrodes, covered by electrophoretic display layer.101 size of frame can be largely reduced, is had preferable aobviousShow effect.
In a preferred embodiment, driving chip 105 is set on driving bottom plate, and driving chip 105 is located at electrophoretic display layerSide.
In the finished product of liquid crystal display (LCD), organic luminous semiconductor (OLED) and the field electrophoresis showed (EPD), meshIt is preceding to be all utilized in the mode connected up on screen (with reference to figure 1 and Fig. 2), it is difficult to effectively to reduce the width of display screen frame 101.EspeciallyIt is in liquid crystal display (LCD), the field organic luminous semiconductor (OLED), and circuit is more complicated, considers signal interference, systemThe influence of the factors such as standby technique and yield, there are no the modes connected up below display screen in finished product at present.Electrophoresis showed(EPD) application is later, and the mode of wiring is also all equally to be difficult to reduce display screen frame using wire laying mode on traditional screen101 thickness.
Applicants have discovered that in electrophoresis showed field, scan line 103 and signal wire 104 are distributed in below display screen(with reference to figure 3), for the display of electrophoretic display panel 3, there is no too much influences, this is because electrophoresis showed wants signal interferenceAsk low.And because the pixel circuit that electrophoresis showed requires is simple, this wire laying mode to the yield of electrophoresis showed product not yetHave too big influence.And shield 101 size of frame that lower wiring can substantially reduce electrophoretic display panel 3, display effect is more preferable.For narrow frame 101 increasingly from the point of view of by the favorite market demand of consumer, the present invention has larger economic benefit at present.
With reference to figure 4 to Fig. 8, the present invention also provides a kind of fold out display, including multiple electrophoretic display panels 3, interconnectionThe first flexible membrane 7 and the second flexible membrane 8, multiple electrophoretic display panels 3 are held between the first flexible membrane 7 and the second flexible membrane 8,At least one of first flexible membrane 7 and the second flexible membrane 8 is transparent, and fold line, electrophoresis showed are formed between adjacent electrophoretic display panel 3Screen 3 can be folded along fold line.Multiple electrophoretic display panels are realized by covering one layer of flexible membrane in about 3 electrophoretic display panel3 combination, not only operation are easy, and simple in structure, manufacturing cost is low, and folding effect is good.And electricity provided in this embodimentDisplay screen 3 of swimming has smaller screen frame 101, and display area is larger, and multiple electrophoretic display panels 3 form fold out display, noIt is only capable of with folding effect, and there is better tiled display effect.In a preferred embodiment, the first flexible membrane 7 and secondThe materials such as polyimides (PI), polyethylene terephthalate (PET), makrolon (PC) can be selected in flexible membrane 8, have compared withGood water proof and dust proof effect, can further protect fold out display.
Join Fig. 4 to Fig. 8, in a preferred embodiment, fold line includes main fold line 1 and time fold line 2, multiple electrophoresis showedsScreen 3 is layed in two row multiple rows on the first flexible membrane 7, and main fold line 1, the electricity of adjacent column are formed between two row electrophoretic display panels 3Time fold line 2, the outside opposite with main fold line 1 and/or secondary fold line 2 of each electrophoretic display panel 3 are formed between swimming display screen 3While being formed with connection circuit 4.Connection circuit 4 is flexible PCB FPC (Flexible Printed Circuit), can be shown relativelyDisplay screen is folded, and in use, can will be connected display screen of the circuit 4 with respect to display screen 3 and be folded round about, noInfluence the appearance of display screen.The mode that chip bonding can be used in connection circuit 4 is fixed on 3 side of electrophoretic display panel, for electricitySwimming display screen 3 is driven.Circuit 4 is connected in the outside of fold out display, will not be influenced by folding, it is aobvious to improve foldingShow the service life of device.Electrophoretic display panel 3 is easier to realize that each electrophoretic display panel 3 is equipped with connection circuit in the setting of two row multiple rows4.Each electrophoretic display panel 3 has independently formed connection circuit 4 so that individually electrophoretic display panel 3 can independently be shown, also can be moreThe cooperation of a electrophoretic display panel 3 is shown that display effect is more preferable, it is easier to realize.
In a preferred embodiment, driving chip 105 is set on connection circuit 4.Driving chip 105 can be arranged in electrophoresisOn display screen 3, COF techniques can also be used, driving chip 105 is set on connection circuit 4.
In a preferred embodiment, in addition to by connecting the connection of circuit 4, adjacent electrophoretic display panel 3 is along 1 He of main fold lineThe region of secondary fold line 2 is not electrically connected.Namely adjacent electrophoretic display panel 3 can be by the connection that is arranged on electrophoretic display panel 3Circuit 4 is attached the connection between circuit 4, but adjacent electrophoretic display panel 3 is along the area of main fold line 1 and time fold line 2Domain does not have circuit connection, that is, main fold line 1 and time 2 region of fold line are electric partition state, and no current passes through.So that foldingDisplay cabling is simple, and preparation is more prone to, and because of adjacent electrophoretic display panel 3 along main fold line 1 and time fold line 2Region is not electrically connected, and can be had if will not influencing the display life of fold out display fold out display repeatedly foldsEffect reduces the thickness for folding trace, and folding effect is more preferable.
With reference to figure 4, Fig. 5 and Fig. 6, in a preferred embodiment, connection circuit 4 includes that the first connection circuit 41 and second connectsCircuit 42, the outer side edges opposite with main fold line 1 of each electrophoretic display panel 3 are each formed with first and connect circuit 41, often row electrophoresisThe first connection circuit 41 between the adjacent electrophoretic display panel 3 of display screen 3 interconnects.3 liang of row multiple rows of electrophoretic display panel are setSet, it is easier to ensure to realize on each electrophoretic display panel 3 be formed with connection circuit 4, and first connection circuit 41 be arrangedIn the opposite outer side edges of main fold line 1, it can ensure that connecting circuit 4 will not be damaged because of folding.Often row electrophoresis showedThe first connection circuit 41 between the adjacent electrophoretic display panel 3 of screen 3 interconnects.At this time in the main fold line 1 of fold out displayOpposite both sides are equipped with connecting interface 51, are connect (with reference to figure 6) with mainboard 20 by connecting interface 51, can realize external electricalRoad can drive the electrophoretic display panel 3 in display.
With reference to figure 7, in a preferred embodiment, it is located at the row head of fold out display and/or two electrophoretic display panels 3 of end of lineIt is formed with second in the outer side edges opposite with secondary fold line 2 and connect circuit 42.In further preferred embodiments, it is located at and foldsThe second company that the row head of display and/or two electrophoretic display panels 3 of end of line are formed in the outer side edges opposite with secondary fold line 2Connect the interconnection of circuit 42.In still more preferably embodiment, the first connection circuit 41 connect circuit 42 with second and connects.ExampleIf the second connection circuit 42 is mutual, the first connection circuit 41 is mutual, and the second connection circuit 42 connect circuit with first41 can be attached or other modes by flexible print circuit board 5 (Printed Circuit Board Assembly)It is attached.Namely all connection circuits (including the first connection circuit 41 and second connects circuit 42) can be achieved to go here and there successivelyConnection.So that fold out display only needs that a connecting interface 51 is arranged, mainboard 20 can be realized to all aobvious of fold out displayDisplay screen 3 is driven.Structure is simpler so that fold out display is lighter after folding.
In a preferred embodiment, adjacent electrophoretic display panel 3 is in the gap for being formed with 1-15mm along the region of fold line.NeitherIt can influence display effect, moreover it is possible to which there is preferable folding effect.
In a preferred embodiment, the first flexible membrane 7 and the second flexible membrane 8 are formed with folding trace along fold line.Electrophoresis showedScreen 3 is folded along folding trace and is more easily realized, folding effect is more preferable.
With reference to figure 8, the embodiment of the present invention also provides a kind of preparation method of fold out display, includes the following steps：
It is laid with the first flexible membrane 7；
Multiple electrophoretic display panels 3 are laid on the first flexible membrane 7, multiple electrophoretic display panels 3 are layed in two row multiple rowsOn one flexible membrane 7, main fold line 1 is formed between two row electrophoretic display panels 3, forms time folding between the electrophoretic display panel 3 of adjacent columnSuperimposing thread 2.Each outer side edges opposite with main fold line 1 and/or secondary fold line 2 of electrophoretic display panel 3, which are formed with, connect circuit 4.EvenIt connects circuit 4 mode of chip bonding can be used and be fixed on 3 side of electrophoretic display panel, for being driven to electrophoretic display panel 3.EvenCircuit 4 is connect in the outside of fold out display, will not be influenced by folding, improve the service life of fold out display.
The electrophoretic display panel 3 being laid with herein can make electrophoretic display panel 3 on the first flexible membrane 7, in the present embodimentElectrophoretic display panel 3 be electrophoresis electrophoretic display panel 3, then the specific steps are：Driving bottom plate is formed on the first flexible membrane 7, moves bottomPlate is that hard drives bottom plate and/or flexible drive bottom plate, driving bottom plate to be equipped with driving electrodes, and electrophoresis is coated on driving bottom plateIt shows liquid, obtains electrophoretic display layer, conductive film is set on electrophoretic display layer, conductive film and driving electrodes are used in electrophoresisDisplay layer both ends apply electric signal, obtain display screen 3.It repeats this step and multiple display screens 3 can be obtained.Directly in the first flexible membraneCoating forms display screen 3 on 7, it is easier to prepare flexible display screen, flexible effect is more preferable, the folding effect of fold out display also compared withIt is good.
It also can be by the way that directly by the electrophoretic display panel 3 prepared, (can swim display screen 3 or hard electricity for flexible electricalSwimming display screen 3) arrangement be positioned on the first flexible membrane 7.Electrophoretic display panel 3 has first been prepared separately, has been more prone to operate, also canIt is easier to the step of realization prepares waterproof layer and sealing, preparation process is simpler easy to implement, the effect of water proof and dust proof also phaseTo preferable.
It is laid with the second flexible membrane 8 on multiple electrophoretic display panels 3, multiple electrophoretic display panels 3 is made to be held on the first flexible membrane 7It is between the second flexible membrane 8 and fixed.In the present embodiment, display screen 3 can be formed on the first flexible membrane 7, then to cover second softProperty film 8, can also form display screen 3, then cover the first flexible membrane 7 on the second flexible membrane 8.As long as can ensure display screen 3Show flexible membrane (first flexible membrane 7 or second flexible membrane 8) of the screen towards transparent setting.
Electrophoretic display panel provided in an embodiment of the present invention has relatively narrow frame.
It these are only the preferred embodiment of the present invention, be not intended to limit the scope of the invention, it is every to utilize this hairEquivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skillsArt field, is included within the scope of the present invention.