CN108831308A - A kind of foldable display panel and foldable display device - Google Patents
A kind of foldable display panel and foldable display device Download PDFInfo
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- CN108831308A CN108831308A CN201810679281.6A CN201810679281A CN108831308A CN 108831308 A CN108831308 A CN 108831308A CN 201810679281 A CN201810679281 A CN 201810679281A CN 108831308 A CN108831308 A CN 108831308A
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- foldable display
- extension
- extending direction
- display panel
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- 235000007164 Oryza sativa Nutrition 0.000 claims 2
- 235000009566 rice Nutrition 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 13
- 238000005452 bending Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000003447 ipsilateral effect Effects 0.000 description 2
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Classifications
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/301—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements flexible foldable or roll-able electronic displays, e.g. thin LCD, 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
- 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
Abstract
The invention discloses a kind of foldable display panel and foldable display devices, folding region is corresponding with multiple pixel units, each pixel unit includes pixel circuit, pixel circuit includes multiple transistors, and a channel of at least one transistor includes multiple extensions and by the end to end interconnecting piece of two neighboring extension；The extending direction of folding shaft of extending direction and folding region of extension is parallel, and the extending direction of interconnecting piece intersects with the extending direction of folding shaft, any one extension is greater than length of any one interconnecting piece on the extending direction of interconnecting piece in the length on the extending direction of extension.The extending direction of multiple extensions of the channel and the extending direction of folding shaft are arranged in parallel, and finally guarantee that the length of part channel parallel with the extending direction of folding shaft in transistor is greater than the length of the part channel intersected with the extending direction of folding shaft, reduce the deformation degree occurred when transistor is bent with foldable display device.
Description
Technical field
The present invention relates to foldable field of display technology, more specifically, are related to a kind of foldable display panel and can
Folding display device.
Background technique
In recent years, with the development of display technology, portable terminal such as mobile phone, tablet computer etc. is extremely popular, however,
With the increase of the portable terminals size such as mobile phone, tablet computer, so that the change of these terminal installations is not easy to carry, having can
The display device of folding property is convenient for carrying, and is an important development direction of display device now.Foldable display device energy
It enough solves the problems, such as not portable, wherein the display screen for including in foldable display device is flexible display screen.However, when upper
When stating foldable display device has fixed folding position, the device of folding region can be sent out with the bending of foldable display device
Raw deformation, as the transistor of pixel circuit can lead to the characteristic (resistance, electron hole etc.) of transistor as deformation occurs for bending
Change and occur the situation of display brightness unevenness.
Summary of the invention
In view of this, the present invention provides a kind of foldable display panel and foldable display devices, to the picture of folding region
One channel of at least one transistor of plain circuit carries out special designing, i.e., by the extending direction of multiple extensions of the channel
It is arranged in parallel with the extending direction of folding shaft, and finally guarantees part channel parallel with the extending direction of folding shaft in transistor
Length be greater than the length of part channel intersect with the extending direction of folding shaft, reduction transistor is curved with foldable display device
The deformation degree occurred when bent, and then improve the situation of the display brightness unevenness of foldable display device.
To achieve the above object, technical solution provided by the invention is as follows：
A kind of foldable display panel, the foldable display panel include folding region, and the folding region is corresponding with multiple
Pixel unit, each pixel unit includes pixel circuit, and the pixel circuit includes multiple transistors, at least one institute
A channel for stating transistor includes multiple extensions and by the two neighboring end to end interconnecting piece of extension；
The extending direction of the extension is parallel with the extending direction of the folding shaft of the folding region, and the interconnecting piece
Extending direction intersects with the extending direction of the folding shaft, any one extension on the extending direction of the extension
Length be greater than length of any one interconnecting piece on the extending direction of the interconnecting piece.
Optionally, two sides sideline of the extension on the extending direction of the vertical folding shaft is line segment, jaggies
Or wave.
Optionally, length range of the extension on the extending direction of the extension is 10 microns -50 microns, packet
Include endpoint value.
Optionally, length range of the interconnecting piece on the extending direction of the interconnecting piece is not less than 4 microns.
Optionally, the width range of the extension is 2 microns -6 microns, including endpoint value.
Optionally, the width range of the interconnecting piece is 2 microns -6 microns, including endpoint value.
Optionally, the multiple transistor includes driving transistor, and the driving transistor is used to be the pixel unit
Middle light-emitting component provides driving current；
Wherein, a channel of the driving transistor includes multiple extensions and by the two neighboring extension
The end to end interconnecting piece；
The extending direction of the extension is parallel with the extending direction of the folding shaft of the folding region, and the extension
Length is greater than the length of the interconnecting piece.
Optionally, the pixel circuit includes the first transistor, second transistor, third transistor, the 4th transistor,
Five transistors, driving transistor and capacitor；
The grid of the first transistor is connected to first control signal end, and the first end of the first transistor is connected to
Anode voltage end, the second end of the first transistor are connected to the first end of the driving transistor；
The grid of the second transistor is connected to second control signal end, and the first end of the second transistor is connected to
The second end of the driving transistor, the second end of the second transistor are connected to the anode of light-emitting component, the luminous member
The cathode of part is connected to cathode voltage end；
The grid of the third transistor is connected to third control signal end, and the first end of the third transistor is connected to
Reference voltage end, the second end of the third transistor are connected to the grid of the driving transistor；
The grid of 4th transistor is connected to the 4th control signal end, and the first end of the 4th transistor is connected to
Data voltage end, the second end of the 4th transistor are connected to the first end of the driving transistor；
The grid of 5th transistor is connected to the 5th control signal end, and the first end of the 5th transistor is connected to
The second end of the driving transistor, the second end of the 5th transistor is connected to the grid of the driving transistor, described
First pole plate of capacitor is connected to the anode voltage end, and the second pole plate of the capacitor is connected to the grid of the driving transistor
Pole.
Optionally, when the first transistor and the second transistor are similar transistor npn npn, the first control letter
Number end and the second control signal end be the same end.
Optionally, when the 4th transistor and the 5th transistor are similar transistor npn npn, the 4th control letter
Number end and the 5th control signal end be the same end.
Optionally, the foldable display panel includes a folding region；
Alternatively, the foldable display panel includes multiple folding regions, and the folding shaft of each folding region
Extending direction is parallel.
Correspondingly, the foldable display device includes above-mentioned the present invention also provides a kind of foldable display device
Foldable display panel.
Compared to the prior art, technical solution provided by the invention has at least the following advantages：
The present invention provides a kind of foldable display panel and foldable display device, the foldable display panel includes
Folding region, the folding region are corresponding with multiple pixel units, and each pixel unit includes pixel circuit, the pixel circuit
It include multiple transistors, a channel of at least one transistor includes multiple extensions and described prolongs two neighboring
The end to end interconnecting piece of extending portion；The extending direction of the extension is parallel with the extending direction of the folding shaft of the folding region,
And the extending direction of the interconnecting piece intersects with the extending direction of the folding shaft, any one extension in the extension
Length on the extending direction in portion is greater than length of any one interconnecting piece on the extending direction of the interconnecting piece.
As shown in the above, technical solution provided by the invention, at least one crystal of the pixel circuit of folding region
One channel of pipe carries out special designing, i.e., puts down the extending direction of multiple extensions of the channel and the extending direction of folding shaft
Row setting, and finally guarantee the length of part channel parallel with the extending direction of folding shaft in transistor and be greater than and folding shaft
The length of the part channel of extending direction intersection reduces the deformation degree occurred when transistor is bent with foldable display device,
And then improve the situation of the display brightness unevenness of foldable display device.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is a kind of structural schematic diagram of foldable display panel provided by the embodiments of the present application；
Fig. 2 is the enlarged diagram of the channel of the transistor of folding region provided by the embodiments of the present application；
Fig. 3 is a kind of structural schematic diagram of extension provided by the embodiments of the present application；
Fig. 4 is the structural schematic diagram of another extension provided by the embodiments of the present application；
Fig. 5 is the structural schematic diagram of another extension provided by the embodiments of the present application；
Fig. 6 is a kind of structural schematic diagram of pixel circuit provided by the embodiments of the present application；
Fig. 7 is a kind of timing diagram provided by the embodiments of the present application.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
As described in background, foldable display device is able to solve not portable problem, wherein foldable display
The display screen for including in device is flexible display screen.However, when above-mentioned foldable display device has fixed folding position,
The device of folding region can be as deformation occurs for the bending of foldable display device, as the transistor of pixel circuit can be sent out with bending
Raw deformation, causes the characteristic (resistance, electron hole etc.) of transistor to change and occur the situation of display brightness unevenness.
Based on this, the embodiment of the present application provides a kind of foldable display panel and foldable display device, to folding region
Pixel circuit at least one transistor a channel carry out special designing, i.e., by the extension of multiple extensions of the channel
The extending direction of direction and folding shaft is arranged in parallel, and finally guarantees part parallel with the extending direction of folding shaft in transistor
The length of channel is greater than the length of the part channel intersected with the extending direction of folding shaft, reduces transistor and fills with foldable display
The deformation degree occurred when bending is set, and then improves the situation of the display brightness unevenness of foldable display device.It is above-mentioned to realize
Purpose, technical solution provided by the embodiments of the present application is as follows, specifically combines Fig. 1 to Fig. 7 to technology provided by the embodiments of the present application
Scheme is described in detail.
Referring to figs. 1 and 2, Fig. 1 is a kind of structural representation of foldable display panel provided by the embodiments of the present application
Figure, Fig. 2 are the enlarged diagram of the channel of the transistor of folding region provided by the embodiments of the present application, wherein described foldable aobvious
Show that panel includes：
Folding region 100, the folding region 100 are corresponding with multiple pixel units 10, and each pixel unit includes pixel
Circuit, the pixel circuit include multiple transistor T, a channel of at least one transistor T includes multiple extensions
Portion 11 and by the end to end interconnecting piece 12 of the two neighboring extension 11；
The extending direction (direction X) of the folding shaft of the extending direction (direction X) of the extension 11 and the folding region 100
In parallel, and the extending direction (direction Y) of the interconnecting piece 12 intersects with the extending direction (direction X) of the folding shaft, any one
The length of (direction X) on the extending direction of the extension 11 of the extension 11 is greater than any one interconnecting piece 12 and exists
Length on the extending direction (direction Y) of the interconnecting piece 12.
Specifically as shown in Fig. 2, the channel of transistor T includes that there are two extension 11 and two extensions 11 are connected as one
Ipsilateral one end of two extensions 11 is connected by the interconnecting piece 12 of item, interconnecting piece 12, and other the two of latter two extension 11
End is respectively connected to source S and drain D.Wherein, the length on extending direction X of extension 11 is far longer than interconnecting piece 12 and exists
Length on the Y of direction reduces its spy so that the channel deformation degree of transistor T is small in the bending of foldable display device
The changed degree of property.
In one embodiment of the application, the extending direction (direction Y) of interconnecting piece 12 provided by the present application preferably with folding shaft
Extending direction (direction X) it is perpendicular.
It should be noted that foldable display panel provided by the embodiments of the present application is organic light emitting display Flexible Displays face
Plate, the non-collapsible district of folding region two sides equally includes pixel unit, and the pixel unit of non-collapsible district includes pixel circuit
Structure, technical solution provided by the embodiments of the present application is improved for the transistor of the pixel circuit of folding region, for remaining
The structures such as non-collapsible district do not repeat specifically.In addition, pixel circuit provided by the embodiments of the present application and grid line and data line
Connection is the same as those in the prior art, and does not do extra repeat equally.
It should be understood that the pixel circuit of folding region provided by the embodiments of the present application, the channel of at least one transistor
It include multiple extensions, and multiple extensions are along the extending direction laid out in parallel of folding shaft, the head and the tail of two neighboring extension
It is connected by interconnecting piece and obtains a channel of the connection source electrode and drain electrode；Wherein, the embodiment of the present application is for extension
The position of head end and tail end needs to be determined according to channel pass current direction, and the end that current direction flows into can define
End for head end and current direction outflow is defined as tail end；Alternatively, current direction flow into end can be defined as tail end,
And the end of current direction outflow is defined as head end, by joining end to end two neighboring extension, is finally connected as one
Channel, also, the head end of the two neighboring extension of interconnecting piece connection and tail end are positioned at ipsilateral.
As shown in the above, technical solution provided by the embodiments of the present application, at least the one of the pixel circuit of folding region
One channel of a transistor carries out special designing, i.e., by the extension of the extending direction of multiple extensions of the channel and folding shaft
Direction is arranged in parallel, and finally guarantees the length of part channel parallel with the extending direction of folding shaft in transistor and be greater than and folding
The length of the part channel of the extending direction intersection of folded axis, reduces the deformation occurred when transistor is bent with foldable display device
Degree, and then improve the situation of the display brightness unevenness of foldable display device.
The application is not particularly limited concrete shape, the data parameters etc. of extension and interconnecting piece, needs according to reality
Border application is specifically designed.It is specific to the shape of channel provided by the embodiments of the present application, width, length etc. with reference to the accompanying drawing
Parameter is described.
Two sides sideline of the extension provided by the embodiments of the present application on the extending direction of the vertical folding shaft can
Think line segment, jaggies or wave.It is a kind of structure of extension provided by the embodiments of the present application with specific reference to shown in Fig. 3
Schematic diagram, wherein two sides sideline 11a of the extension 11 on the extending direction of vertical folding axis is line segment, i.e. the application is implemented
Example provide extension 11 global shape can be bar shaped extension, can the foldable display device of maximum reductions be bent when
Deformation degree.
Alternatively, refering to what is shown in Fig. 4, being the structural schematic diagram of another extension provided by the embodiments of the present application, wherein prolong
Two sides sideline 11b of the extending portion 11 on the extending direction of vertical folding axis is jaggies, i.e., extension provided by the embodiments of the present application
The global shape in portion 11 is zigzag extension.Preferably, the tooth tip of sawtooth provided by the embodiments of the present application extends bevel edge with it
Angle be not more than 45 degree, with reduce foldable display device be bent when deformation degree.
Alternatively, refering to what is shown in Fig. 5, being the structural schematic diagram of another extension provided by the embodiments of the present application, wherein prolong
Two sides sideline 11c of the extending portion 11 on the extending direction of vertical folding axis is wave, i.e., extension provided by the embodiments of the present application
The global shape in portion 11 is wavy extension.
It can be realized it should be noted that the extension of concrete shape provided by the above embodiment is that the application is all
Three kinds in shape, in the application other embodiments, extension can also be the extension of other shapes, as extension is hanging down
Two sides sideline on the extending direction of straight folding shaft can be the sideline of different patterns, be not particularly limited, need to this application
It specifically to be designed according to practical application.
In one embodiment of the application, length of the extension provided by the present application on the extending direction of the extension
Spending range is 10 microns -50 microns, including endpoint value.And the interconnecting piece provided by the embodiments of the present application is in the interconnecting piece
Extending direction on length range be not less than 4 microns.
In one embodiment of the application, the width range of the extension provided by the present application is 2 microns -6 microns, including
Endpoint value.And the width range of the interconnecting piece provided by the embodiments of the present application is 2 microns -6 microns, including endpoint value.
It is driving crystal for the transistor that light-emitting component provides driving current in the pixel circuit of foldable display panel
Pipe, so, the channel of this driving this Primary Component of transistor is carried out such as pattern in technical solution provided by the above embodiment
Special designing, utmostly improve the situation of the display brightness unevenness of foldable display device.Further, since in practical application
The pixel cell area of Folding display panel is limited, only can carry out above-mentioned special designing to the channel for driving transistor.That is, this
Apply for that the multiple transistor that embodiment provides includes driving transistor, the driving transistor is used to be the pixel unit
Middle light-emitting component provides driving current；
Wherein, a channel of the driving transistor includes multiple extensions and by the two neighboring extension
The end to end interconnecting piece；
The extending direction of the extension is parallel with the extending direction of the folding shaft of the folding region, and the extension
Length is greater than the length of the interconnecting piece.
It should be understood that the embodiment of the present application will drive the channel of transistor that multiple extensions and interconnecting piece is arranged, guarantee
It drives deformation degree of the channel of transistor when foldable display device is bent small, improves the display effect of foldable display device
Fruit.
With reference to the accompanying drawing to a kind of specific image element circuit structure provided by the embodiments of the present application and its course of work into
Row detailed description.Refering to what is shown in Fig. 6, being a kind of structural schematic diagram of pixel circuit provided by the embodiments of the present application, wherein this Shen
Please embodiment provide the pixel circuit include the first transistor M1, second transistor M2, third transistor M3, the 4th crystal
Pipe M4, the 5th transistor M5, driving transistor M0 and capacitor C；
The grid of the first transistor M1 is connected to first control signal end S1, the first end of the first transistor M1
It is connected to anode voltage end PVDD, the second end of the first transistor M1 is connected to the first end of the driving transistor M0；
The grid of the second transistor M2 is connected to second control signal end S2, the first end of the second transistor M2
It is connected to the second end of the driving transistor M0, the second end of the second transistor M2 is connected to the anode of light-emitting component D,
The cathode of the light-emitting component D is connected to cathode voltage end PVEE；
The grid of the third transistor M3 is connected to third control signal end S3, the first end of the third transistor M3
It is connected to reference voltage end VREF, the second end of the third transistor M3 is connected to the grid of the driving transistor M0；
The grid of the 4th transistor M4 is connected to the 4th control signal end S4, the first end of the 4th transistor M4
It is connected to data voltage end DATA, the second end of the 4th transistor M4 is connected to the first end of the driving transistor M0；
The grid of the 5th transistor M5 is connected to the 5th control signal end S5, the first end of the 5th transistor M5
It is connected to the second end of the driving transistor M0, the second end of the 5th transistor M5 is connected to the driving transistor M0
Grid, the first pole plate of the capacitor C is connected to the anode voltage end PVDD, and the second pole plate of the capacitor C is connected to
The grid of the driving transistor M0.
In conjunction with shown in Fig. 6 and Fig. 7, Fig. 7 is a kind of timing diagram provided by the embodiments of the present application, and more than timing shown in Fig. 7
Stating the first transistor M1, third transistor M3, the 4th transistor M4, the 5th transistor M5 and driving transistor M0 is p-type crystalline substance
It is illustrated for body pipe, wherein the driving of pixel circuit is respectively including three phases：Reseting stage T1, write phase T2
With light emitting phase T3；
In reseting stage T1, the first transistor M1, second transistor M2, the 4th transistor M4 and the 5th transistor M5 are controlled
Shutdown, and control third transistor M3 conducting；The reference voltage end VREF reference voltage exported is transmitted to by third transistor M3
The grid of transistor M0 is driven, is resetted with the gate node to driving transistor M0.
In write phase T2, the first transistor M1, second transistor M2 and third transistor M3 shutdown are controlled, and controls the
Four transistor M4 and the 5th transistor M5 conducting；The DATA data voltage exported in data voltage end is transmitted to by the 4th transistor M4
Drive transistor M0 first end, the 5th transistor M5 by drive transistor M0 grid and driving transistor M0 second end it
Between connect, and due to capacitor C storage voltage effect and control driving transistor M0 conducting, and then write phase T2 can will
While data voltage is written, the threshold voltage of crawl driving transistor M0.
In light emitting phase T3, the first transistor M1 and second transistor M2 conducting is controlled, and controls third transistor M3, the
Four transistor M4 and the 5th transistor M5 shutdown；At this point, controlling driving transistor M0 since capacitor C stores the effect of voltage and leading
It is logical, and pass through the conducting of the first transistor M1 and second transistor M2, driving transistor M0 is transmitted driving current
To light-emitting component D, shone with controlling light-emitting component D；Further, since having grabbed the threshold value of driving transistor M0 in second stage T2
Voltage, and then the threshold voltage can be eliminated in light emitting phase T3, so that driving current is unrelated with threshold voltage, guarantee
The display effect of foldable display device is high.
Further, pixel circuit provided by the embodiments of the present application further includes one the 6th transistor, wherein the 6th transistor
Grid be connected to the 6th control signal end, and the first end of the 6th transistor connects resetting voltage end, the of the 6th transistor
The anode of two ends connection light-emitting component.Wherein, when driving to pixel circuit, the 6th transistor is connected in reseting stage,
And turned off in write phase and light emitting phase, for resetting voltage to be transmitted to the anode of light-emitting component in reseting stage, avoid
Light-emitting component shines in reseting stage.
It should be noted that the embodiment of the present application is for the first transistor, second transistor, third transistor, the 4th crystalline substance
Body pipe, the 5th transistor, the 6th transistor and drive transistor type be not particularly limited, can be P-type transistor,
It can be N-type transistor, need to meet above-mentioned driving and switch off and on timing in the process.
In conjunction with shown in Fig. 6 and Fig. 7, the conducting of the first transistor M1 and second transistor M2 provided by the embodiments of the present application and
It is identical to turn off timing, so, the first transistor M1 provided by the embodiments of the present application and the second transistor M2 are similar
When transistor npn npn, the first control signal end and the second control signal end are the same end, can reduce port number.
And the turn-on and turn-off timing phase of the 4th transistor M4 and the 5th transistor M5 provided by the embodiments of the present application
Together, so, the 4th transistor M4 and the 5th transistor M5 provided by the embodiments of the present application be similar transistor npn npn when,
4th control signal end and the 5th control signal end are the same end, can reduce port number.
In one embodiment of the application, the foldable display panel provided by the present application may include the folding
Area；
Alternatively, the foldable display panel that the application mentions can also include multiple in the application other embodiments
The folding region, and the extending direction of the folding shaft of each folding region is parallel.
Correspondingly, the embodiment of the present application also provides a kind of foldable display device, the foldable display device includes
The foldable display panel that above-mentioned any one embodiment provides.
The embodiment of the present application provides a kind of foldable display panel and foldable display device, the foldable display surface
Plate includes folding region, and the folding region is corresponding with multiple pixel units, and each pixel unit includes pixel circuit, the picture
Plain circuit includes multiple transistors, and a channel of at least one transistor includes multiple extensions and will be two neighboring
The end to end interconnecting piece of extension；The extending direction of the folding shaft of the extending direction of the extension and the folding region
In parallel, and the extending direction of the interconnecting piece intersects with the extending direction of the folding shaft, any one extension in institute
The length stated on the extending direction of extension is greater than length of any one interconnecting piece on the extending direction of the interconnecting piece.
As shown in the above, technical solution provided by the embodiments of the present application, at least the one of the pixel circuit of folding region
One channel of a transistor carries out special designing, i.e., by the extension of the extending direction of multiple extensions of the channel and folding shaft
Direction is arranged in parallel, and finally guarantees the length of part channel parallel with the extending direction of folding shaft in transistor and be greater than and folding
The length of the part channel of the extending direction intersection of folded axis, reduces the deformation occurred when transistor is bent with foldable display device
Degree, and then improve the situation of the display brightness unevenness of foldable display device.Meanwhile multiple and folding shaft is set in channels
The parallel extension of extending direction, the chip area on the extending direction of vertical folding axis can be reduced.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (12)
1. a kind of foldable display panel, the foldable display panel includes folding region, and the folding region is corresponding with multiple pictures
Plain unit, each pixel unit includes pixel circuit, and the pixel circuit includes multiple transistors, which is characterized in that
One channel of at least one transistor includes multiple extensions and by the two neighboring end to end company of extension
Socket part；
The extending direction of the extension is parallel with the extending direction of the folding shaft of the folding region, and the extension of the interconnecting piece
Direction is intersected with the extending direction of the folding shaft, the length on the extending direction of the extension of any one extension
Degree is greater than length of any one interconnecting piece on the extending direction of the interconnecting piece.
2. foldable display panel according to claim 1, which is characterized in that the extension is in the vertical folding shaft
Extending direction on two sides sideline be line segment, jaggies or wave.
3. foldable display panel according to claim 1, which is characterized in that the extension prolongs the extension
Stretching the length range on direction is 10 microns -50 microns, including endpoint value.
4. foldable display panel according to claim 1, which is characterized in that the interconnecting piece prolongs the interconnecting piece
Stretching the length range on direction is not less than 4 microns.
5. foldable display panel according to claim 1, which is characterized in that the width range of the extension is 2 micro-
- 6 microns of rice, including endpoint value.
6. foldable display panel according to claim 1, which is characterized in that the width range of the interconnecting piece is 2 micro-
- 6 microns of rice, including endpoint value.
7. foldable display panel according to claim 1, which is characterized in that the multiple transistor includes driving crystal
Pipe, the driving transistor are used to provide driving current for light-emitting component in the pixel unit；
Wherein, a channel of the driving transistor include multiple extensions and will the two neighboring extension from beginning to end
The connected interconnecting piece；
The extending direction of the extension is parallel with the extending direction of the folding shaft of the folding region, and the length of the extension
Greater than the length of the interconnecting piece.
8. foldable display panel according to claim 1, which is characterized in that the pixel circuit includes first crystal
Pipe, second transistor, third transistor, the 4th transistor, the 5th transistor, driving transistor and capacitor；
The grid of the first transistor is connected to first control signal end, and the first end of the first transistor is connected to anode
Voltage end, the second end of the first transistor are connected to the first end of the driving transistor；
The grid of the second transistor is connected to second control signal end, and the first end of the second transistor is connected to described
The second end of transistor is driven, the second end of the second transistor is connected to the anode of light-emitting component, the light-emitting component
Cathode is connected to cathode voltage end；
The grid of the third transistor is connected to third control signal end, and the first end of the third transistor is connected to reference
Voltage end, the second end of the third transistor are connected to the grid of the driving transistor；
The grid of 4th transistor is connected to the 4th control signal end, and the first end of the 4th transistor is connected to data
Voltage end, the second end of the 4th transistor are connected to the first end of the driving transistor；
The grid of 5th transistor is connected to the 5th control signal end, and the first end of the 5th transistor is connected to described
The second end of transistor is driven, the second end of the 5th transistor is connected to the grid of the driving transistor, the capacitor
The first pole plate be connected to the anode voltage end, the second pole plate of the capacitor is connected to the grid of the driving transistor.
9. foldable display panel according to claim 8, which is characterized in that the first transistor and second crystalline substance
When body pipe is similar transistor npn npn, the first control signal end and the second control signal end are the same end.
10. foldable display panel according to claim 8, which is characterized in that the 4th transistor and the described 5th
When transistor is similar transistor npn npn, the 4th control signal end and the 5th control signal end are the same end.
11. foldable display panel according to claim 1, which is characterized in that the foldable display panel includes one
A folding region；
Alternatively, the foldable display panel includes multiple folding regions, and the extension of the folding shaft of each folding region
Direction is parallel.
12. a kind of foldable display device, which is characterized in that the foldable display device includes that claim 1~11 is any
Foldable display panel described in.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109994490A (en) * | 2019-01-09 | 2019-07-09 | 昆山国显光电有限公司 | Tft array substrate and display device |
| CN110047914A (en) * | 2019-04-29 | 2019-07-23 | 厦门天马微电子有限公司 | Organic light emitting display panel and display device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1901206A (en) * | 2005-07-20 | 2007-01-24 | 三星Sdi株式会社 | Organic light emitting display device |
| US9634272B2 (en) * | 2015-02-02 | 2017-04-25 | Samsung Display Co., Ltd. | Foldable display |
| CN106898614A (en) * | 2017-02-27 | 2017-06-27 | 京东方科技集团股份有限公司 | A kind of flexible array substrate, display panel and preparation method |
| CN107204342A (en) * | 2016-03-16 | 2017-09-26 | 昆山工研院新型平板显示技术中心有限公司 | Flexible electronic device and its manufacture method |
| CN107393930A (en) * | 2013-09-12 | 2017-11-24 | 索尼公司 | Display device |
| CN107452339A (en) * | 2017-07-31 | 2017-12-08 | 上海天马有机发光显示技术有限公司 | Image element circuit, its driving method, organic electroluminescence display panel and display device |
| CN107978612A (en) * | 2017-11-30 | 2018-05-01 | 京东方科技集团股份有限公司 | Flexible display substrates and preparation method thereof, flexible display panels and display device |
-
2018
- 2018-06-27 CN CN201810679281.6A patent/CN108831308A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1901206A (en) * | 2005-07-20 | 2007-01-24 | 三星Sdi株式会社 | Organic light emitting display device |
| CN107393930A (en) * | 2013-09-12 | 2017-11-24 | 索尼公司 | Display device |
| US9634272B2 (en) * | 2015-02-02 | 2017-04-25 | Samsung Display Co., Ltd. | Foldable display |
| CN107204342A (en) * | 2016-03-16 | 2017-09-26 | 昆山工研院新型平板显示技术中心有限公司 | Flexible electronic device and its manufacture method |
| CN106898614A (en) * | 2017-02-27 | 2017-06-27 | 京东方科技集团股份有限公司 | A kind of flexible array substrate, display panel and preparation method |
| CN107452339A (en) * | 2017-07-31 | 2017-12-08 | 上海天马有机发光显示技术有限公司 | Image element circuit, its driving method, organic electroluminescence display panel and display device |
| CN107978612A (en) * | 2017-11-30 | 2018-05-01 | 京东方科技集团股份有限公司 | Flexible display substrates and preparation method thereof, flexible display panels and display device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109994490A (en) * | 2019-01-09 | 2019-07-09 | 昆山国显光电有限公司 | Tft array substrate and display device |
| CN110047914A (en) * | 2019-04-29 | 2019-07-23 | 厦门天马微电子有限公司 | Organic light emitting display panel and display device |
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