CN107256692B - Resolution update device, shift register, flexible display panels, display equipment - Google Patents
Resolution update device, shift register, flexible display panels, display equipment Download PDFInfo
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- CN107256692B CN107256692B CN201710686395.9A CN201710686395A CN107256692B CN 107256692 B CN107256692 B CN 107256692B CN 201710686395 A CN201710686395 A CN 201710686395A CN 107256692 B CN107256692 B CN 107256692B
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- 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
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C19/00—Digital stores in which the information is moved stepwise, e.g. shift registers
- G11C19/28—Digital stores in which the information is moved stepwise, e.g. shift registers using semiconductor elements
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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
- G09G2310/00—Command of the display device
- G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
- G09G2310/0264—Details of driving circuits
- G09G2310/0286—Details of a shift registers arranged for use in a driving circuit
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Computer Hardware Design (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The invention discloses a kind of display equipment, flexible display panels and its resolution update devices, shift register, wherein updating device includes: N number of detection unit, each detection unit includes pressure-sensitive double-gated transistor and the first transistor, first pole of pressure-sensitive double-gated transistor is connected with the first clock signal input terminal, and control electrode is connected with pull-up node；First pole of the first transistor is connected with public electrode, control electrode is extremely connected with the second of pressure-sensitive double-gated transistor, when pressure-sensitive double-gated transistor is pressurized and the clock signal provided with pull-up node and the first clock signal input terminal is high level, the voltage of public electrode is exported by the first transistor；The depressed position of the timing positioning flexible display panel for the clock signal that control unit is provided according to the voltage of public electrode and the first clock signal input terminal, and be updated according to resolution ratio of the depressed position to flexible display panels.The device can fast and accurately obtain update resolution ratio.
Description
Technical field
The present invention relates to field of display technology, in particular to the resolution update device of a kind of flexible display panels, one kind
For the shift register of flexible display panels, a kind of flexible display panels and a kind of display equipment.
Background technique
With universal, the future of OLED (Organic Light Emitting Diode, Organic Light Emitting Diode) technology
Flexible panel very easily will be badly in need of display driver when the display area of flexible panel changes by Folding display
Can real-time update resolution ratio to adapt to the folding of flexible panel, therefore, the variation for how quickly detecting display area becomes to get over
Come more important.
Summary of the invention
The present invention is directed to solve at least some of the technical problems in related technologies.For this purpose, of the invention
First purpose is to propose a kind of resolution update device of flexible display panels, can fast and accurately positioning flexible show
Show the folding position of panel, to carry out resolution update according to folding position, and eliminates setting on the outside of flexible display panels
Detection sensor etc. so that the frivolous beauty of appearance.
Second object of the present invention is to propose a kind of shift register for flexible display panels.Of the invention
Three purposes are to propose a kind of flexible display panels.Fourth object of the present invention is to propose another Flexible Displays face
Plate.5th purpose of the invention is to propose a kind of display equipment.
To achieve the above object, first aspect present invention embodiment proposes a kind of resolution update of flexible display panels
Device, the flexible display panels include N number of shift register of N row pixel unit and corresponding N row pixel unit setting,
In, N is integer greater than 1, and the resolution update device includes: N number of detection unit, N number of detection unit respectively with institute
N number of shift register is stated to be connected with N row pixel unit correspondence, wherein each detection unit includes: pressure-sensitive double-gated transistor,
First pole of the pressure-sensitive double-gated transistor is connected with the first clock signal input terminal of corresponding shift register, described pressure-sensitive
The control electrode of double-gated transistor is connected with the pull-up node of corresponding shift register；The first transistor, described first is brilliant
First pole of body pipe and the public electrode of corresponding pixel unit are connected, the control electrode of the first transistor and described pressure-sensitive double
The second of gate transistor is extremely connected, wherein when the pressure-sensitive double-gated transistor is pressurized and is connected with the pressure-sensitive double-gated transistor
When the clock signal that pull-up node and the first clock signal input terminal provide is high level, the first transistor conducting, institute
The voltage for stating public electrode is exported by the first transistor；Control unit, described control unit respectively with each inspection
Survey the first transistor in unit second is extremely connected, and described control unit is used for according to the voltage of the public electrode and described
The timing for the clock signal that first clock signal input terminal provides positions the depressed position of the flexible display panels, and according to institute
Depressed position is stated to be updated the resolution ratio of the flexible display panels.
The resolution update device of flexible display panels according to an embodiment of the present invention, by by each pressure-sensitive double grid crystal
First pole of pipe and the first clock signal input terminal of corresponding shift register are connected, and by the control of pressure-sensitive double-gated transistor
Pole and the pull-up node of corresponding shift register are connected, and by the first pole of each the first transistor and corresponding pixel list
The public electrode of member is connected, and the control electrode of the first transistor is extremely connected with the second of pressure-sensitive double-gated transistor, works as pressure in this way
What quick double-gated transistor compression and the pull-up node being connected with the pressure-sensitive double-gated transistor and the first clock signal input terminal provided
When clock signal is high level, the voltage of public electrode is exported by the first transistor, and control unit is according to common electrical at this time
The timing for the clock signal that the voltage of pole and the first clock signal input terminal provide can positioning flexible display panel compression position
It sets, and is updated according to resolution ratio of the depressed position to flexible display panels.The device can fast and accurately be determined as a result,
The folding position of position flexible display panels, to carry out resolution update according to folding position, and eliminates flexible display panels
The detection sensor etc. of outside setting, so that the frivolous beauty of appearance.
According to one embodiment of present invention, the resolution update device of above-mentioned flexible display panels, further includes: N number of
Reset circuit, each reset circuit in N number of reset circuit respectively with the pull-down node of N number of shift register, multiple
Position signal input part, low level signal input terminal and the pressure-sensitive double-gated transistor in N number of detection unit it is second extremely right
It should be connected, the reset circuit is used in the reset signal that the pull-down node or the reset signal input terminal provide be low
When level, the second pole of the pressure-sensitive double-gated transistor is pulled down to the low level that the low level signal input terminal provides, with
Keep the first transistor in an off state.
According to one embodiment of present invention, the reset circuit includes: second transistor, and the of the second transistor
One pole is extremely connected with the second of the pressure-sensitive double-gated transistor, and the second pole of the second transistor and the low level signal are defeated
Enter end to be connected, the control electrode of the second transistor is connected with the reset signal input terminal；Third transistor, the third are brilliant
First pole of body pipe is extremely connected with the second of the pressure-sensitive double-gated transistor, the second pole of the third transistor and the low electricity
Flat signal input part is connected, and the control electrode of the third transistor is connected with the pull-down node.
According to one embodiment of present invention, the first transistor in each detection unit is arranged in corresponding pixel
In unit.
To achieve the above object, second aspect of the present invention embodiment proposes a kind of displacement for flexible display panels and posts
Storage, the shift register include grid signal input terminal, the first clock signal input terminal, reset signal input terminal, low electricity
Flat signal input part, grid signal output end, pull-up node and pull-down node, the shift register further include: pressure-sensitive double grid
Transistor, the first pole of the pressure-sensitive double-gated transistor are connected with first clock signal input terminal, and the pressure-sensitive double grid is brilliant
The control electrode of body pipe is connected with the pull-up node；The first transistor, the first pole of the first transistor are posted with the displacement
The public electrode of the corresponding pixel unit of storage is connected, the control electrode of the first transistor and the pressure-sensitive double-gated transistor
Second is extremely connected, and the second pole of the first transistor is connected with external control unit outside, wherein when the pressure-sensitive double-gated transistor
When the clock signal that compression and the pull-up node and first clock signal input terminal provide is high level, described first
The voltage of transistor turns, the public electrode is exported by the first transistor to the external control unit outside, with toilet
State the clock signal that external control unit outside is provided according to the voltage of the public electrode and first clock signal input terminal
Timing positions the depressed position of the flexible display panels, and the resolution according to the depressed position to the flexible display panels
Rate is updated.
Shift register according to an embodiment of the present invention for flexible display panels, by by pressure-sensitive double-gated transistor
First pole is connected with the first clock signal input terminal, and the control electrode of pressure-sensitive double-gated transistor is connected with pull-up node, and
The public electrode of first pole of the first transistor pixel unit corresponding with shift register is connected, and by the first transistor
Control electrode is extremely connected with the second of pressure-sensitive double-gated transistor, in this way when the compression of pressure-sensitive double-gated transistor and pull-up node and first
When the clock signal that clock signal input part provides is high level, the voltage of public electrode is exported by the first transistor to outside
Control unit, the clock signal provided so as to external control unit outside according to the voltage of public electrode and the first clock signal input terminal
Timing positioning flexible display panel depressed position, and the resolution ratio of flexible display panels is carried out more according to depressed position
Newly.It is capable of the folding position of fast and accurately positioning flexible display panel by the shift register as a result, according to folding
Position carries out resolution update, and eliminates the detection sensor etc. being arranged on the outside of flexible display panels, so that appearance is frivolous
It is beautiful.
According to one embodiment of present invention, the above-mentioned shift register for flexible display panels, further includes: reset
Circuit, the reset circuit respectively with the pull-down node, the reset signal input terminal, the low level signal input terminal and
The second of the pressure-sensitive double-gated transistor is extremely connected, and the reset circuit is used in the pull-down node or the reset signal
When the reset signal that input terminal provides is high level, the second pole of the pressure-sensitive double-gated transistor is pulled down to the low level and is believed
The low level that number input terminal provides, so that the first transistor is in an off state.
According to one embodiment of present invention, the reset circuit includes: second transistor, and the of the second transistor
One pole is extremely connected with the second of the pressure-sensitive double-gated transistor, and the second pole of the second transistor and the low level signal are defeated
Enter end to be connected, the control electrode of the second transistor is connected with the reset signal input terminal；Third transistor, the third are brilliant
First pole of body pipe is extremely connected with the second of the pressure-sensitive double-gated transistor, the second pole of the third transistor and the low electricity
Flat signal input part is connected, and the control electrode of the third transistor is connected with the pull-down node.
To achieve the above object, third aspect present invention embodiment proposes a kind of flexible display panels comprising above-mentioned
Resolution update device.
Flexible display panels according to an embodiment of the present invention can be quickly and quasi- by above-mentioned resolution update device
It realizes the quick and precisely update to flexible display panels resolution ratio, and saves in the folding position of true positioning flexible display panel
Detection sensor being arranged on the outside of flexible display panels etc. is gone, so that the frivolous beauty of appearance.
To achieve the above object, fourth aspect present invention embodiment proposes a kind of flexible display panels, comprising: N row picture
Plain unit；N number of shift register, each shift register in N number of shift register are above-mentioned shift register,
In, the grid signal input terminal of the 1st shift register is connected with enabling signal line, the reset of the 1st shift register
Signal input part is connected with the grid signal output end of the 2nd shift register, the grid signal input of i-th of shift register
End is connected with the grid signal output end of (i-1)-th shift register, the reset signal input terminal of i-th of shift register
It is connected with the grid signal output end of i+1 shift register, wherein i is the integer greater than 2 and less than N.
Flexible display panels according to an embodiment of the present invention can be fast and accurately by above-mentioned shift register
The folding position of positioning flexible display panel is realized the quick and precisely update to flexible display panels resolution ratio, is eliminated simultaneously
The detection sensor etc. being arranged on the outside of flexible display panels, so that the frivolous beauty of appearance.
To achieve the above object, fifth aspect present invention embodiment proposes a kind of display equipment comprising the present invention the
The flexible display panels that three aspects or fourth aspect embodiment propose.
Display equipment according to an embodiment of the present invention can be fast and accurately real by above-mentioned flexible display panels
The update of existing resolution ratio, while the frivolous beauty of appearance can be made.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the resolution update device of flexible display panels according to an embodiment of the invention；
Fig. 2 is the structural schematic diagram of shift register according to an embodiment of the invention；
Fig. 3 a is working timing figure when shift register shown in Fig. 2 is not folded；
Fig. 3 b is working timing figure when shift register shown in Fig. 2 is folded；
Fig. 4 is the structural representation of the resolution update device of flexible display panels in accordance with another embodiment of the present invention
Figure；
Fig. 5 is the structural schematic diagram of shift register in accordance with another embodiment of the present invention；
Fig. 6 is the block diagram of flexible display panels according to an embodiment of the present invention；
Fig. 7 is the circuit diagram of the shift register according to an embodiment of the invention for flexible display panels；
Fig. 8 is the circuit signal of the shift register in accordance with another embodiment of the present invention for flexible display panels
Figure；
Fig. 9 is the structural schematic diagram of flexible display panels according to an embodiment of the invention；
Figure 10 is the working timing figure of flexible display panels shown in Fig. 9；
Figure 11 is the schematic diagram that flexible display panels fold front and back；
Figure 12 is the structural schematic diagram of flexible display panels in accordance with another embodiment of the present invention；
Figure 13 is the block diagram of display equipment according to an embodiment of the present invention.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
With reference to the accompanying drawings come describe the flexible display panels proposed according to embodiments of the present invention resolution update device,
For the shift register of flexible display panels, flexible display panels and display equipment.
Fig. 1 is the structural schematic diagram of the resolution update device of flexible display panels according to an embodiment of the invention.
In an embodiment of the present invention, flexible display panels include N number of displacement of N row pixel unit and corresponding N row pixel unit setting
Register, wherein N is the integer greater than 1.
As shown in Figure 1, the resolution update device of the flexible display panels can include: N number of detection unit and control unit
20, N number of detection unit is corresponding with N number of shift register and N row pixel unit respectively to be connected.
Wherein, each detection unit includes pressure-sensitive double-gated transistor MAi (1≤i≤N) and the first transistor T1i, pressure-sensitive double
The first pole of gate transistor MAi is connected with the first clock signal input terminal CLK1i of corresponding shift register, and pressure-sensitive double grid is brilliant
The control electrode of body pipe MAi is connected with the pull-up node PUi of corresponding shift register；The first pole and the phase of the first transistor T1i
The public electrode Vcomi for the pixel unit answered is connected, and the second of the control electrode of the first transistor T1 and pressure-sensitive double-gated transistor MAi
Extremely it is connected.Wherein, when pressure-sensitive double-gated transistor MAi be pressurized and with the pressure-sensitive double-gated transistor MAi pull-up node PUi being connected and
When the clock signal that first clock signal input terminal CLK1i is provided is high level, the first transistor T1i conducting, public electrode
The voltage of Vcomi is exported by the first transistor T1i.
Control unit 20 is extremely connected with second of the first transistor T1i in each detection unit respectively, control unit 20
For being positioned according to the timing of the voltage of public electrode Vcomi and the clock signal of the first clock signal input terminal CLK1i offer
The depressed position of flexible display panels, and be updated according to resolution ratio of the depressed position to flexible display panels.
According to one embodiment of present invention, the first transistor T1i in each detection unit is arranged in corresponding pixel
In unit.
Specifically, in an embodiment of the present invention, the pressure-sensitive double-gated transistor MAi in resolution update device is settable
In GOA (Gate Driver On Array, array substrate gate driving) unit, the first transistor T1i may be provided at the area AA
(Active Area, array of display area).Further, when the row scanning of flexible display panels is using shift register, pressure
Quick double-gated transistor MAi may be provided in corresponding shift register, and the first transistor T1i may be provided at corresponding pixel unit
In, control unit 20 can be external SOC (System-on-a-Chip, System on Chip/SoC).
As a specific example, when pressure-sensitive double-gated transistor MAi is arranged in corresponding shift register, connection
Relationship is as shown in Fig. 2, the first pole of pressure-sensitive double-gated transistor MAi and the first clock signal input terminal of the shift register
CLK1i is connected, and the control electrode of pressure-sensitive double-gated transistor MAi is connected with pull-up node PUi, and the second of pressure-sensitive double-gated transistor MAi
Control electrode phase of the pole as folded signal output end G (i)-Sen and the first transistor T1i being arranged in respective pixel unit
Even.
When flexible display panels are not folded, the working sequence of shift register is as shown in Figure 3a:
First stage: when grid signal input terminal Inputi does not have signal input, although the first clock signal input terminal
The clock signal that CLK1i is provided will appear high level, but since pull-up node PUi point keeps low level, transistor M9 is in
Off state, so grid signal output end G (i) is low level.
Second stage: when grid signal input terminal Inputi has signal input, transistor M1 conducting, so that pull-up node
PUi becomes high level from low level, and transistor M9 is connected, but due to the first clock signal input terminal CLK1i offer at this time
Clock signal is low level, so grid signal output end G (i) is still low level.
Phase III: when the clock signal that the first clock signal input terminal CLK1i is provided becomes high level from low level,
Since pull-up node PUi has been high level, so transistor M9 is connected, grid signal output end G (i) can export high level.
Since the parasitic capacitance of capacitor C1 and transistor M9 itself exists, with raising for grid signal output end G (i) current potential, pull-up
The current potential of node PUi can be raised further, so that the unlatching of transistor M9 is bigger, further increase the charging of transistor M9
Ability guarantees the charging of pixel unit.When pull-up node PUi is high level, transistor M5 and M7 conducting, so that pull-down node
PDi keeps low level.
Fourth stage: when the clock signal that the first clock signal input terminal CLK1i is provided becomes low level, and letter is resetted
Number input terminal Reseti is high level, transistor M2 and M11 conducting, and pull-up node PUi and grid signal output end G (i) is drawn
Low, output is closed.And after pull-up node PUi is pulled low, transistor M5 and transistor M7 shutdown, meanwhile, in second clock
Under the high level effect of signal input part CLK2i, transistor M4 and transistor M6 conducting, pull-down node PDi are charged as high level,
Transistor M3 and transistor M10 conducting, so that grid signal output end G (i) maintains low level state, to reduce grid signal
The noise of output end G (i).
It should be noted that due to pressure-sensitive double-gated transistor MAi need in compression and when pull-up node PUi is high level
It can be connected, so when pressure-sensitive double-gated transistor MAi is not pressurized, even if pull-up node PUi is high level, pressure-sensitive double-gated transistor
MAi also will be in an off state, the output of folded signal output end G (i)-Sen no signal.
And when pressure-sensitive double-gated transistor MAi is pressurized, the working sequence of shift register is as shown in Figure 3b, wherein first
It is identical when stage and fourth stage are not pressurized with pressure-sensitive double-gated transistor MAi, and in second stage, when pull-up node PUi is
When high level, under pressure and the collective effect of pull-up node PUi, pressure-sensitive double-gated transistor MAi conducting, but when due to first
Clock signal input part CLK1i is low level, so folded signal output end G (i)-Sen is low level, at the first transistor T1i
In off state.And in the phase III, since pull-up node PUi is high level, and the first clock signal input terminal CLK1i is also
High level, so folded signal output end G (i)-Sen becomes high level, the first transistor T1i conducting, control unit 20 at this time
The voltage of the public electrode Vcomi of pixel unit will be obtained, then control unit 20 is defeated according to the voltage and the first clock signal
The depressed position of flexible display panels can be accurately positioned in the timing for the clock signal for entering to hold CLK1i to provide, and according to compression position
It sets and the resolution ratio of flexible display panels is updated.
Therefore, by above-mentioned example it is found that need to only add pressure-sensitive double-gated transistor on the basis of original GOA unit,
Pressure, and the height electricity of the clock signal of the first clock signal input terminal offer are bent by the external world in the row GOA unit in this way
When flat arrival, folded signal output end exports high level, further opens the first transistor of the area AA connection public electrode, so that
The Voltage Feedback of the public electrode of the row is to external SOC, the clock letter that outside SOC combines the first clock signal input terminal to provide
Number timing and the phase relation of signal of folded signal output end output can judge compression line number, to orient flexibility
The folding position of display panel, and then display driver is notified to get new resolution ratio, to adapt to current flexible display panels
Display area.
Further, according to one embodiment of present invention, as shown in figure 4, the resolution ratio of above-mentioned flexible display panels
Updating device further include: N number of reset circuit, each reset circuit in N number of reset circuit is respectively and under N number of shift register
Draw the pressure-sensitive double grid in node PDi, reset signal input terminal Reseti, low level signal input terminal VGL and N number of detection unit
The second of transistor MAi is extremely corresponding to be connected, and reset circuit in pull-down node PDi or reset signal input terminal Reseti for mentioning
When the reset signal of confession is low level, the second pole of pressure-sensitive double-gated transistor MAi is pulled down to low level signal input terminal VGL and is mentioned
The low level of confession, so that the first transistor T1i is in an off state.
Still further, second is brilliant as shown in figure 4, reset circuit includes second transistor T2i and third transistor T3i
The first pole of body pipe T2i is extremely connected with the second of pressure-sensitive double-gated transistor MAi, the second pole of second transistor T2i and low level
Signal input part VGL is connected, and the control electrode of second transistor T2i is connected with reset signal input terminal Reseti；Third transistor
The first pole of T3i is extremely connected with the second of pressure-sensitive double-gated transistor MAi, the second pole of third transistor T3i and low level signal
Input terminal VGL is connected, and the control electrode of third transistor T3i is connected with pull-down node PDi.
Specifically, as shown in figure 5, reset circuit may be provided in corresponding shift register, when flexible display panels not
When being folded, the working sequence of shift register just no longer describes here, and when flexible display panels are folded, which posts
The working sequence of storage is identical as working sequence shown in Fig. 3 b, and difference is:
In fourth stage, when the clock signal that the first clock signal input terminal CLK1i is provided becomes low level, and reset
When signal input part Reseti is high level, transistor M2, transistor M11 and third transistor T3i conducting, pull-up node PUi,
Grid signal output end G (i) and folded signal output end G (i)-Sen are pulled low.It is brilliant and after pull-up node PUi is pulled low
Body pipe M5 and transistor M7 shutdown, while under the effect of the high level of second clock signal input part CLK2i, transistor M4 and crystalline substance
Body pipe M6 conducting, pull-down node PDi are charged as high level, transistor M3, transistor M10 and second transistor T2i conducting, so that
Grid signal output end G (i) and folded signal output end G (i)-Sen maintain low level state, to reduce grid signal output
Hold the noise of G (i) and folded signal output end G (i)-Sen.In this way can be when the row pixel unit be selected, first crystal
Pipe T1i conducting, and when the row pixel unit is unselected, the first transistor T1i is constantly in off state, so that control
Unit 20 processed obtains a square-wave signal, and the position being folded fast and accurately is oriented according to the square-wave signal, effectively anti-
Only there is the problem of accidentally positioning because the first transistor misleads.
Therefore, by above-mentioned example it is found that need to only increase corresponding crystalline substance on the basis of original GOA unit and the area AA
Body pipe is used in conjunction with the characteristics of pressure-sensitive double-gated transistor, and to clock signal, without arranging that detection passes again on the outside of screen
The real-time accurate update of resolution ratio can be realized in sensor, that is, can be as accurate as each line position and sets, and can be in each frame pair
Flexible display panels carry out resolution update, while having accomplished the frivolous beauty of appearance.
It should be noted that Fig. 2 and Fig. 5 are merely for convenience of the specific example that the present invention is described in detail provides,
And other circuit structures are also belonged in the protection scope of the application, and the first transistor can not only be provided at correspondence
In pixel unit, also it can be arranged directly in corresponding shift register.
In conclusion the resolution update device of flexible display panels according to an embodiment of the present invention, pressure-sensitive by adding
Double-gated transistor and the first transistor, in this way when the pull-up that pressure-sensitive double-gated transistor is pressurized and is connected with the pressure-sensitive double-gated transistor
When the clock signal that node and the first clock signal input terminal provide is high level, the voltage of public electrode passes through first crystal
Pipe output, the timing for the clock signal that control unit is provided according to the voltage of public electrode and the first clock signal input terminal at this time
Can positioning flexible display panel depressed position, and be updated according to resolution ratio of the depressed position to flexible display panels.
The device is capable of the folding position of fast and accurately positioning flexible display panel as a result, to be differentiated according to folding position
Rate updates, and eliminates the detection sensor etc. being arranged on the outside of flexible display panels, so that the frivolous beauty of appearance.
Fig. 6 is the block diagram of flexible display panels according to an embodiment of the present invention.As shown in fig. 6, the Flexible Displays
Panel 1100 includes above-mentioned resolution update device 100.
Wherein, flexible display panels 1100 can be OLED flexible display panels or LCD Electronic Paper etc..
Flexible display panels according to an embodiment of the present invention can be quickly and quasi- by above-mentioned resolution update device
It realizes the quick and precisely update to flexible display panels resolution ratio, and saves in the folding position of true positioning flexible display panel
Detection sensor being arranged on the outside of flexible display panels etc. is gone, so that the frivolous beauty of appearance.
Fig. 7 is the circuit diagram of the shift register according to an embodiment of the invention for flexible display panels.
As shown in fig. 7, the shift register includes grid signal input terminal Input, the first clock signal input terminal CLK1, reset signal
It is input terminal Reset, low level signal input terminal VGL, grid signal output end G (i), pull-up node PU, pull-down node PD, pressure-sensitive
Double-gated transistor MA and the first transistor T1.
Wherein, the first pole of pressure-sensitive double-gated transistor MA is connected with the first clock signal input terminal CLK1, and pressure-sensitive double grid is brilliant
The control electrode of body pipe MA is connected with pull-up node PU；The first pole of the first transistor T1 pixel unit corresponding with shift register
Public electrode Vcom be connected, the control electrode of the first transistor T1 is extremely connected with the second of pressure-sensitive double-gated transistor MA, first crystalline substance
The second pole of body pipe T1 is connected with external control unit outside 40.Wherein, when pressure-sensitive double-gated transistor MA be pressurized and pull-up node PU and
When the clock signal that first clock signal input terminal CLK1 is provided is high level, the first transistor T1 conducting, public electrode
The voltage of Vcom is exported by the first transistor T1 to external control unit outside 40, so that external control unit outside 40 is according to public electrode
The compression of the timing positioning flexible display panel for the clock signal that the voltage of Vcom and the first clock signal input terminal CLK1 are provided
Position, and be updated according to resolution ratio of the depressed position to flexible display panels.
Further, according to one embodiment of present invention, as shown in figure 8, the above-mentioned shifting for flexible display panels
Bit register further include: reset circuit, reset circuit are believed with pull-down node PD, reset signal input terminal Reset, low level respectively
Number input terminal VGL is extremely connected with the second of pressure-sensitive double-gated transistor MA, and reset circuit is used in pull-down node PD or resets letter
When the reset signal that number input terminal Reset is provided is high level, the second pole of pressure-sensitive double-gated transistor MA is pulled down to low level
The low level that signal input part VGL is provided, so that the first transistor T1 is in an off state.
Still further, as shown in figure 8, reset circuit includes second transistor T2 and third transistor T3, the second crystal
The first pole of pipe T2 is extremely connected with the second of pressure-sensitive double-gated transistor MA, and the second pole of second transistor T2 and low level signal are defeated
Enter to hold VGL to be connected, the control electrode of second transistor T2 is connected with reset signal input terminal Reset；The first of third transistor T3
Pole is extremely connected with the second of pressure-sensitive double-gated transistor MA, the second pole and the low level signal input terminal VGL phase of third transistor T3
Even, the control electrode of third transistor T3 is connected with pull-down node PD.
It should be noted that the working principle of Fig. 7 and shift register shown in Fig. 8 can be found in and retouch to Fig. 2 and Fig. 5
It states, is specifically just no longer described in detail here.In addition, Fig. 7 and Fig. 8 are only used as a specific example of the invention, it is not intended as to this hair
Bright one is specific to be limited, as long as increasing pressure-sensitive double-gated transistor and first crystal on the basis of existing shift register
Pipe, and make full use of the clock signal of shift register, it is possible to enough quick and precisely positioning realized to flexible display panels, from
And realize the quick update of resolution ratio.
Shift register according to an embodiment of the present invention for flexible display panels, by by pressure-sensitive double-gated transistor
First pole is connected with the first clock signal input terminal, and the control electrode of pressure-sensitive double-gated transistor is connected with pull-up node, and
The public electrode of first pole of the first transistor pixel unit corresponding with shift register is connected, and by the first transistor
Control electrode is extremely connected with the second of pressure-sensitive double-gated transistor, in this way when the compression of pressure-sensitive double-gated transistor and pull-up node and first
When the clock signal that clock signal input part provides is high level, the voltage of public electrode is exported by the first transistor to outside
Control unit, the clock signal provided so as to external control unit outside according to the voltage of public electrode and the first clock signal input terminal
Timing positioning flexible display panel depressed position, and the resolution ratio of flexible display panels is carried out more according to depressed position
Newly.It is capable of the folding position of fast and accurately positioning flexible display panel by the shift register as a result, according to folding
Position carries out resolution update, and eliminates the detection sensor etc. being arranged on the outside of flexible display panels, so that appearance is frivolous
It is beautiful.
Fig. 9 is the structural schematic diagram of flexible display panels according to an embodiment of the invention.As shown in figure 9, the flexibility
Display panel includes: N row pixel unit and N number of shift register.
Wherein, each shift register in N number of shift register is above-mentioned shift register (such as Fig. 7 or Fig. 8 institute
Show), wherein the grid signal input terminal of the 1st shift register is connected with enabling signal line, and the 1st shift register is answered
Position signal input part is connected with the grid signal output end of the 2nd shift register, and the grid signal of i-th of shift register is defeated
Enter end be connected with the grid signal output end of (i-1)-th shift register, the reset signal input terminal of i-th of shift register and
The grid signal output end of i+1 shift register is connected, wherein i is the integer greater than 2 and less than N.
Specifically, since the load of grid line is smaller, can generally be adopted generally for the flexible display panels of small size
With GOA unit cross-drive, i.e., a part of GOA unit drives odd-numbered line grid line, and another part GOA unit drives even number line grid
Polar curve, two parts GOA unit is not interfere with each other, but is interlocked in time, and to achieve the effect that sequence opens grid line, which claims
For unilateral driving, border width and power consumption can be saved in this way, and specific structure is as shown in Figure 9.
When using unilateral driving method, shift register 71,73 ... for driving odd-numbered line grid line, i.e., drive respectively
Dynamic pixel unit 61,63 ... grid line, while shift register 72,74 ... for driving even number line grid line, that is, distinguish
Drive pixel unit 62,64 ... grid line, and due to shift register 71,73 ... and shift register 72,74 ... mutually
Do not interfere, thus the cascade connection between the shift register in flexible display panels shown in Fig. 9 still meet it is describe above
Connection relationship.
That is, for odd-numbered line, in addition to the grid signal input terminal Input1 and enabling signal line of the 1st shift register
STV is connected, and the grid signal of the grid signal input terminal of remaining shift register shift register corresponding with lastrow is defeated
Outlet is connected, and the grid signal output end of reset signal input terminal shift register corresponding with next line is connected.Together
Sample, for even number line, again in addition to the grid signal input terminal Input2 and enabling signal line STV of the 1st shift register
It is connected, the grid signal output end of the grid signal input terminal of remaining shift register shift register corresponding with lastrow
It is connected, and the grid signal output end of reset signal input terminal shift register corresponding with next line is connected.In this way, moving
The folded signal of the folded signal output end output of bit register just will receive the reset letter of the corresponding shift register of next line
The limitation for the reset signal that number input terminal provides exists to reach even if lengthy pressure, and one also can be only exported in each frame
Secondary folded signal, i.e., each frame export the voltage of a public electrode.Moreover, the folded signal output end of shift register is not joined
With the cascade of shift register, i.e., it will not input the reset that the reset signal input terminal of the corresponding shift register of lastrow provides
The grid signal that the grid signal input terminal of signal or the corresponding shift register of next line provides, thus will not be to non-locating
Row has an impact.
Figure 10 is the working timing figure of flexible display panels shown in Fig. 9, from fig. 10 it can be seen that odd-numbered line and even number line
Interlocking in time is mainly realized by clock signal clk 1, CLK2, CLK3 and CLK4, and works as flexible display panels quilt
When folding, each frame only exports a folded signal, i.e., each frame, and external control unit outside only receives the height of a public electrode
Voltage, so that external control unit outside is fast and accurately positioned according to the high voltage of public electrode and the timing of clock signal
The line number being folded out, and then realize the update to resolution ratio, as shown in figure 11.
Wherein, it should be noted that when the pressure abundance being applied on pressure-sensitive double-gated transistor, folded signal output end
Folded signal Sen1, Sen2 of output ... it will be directly added to high level, and being slowly increased in Figure 10 is to indicate to be applied to pressure
The case where insufficient pressure on quick double-gated transistor.
In addition, large-sized flexible display panels in, since the load of grid line is bigger, in order to just normally opened
Open grid line, GOA unit uses polygon driving, i.e., for a line grid line, the right and left have a GOA unit to its into
Row charging, in the case, the circuit design of left and right GOA unit is full symmetric, referred to as bilateral driving, specific structure such as Figure 12 institute
Show, I will not elaborate.
Figure 13 is the block diagram of display equipment according to an embodiment of the present invention, as shown in figure 13, the display equipment
1200 include above-mentioned flexible display panels 200.
Display equipment according to an embodiment of the present invention can be fast and accurately real by above-mentioned flexible display panels
The update of existing resolution ratio, while the frivolous beauty of appearance can be made.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " be orientation based on the figure or
Positional relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must
There must be specific orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include at least one this feature.In the description of the present invention, the meaning of " plurality " is at least two, such as two, three
It is a etc., unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect
It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary
The interaction relationship of the connection in portion or two elements, unless otherwise restricted clearly.For those of ordinary skill in the art
For, the specific meanings of the above terms in the present invention can be understood according to specific conditions.
In the present invention unless specifically defined or limited otherwise, fisrt feature in the second feature " on " or " down " can be with
It is that the first and second features directly contact or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature be directly above or diagonally above the second feature, or be merely representative of
First feature horizontal height is higher than second feature.Fisrt feature can be under the second feature " below ", " below " and " below "
One feature is directly under or diagonally below the second feature, or is merely representative of first feature horizontal height less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It can be combined in any suitable manner in one or more embodiment or examples.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples
It closes and combines.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, modifies, replacement and variant.
Claims (10)
1. a kind of resolution update device of flexible display panels, which is characterized in that the flexible display panels include N row pixel
N number of shift register of unit and corresponding N row pixel unit setting, wherein N is the integer greater than 1, the resolution update dress
It sets and includes:
N number of detection unit, N number of detection unit phase corresponding with N number of shift register and the N row pixel unit respectively
Even, wherein each detection unit includes:
Pressure-sensitive double-gated transistor, the first pole of the pressure-sensitive double-gated transistor and the first clock signal of corresponding shift register
Input terminal is connected, and the control electrode of the pressure-sensitive double-gated transistor is connected with the pull-up node of corresponding shift register；
First pole of the first transistor, the first transistor is connected with the public electrode of corresponding pixel unit, and described first
The control electrode of transistor is extremely connected with the second of the pressure-sensitive double-gated transistor, wherein when the pressure-sensitive double-gated transistor is pressurized
And the clock signal that the pull-up node being connected with the pressure-sensitive double-gated transistor and the first clock signal input terminal provide is high electricity
Usually, the first transistor conducting, the voltage of the public electrode are exported by the first transistor；
Control unit, described control unit are extremely connected with second of the first transistor in each detection unit respectively, institute
State clock signal of the control unit for providing according to the voltage of the public electrode and first clock signal input terminal
Timing positions the depressed position of the flexible display panels, and the resolution according to the depressed position to the flexible display panels
Rate is updated.
2. the resolution update device of flexible display panels as described in claim 1, which is characterized in that further include:
N number of reset circuit, each reset circuit in N number of reset circuit respectively with pair in N number of shift register
In the pull-down node of the shift register answered, reset signal input terminal, low level signal input terminal and N number of detection unit
Corresponding pressure-sensitive double-gated transistor second it is extremely corresponding be connected, the reset circuit is used in the pull-down node or described
When the reset signal that reset signal input terminal provides is low level, the second pole of the pressure-sensitive double-gated transistor is pulled down to described
The low level that low level signal input terminal provides, so that the first transistor is in an off state.
3. the resolution update device of flexible display panels as claimed in claim 2, which is characterized in that the reset circuit packet
It includes:
Second transistor, the first pole of the second transistor are extremely connected with the second of the pressure-sensitive double-gated transistor, and described
Second pole of two-transistor is connected with the low level signal input terminal, and the control electrode of the second transistor and the reset are believed
Number input terminal is connected；
Third transistor, the first pole of the third transistor are extremely connected with the second of the pressure-sensitive double-gated transistor, and described
Second pole of three transistors is connected with the low level signal input terminal, and the control electrode of the third transistor and the drop-down save
Point is connected.
4. the resolution update device of flexible display panels as claimed in any one of claims 1-3, which is characterized in that described
The first transistor in each detection unit is arranged in corresponding pixel unit.
5. a kind of shift register for flexible display panels, which is characterized in that the shift register includes grid signal
Input terminal, the first clock signal input terminal, second clock signal input part, reset signal input terminal, low level signal input terminal,
Grid signal output end, pull-up node and pull-down node, the shift register further include:
Pressure-sensitive double-gated transistor, the first pole of the pressure-sensitive double-gated transistor are connected with first clock signal input terminal, institute
The control electrode for stating pressure-sensitive double-gated transistor is connected with the pull-up node；
The first transistor, the public electrode of the first pole of the first transistor pixel unit corresponding with the shift register
It is connected, the control electrode of the first transistor is extremely connected with the second of the pressure-sensitive double-gated transistor, the first transistor
Second pole is connected with external control unit outside, wherein
When the clock that the pressure-sensitive double-gated transistor is pressurized and the pull-up node and first clock signal input terminal provide
When signal is high level, the first transistor conducting, the voltage of the public electrode is exported by the first transistor
To the external control unit outside, so that the external control unit outside is believed according to the voltage of the public electrode and first clock
The timing for the clock signal that number input terminal provides positions the depressed position of the flexible display panels, and according to the depressed position
The resolution ratio of the flexible display panels is updated.
6. being used for the shift register of flexible display panels as claimed in claim 5, which is characterized in that further include:
Reset circuit, the reset circuit respectively with the pull-down node, the reset signal input terminal, the low level signal
Input terminal is extremely connected with the second of the pressure-sensitive double-gated transistor, and the reset circuit is used in the pull-down node or described
When the reset signal that reset signal input terminal provides is high level, the second pole of the pressure-sensitive double-gated transistor is pulled down to described
The low level that low level signal input terminal provides, so that the first transistor is in an off state.
7. being used for the shift register of flexible display panels as claimed in claim 6, which is characterized in that the reset circuit packet
It includes:
Second transistor, the first pole of the second transistor are extremely connected with the second of the pressure-sensitive double-gated transistor, and described
Second pole of two-transistor is connected with the low level signal input terminal, and the control electrode of the second transistor and the reset are believed
Number input terminal is connected；
Third transistor, the first pole of the third transistor are extremely connected with the second of the pressure-sensitive double-gated transistor, and described
Second pole of three transistors is connected with the low level signal input terminal, and the control electrode of the third transistor and the drop-down save
Point is connected.
8. a kind of flexible display panels, which is characterized in that including resolution update dress such as of any of claims 1-4
It sets.
9. a kind of flexible display panels characterized by comprising
N row pixel unit；
N number of shift register, each shift register in N number of shift register are such as any one of claim 5-7
The shift register, wherein the grid signal input terminal of the 1st shift register is connected with enabling signal line, and the described 1st
The reset signal input terminal of a shift register is connected with the grid signal output end of the 2nd shift register, the 2nd shifting
The grid signal input terminal of bit register is connected with the grid signal output end of the 1st shift register, the 2nd shifting
The reset signal input terminal of bit register is connected with the grid signal output end of the 3rd shift register, i-th of shift register
Grid signal input terminal be connected with the grid signal output end of (i-1)-th shift register, i-th of shift register
Reset signal input terminal is connected with the grid signal output end of i+1 shift register, the i+1 shift register with
N-th reset circuit is connected, wherein i is the integer greater than 2 and less than N.
10. a kind of display equipment, which is characterized in that including flexible display panels as claimed in claim 8 or 9.
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| CN107665662B (en) * | 2017-10-31 | 2020-11-13 | 厦门天马微电子有限公司 | Array substrate, display panel and driving method of array substrate |
| CN108877682B (en) * | 2018-07-18 | 2020-04-28 | 京东方科技集团股份有限公司 | Shifting register, driving method thereof and grid driving circuit |
| CN109213380A (en) * | 2018-11-12 | 2019-01-15 | 京东方科技集团股份有限公司 | Input control circuit and method, input control device, display panel |
| CN111081187B (en) * | 2020-01-06 | 2021-08-06 | 京东方科技集团股份有限公司 | Flexible display panel, curling detection method and device and display equipment |
| CN111681689B (en) * | 2020-06-30 | 2022-05-06 | 芯颖科技有限公司 | Storage circuit, driving chip and display device |
| WO2022133830A1 (en) * | 2020-12-23 | 2022-06-30 | 京东方科技集团股份有限公司 | Display panel and display apparatus |
| CN113033405B (en) * | 2021-03-26 | 2024-07-26 | 京东方科技集团股份有限公司 | Fingerprint identification circuit, driving method, touch panel and display device |
| CN114724504B (en) * | 2022-05-16 | 2023-12-12 | 京东方科技集团股份有限公司 | Shift register unit, gate driving circuit, display substrate and display device |
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| US8866840B2 (en) * | 2008-09-08 | 2014-10-21 | Qualcomm Incorporated | Sending a parameter based on screen size or screen resolution of a multi-panel electronic device to a server |
| KR20130065656A (en) * | 2010-04-22 | 2013-06-19 | 퀄컴 엠이엠에스 테크놀로지스, 인크. | Active matrix pixel with integrated processor and memory units |
| CN102968205B (en) * | 2011-08-30 | 2015-12-16 | 雅马哈株式会社 | Touch sensor and provide the controller of touch sensor |
| CN103295510B (en) * | 2012-03-05 | 2016-08-17 | 联想(北京)有限公司 | A kind of method adjusting resolution and electronic equipment |
| KR101420330B1 (en) * | 2012-06-22 | 2014-07-16 | 삼성디스플레이 주식회사 | Flexible display apparatus |
| US9715291B2 (en) * | 2013-06-18 | 2017-07-25 | Synaptics Incorporated | Pre-charging a gate electrode before resuming display updating |
| KR20160056760A (en) * | 2014-11-12 | 2016-05-20 | 크루셜텍 (주) | Flexible display apparatus able to image scan and driving method thereof |
| KR102319466B1 (en) * | 2015-02-25 | 2021-10-29 | 삼성디스플레이 주식회사 | Display device and driving method for display device using the same |
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