CN107221287B - Display panel and its pixel prosthetic device, pixel repairing method and display - Google Patents
Display panel and its pixel prosthetic device, pixel repairing method and display Download PDFInfo
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- CN107221287B CN107221287B CN201710642013.2A CN201710642013A CN107221287B CN 107221287 B CN107221287 B CN 107221287B CN 201710642013 A CN201710642013 A CN 201710642013A CN 107221287 B CN107221287 B CN 107221287B
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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
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2300/00—Aspects of the constitution of display devices
- G09G2300/04—Structural and physical details of display devices
- G09G2300/0404—Matrix technologies
- G09G2300/0413—Details of dummy pixels or dummy lines in flat panels
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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
- G09G2300/00—Aspects of the constitution of display devices
- G09G2300/08—Active matrix structure, i.e. with use of active elements, inclusive of non-linear two terminal elements, in the pixels together with light emitting or modulating elements
- G09G2300/0809—Several active elements per pixel in active matrix panels
- G09G2300/0819—Several active elements per pixel in active matrix panels used for counteracting undesired variations, e.g. feedback or autozeroing
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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
- G09G2300/00—Aspects of the constitution of display devices
- G09G2300/08—Active matrix structure, i.e. with use of active elements, inclusive of non-linear two terminal elements, in the pixels together with light emitting or modulating elements
- G09G2300/0809—Several active elements per pixel in active matrix panels
- G09G2300/0842—Several active elements per pixel in active matrix panels forming a memory circuit, e.g. a dynamic memory with one capacitor
- G09G2300/0861—Several active elements per pixel in active matrix panels forming a memory circuit, e.g. a dynamic memory with one capacitor with additional control of the display period without amending the charge stored in a pixel memory, e.g. by means of additional select electrodes
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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
- G09G2310/0243—Details of the generation of driving signals
- G09G2310/0251—Precharge or discharge of pixel before applying new pixel voltage
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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
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0209—Crosstalk reduction, i.e. to reduce direct or indirect influences of signals directed to a certain pixel of the displayed image on other pixels of said image, inclusive of influences affecting pixels in different frames or fields or sub-images which constitute a same image, e.g. left and right images of a stereoscopic display
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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
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0233—Improving the luminance or brightness uniformity across the screen
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/04—Maintaining the quality of display appearance
- G09G2320/043—Preventing or counteracting the effects of ageing
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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
- G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
- G09G2330/08—Fault-tolerant or redundant circuits, or circuits in which repair of defects is prepared
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
The invention discloses a kind of display panel and its pixel prosthetic devices, pixel repairing method and display, wherein, display panel includes multiple pixel compensation circuits, pixel prosthetic device includes: detection and positioning unit, it is positioned for detecting whether each pixel is abnormal, and to the pixel being abnormal；Pixel repairs unit, including repair line；Laser repairing unit, corresponding first in repair line is repaired second in node pixel compensation circuit corresponding with abnormal pixel for the position according to abnormal pixel and repairs node conducting, to be in off state by the corresponding light emitting diode of the corresponding pixel compensation circuit control of abnormal pixel, so that abnormal pixel becomes dim spot.Pixel prosthetic device of the invention can be when navigating to some pixel and being abnormal, become dim spot by the corresponding pixel compensation circuit control abnormal pixel of abnormal pixel to repair to pixel, so as to which part defective products display panel is become non-defective unit, the yields of display panel is promoted.
Description
Technical field
The present invention relates to display control technology field, in particular to pixel prosthetic device, the Yi Zhongxian of a kind of display panel
Show panel, a kind of display and a kind of pixel repairing method of display panel.
Background technique
OLED (the Organic of LTPS (Low Temperature Poly-silicon, low-temperature polysilicon silicon technology) glass base
Light-Emitting Diode, Organic Light Emitting Diode) display panel, the drawbacks of because of LTPS itself, drive the threshold of transistor
Threshold voltage is easy to happen drift, and this threshold voltage drift can be presented as brightness disproportionation in display effect, it is therefore desirable to carry out
Threshold voltage compensation, that is, pixel compensation can just show more uniform picture.
In the related technology, pixel compensation is carried out generally by a pixel compensation circuit is arranged for each pixel,
Also because each pixel has pixel compensation circuit, cause pixel circuit complex, the density metal in pixel is higher, manufacturing process
In it is easy to appear short circuit, open circuit phenomenon reduce display panel system so that easilying lead to display panel becomes defective products
The yields of work.
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 pixel prosthetic device of display panel, the device can navigate to some pixel occur it is different
Chang Shi becomes dim spot by the corresponding pixel compensation circuit control abnormal pixel of abnormal pixel to repair to pixel, thus
Part defective products display panel can be become non-defective unit, promote the yields of display panel.
Second object of the present invention is to propose a kind of display panel.
Third object of the present invention is to propose a kind of display.
Fourth object of the present invention is to propose a kind of pixel repairing method of display panel.
In order to achieve the above objectives, first aspect present invention embodiment proposes a kind of pixel prosthetic device of display panel,
The display panel includes multiple pixel compensation circuits, and each pixel compensation circuit in the multiple pixel compensation circuit is corresponding
One pixel setting, the corresponding light emitting diode of each pixel, each pixel compensation circuit include driving transistor, and
Each pixel compensation circuit is carried out luminous by the corresponding light emitting diode of corresponding driving transistor driving, and the pixel is repaired
Apparatus for coating includes: detection and positioning unit, and the detection and positioning unit are used to detect whether each pixel is abnormal, and right
The pixel being abnormal is positioned to obtain the position of abnormal pixel；Pixel repairs unit, and the pixel repairs unit and includes
Repair line；Laser repairing unit, the laser repairing unit are used for the repair line according to the position of the abnormal pixel
Corresponding first repair in corresponding with the abnormal pixel pixel compensation circuit of node second repair node and be connected, to pass through
The corresponding light emitting diode of the corresponding pixel compensation circuit control of the abnormal pixel is in off state, so that the abnormal pixel
As dim spot.
The pixel prosthetic device of display panel according to an embodiment of the present invention detects each picture by detection and positioning unit
Whether element is abnormal, and is positioned to the pixel being abnormal to obtain the position of abnormal pixel, laser repairing unit root
Corresponding first in repair line is repaired in node pixel compensation circuit corresponding with abnormal pixel according to the position of abnormal pixel
Second repairs node conducting, to be in cut-off shape by the corresponding light emitting diode of the corresponding pixel compensation circuit control of abnormal pixel
State, so that abnormal pixel becomes dim spot.The device can become part defective products display panel non-defective unit as a result, promote display
The yields of panel.
In addition, the pixel prosthetic device of the display panel proposed according to that above embodiment of the present invention can also have it is following attached
The technical characteristic added:
According to one embodiment of present invention, it further includes the first reparation transistor that the pixel, which repairs unit, and described first
The first end for repairing transistor is connected with high level power end, and described first repairs the control terminal and luminous signal end phase of transistor
Even, the second end of the first reparation transistor is connected with the repair line, and first repairs node each of in the repair line
It is corresponding that node is repaired with second in each pixel compensation circuit, wherein second in each pixel compensation circuit repairs
Node is the control terminal that transistor is driven in each pixel compensation circuit.
According to one embodiment of present invention, it further includes the second reparation transistor that the pixel, which repairs unit, and described second
The first end for repairing transistor is connected with low level power end, and described second repairs the control terminal and luminous signal end phase of transistor
Even, the second end of the second reparation transistor is connected with the repair line, and first repairs node each of in the repair line
It is corresponding that node is repaired with second in each pixel compensation circuit, wherein second in each pixel compensation circuit repairs
Node is the compensation output end being connected in each pixel compensation circuit with the anode of corresponding light emitting diode.
According to one embodiment of present invention, when the multiple pixel compensation circuit is using n row m column setting, the picture
It is n that element, which repairs unit, and n pixel repairs unit and correspond to the setting of n row pixel compensation circuit, wherein n and m is positive integer.
According to one embodiment of present invention, the light emitting diode is OLED.
In order to achieve the above objectives, second aspect of the present invention embodiment proposes a kind of display panel, including the present invention is implemented
The pixel prosthetic device of display panel described in example first aspect.
Display panel according to an embodiment of the present invention can be fixed by the pixel prosthetic device of above-mentioned display panel
When position is abnormal to some pixel, dim spot is become with right by the corresponding pixel compensation circuit control abnormal pixel of abnormal pixel
Pixel is repaired, and so as to which part defective products display panel is become non-defective unit, promotes yields.
In order to achieve the above objectives, third aspect present invention embodiment proposes a kind of display, including second party of the present invention
Display panel described in the embodiment of face.
Display according to an embodiment of the present invention can be occurred by above-mentioned display panel navigating to some pixel
When abnormal, by the corresponding pixel compensation circuit control abnormal pixel of abnormal pixel as dim spot to be repaired to pixel, from
And part defective products display can be become non-defective unit, promote the yields of display.
In order to achieve the above objectives, fourth aspect present invention embodiment proposes a kind of pixel repairing method of display panel,
The display panel includes multiple pixel compensation circuits, and each pixel compensation circuit in the multiple pixel compensation circuit is corresponding
One pixel setting, the corresponding light emitting diode of each pixel, each pixel compensation circuit include driving transistor, and
Each pixel compensation circuit is carried out luminous by the corresponding light emitting diode of corresponding driving transistor driving, and the pixel is repaired
Compound method is the following steps are included: detect whether each pixel is abnormal, and positioned the pixel being abnormal to obtain
The position of abnormal pixel；Corresponding first in repair line is repaired into node and the extraordinary image according to the position of the abnormal pixel
Second in the corresponding pixel compensation circuit of element repairs node conducting, to pass through the corresponding pixel compensation circuit of the abnormal pixel
It controls corresponding light emitting diode and is in off state, so that the abnormal pixel becomes dim spot.
The pixel repairing method of display panel according to an embodiment of the present invention, it is different by the way that whether each pixel of detection occurs
Often, and to the pixel being abnormal it is positioned to obtain the position of abnormal pixel, then, will be repaired according to the position of abnormal pixel
Corresponding first on multiple line repairs the second reparation node conducting in node pixel compensation circuit corresponding with abnormal pixel, with logical
It crosses the corresponding light emitting diode of the corresponding pixel compensation circuit control of abnormal pixel and is in off state, so that abnormal pixel becomes dark
Point.Part defective products display panel can be become non-defective unit by this method as a result, promote the yields of display panel.
In addition, the pixel repairing method of the display panel proposed according to that above embodiment of the present invention can also have it is following attached
The technical characteristic added:
According to one embodiment of present invention, the first reparation transistor is additionally provided on the display panel, described first repairs
The first end of complex crystal pipe is connected with high level power end, and described first repairs the control terminal and luminous signal end phase of transistor
Even, the second end of the first reparation transistor is connected with the repair line, and first repairs node each of in the repair line
It is corresponding that node is repaired with second in each pixel compensation circuit, wherein second in each pixel compensation circuit repairs
Node is the control terminal that transistor is driven in each pixel compensation circuit.
According to one embodiment of present invention, the second reparation transistor is additionally provided on the display panel, described second repairs
The first end of complex crystal pipe is connected with low level power end, and described second repairs the control terminal and luminous signal end phase of transistor
Even, the second end of the second reparation transistor is connected with the repair line, and first repairs node each of in the repair line
It is corresponding that node is repaired with second in each pixel compensation circuit, wherein second in each pixel compensation circuit repairs
Node is the compensation output end being connected in each pixel compensation circuit with the anode of corresponding light emitting diode.
According to one embodiment of present invention, when the multiple pixel compensation circuit is using n row m column setting, the picture
It is n that element, which repairs unit, and n pixel repairs unit and correspond to the setting of n row pixel compensation circuit, wherein n and m is positive integer.
According to one embodiment of present invention, the light emitting diode is OLED.
Detailed description of the invention
Above-mentioned and/or additional aspect and advantage of the invention will become from the following description of the accompanying drawings of embodiments
Obviously and it is readily appreciated that, wherein
Fig. 1 a-1b is the circuit topology figure of the pixel prosthetic device of display panel according to an embodiment of the invention；
Fig. 2 is the timing diagram of pixel compensation circuit according to an embodiment of the invention；
Fig. 3 a-3b is the Principles signal of the pixel prosthetic device of display panel according to an embodiment of the invention
Figure；And
Fig. 4 is the flow chart of the pixel repairing method of display panel according to an embodiment of the 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 drawing come describe the embodiment of the present invention display panel pixel prosthetic device, display panel, display
The pixel repairing method of device and display panel.
Fig. 1 a-1b is the circuit topology figure of the pixel prosthetic device of display panel according to an embodiment of the invention.Its
In, display panel includes multiple pixel compensation circuits 10；Pixel prosthetic device includes: that detection and positioning unit be not (specific in figure
Show), pixel repair unit and laser repairing unit (not specifically illustrated in figure).
Wherein, the corresponding pixel setting of each pixel compensation circuit 10 in multiple pixel compensation circuits 10, each picture
The corresponding light emitting diode D of element, each pixel compensation circuit includes driving transistor T7, and each pixel compensation circuit passes through
It is luminous that corresponding driving transistor T7 drives corresponding light emitting diode D to carry out.
Detection and positioning unit position the pixel being abnormal for detecting whether each pixel is abnormal
To obtain the position of abnormal pixel.It includes repair line L that pixel, which repairs unit,.Laser repairing unit is used for the position according to abnormal pixel
Set the second reparation section repaired in node N1 pixel compensation circuit 10 corresponding with abnormal pixel by corresponding first of L in repair line
Point N2 conducting is in off state to control corresponding light emitting diode D by the corresponding pixel compensation circuit 10 of abnormal pixel, with
Abnormal pixel is set to become dim spot.
Specifically, display panel includes multiple pixel compensation circuits 10, the corresponding pixel of each pixel compensation circuit 10
Setting, detection and positioning unit can judge whether each pixel is abnormal by Array Test (array test), and right
The pixel being abnormal is positioned.For example, the pixel in the region of pixel compensation circuit 10 shown in Fig. 1 a-1b is abnormal,
Laser repairing unit N1 and N2 can be connected, thus end the light emitting diode D in corresponding pixel compensation circuit 10, into
And abnormal pixel is made to become dim spot.Thus, it is possible to which part defective products display panel is become non-defective unit, the non-defective unit of display panel is promoted
Rate.
As shown in Fig. 1 a-1b, pixel compensation circuit 10 can also include: data line Data, grid line Gate, the first power supply
VDD, second source VSS, reference signal end Vref, storage capacitance Cst, reseting controling end Reset, reset signal end Vint,
One transistor T1, second transistor T2, third transistor T3, the 4th transistor T4, light emitting control end EM, the 5th transistor T5 and
6th transistor T6.Wherein, data line Data provides data voltage Vdata, and grid line Gate provides scanning voltage, the first power supply
VDD provides the first supply voltage, and second source VSS provides second source voltage, and reference signal end Vref provides reference voltage.Respectively
The connection type of device is for details, reference can be made to Fig. 1 a-1b, and details are not described herein again.
As shown in Fig. 2, the pixel compensation circuit 10 of the embodiment of the present invention includes three phases when working:
First stage t1: reseting controling end Reset signal is effective, T1, and the both ends storage capacitance Cst are answered in T2 conducting
Position.At this point, voltage Vint is written in the first end 1 of storage capacitance Cst, the first end 2 of storage capacitance Cst is reference voltage Vref.
Second stage t2: grid line Gate signal is effective, so that T3, T4 are connected, the second end 2 of storage capacitance Cst is written
Vdd-Vth is written in the first end 1 of Vdata, storage capacitance Cst, and the voltage of storage capacitance Cst storage at this time is Vdd-Vth-
Vdata.This stage T3 will include the first supply voltage VDD and drive the threshold voltage vt h of transistor T7 that storage capacitance Cst is written
First end 1.
Phase III t3: the signal of light emitting control end EM is effective, T5, T6 conducting, T5 connection reference signal line ref, storage
The current potential of the first end 2 of capacitor Cst is Vref, and the current potential of the first end 1 of storage capacitance Cst is Vdd-Vth-Vdata+
Vref, this namely drives the grid potential of transistor T7, and the source potential of driving transistor T7 is Vdd, and gate source voltage Vgs is
Vdd-Vth-Vdata+Vref-Vdd, the electric current for flowing to D is I=1/2 μ Cox (W/L) (Vgs-Vth)2=1/2 μ Cox (W/
L) (Vref-Vdata)2.Wherein, μ is carrier mobility, and Cox is gate oxide capacitance, and W/L is the width for driving transistor T7
Long ratio.
It is appreciated that driving transistor T7, the first transistor T1, second transistor T2, third crystalline substance in above-described embodiment
Body pipe T3, the 4th transistor T4, the 5th transistor T5, the 6th transistor T6 are P-type transistor.It can certainly be N-type, or
The combination of p-type and N-type, only the useful signal at grid control signal end is different.Those skilled in the art can be according to transistor
The contents such as type, signal connection type be apparent from the working principle and state of pixel compensation circuit 10.
As an example, as shown in Figure 1a, it can also include the first reparation transistor T8 that pixel, which repairs unit, and first repairs
The first end of complex crystal pipe T8 is connected with high level power end VGH, and first repairs the control terminal of transistor T8 and luminous signal end
EM be connected, first reparation transistor T8 second end be connected with repair line L, each of on repair line L first reparation node N1 and
Second in each pixel compensation circuit 10, which repairs node N2, corresponds to, wherein second in each pixel compensation circuit 10 repairs
Node N2 is the control terminal that transistor T8 is driven in each pixel compensation circuit.
Specifically, when detection and positioning unit detect that the pixel of pixel compensation circuit 10 shown in Fig. 1 a is abnormal
When, laser repairing unit N1 can be connected with N2 according to the position of abnormal pixel, and luminous signal end EM provides low level signal
So that T8 is connected, VGH signal can be conducted to N2 by N1, therefore be high level signal at N2, that is, drive the grid of transistor T7 (i.e.
Control terminal) it is high level signal, T7 is closed, and no current flows into light emitting diode D, and light emitting diode D is that off state does not shine,
Therefore, abnormal pixel becomes dim spot.Thus, it is possible to which part defective products display panel is become non-defective unit, the good of display panel is promoted
Product rate.
As another example, as shown in Figure 1 b, pixel repair unit can also include second repair transistor T9, second
The first end for repairing transistor T9 is connected with low level power end VGL, and second repairs the control terminal and luminous signal of transistor T9
EM is held to be connected, the second end of the second reparation transistor T9 is connected with repair line L, and first repairs node N1 each of on repair line L
It is corresponding that node N2 is repaired with second in each pixel compensation circuit, wherein second in each pixel compensation circuit repairs section
Point N2 is the compensation output end being connected in each pixel compensation circuit with the anode of corresponding light emitting diode D.
Specifically, as shown in Figure 1 b, when detection and positioning unit detect the picture of pixel compensation circuit 10 shown in Fig. 1 b
When element is abnormal, laser repairing unit N1 can be connected with N2 according to the position of abnormal pixel, and luminous signal end EM is provided
For low level signal so that T9 is connected, VGL signal can be conducted to N2 by N1.Therefore, the anode of light emitting diode D is low level letter
Number, the VSS signal than light emitting diode D cathode is more negative, light emitting diode D be off state do not shine, therefore, abnormal pixel at
For dim spot.Thus, it is possible to which part defective products display panel is become non-defective unit, the yields of display panel is promoted.
In an embodiment of the present invention, as shown in Figure 3 a-3b, when multiple pixel compensation circuits 10 are using n row m column setting
When, it is n that pixel, which repairs unit, and n pixel repairs unit and correspond to the setting of n row pixel compensation circuit 10, wherein n and m are positive
Integer.
Specifically, if display panel includes n row m column pixel compensation circuit 10, if using mode shown in Fig. 3 a into
The reparation of n pixel of m X can be completed then only needing the VGH signal on n row repair line L in row abnormal pixel reparation；If adopted
The mode shown in Fig. 3 b carries out abnormal pixel reparation, then only needing the VGL signal on n row repair line L, can be completed m X n
The reparation of pixel.
It should be noted that in an embodiment of the present invention, light emitting diode can be OLED.
In conclusion the pixel prosthetic device of display panel according to an embodiment of the present invention, passes through detection and positioning unit
It detects whether each pixel is abnormal, and the pixel being abnormal is positioned to obtain the position of abnormal pixel, laser
It repairs unit and corresponding first in repair line is repaired by node pixel benefit corresponding with abnormal pixel according to the position of abnormal pixel
It repays second in circuit and repairs node conducting, to pass through the corresponding light emitting diode of the corresponding pixel compensation circuit control of abnormal pixel
In off state, so that abnormal pixel becomes dim spot.Part defective products display panel can be become good by the device as a result,
Product promote the yields of display panel.
The embodiment of the present invention also proposes a kind of display panel, the pixel prosthetic device including above-mentioned display panel.
Display panel according to an embodiment of the present invention can be fixed by the pixel prosthetic device of above-mentioned display panel
When position is abnormal to some pixel, dim spot can be become by the corresponding pixel compensation circuit control abnormal pixel of abnormal pixel
To repair to pixel, so as to which part defective products display panel is become non-defective unit, yields is promoted.
The embodiment of the present invention also proposes a kind of display, including above-mentioned display panel.
Display according to an embodiment of the present invention can be occurred by above-mentioned display panel navigating to some pixel
When abnormal, by the corresponding pixel compensation circuit control abnormal pixel of abnormal pixel as dim spot to be repaired to pixel, from
And part defective products display can be become non-defective unit, promote the yields of display.
Fig. 4 is the flow chart of the pixel repairing method of display panel according to an embodiment of the invention.Wherein, as schemed
Shown in 1a-1b, display panel includes multiple pixel compensation circuits, each pixel compensation circuit pair in multiple pixel compensation circuits
A pixel setting is answered, the corresponding light emitting diode of each pixel, each pixel compensation circuit includes driving transistor, and every
A pixel compensation circuit is carried out luminous by the corresponding light emitting diode of corresponding driving transistor driving；As shown in figure 4, pixel is repaired
Compound method the following steps are included:
S1, detects whether each pixel is abnormal, and is positioned the pixel being abnormal to obtain abnormal pixel
Position.
Corresponding first in repair line is repaired node pixel corresponding with abnormal pixel according to the position of abnormal pixel by S2
Second in compensation circuit repairs node conducting, to pass through the corresponding light-emitting diodes of the corresponding pixel compensation circuit control of abnormal pixel
Pipe is in off state, so that abnormal pixel becomes dim spot.
Specifically, display panel includes multiple pixel compensation circuits, the corresponding pixel setting of each pixel compensation circuit,
It can judge whether each pixel is abnormal by Array Test (array test), and the pixel being abnormal is determined
Position.For example, the pixel of pixel compensation circuit region shown in Fig. 1 a-1b is abnormal, it can be by by laser repairing technology
One, which repairs node and second, repairs node conducting, to make the light emitting diode in corresponding pixel compensation circuit end, in turn
Abnormal pixel is set to become dim spot.Thus, it is possible to which part defective products display panel is become non-defective unit, the non-defective unit of display panel is promoted
Rate.
And specifically the structure and working principle of pixel compensation circuit can refer to the above embodiment of the present invention, it is no longer superfluous herein
It states.
As an example, as shown in Figure 1a, it can also include the first reparation transistor that pixel, which repairs unit, and first repairs
The first end of transistor is connected with high level power end, and the control terminal of the first reparation transistor is connected with luminous signal end, and first
The second end for repairing transistor is connected with repair line, and first repairs in node and each pixel compensation circuit each of in repair line
Second to repair node corresponding, wherein second in each pixel compensation circuit to repair node be in each pixel compensation circuit
Drive the control terminal of transistor.
It specifically, can be according to extraordinary image when the pixel for detecting pixel compensation circuit shown in Fig. 1 a is abnormal
First reparation node is connected with the second reparation node for the position of element, and luminous signal end provides low level signal so that first repairs
Transistor turns, high level signal can be conducted to the second reparation node by the first reparation node, therefore be at the second reparation node
High level signal, the i.e. grid (i.e. control terminal) of driving transistor are high level signal, and driving transistor is closed, and no current flows into
Light emitting diode, light emitting diode are that off state does not shine, and therefore, abnormal pixel becomes dim spot.Thus, it is possible to not part
Non-defective unit display panel becomes non-defective unit, promotes the yields of display panel.
As another example, as shown in Figure 1 b, it can also include the second reparation transistor that pixel, which repairs unit, and second repairs
The first end of complex crystal pipe is connected with low level power end, and the control terminal of the second reparation transistor is connected with luminous signal end, the
The second end of two reparation transistors is connected with repair line, and first repairs node and each pixel compensation circuit each of in repair line
In second to repair node corresponding, wherein second in each pixel compensation circuit to repair node be each pixel compensation circuit
In the compensation output end that is connected with the anode of corresponding light emitting diode.
It specifically, as shown in Figure 1 b, can be with when the pixel for detecting pixel compensation circuit shown in Fig. 1 b is abnormal
According to the position of abnormal pixel by first reparation node with second repair node be connected, luminous signal end provide low level signal with
Make the second reparation transistor turns, low level signal can be conducted to the second reparation node by the first reparation node.Therefore, luminous two
The anode of pole pipe be low level signal, it is more negative than the level signal of light-emitting diodes tube cathode, light emitting diode be off state not
It shines, therefore, abnormal pixel becomes dim spot.Thus, it is possible to which part defective products display panel is become non-defective unit, display panel is promoted
Yields.
In an embodiment of the present invention, as shown in Figure 3 a-3b, when multiple pixel compensation circuits are using n row m column setting,
It is n that pixel, which repairs unit, and n pixel repairs unit and correspond to the setting of n row pixel compensation circuit 10, wherein n and m is positive whole
Number.
Specifically, if display panel includes n row m column pixel compensation circuit, if carried out using mode shown in Fig. 3 a
The reparation of n pixel of m X can be completed then only needing the high level signal in n row repair line in abnormal pixel reparation；If adopted
The mode shown in Fig. 3 b carries out abnormal pixel reparation, then only needing the low level signal in n row repair line, m X n can be completed
The reparation of a pixel.
It should be noted that in an embodiment of the present invention, light emitting diode can be OLED.
In conclusion the pixel repairing method of display panel according to an embodiment of the present invention, is by detecting each pixel
It is no to be abnormal, and the pixel being abnormal is positioned to obtain the position of abnormal pixel, then, according to abnormal pixel
Corresponding first in repair line is repaired second in node pixel compensation circuit corresponding with abnormal pixel and repairs node in position
Conducting, to be in off state by the corresponding light emitting diode of the corresponding pixel compensation circuit control of abnormal pixel, so that abnormal
Pixel becomes dim spot.Part defective products display panel can be become non-defective unit by this method as a result, promote the yield of display panel.
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 (8)
1. a kind of pixel prosthetic device of display panel, which is characterized in that the display panel includes multiple pixel compensation circuits,
The corresponding pixel setting of each pixel compensation circuit in the multiple pixel compensation circuit, each pixel corresponding one shines
Diode, each pixel compensation circuit includes driving transistor, and each pixel compensation circuit passes through corresponding drive
The dynamic corresponding light emitting diode of transistor driving carries out luminous, and the pixel prosthetic device includes:
Detection and positioning unit, the detection and positioning unit are used to detect whether each pixel is abnormal, and different to occurring
Normal pixel is positioned to obtain the position of abnormal pixel；
Pixel repairs unit, and it includes repair line that the pixel, which repairs unit,；
Laser repairing unit, the laser repairing unit are used for the phase in the repair line according to the position of the abnormal pixel
Second in the first reparation node pixel compensation circuit corresponding with the abnormal pixel is answered to repair node conducting, by described
The corresponding light emitting diode of the corresponding pixel compensation circuit control of abnormal pixel is in off state, so that the abnormal pixel becomes
Dim spot；
It further includes the first reparation transistor that the pixel, which repairs unit, and described first repairs the first end of transistor and high level electricity
Source is connected, and the control terminal of the first reparation transistor is connected with luminous signal end, and described first repairs the second of transistor
End is connected with the repair line, and the first reparation node is repaired with second in each pixel compensation circuit each of in the repair line
Knot cluster point is corresponding, wherein the second reparation node in each pixel compensation circuit is to drive in each pixel compensation circuit
The control terminal of transistor.
2. the pixel prosthetic device of display panel as described in claim 1, which is characterized in that when the multiple pixel compensation electricity
When road arranges setting using n row m, it is n that the pixel, which repairs unit, and n pixel reparation unit corresponds to n row pixel compensation circuit and set
It sets, wherein n and m is positive integer.
3. the pixel prosthetic device of display panel as described in claim 1, which is characterized in that the light emitting diode is
OLED。
4. a kind of display panel, which is characterized in that the pixel including display panel as claimed in any one of claims 1-3 is repaired
Apparatus for coating.
5. a kind of display, which is characterized in that including display panel as claimed in claim 4.
6. a kind of pixel repairing method of display panel, which is characterized in that the display panel includes multiple pixel compensation circuits,
The corresponding pixel setting of each pixel compensation circuit in the multiple pixel compensation circuit, each pixel corresponding one shines
Diode, each pixel compensation circuit includes driving transistor, and each pixel compensation circuit passes through corresponding drive
The dynamic corresponding light emitting diode of transistor driving carry out it is luminous, the pixel repairing method the following steps are included:
It detects whether each pixel is abnormal, and the pixel being abnormal is positioned to obtain the position of abnormal pixel；
Corresponding first in repair line is repaired into node picture corresponding with the abnormal pixel according to the position of the abnormal pixel
Second in plain compensation circuit repairs node conducting, accordingly to be sent out by the corresponding pixel compensation circuit control of the abnormal pixel
Optical diode is in off state, so that the abnormal pixel becomes dim spot；
The first reparation transistor is additionally provided on the display panel, described first repairs the first end and high level power supply of transistor
End is connected, and the control terminal of the first reparation transistor is connected with luminous signal end, and described first repairs the second end of transistor
It is connected with the repair line,
The first reparation node is corresponding with the second reparation node in each pixel compensation circuit each of in the repair line,
In, second in each pixel compensation circuit repairs the control that node is driving transistor in each pixel compensation circuit
End.
7. the pixel repairing method of display panel as claimed in claim 6, which is characterized in that when the multiple pixel compensation electricity
When road is using n row m column setting, the repair line and the first reparation transistor are respectively n, the n repair lines and institute
It states the first reparation transistor and corresponds to the setting of n row pixel compensation circuit, wherein n and m is positive integer.
8. the pixel repairing method of display panel as claimed in claim 6, which is characterized in that the light emitting diode is
OLED。
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| CN110136623A (en) * | 2019-04-26 | 2019-08-16 | 武汉华星光电半导体显示技术有限公司 | Display panel and display device |
| CN110459578B (en) * | 2019-08-21 | 2022-06-10 | 合肥鑫晟光电科技有限公司 | Display substrate, preparation method and repair method thereof and display device |
| CN112466255A (en) * | 2020-11-23 | 2021-03-09 | 上海和辉光电股份有限公司 | Method for repairing pixel circuit of active matrix organic light-emitting display |
| CN114049861A (en) * | 2021-11-16 | 2022-02-15 | 北京集创北方科技股份有限公司 | LED display screen control method, device, equipment and system |
| CN114141843B (en) * | 2021-11-29 | 2023-06-02 | 深圳市华星光电半导体显示技术有限公司 | Display panel and display device |
| CN114120908B (en) * | 2021-12-07 | 2022-09-27 | 深圳市华星光电半导体显示技术有限公司 | Display panel, pixel repairing device and pixel repairing method thereof |
| CN114333695A (en) * | 2021-12-27 | 2022-04-12 | 武汉天马微电子有限公司 | Display panel, repairing method and display device |
| CN114495832B (en) * | 2022-02-07 | 2023-03-28 | 深圳市华星光电半导体显示技术有限公司 | Pixel driving circuit and display panel |
| CN115188327A (en) * | 2022-06-09 | 2022-10-14 | 深圳市华星光电半导体显示技术有限公司 | Voltage regulation method and device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1971939A (en) * | 2005-11-25 | 2007-05-30 | 三星电子株式会社 | Display device and manufacturing method of display device |
| CN102437112A (en) * | 2011-12-15 | 2012-05-02 | 昆山工研院新型平板显示技术中心有限公司 | Method for repairing pixel circuit of active matrix organic light emitting display substrate |
| CN104183621A (en) * | 2013-05-22 | 2014-12-03 | 三星显示有限公司 | Organic light-emitting display apparatus and method of repairing the same |
| CN105845085A (en) * | 2016-05-27 | 2016-08-10 | 京东方科技集团股份有限公司 | Pixel circuit, method for repairing pixel bright spot and display device |
| CN106941135A (en) * | 2017-04-11 | 2017-07-11 | 武汉华星光电技术有限公司 | The method for repairing and mending and organic electroluminescence display panel of a kind of organic electroluminescence display panel |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4569194B2 (en) * | 2004-04-28 | 2010-10-27 | ソニー株式会社 | Light emitting device repair method and manufacturing method, light emitting device repair device and manufacturing apparatus |
| KR101286094B1 (en) * | 2010-09-15 | 2013-07-15 | 엘지디스플레이 주식회사 | Method of fabricating organic electroluminescent device and Method of repairing the same |
| KR102112649B1 (en) * | 2013-11-25 | 2020-05-19 | 엘지디스플레이 주식회사 | Organic electro luminescent device and repair method of the same |
| KR20150142820A (en) * | 2014-06-11 | 2015-12-23 | 삼성디스플레이 주식회사 | Pixel, display device comprising the same and driving method thereof |
-
2017
- 2017-07-31 CN CN201710642013.2A patent/CN107221287B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1971939A (en) * | 2005-11-25 | 2007-05-30 | 三星电子株式会社 | Display device and manufacturing method of display device |
| CN102437112A (en) * | 2011-12-15 | 2012-05-02 | 昆山工研院新型平板显示技术中心有限公司 | Method for repairing pixel circuit of active matrix organic light emitting display substrate |
| CN104183621A (en) * | 2013-05-22 | 2014-12-03 | 三星显示有限公司 | Organic light-emitting display apparatus and method of repairing the same |
| CN105845085A (en) * | 2016-05-27 | 2016-08-10 | 京东方科技集团股份有限公司 | Pixel circuit, method for repairing pixel bright spot and display device |
| CN106941135A (en) * | 2017-04-11 | 2017-07-11 | 武汉华星光电技术有限公司 | The method for repairing and mending and organic electroluminescence display panel of a kind of organic electroluminescence display panel |
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