CN113990254A - Display panel, display device and pixel repairing method - Google Patents

Display panel, display device and pixel repairing method Download PDF

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Publication number
CN113990254A
CN113990254A CN202111465348.4A CN202111465348A CN113990254A CN 113990254 A CN113990254 A CN 113990254A CN 202111465348 A CN202111465348 A CN 202111465348A CN 113990254 A CN113990254 A CN 113990254A
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CN
China
Prior art keywords
pixel
electrically connected
circuit
line
repairing
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Pending
Application number
CN202111465348.4A
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Chinese (zh)
Inventor
张蒙蒙
李玥
周星耀
黄静
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Wuhan Tianma Microelectronics Co Ltd
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Wuhan Tianma Microelectronics Co Ltd
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Priority to CN202111465348.4A priority Critical patent/CN113990254A/en
Publication of CN113990254A publication Critical patent/CN113990254A/en
Pending legal-status Critical Current

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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]
    • 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
    • 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)
  • Control Of El Displays (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

The embodiment of the application provides a display panel, a display device and a pixel repairing method, wherein the display panel comprises a plurality of pixels, a pixel repairing circuit, a pixel data line, a first repairing line, a second repairing line and a first switch; the pixel repairing circuit is used for repairing a defective pixel, the pixel data line is electrically connected with the pixel circuit in the pixel, and the first data line is electrically connected with the pixel repairing circuit; the first repairing line is overlapped with the pixel data line, the second repairing line is overlapped with the output end of the pixel repairing circuit, and the second repairing line is overlapped with the input end of the light-emitting device in the corresponding pixel; the output end of the first switch is electrically connected with the first data line, and the input end of the first switch is electrically connected with the first repairing line. In this application, pixel repair circuit can restore corresponding defective pixel, because the setting of first switch, when only being restoreed defective pixel is luminous, it has slight difference with other pixels in luminance, is difficult for being perceived by the user, has guaranteed display effect.

Description

Display panel, display device and pixel repairing method
[ technical field ] A method for producing a semiconductor device
The present disclosure relates to the field of display technologies, and in particular, to a display panel, a display device, and a pixel repairing method.
[ background of the invention ]
During the fabrication and use of an organic light-emitting diode (OLED) display panel, a pixel circuit in a pixel may be defective. In this case, the pixel having the defect may be not controlled by the scan signal or the data signal and may always emit light, or the pixel having the defect may always display black. This causes an abnormality in the display screen.
[ application contents ]
In view of the above, embodiments of the present disclosure provide a display panel, a display device and a pixel repairing method to solve the above problems.
In a first aspect, an embodiment of the present application provides a display panel, including a plurality of pixels, a pixel repair circuit, a plurality of data lines, a first repair line, a second repair line, and a first switch; the pixel includes a pixel circuit and a light emitting device; the pixel repair circuit is used for repairing the defective pixel; the plurality of data lines comprise pixel data lines and first data lines, the pixel data lines are electrically connected with the pixel circuits, and the first data lines are electrically connected with the pixel repairing circuits; the first repairing line is at least partially overlapped with the pixel data line along the thickness direction of the display panel; in the thickness direction of the display panel, the second repairing line is at least partially overlapped with the output end of the pixel repairing circuit, and the second repairing line is at least partially overlapped with the input end of the light-emitting device electrically connected with the corresponding pixel circuit; the output end of the first switch is electrically connected with the first data line, and the input end of the first switch is electrically connected with the first repairing line.
In one implementation manner of the first aspect, the display panel further includes a plurality of scan lines, and the second repair line is electrically connected to an output terminal of the pixel repair circuit; the pixel circuit corresponding to the second repairing line and the pixel repairing circuit electrically connected with the second repairing line are electrically connected with the same scanning line.
In one implementation manner of the first aspect, the first switch includes a first transistor, a source of the first transistor is electrically connected to an input of the first switch, a drain of the first transistor is electrically connected to an output terminal of the first switch, and a gate of the first transistor is electrically connected to a control terminal of the first switch.
In one implementation manner of the first aspect, the display panel is electrically connected to an integrated circuit board, and the integrated circuit board is electrically connected to the control terminal of the first switch.
In one implementation manner of the first aspect, the pixel repair circuit includes a data signal writing transistor, the plurality of scan lines includes a first scan line, and the first scan line is electrically connected to a gate of the data signal writing transistor; the first scanning line electrically connected with the pixel repairing circuit is electrically connected with the control end of a first switch electrically connected with the pixel repairing circuit, and the type of the first switch is the same as that of the channel of the data signal writing transistor.
In one implementation manner of the first aspect, the pixel repairing circuit further includes a threshold voltage grabbing transistor, the plurality of scan lines includes a second scan line, and the second scan line is electrically connected to a gate of the threshold voltage grabbing transistor;
the second scanning line electrically connected with the pixel repairing circuit is electrically connected with the control end of the first switch electrically connected with the pixel repairing circuit, and the type of the channel of the first switch is the same as that of the channel of the threshold voltage grabbing transistor.
In one implementation form of the first aspect, the threshold voltage grabbing transistor comprises a metal oxide semiconductor layer.
In one implementation manner of the first aspect, i pixel repair circuits electrically connected to the same scanning line are electrically connected to i first data lines, respectively; corresponding first switches are arranged between the i first data lines and the i first repairing lines; in the i pixel repairing circuits, the control ends of the first switches corresponding to the first data lines which are respectively and electrically connected with the i pixel repairing circuits are electrically connected with the scanning lines; wherein i is more than or equal to 2.
In one implementation form of the first aspect, the pixel repair circuit has the same circuit structure as the pixel circuit.
In a second aspect, an embodiment of the present application provides a display device, including the display panel provided in the first aspect.
In a third aspect, an embodiment of the present application provides a pixel repairing method for repairing a pixel with a defect in a display panel as provided in the first aspect, including:
confirming a defective pixel, and electrically separating a pixel circuit of the defective pixel from a light emitting device;
electrically connecting a pixel data line electrically connected with a pixel circuit in the defective pixel with a first repairing line;
electrically connecting the input end of the light-emitting device in the defective pixel with a second repairing line;
the first switch is turned on, and the first repair line is electrically connected with the first data line electrically connected with the pixel repair circuit through the first switch.
In one implementation form of the third aspect, the pixel circuits corresponding to the defective pixels and the at least one pixel repair circuit are connected in common to the same scan line.
In an implementation manner of the third aspect, a scan line, to which a pixel circuit corresponding to the defective pixel and at least one pixel repair circuit are commonly connected, includes a first scan line, and the first scan line is used to control the pixel circuit and the pixel repair circuit, which are electrically connected to the first scan line, to receive the data signal at the same time; the control end of the first switch is electrically connected with the first scanning line.
In this application, the pixel repair circuit may repair the corresponding defective pixel, that is, when the defective pixel needs to emit light, the pixel repair circuit may receive a data signal corresponding to the light emission luminance of the defective pixel, and the pixel repair circuit may operate and output a signal for driving the light emitting device in the defective pixel.
Due to the arrangement of the first switches, in any frame of picture, when only the defective pixel needs to obtain the data signal corresponding to the light-emitting brightness, the corresponding first switch is turned on, and the corresponding pixel data line is electrically connected with the first data line. Therefore, in the display of the display panel, only the repaired defective pixel has a slight difference in luminance from the other pixels, and is not easily perceived by the user. The condition that data signals are delayed by other pixels sharing the pixel data line with the repaired pixel is avoided, so that the condition that the pixels sharing the pixel data line with the repaired pixel are different from other pixels in brightness is avoided, the condition that the brightness difference is easily perceived in the display panel is avoided, and the display effect of the display panel is ensured.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic view of a display panel according to an embodiment of the present disclosure;
fig. 2 is a schematic view of another display panel provided in an embodiment of the present application;
fig. 3 is a schematic view of another display panel provided in an embodiment of the present application;
fig. 4 is an equivalent circuit diagram of a pixel repair circuit according to an embodiment of the present disclosure;
fig. 5 is an equivalent circuit diagram of another pixel repair circuit according to an embodiment of the present application;
fig. 6 is a schematic view of another display panel according to an embodiment of the present disclosure;
fig. 7 is a schematic view of another display panel provided in an embodiment of the present application;
fig. 8 is a schematic view of another display panel provided in an embodiment of the present application;
fig. 9 is a flowchart of a pixel repairing method according to an embodiment of the present application;
fig. 10 is a schematic view of another display panel provided in an embodiment of the present application;
fig. 11 is a schematic view of a display device according to an embodiment of the present disclosure.
[ detailed description ] embodiments
For better understanding of the technical solutions of the present application, the following detailed descriptions of the embodiments of the present application are provided with reference to the accompanying drawings.
It should be understood that the embodiments described are only a few embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The terminology used in the embodiments of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the examples of this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
In the description herein, it is to be understood that the terms "substantially", "approximately", "about", "substantially", and the like, as used in the claims and the examples herein, are intended to be generally accepted as not being precise, within the scope of reasonable process operation or tolerance.
It should be understood that although the terms first, second, etc. may be used to describe the scan lines, the repair lines, etc. in the embodiments of the present application, these scan lines, repair lines, etc. should not be limited to these terms. These terms are only used to distinguish scan lines, repair lines, etc. from one another. For example, the first repair line may also be referred to as a second repair line, and similarly, the second repair line may also be referred to as a first repair line, without departing from the scope of embodiments of the present application.
For the case of a defect of a pixel circuit, an existing solution is:
a pixel repair circuit is provided in the OLED display panel for repairing a defective pixel of the pixel circuit. When the pixels in the OLED display panel are abnormal, the OLED of the abnormal pixels is driven by using the pixel repairing circuit, so that the abnormal pixels are restored to be displayed normally. In this case, the first data line to which the pixel repair circuit is electrically connected to the pixel data line to which the pixel circuit in the abnormal pixel is electrically connected.
However, the length of the pixel data line is increased, which causes the parasitic capacitance of the pixel data line to be increased, and thus, signal delay occurs in all pixels receiving data signals through the pixel data line, and further, a brightness difference which is easily recognized occurs in the display panel, which affects the display effect.
The applicant provides a solution to the problems of the prior art through intensive research.
Fig. 1 is a schematic view of a display panel according to an embodiment of the present disclosure.
The embodiment of the application provides a display panel 001, and as shown in fig. 1, the display panel 001 includes a pixel 01, a pixel repair circuit 02, a plurality of data lines 03, a first repair line 04, a second repair line 05, and a first switch 06. The pixel 01 includes a pixel circuit 11 and a light emitting device 12, and the pixel circuit 11 is used for driving the light emitting device 12 to emit light.
The pixel repair circuit 02 repairs the defective pixel 01. When a pixel circuit 11 in a pixel 01 is defective, the pixel circuit 11 is disconnected from the corresponding light emitting device 12, and the pixel repair circuit 02 is electrically connected to the light emitting device 12 to drive the light emitting device 12 to emit light normally, so that the defective pixel 01 is restored to normal.
Alternatively, the pixel repair circuit 02 has the same circuit structure as the pixel circuit 11.
The plurality of data lines 03 include a pixel data line 31 and a first data line 32, the pixel data line 31 is electrically connected to the pixel circuit 11, and the first data line 32 is electrically connected to the pixel repair circuit 02.
Note that each of the pixel data line 31 and the first data line 32 may be a plurality of lines.
Alternatively, the plurality of pixel data lines 31 and the plurality of first data lines 32 are arranged along a first direction X, and the pixel data lines 31 and the first data lines 32 extend along a second direction Y, the first direction X intersecting the second direction Y. The plurality of pixel data lines 31 may be electrically connected to the plurality of columns of pixel circuits 11, respectively, and the plurality of first data lines 32 may be electrically connected to the plurality of columns of pixel repair circuits 02, respectively.
The first repair line 04 at least partially overlaps the pixel data line 31 in a thickness direction of the display panel 001. Optionally, the first repair line 04 extends in the first direction X.
When the pixel repair circuit 02 is required to repair the defective pixel 01, laser light may be used to irradiate an overlapped portion of the first repair line 04 and the pixel data line 31, and the first repair line 04 and the pixel data line 31 electrically connected to the pixel circuit 11 in the defective pixel 01 may be electrically connected, so as to realize transmission of a data signal corresponding to the pixel 01.
In the thickness direction of the display panel 001, the second repair line 05 at least partially overlaps the output terminal of the pixel repair circuit 02, and the second repair line 05 at least partially overlaps the input terminal of the light emitting device 12 to which the corresponding pixel circuit 11 is electrically connected.
When the pixel repair circuit 02 is required to repair the defective pixel 01, a laser may be used to irradiate a portion where the second repair line 05 overlaps the output terminal of the pixel repair circuit 02, electrically connecting the second repair line 05 to the output terminal of the pixel repair circuit 02. And, a portion where the second repair line 05 overlaps the input terminal of the light emitting device 12 in the defective pixel 01 is irradiated with laser light, electrically connecting the second repair line 05 with the input terminal of the light emitting device 12 in the defective pixel 01.
The pixel repair circuit 02 to which the second repair line 05 can be electrically connected and the pixel circuit 11 corresponding to the second repair line 05 can be controlled by control signals having the same function. For example, the pixel repair circuit 02 to which the second repair line 05 can be electrically connected and the pixel circuit 11 corresponding to the second repair line 05 can be controlled by a signal transmitted through the same control signal line, or can be simultaneously controlled by a signal transmitted through different control signal lines and having the same command.
Further, the pixel repair circuit 02 repairs the pixel 01 in which a defect occurs among the pixels 01 corresponding to the pixel circuits 11 whose control signals are the same. In other words, the pixel repair circuit 02 repairs the pixel 01 in which a defect occurs in the pixel 01 corresponding to the pixel circuit 11 to which the same control signal line is connected.
An input end 61 of the first switch 06 is electrically connected to the first repair line 04, and an output end 62 of the first switch 06 is electrically connected to the first data line 32.
When the pixel repair circuit 02 repairs the defective pixel 01, the first switch 06 is turned on, and the first data line 32 is electrically connected to the first repair line 04. At this time, the pixel repair circuit 02 obtains a data signal through the first data line 32, the first switch 06, the first repair line 04, and the pixel data line 31 to which the pixel circuit 11 in the defective pixel 01 is electrically connected, and the output terminal of the pixel repair circuit 02 is electrically connected to the light emitting device 12 in the defective pixel 01 through the second repair line 05, so that signal transmission between the pixel repair circuit 02 and the light emitting device 12 in the defective pixel 01 is realized.
Note that the pixel repair circuit 02 is also electrically connected to a power supply voltage signal line (not shown in the figure), the pixel repair circuit 02 may have the same circuit configuration as the pixel circuit 11 in the defective pixel 01, and the pixel repair circuit 02 may be controlled by the same control signal as the pixel circuit 11 in the defective pixel 01. Optionally, the pixel repairing circuit 02 may be electrically connected to the same control signal line as the pixel circuit 11 in the defective pixel 01, so that the pixel repairing circuit has the same operating time as the original pixel circuit 11 in the defective pixel 01, the display synchronization is better, and the display effect of the repaired display panel is improved.
When the defective pixel 01 repaired by the pixel repair circuit 02 completes data writing and threshold capture, or after the defective pixel 01 is turned on, the first switch 06 is turned off, and the first data line 32 is disconnected from the first repair line 04. That is, the first data line 32 is disconnected from the pixel data line 31 to which the pixel circuit 11 in the defective pixel 01 is electrically connected. The first data line 32 stops receiving the data signal.
It can be understood that, when the first data line 32 is electrically connected to the pixel data line 31, the length of the pixel data line 31 is increased, and usually a plurality of pixel repair circuits 11 are preset on the display panel, the first data line 32 is electrically connected to the plurality of pixel repair circuits 11, and in the pixel circuit structure, the parasitic capacitance of the data line is large, which may cause the parasitic capacitance of the pixel data line 31 to be increased, and further may cause a delay in the data signal transmitted in the pixel data line 31, thereby affecting the signal transmission effect of other normal pixels 01 electrically connected to the same pixel data line 31 as the defective pixel 01.
In the embodiment of the present application, the pixel repair circuit 02 can repair the corresponding defective pixel 01, that is, when the defective pixel 01 needs to emit light, the pixel repair circuit 02 can receive a data signal corresponding to the light emission luminance of the defective pixel, and the pixel repair circuit 02 can operate and output a signal for driving the light emitting device 12 in the defective pixel 01.
Due to the arrangement of the first switch 06, in any frame of picture, when only the defective pixel 01 needs to obtain the data signal corresponding to the light-emitting brightness, the corresponding first switch 06 is turned on and the corresponding pixel data line 31 and the first data line 32 are electrically connected. Therefore, in the display of the display panel 001, only the repaired defective pixel 01 has a slight difference in luminance from the other pixels 01, and is not easily perceived by the user. The situation that data signals are delayed in other pixels 01 sharing the pixel data line 31 with the repaired pixel 01 is avoided, the situation that the pixels 01 sharing the pixel data line 31 with the repaired pixel 01 are different from other pixels 01 in brightness is avoided, the situation that the brightness difference is easily perceived in the display panel 001 is avoided, and the display effect of the display panel 001 is guaranteed.
Fig. 2 is a schematic view of another display panel provided in an embodiment of the present application.
As shown in fig. 1 and 2, in one embodiment of the present application, the display panel 001 further includes a plurality of scan lines SS.
With reference to fig. 2, the second repair line 05 is electrically connected to the output terminal of the pixel repair circuit 02, and the pixel circuit 11 corresponding to the second repair line 05 and the pixel repair circuit 02 electrically connected to the second repair line 05 are electrically connected to the same scan line SS. Alternatively, the pixel circuit 11 corresponding to the second repair line 05 and the pixel repair circuit 02 to which the second repair line 05 is electrically connected are electrically connected to the same scan line SS.
It should be noted that the pixel circuit 11 corresponding to the second repair line 05 may refer to the pixel circuit 11 to which the light emitting device 12 of which the input terminal is at least partially overlapped with this second repair line 05 is electrically connected.
Further, the scan lines SS may extend in the first direction X, and the plurality of scan lines SS may be arranged in the second direction Y.
In the embodiment of the present application, the pixel repair circuit 02 is used to repair a defective pixel 01 in the pixels 01 corresponding to the second repair line 05 electrically connected thereto. The pixel repair circuit 02 and the corresponding pixel circuit 11 are electrically connected to the same scan line SS, so that the pixel repair circuit 02 and the corresponding pixel circuit 11 can share the same peripheral circuit for driving, which is beneficial to simplifying the design and preparation difficulty of the peripheral driving circuit. The preparation cost of the display panel 001 is saved, the picture synchronism of the pixel display is better, and the working time sequence of the repaired pixel 01 can be kept consistent with the original working time sequence.
Fig. 3 is a schematic view of another display panel provided in an embodiment of the present application.
In one embodiment of the present application, as shown in fig. 3, the first switch 06 includes a first transistor T1, a source of the first transistor T1 is electrically connected to the input terminal 61 of the first switch 06, a drain of the first transistor T1 is electrically connected to the output terminal 62 of the first switch 06, and a gate of the first transistor T1 is electrically connected to the control terminal 63 of the first switch 06.
In the embodiment of the present application, when the source and the drain of the first transistor T1 are turned on, the first switch 06 is closed. When the source and the drain of the first transistor T1 are disconnected, the first switch 06 is turned off.
Referring to fig. 3, in an embodiment of the present application, the display panel 001 is electrically connected to the integrated circuit board 002, and the integrated circuit board 002 is electrically connected to the control terminal 63 of the first switch 06.
In the present embodiment, a signal port on the integrated circuit board 002 controls the closing or opening of the first switch 06. When the pixel repair circuit 02 repairs the defective pixel 01, the integrated circuit board 002 supplies a close signal to control the first switch 06 to close. When the pixel repair circuit 02 stops repairing the defective pixel 01, the integrated circuit board 002 supplies a turn-off signal to control the first switch 06 to be turned off.
Fig. 4 is an equivalent circuit diagram of a pixel repair circuit according to an embodiment of the present disclosure, fig. 5 is an equivalent circuit diagram of another pixel repair circuit according to an embodiment of the present disclosure, and fig. 6 is a schematic diagram of another display panel according to an embodiment of the present disclosure.
As shown in fig. 4 and 5, in one embodiment of the present application, the pixel repair circuit 02 includes a data signal writing transistor T2, a source of the data signal writing transistor T2 is electrically connected to the first data line 32, and a drain of the data signal writing transistor T2 is electrically connected to the driving transistor Td. The driving transistor Td is used to generate a light emission driving current. It is understood that the data signal writing transistor T2 is used to write the data signal Vdata received by the first data line 32 to the driving transistor Td.
With continued reference to fig. 4, the pixel repair circuit 02 may further include a first reset transistor T0, a power voltage transistor T3, a threshold voltage capture transistor T4, a light emission control transistor T5, a second reset transistor T6, and a storage capacitor C0. Note that the driving transistor Td, the first reset transistor T0, the second reset transistor T6, the data signal writing transistor T2, the power supply voltage transistor T3, the threshold voltage grasping transistor T4, and the light emission controlling transistor T5 in the pixel repair circuit 02 shown in fig. 4 are all P-type thin film transistors. In other alternative embodiments, the driving transistor Td, the first reset transistor T0, the second reset transistor T6, the data signal writing transistor T2, the power supply voltage transistor T3, the threshold voltage grasping transistor T4, and the emission control transistor T5 may all be N-type transistors, or may be partially P-type transistors and partially N-type transistors.
The source of the first reset transistor T0 is electrically connected to the reset voltage signal line, and the drain of the first reset transistor T0 is electrically connected to the gate of the driving transistor Td and the first plate of the storage capacitor C0; the source of the second reset transistor T6 is electrically connected to the reset voltage signal line, and the drain of the second reset transistor T6 is electrically connected to the input terminal of the light emitting device 12. The source of the power-supply-voltage transistor T3 is electrically connected to the power-supply-voltage signal line and the second plate of the storage capacitor C0, and the drain of the power-supply-voltage transistor T3 is electrically connected to the source of the driving transistor Td. The source of the threshold voltage grasping transistor T4 is electrically connected to the drain of the driving transistor Td, and the drain of the threshold voltage grasping transistor T4 is electrically connected to the gate of the driving transistor Td. The source of the light emission controlling transistor T5 is electrically connected to the drain of the driving transistor Td, and the drain of the light emission controlling transistor T5 is electrically connected to the input terminal of the light emitting device 12. The drain of the data signal writing transistor T2 is electrically connected to the source of the driving transistor Td.
It should be noted that, as shown in fig. 5, the pixel repair circuit 02 may also include no threshold voltage capture transistor T4 in the pixel repair circuit 02, and in this case, the drain of the data signal write transistor T2 is electrically connected to the gate of the driving transistor Td.
The operation of the pixel repair circuit 02 shown in fig. 4 may include a reset phase, a data signal writing phase, and a light emitting phase.
In the reset phase, the first reset transistor T0 is turned on under the control of the control terminal S0, and the source thereof receives the reset voltage signal Vref, and the reset voltage signal Vref is written into the gate of the driving transistor Td. At this stage, if the second reset transistor T6 is turned on under the control of its control terminal S6 and its source receives the reset voltage signal Vref, the input terminal of the light emitting device 12 is also written with the reset voltage signal Vref.
In the data signal writing phase, the power supply voltage transistor T3 is turned off under the control of its control terminal S3 and the light emission control transistor T5 is turned off under the control of its control terminal S5, the data signal writing transistor T2 is turned on under the control of its control terminal S2 and the threshold voltage catching transistor T4 is turned on under the control of its control terminal S4.
Taking the driving transistor Td as a P-type transistor as an example, the source of the data signal writing transistor T2 receives the data signal Vdata through the first data line 31, and since the potential of the data signal Vdata is higher than the potential of the reset voltage signal Vref stored in the first storage capacitor C0, the driving transistor Td is turned on and the data signal Vdata is written into the gate of the driving transistor Td. Until the gate voltage of the driving transistor Td is Vdata | Vth | the driving transistor Td is turned off, and the storage capacitor C0 is capable of storing the voltage Vdata | Vth | electrically connected to the gate of the driving transistor Td at the end of the data signal writing period.
In addition, in another embodiment of the present application, the control terminal S6 of the second reset transistor T6 receives a turn-off signal during the reset phase; in the data signal writing phase, the control terminal S6 of the second reset transistor T6 receives the turn-on signal to control the second reset transistor T6 to turn on and the source of the second reset transistor T5 receives the reset signal, so that the reset of the input terminal of the light emitting device 12 is completed in the data signal writing phase.
In the light-emitting phase, the data signal writing transistor T2 is turned off under the control of its control terminal S2 and the threshold voltage grabbing transistor T4 is turned off under the control of its control terminal S4, the power supply voltage transistor T3 is turned on under the control of its control terminal S3 and the light-emitting control transistor T5 is turned on under the control of its control terminal S5. The source of the power voltage transistor T3 receives the power voltage signal VDD, and the power voltage signal VDD is transmitted to the source of the driving transistor Td, and the power voltage signal VDD is higher than the data signal Vdata, and the driving transistor Td generates a light-emitting driving current and transmits the light-emitting driving current to the light-emitting device 12 through the light-emitting control transistor T5.
Referring to fig. 4 and 6, the plurality of scan lines SS include a first scan line S1, the first scan line S1 is electrically connected to the gate of the data signal writing transistor T2, i.e., the first scan line S1 is connected to the control terminal S2 of the data signal writing transistor T2, and the first scan line S1 controls the data signal writing transistor T2 to be turned on or off.
The first scan line S1 electrically connected to the pixel repairing circuit 02 is electrically connected to the control terminal 63 of the first switch 06 electrically connected to the pixel repairing circuit 02, that is, the first scan line S1 controls the first switch 06 to be turned on or off. The first transistor T1 in the first switch 06 is of the same channel type as the data signal writing transistor T2. That is, the first scan line S1 controls the switching states of the first switch 06 and the data signal writing transistor T2 to be the same.
It should be noted that, when no defective pixel 01 is present in the display panel 001, the first scan line S1 may at least partially overlap the control terminal 63 of the first switch 06 along the thickness direction of the display panel 001, and when a defective pixel 01 is present in the display panel 001, the laser is used to irradiate a portion where the first scan line S1, which is electrically connected between the defective pixel 01 and the corresponding pixel repair circuit 02, overlaps the control terminal 63 of the first switch 06, and the first scan line S1 is electrically connected to the control terminal of the first switch 06.
Alternatively, the first transistor T1 and the data signal writing transistor T2 are both N-type transistors or both P-type transistors.
In the embodiment of the present application, when the pixel repairing circuit 02 repairs the defective pixel 01, the first scan line S1 controls the first switch 06 and the data signal writing transistor T2 in the pixel repairing circuit 02 to be turned on simultaneously, so that the pixel repairing circuit 02 obtains the required data signal Vdata, thereby implementing the function of repairing the defective pixel 01. When the pixel repair circuit 02 does not need to read the data signal Vdata or stop repairing the defective pixel 01, the first scan line S1 controls the first switch 06 and the data signal write transistor T2 in the pixel repair circuit 02 to be turned off at the same time, and the first data line 32 electrically connected to the pixel repair circuit 02 is disconnected from the pixel data line 31 electrically connected to the pixel circuit 11 in the defective pixel 01, so that the pixel 01 sharing the pixel data line 31 with the repaired pixel 01 is prevented from having data signal delay, and therefore the pixel 01 sharing the pixel data line 31 with the repaired pixel 01 is prevented from having luminance difference with other pixels 01, and further the display effect of the display panel 001 is ensured.
Fig. 7 is a schematic view of another display panel provided in an embodiment of the present application.
With continuing reference to fig. 4 and 6, in an embodiment of the present application, the pixel repair circuit 02 further includes a threshold voltage clamping transistor T4, and as can be seen from the above analysis, the threshold voltage clamping transistor T4 is turned on simultaneously with the data signal writing transistor T2, and the threshold voltage clamping transistor T4 is used for writing the data signal Vdata into the gate of the driving transistor Td. The plurality of scan lines SS includes a second scan line S2, the second scan line S2 is electrically connected to the gate of the threshold voltage capture transistor T4, i.e., the second scan line S2 is connected to the control terminal S4 of the threshold voltage capture transistor T4, and the second scan line S2 controls the threshold voltage capture transistor T4 to turn on or off.
The second scan line S2 electrically connected to the pixel repair circuit 02 is electrically connected to the control terminal 63 of the first switch 06 electrically connected to the pixel repair circuit 02, that is, the second scan line S2 controls the on/off of the first switch 06. The first transistor T1 in the first switch 06 is the same channel type as the threshold voltage catching transistor T4. That is, the second scan line S2 controls the switching states of the first switch 06 and the threshold voltage catching transistor T4 to be the same.
It should be noted that, when no defective pixel 01 is present in the display panel 001, the second scan line S2 may at least partially overlap the control terminal 63 of the first switch 06 along the thickness direction of the display panel 001, and when a defective pixel 01 is present in the display panel 001, the laser is used to irradiate the portion where the second scan line S2, which is electrically connected between the defective pixel 01 and the corresponding pixel repair circuit 02, overlaps the control terminal 63 of the first switch 06, and the second scan line S2 is electrically connected to the control terminal of the first switch 06.
Alternatively, as shown in fig. 4 and 6, the first transistor T1 and the threshold voltage catching transistor T4 are both P-type transistors. Alternatively, as shown in fig. 7, the first transistor T1 and the threshold voltage catching transistor T4 are both N-type transistors (the threshold voltage catching transistor T4 is not shown).
Further, the threshold voltage capture transistor T4 may include a metal oxide semiconductor layer, and the transistor including the metal oxide semiconductor layer generally has better switching characteristics, which may improve the current leakage prevention capability of the pixel circuit and improve the display effect. In this case, the first transistor T1 may also include a metal oxide semiconductor layer.
In the embodiment of the present application, when the pixel repairing circuit 02 repairs the defective pixel 01, the second scan line S2 controls the first switch 06 and the threshold voltage grabbing transistor T4 in the pixel repairing circuit 02 to be turned on simultaneously, so that the pixel repairing circuit 02 obtains the required data signal Vdata, thereby implementing the function of repairing the defective pixel 01. When the pixel repair circuit 02 does not need to read the data signal Vdata or stop repairing the defective pixel 01, the second scan line S2 controls the first switch 06 and the threshold voltage grasping transistor T4 in the pixel repair circuit 02 to be simultaneously turned off.
Fig. 8 is a schematic view of another display panel provided in an embodiment of the present application.
In one embodiment of the present application, i pixel repair circuits 02 connected to the same scan line SS are electrically connected to i first data lines 32, respectively, and corresponding first switches 06 are included between the i first data lines 32 and the i first repair lines 04. That is, one pixel repair circuit 02 electrically connects one first data line 32, one first data line 32 corresponds to one first repair line 04, and the first data line 32 and the first repair line 04 are electrically connected to one first switch 06.
In the i pixel repairing circuits 02, the control terminals 63 of the first switches 06 corresponding to the first data lines 32 electrically connected thereto are all electrically connected to the scan line SS; wherein i is more than or equal to 2. That is, the control terminals 63 of the first switches 06 electrically connected to the i first data lines 32 are all electrically connected to the same scan line SS.
It should be noted that, when no defective pixel 01 appears in the display panel 001, the control terminals 63 of the first switches 06 electrically connected to the i first data lines 32 are all at least partially overlapped with the same scan line SS along the thickness direction of the display panel 001, and when the i pixel repairing circuits 02 are required to repair the defective pixel 01 in the display panel 001, the control terminals 63 of the first switches 06 electrically connected to the i first data lines 32 are all electrically connected with the same scan line SS.
In this embodiment, the i pixel repair circuits 02 are further electrically connected to the i second repair lines 05, respectively. Moreover, the scan line SS in the embodiment of the present application is used to control the driving transistor Td in the pixel repair circuit 02 to obtain the data signal Vdata. That is, the scan line SS in the embodiment of the present application may be the first scan line S1 or the second scan line S2 in the above-described embodiment.
Further, since the first scan line S1 controls the data signal writing transistor T2 and the second scan line S2 controls the switching states of the threshold voltage capture transistor T4 to be the same, in this embodiment of the application, optionally, the control terminal 63 of a part of the first switches 06 is electrically connected to the first scan line S1, and the control terminal 63 of another part of the first switches 06 is electrically connected to the second scan line S2.
Specifically, as shown in fig. 8, the plurality of pixel repair circuits 02 includes a first pixel repair circuit 02A and a second pixel repair circuit 02B, the plurality of first data lines 32 includes a first sub data line 32A and a second sub data line 32B, the plurality of first repair lines 04 includes a first sub repair line 04A and a second sub repair line 04B, the plurality of first switches 06 includes a first sub switch 06A and a second sub switch 06B, and the plurality of second repair lines 05 includes a third sub repair line 05A and a fourth sub repair line 05B.
The first pixel repair circuit 02A and the second pixel repair circuit 02B are electrically connected to the same first scan line S1. The first sub data line 32A is electrically connected to the first pixel repair circuit 02A, and the second sub data line 32B is electrically connected to the second pixel repair circuit 02B. The first sub repair line 04A is electrically connected to the input terminal 61A of the first sub switch 06A, and the output terminal 62A of the first sub switch 06A is electrically connected to the first sub data line 32A. The second sub repair line 04B is electrically connected to the input terminal 61B of the second sub switch 06B, and the output terminal 62B of the second sub switch 06B is electrically connected to the second sub data line 32B. The third sub-repair line 05A is electrically connected to an output terminal of the first pixel repair circuit 02A, and the fourth sub-repair line 05B is electrically connected to an output terminal of the second pixel repair circuit 02B.
Note that, in the thickness direction of the display panel 001, both the first and second sub repair lines 04A and 04B at least partially overlap the pixel data line 31. The third repair sub-line 05A and the fourth repair sub-line 05B each overlap at least partially with an input terminal of the light emitting device 12 to which the corresponding pixel circuit 11 is electrically connected.
When the first defective pixel 01A and the second defective pixel 01B appear in the display panel 001, the first pixel repair circuit 02A is used to repair the first defective pixel 01A, and the second pixel repair circuit 02B is used to repair the second defective pixel 01B. Wherein the first defective pixel 01A includes a first defective pixel circuit 11A and a first light emitting device 12A, and the second defective pixel 01B includes a second defective pixel circuit 11B and a second light emitting device 12B. The first defective pixel circuit 11A is electrically connected to the first pixel data line 31A, and the second defective pixel circuit 11B is electrically connected to the second pixel data line 31B.
Disconnecting the first defective pixel circuit 11A from the first light emitting device 12A, irradiating a portion where the third repair sub-line 05A overlaps the first light emitting device 12A with laser, and electrically connecting the third repair sub-line 05A with the first light emitting device 12A; the overlapping portion of the first sub-repair line 04A and the first pixel data line 31A is irradiated with laser to electrically connect the first sub-repair line 04A and the first pixel data line 31A.
Disconnecting the second defective pixel circuit 11B from the second light emitting device 12B, irradiating a portion where the fourth repair sub-line 05B overlaps the second light emitting device 12B with laser light, and electrically connecting the fourth repair sub-line 05B with the second light emitting device 12B; the overlapping portion of the second sub repair line 04B and the second pixel data line 31B is irradiated with laser to electrically connect the second sub repair line 04B and the second pixel data line 31B.
The control terminal 63A of the first sub-switch 06A and the control terminal 63B of the second sub-switch 06B are both electrically connected to the same first scan line S1.
It is understood that the first defective pixel circuit 11A, the second defective pixel circuit 11B, the first pixel repair circuit 02A, and the second pixel repair circuit 02B are electrically connected to the same scan line SS.
When the first defective pixel 01A and the second defective pixel 01B need to emit light, the first scan line S1 controls the first sub switch 06A and the second sub switch 06B to be turned on, and the first pixel repair circuit 02A and the second pixel repair circuit 02B obtain required data signals and respectively drive the first defective pixel 01A and the second defective pixel 01B to operate.
When the first defective pixel 01A and the second defective pixel 01B do not need to acquire the data signal corresponding to the light emitting luminance, the first scanning line S1 controls the first sub switch 06A and the second sub switch 06B to be disconnected, the first sub data line 32A is disconnected from the first sub repairing line 04A, and the second sub data line 32B is disconnected from the second sub repairing line 04B, so that the brightness difference between the normal pixel 01 electrically connected with the first pixel data line 31A and the normal pixel 01 electrically connected with the second pixel data line 31B is avoided.
Fig. 9 is a flowchart of a pixel repairing method according to an embodiment of the present application, and fig. 10 is a schematic diagram of another display panel according to the embodiment of the present application.
The embodiment of the present application provides a pixel repairing method, which is used for repairing the pixel 01 with the defect in the display panel 001 provided in the above embodiment. With reference to fig. 9 and 10, the pixel repair method includes:
step S1: the defective pixel 01' is confirmed, and the pixel circuit 11 and the light emitting device 12 of the defective pixel are electrically separated.
Step S2: the pixel data line 31 to which the pixel circuit 11 in the defective pixel 01' is electrically connected to the first repair line 04.
Step S3: the input terminal of the light emitting device 12 in the defective pixel 01' is electrically connected to the second repair line 05.
Step S4: the first switch 06 is turned on, and the first data line 32, to which the first repair line 04 is electrically connected to the pixel repair circuit 02, is electrically connected through the first switch 06.
In this case, the pixel repair circuit 02 obtains a desired data signal, and can drive the defective pixel 01' to operate normally.
When the repair of the defective pixel 01' is stopped, the first switch 06 is turned off, and the first data line 32 electrically connected to the pixel repair circuit 02 is disconnected from the first repair line 04. The luminance difference of the normal pixels 01 electrically connected to the pixel data lines 31 is prevented.
Further, in the pixel repairing method provided in the embodiment of the present application, step S3 may also be performed before step S2.
In one technical solution of the embodiment of the present application, please refer to fig. 10, in which the pixel circuit 11 corresponding to the defective pixel 01 'and at least one pixel repairing circuit 02 are connected to the same scan line SS, that is, the pixel repairing circuit 02 and the pixel circuit 11 in the defective pixel 01' are controlled by the same control signal,
alternatively, the pixel repair circuit 02 has the same circuit structure as the pixel circuit 11 in the defective pixel 01 ', and the pixel repair circuit 02 operates in the same state as the pixel circuit 11 in the defective pixel 01'. The defective pixel 01' is guaranteed to work according to the normal driving signal after being repaired.
Further, the scan line SS commonly connected to the pixel circuit 11 corresponding to the defective pixel 01' and the at least one pixel repair circuit 02 includes a first scan line S1, and the first scan line S1 is used for controlling the pixel circuit 11 and the pixel repair circuit 02 electrically connected thereto to receive the data signal at the same time.
The control terminal 63 of the first switch 06 is electrically connected to the first scan line S1.
In the embodiment of the present application, when the first scan line S1 controls the pixel circuit 11 in the defective pixel 01 'and the pixel repair circuit 02 to receive the data signal, and at the same time controls the first switch 06 to be turned on, the first data line 32 is electrically connected to the pixel data line 31 electrically connected to the pixel circuit 11 in the defective pixel 01' through the first switch 06 and the first repair line 04. That is, the pixel repair circuit 02 receives the same data signal as the pixel circuit 11 in the defective pixel 01 ', so that the defective pixel 01' can be driven to operate normally. When the first scan line S1 controls the pixel circuit 11 and the pixel repair circuit 02 in the defective pixel 01 'to stop receiving the data signal, and at the same time controls the first switch 06 to turn off, the first repair line 04 and the first data line 32 electrically connected to the pixel repair circuit 02 are turned off, that is, the first data line 32 and the pixel data line 31 electrically connected to the pixel circuit 11 in the defective pixel 01' are turned off, so as to avoid the brightness difference of the normal pixel 01 electrically connected to the pixel data line 31.
Fig. 11 is a schematic view of a display device according to an embodiment of the present disclosure.
The embodiment of the present application provides a display device 100 including the display panel 001 according to any one of the embodiments described above. As shown in fig. 11, the display device 100 provided in the embodiment of the present application may be a mobile phone, or may be a display device such as a computer or a television.
In the display apparatus 100, the pixel repair circuit 02 may repair the corresponding defective pixel 01, that is, when the defective pixel 01 needs to emit light, the pixel repair circuit 02 can receive a data signal corresponding to the light emission luminance of the defective pixel, and the pixel repair circuit 02 can operate and output a signal for driving the light emitting device 12 in the defective pixel 01.
Due to the arrangement of the first switch 06, in any frame of picture, when only the defective pixel 01 needs to obtain the data signal corresponding to the light-emitting brightness, the corresponding first switch 06 is turned on and the corresponding pixel data line 31 and the first data line 32 are electrically connected. Therefore, in the display of the display device 100, only the repaired defective pixel 01 has a slight difference in luminance from the other pixels 01, and is not easily perceived by the user. The situation that data signals are delayed in other pixels 01 sharing the pixel data line 31 with the repaired pixel 01 is avoided, the situation that the pixels 01 sharing the pixel data line 31 with the repaired pixel 01 are different from other pixels 01 in brightness is avoided, the situation that the brightness difference is easily perceived in the display panel 001 is avoided, and the display effect of the display panel 001 is guaranteed.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the scope of protection of the present application.

Claims (13)

1. A display panel, comprising:
a plurality of pixels; the pixel includes a pixel circuit and a light emitting device;
a pixel repair circuit for repairing the defective pixel;
the plurality of data lines comprise pixel data lines and first data lines, the pixel data lines are electrically connected with the pixel circuits, and the first data lines are electrically connected with the pixel repairing circuits;
the first repairing line is at least partially overlapped with the pixel data line along the thickness direction of the display panel;
the second repairing line is at least partially overlapped with the output end of the pixel repairing circuit along the thickness direction of the display panel, and the second repairing line is at least partially overlapped with the input end of the light-emitting device electrically connected with the corresponding pixel circuit;
the output end of the first switch is electrically connected with the first data line, and the input end of the first switch is electrically connected with the first repairing line.
2. The display panel according to claim 1, further comprising a plurality of scan lines, wherein the second repair line is electrically connected to an output terminal of the pixel repair circuit;
the pixel circuit corresponding to the second repairing line and the pixel repairing circuit electrically connected with the second repairing line are electrically connected with the same scanning line.
3. The display panel according to claim 2, wherein the first switch comprises a first transistor, a source of the first transistor is electrically connected to an input of the first switch, a drain of the first transistor is electrically connected to an output of the first switch, and a gate of the first transistor is electrically connected to a control terminal of the first switch.
4. The display panel according to claim 3, wherein the display panel is electrically connected to an integrated circuit board, and the integrated circuit board is electrically connected to a control terminal of the first switch.
5. The display panel according to claim 3, wherein the pixel repair circuit comprises a data signal write transistor, wherein the plurality of scan lines includes a first scan line electrically connected to a gate of the data signal write transistor;
the first scan line electrically connected to the pixel repair circuit is electrically connected to a control terminal of the first switch electrically connected to the pixel repair circuit, and the first switch and the data signal writing transistor have the same channel type.
6. The display panel according to claim 3, wherein the pixel repair circuit further comprises a threshold voltage capture transistor, wherein the plurality of scan lines includes a second scan line electrically connected to a gate of the threshold voltage capture transistor;
the second scanning line electrically connected with the pixel repairing circuit is electrically connected with the control end of the first switch electrically connected with the pixel repairing circuit, and the channel type of the first switch is the same as that of the threshold voltage grabbing transistor.
7. The display panel according to claim 6, wherein the threshold voltage grasping transistor comprises a metal oxide semiconductor layer.
8. The display panel according to claim 2, wherein i of the pixel repair circuits electrically connected to the same scanning line are electrically connected to i of the first data lines, respectively; the corresponding first switches are arranged between the i first data lines and the i first repairing lines;
in the i pixel repairing circuits, the control ends of the first switches corresponding to the first data lines which are respectively and electrically connected with the pixel repairing circuits are all electrically connected with the scanning line;
wherein i is more than or equal to 2.
9. The display panel according to claim 1, wherein the pixel repair circuit has the same circuit structure as the pixel circuit.
10. A display device characterized in that it comprises a display panel according to any one of claims 1 to 9.
11. A pixel repair method for repairing the pixel in which a defect occurs in the display panel according to claims 1 to 9, comprising:
identifying a defective pixel, electrically separating a pixel circuit of the defective pixel from a light emitting device;
electrically connecting a pixel data line electrically connected with a pixel circuit in the defective pixel with a first repair line;
electrically connecting an input end of the light emitting device in the defective pixel with a second repair line;
and a first switch is turned on, and the first repairing line is electrically connected with a first data line electrically connected with the pixel repairing circuit through the first switch.
12. The pixel repairing method according to claim 11, wherein the pixel circuit corresponding to the defective pixel and at least one of the pixel repairing circuits are commonly connected to the same scan line.
13. The pixel repairing method according to claim 12, wherein the scan lines commonly connected to the pixel circuit corresponding to the defective pixel and at least one of the pixel repairing circuits include a first scan line for controlling the pixel circuit and the pixel repairing circuit to which the first scan line is electrically connected to simultaneously receive data signals; the control end of the first switch is electrically connected with the first scanning line.
CN202111465348.4A 2021-12-03 2021-12-03 Display panel, display device and pixel repairing method Pending CN113990254A (en)

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CN103810965A (en) * 2012-11-07 2014-05-21 上海天马微电子有限公司 Display device and defect repairing method of pixel unit thereof
US20150109189A1 (en) * 2013-10-23 2015-04-23 Samsung Display Co., Ltd. Organic light-emitting display apparatus
CN104637442A (en) * 2013-11-08 2015-05-20 三星显示有限公司 Organic light-emitting display apparatus, method of repairing the same, and method of driving the same
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