CN114255693B

CN114255693B - Display device, repairing method thereof, storage medium, display driving chip and device

Info

Publication number: CN114255693B
Application number: CN202011014215.0A
Authority: CN
Inventors: 陈鹏名; 梁吉德; 李瑞亮; 张峰; 邓建懂; 李牧遥
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2020-09-24
Filing date: 2020-09-24
Publication date: 2023-06-20
Anticipated expiration: 2040-09-24
Also published as: CN114255693A

Abstract

The application provides a display device, a repairing method thereof, a storage medium, a display driving chip and equipment. The display device comprises a sub-pixel array, wherein the sub-pixel array comprises a pixel column group, a light emitting device in a sub-pixel arranged in the pixel column group is connected with a pixel driving circuit through a light emitting switch, and control ends of a plurality of light emitting switches in one sub-pixel column are electrically connected with the same light emitting control line. The display device further comprises a defect repair module, wherein the light-emitting control line is electrically connected with the defect repair module, and when a first sub-pixel column in the pixel column group has a display defect, the defect repair module is used for controlling the light-emitting control line corresponding to the first sub-pixel column to be provided with a non-effective level signal so as to control the first sub-pixel column not to emit light. During display, the first sub-pixel column with display defects is controlled not to emit light, so that display effect is prevented from being influenced by display abnormality, and visual experience of a user is ensured.

Description

Display device, repairing method thereof, storage medium, display driving chip and device

Technical Field

The invention belongs to the technical field of display, and particularly relates to a display device, a repairing method thereof, a storage medium, a display driving chip and equipment.

Background

With the development of display technology, mobile phones, computers, televisions, intelligent wearable devices and the like with display functions are increasingly important in work and life of people, and the quality requirements of users on display products are also increasingly high. Whether it is a liquid crystal display technology or a self-luminous display technology, various signal lines need to be provided in a display panel in order to realize display. And because of the process of the signal wire or other reasons, the signal wire has the risk of disconnection, black lines or white lines appear when in display, thereby affecting the display effect and further affecting the visual experience of users.

Disclosure of Invention

In view of this, the application provides a display device, a repairing method thereof, a storage medium, a display driving chip and a device, which solve the technical problem that the display device has a line defect and then causes bright lines to be displayed so as to influence user experience.

In a first aspect, embodiments of the present application provide a display device, including:

the pixel array comprises at least one pixel column group, the pixel column group is a part of the pixel array, each pixel column group comprises a plurality of sub-pixel columns which are sequentially arranged in a first direction, each sub-pixel column comprises a plurality of sub-pixels, each sub-pixel comprises a light emitting device, a pixel driving circuit and a light emitting switch, and the pixel driving circuit is electrically connected with the light emitting device through the light emitting switch; when the control end of the light-emitting switch receives an effective level signal, the pixel driving circuit and the light-emitting device are conducted;

A plurality of light-emitting control lines extending along a second direction, the second direction crossing the first direction, the control ends of the plurality of light-emitting switches in one sub-pixel column being electrically connected to the same light-emitting control line;

the defect repair module is electrically connected with the light-emitting control line;

the chip is used for controlling the sub-pixel array through a plurality of signal lines so as to display specified contents; the defect repair module is electrically connected with the chip; the chip is used for controlling the defect repair module to provide a non-effective level signal to the first light-emitting control line when the first sub-pixel column in the pixel column group is determined to have a display defect, so that the sub-pixels in the first sub-pixel column do not emit light, and the first light-emitting control line is a light-emitting control line corresponding to the first sub-pixel column.

In one embodiment, controlling the defect repair module to provide the inactive level signal to the first light emitting control line includes: the defect repair module is controlled to provide a non-active level signal to the first light emitting control line before the screen is displayed.

Further, the chip is configured to control the sub-pixel array through a plurality of signal lines to display specified contents, and includes: when the display defect exists in a first sub-pixel column in the pixel column group, adjusting the image data to be displayed to obtain adjusted image data so as to match with a repair array, wherein the repair array is a part of arrays which can be used for display in the sub-pixel array when the display defect exists in the first sub-pixel column; and controlling the repair array through a plurality of signal lines according to the adjusted image data to display specified contents.

Specifically, the display device comprises a display area and a non-display area surrounding the display area, and the sub-pixel array is positioned in the display area; in the first direction, the pixel column group is adjacent to the first non-display area; the chip is further used for controlling the defect repair module to provide a non-effective level signal to the second light-emitting control line when the first sub-pixel column in the pixel column group is determined to have a display defect, wherein the sub-pixel columns positioned between the first sub-pixel column and the first non-display area are all second sub-pixel columns, and the second light-emitting control line is a light-emitting control line corresponding to the second sub-pixel column.

Specifically, the defect repair module comprises a light-emitting control module and a closing selection module; the light-emitting control module comprises a plurality of light-emitting control units, the light-emitting control units are in one-to-one correspondence with the light-emitting control lines, and the light-emitting control lines are electrically connected with the output ends of the light-emitting control units; the light-emitting control unit comprises a first subunit and a second subunit, wherein the first subunit is used for controlling the output end of the light-emitting control unit to output an effective level signal under the control of the signal of the first control end, the signal of the first voltage end and the first node potential; the second subunit is used for controlling the output end of the light-emitting control unit to output a non-effective level signal under the control of the signal of the second control end, the signal of the second voltage end and the first node potential;

The closing selection module comprises a main control line, a plurality of switch units and a plurality of cascaded shift units, wherein the control end of each switch unit is electrically connected with the main control line, the first end of each switch unit is electrically connected with the output end of each shift unit, the second end of each switch unit is electrically connected with the second control end of each light-emitting control unit, and each switch unit is used for conducting the first end and the second end of each switch unit when the control end of each switch unit receives an effective level signal;

the control defect repair module provides inactive level signals to the first light emitting control line, specifically comprising: the chip provides a first light-emitting control signal to the first control end, provides a first voltage signal to the first voltage end, and provides a second voltage signal to the second voltage end so as to control the plurality of light-emitting control units to work;

the chip provides shift control signals for the plurality of cascaded shift units, so that the plurality of cascaded shift units sequentially output effective level signals;

the chip provides a main control signal to the main control line, wherein the main control signal is used for controlling the first end and the second end of the switch unit which are electrically connected with the first light-emitting control unit to be conducted so as to provide the effective level signal output by the shifting unit to the first light-emitting control unit and control the output end of the first light-emitting control unit to output an inactive level signal, and the first light-emitting control unit is a light-emitting control unit which is electrically connected with the first light-emitting control line.

Further, the controlling the defect repair module to provide the inactive level signal to the second light emitting control line specifically includes: the main control signal is also used for controlling the first end and the second end of the switch unit which are electrically connected with the second light-emitting control unit to be conducted so as to provide the effective level signal output by the shift unit for the second light-emitting control unit and control the output end of the second light-emitting control unit to output the non-effective level signal, wherein the second light-emitting control unit is a light-emitting control unit which is electrically connected with the second light-emitting control line.

Specifically, the first subunit comprises a first transistor, a second transistor and a first capacitor, wherein the control end and the first end of the first transistor are electrically connected with the first control end, and the second end of the first transistor is electrically connected with the first node; the control end of the second transistor is electrically connected with the first node, the first end of the second transistor is electrically connected with the first voltage end, and the second end of the second transistor is electrically connected with the output end of the light-emitting control unit; the first polar plate of the first capacitor is electrically connected with the first node, and the second polar plate of the first capacitor is electrically connected with the output end of the light-emitting control unit.

The second subunit comprises a third transistor and a fourth transistor, wherein the control end of the third transistor and the control end of the fourth transistor are electrically connected with the second control end, the first end of the third transistor and the first end of the fourth transistor are electrically connected with the second voltage end, the second end of the third transistor is electrically connected with the first node, and the second end of the fourth transistor is electrically connected with the output end of the light-emitting control unit.

In the embodiment of the application, the chip is a display driving chip or an application processor chip; or,

the chip comprises a display driving chip and an application processor chip; the shift control signal comprises a start signal, a clock signal and a reference voltage signal, wherein the display driving chip is used for providing a first light-emitting control signal for a first control end, providing a main control signal for a main control line and providing the start signal and the clock signal for a plurality of cascaded shift units; the application processor chip is used for providing a first voltage signal to a first voltage terminal, providing a second voltage signal to a second voltage terminal and providing reference voltage signals to a plurality of cascaded shift units.

In a second aspect, an embodiment of the present application further provides a method for repairing a display device, where the display device includes: the pixel array comprises at least one pixel column group, the pixel column group is a part of the pixel array, each pixel column group comprises a plurality of sub-pixel columns which are sequentially arranged in a first direction, each sub-pixel column comprises a plurality of sub-pixels, each sub-pixel comprises a light emitting device, a pixel driving circuit and a light emitting switch, and the pixel driving circuit is electrically connected with the light emitting device through the light emitting switch; when the control end of the light-emitting switch receives an effective level signal, the pixel driving circuit and the light-emitting device are conducted; a plurality of light-emitting control lines extending along a second direction, the second direction crossing the first direction, the control ends of the plurality of light-emitting switches in one sub-pixel column being electrically connected to the same light-emitting control line; the defect repair module is electrically connected with the light-emitting control line; the repairing method comprises the following steps:

When it is determined that a display defect exists in a first sub-pixel column in the pixel column group, the defect repair module is controlled to provide a non-active level signal to a first light-emitting control line so that the first sub-pixel column does not emit light, wherein the first light-emitting control line is a light-emitting control line corresponding to the first sub-pixel column.

Further, the controlling the defect repair module to provide the inactive level signal to the first light emitting control line to make the first sub-pixel column non-emit light includes: before a screen is displayed on a bright screen, the defect repair module is controlled to provide a non-effective level signal to the first light-emitting control line so that the first sub-pixel column does not emit light.

Further, the repairing method further comprises the following steps: when the display defect exists in a first sub-pixel column in the pixel column group, adjusting the image data to be displayed to obtain adjusted image data so as to match with a repair array, wherein the repair array is a part of arrays which can be used for display in the sub-pixel array when the display defect exists in the first sub-pixel column; and controlling the repair array to display specified content according to the adjusted image data.

Specifically, the display device comprises a display area and a non-display area surrounding the display area, and the sub-pixel array is positioned in the display area; in the first direction, the pixel column group is adjacent to the first non-display area; the repair method further comprises the following steps: when the display defect exists in the first sub-pixel column in the pixel column group, the control defect repair module provides an inactive level signal to the second light-emitting control line so that the second sub-pixel column does not emit light, wherein the sub-pixel columns positioned between the first sub-pixel column and the first non-display area are all second sub-pixel columns, and the second light-emitting control line is a light-emitting control line corresponding to the second sub-pixel column.

In a third aspect, embodiments of the present application also provide a storage medium including a computer program executable by a processor to perform the repair method provided by any of the embodiments of the present application.

In a fourth aspect, embodiments of the present application further provide a display driving chip, where the display driving chip is configured to:

providing a signal to control a sub-pixel array connected to a display driving chip to display specified contents;

and providing a control signal, wherein the control signal is used for controlling a defect repair module electrically connected with the display driving chip to provide an inactive level signal for the first light-emitting control line, and when the inactive level signal is transmitted by the first light-emitting control line, the first sub-pixel column corresponding to the inactive level signal does not emit light, and the first sub-pixel column is a sub-pixel column with display defects in the sub-pixel array.

Further, the display driving chip is further used for adjusting the image data to be displayed to obtain adjusted image data so as to match with the repair array, wherein the repair array is a part of arrays which can be used for display in the sub-pixel array when the first sub-pixel array has display defects; providing signals to control a subpixel array connected to a display driver chip to display specified content, comprising: the adjusted image data is provided to control the repair array to display the specified content.

In a fifth aspect, embodiments of the present application further provide an apparatus, including a display device provided in any embodiment of the present application.

The display device, the repairing method thereof, the storage medium, the display driving chip and the display driving device have the following beneficial effects: the control ends of the light-emitting switches belonging to the same sub-pixel column are electrically connected with the same light-emitting control line. When the data line driving the sub-pixel columns is disconnected, the sub-pixel columns are caused to display bright lines, and display defects exist. And controlling by the defect repair module to provide a non-effective level signal to the light-emitting control line corresponding to the first sub-pixel column with the display defect, so that the light-emitting control line controls the corresponding light-emitting switch to be closed, and the pixel driving circuit is disconnected from the light-emitting device. When in display, the first sub-pixel column with display defects does not emit light, so that display abnormity is prevented from affecting the display effect, and the visual experience of a user is ensured. Further, after the first sub-pixel column with the display defect is closed, the image data is adjusted to be matched with the rest part which can be normally displayed in the sub-pixel array, and the sub-pixel array is controlled to display appointed content under the control of the adjusted image data, so that the integrity of image display is ensured, and the influence on the display effect caused by the loss of the image data after the first sub-pixel column is closed is avoided.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it will be obvious that the drawings in the following description are some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort to a person skilled in the art.

FIG. 1 is a schematic diagram of a pixel driving circuit in an organic light emitting display device;

fig. 2 is a schematic diagram of a display device according to an embodiment of the present application;

FIG. 3 is a schematic diagram of another alternative implementation of a display device according to an embodiment of the present disclosure;

FIG. 4 is a schematic diagram of another alternative implementation of a display device according to an embodiment of the present disclosure;

fig. 5 is a schematic cross-sectional view of a display device according to an embodiment of the present disclosure;

FIG. 6 is a schematic diagram of another alternative implementation of a display device according to an embodiment of the present disclosure;

FIG. 7 is a schematic diagram of a structure of a light emission control unit;

FIG. 8 is a timing diagram of the light emission control unit illustrated in FIG. 7;

FIG. 9 is a schematic diagram of another alternative implementation of a display device according to an embodiment of the present disclosure;

FIG. 10 is a timing diagram of the defect repair module of FIG. 9;

FIG. 11 is a schematic diagram of a shift unit according to an embodiment of the present application;

FIG. 12 is a timing diagram of the shift unit provided in the embodiment of FIG. 11;

FIG. 13 is a schematic diagram of another alternative implementation of a display device according to an embodiment of the present disclosure;

FIG. 14 is a timing diagram of the defect repair module of FIG. 13;

FIG. 15 is a schematic view of another alternative implementation of the display device according to the embodiments of the present application;

FIG. 16 is a schematic view of another alternative display device according to an embodiment of the present disclosure;

FIG. 17 is a schematic diagram of another alternative implementation of a display device according to an embodiment of the present disclosure;

FIG. 18 is a flowchart of a repair method according to an embodiment of the present application;

FIG. 19 is another flowchart of a repair method according to an embodiment of the present application;

FIG. 20 is another flowchart of a repair method according to an embodiment of the present application;

fig. 21 is a schematic structural diagram of a display driving chip according to an embodiment of the present disclosure;

fig. 22 is a schematic diagram of an apparatus provided in an embodiment of the present application.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to fall within the scope of the invention.

The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in 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.

In the organic light emitting display technology, a light emitting device is driven by a current, and fig. 1 is a schematic diagram of a pixel driving circuit in an organic light emitting display device. As shown in fig. 1, the pixel driving circuit includes a switching transistor M1, a driving transistor M2, and a capacitor C, and when the pixel driving circuit is in operation, a data signal Vdata is input to a data signal terminal, a scan signal S is input to a scan signal terminal, and a positive signal PVDD is input to a positive power supply terminal. Wherein the output end of the driving transistor M2 is electrically connected with the anode of the light emitting device OL, and the light emitterThe cathode of the member OL is connected to the negative power supply terminal which provides the negative signal PVEE. The formula of the light emitting current of the light emitting device is id=k (PVDD-Vdata- |vth|) ² K is a constant related to a transistor in the pixel driving circuit, and Vth is a threshold voltage of the driving transistor M2. As can be seen from the above formula of the light emission current, the smaller the data signal Vdata is, the larger the light emission current Id is, and the higher the luminance of the light emitting device is. When the data line in the display device is broken, the data signal Vdata is reduced, and a row of light emitting devices connected with the broken data line can be displayed as bright lines during display, so that the display effect is seriously affected.

Based on this, the embodiment of the application provides a display device, a repairing method thereof, a storage medium, a display driving chip and equipment, wherein a defect repairing module is arranged in the display device, and when a display defect exists, the defect repairing module controls a light emitting device in a sub-pixel column with the display defect to not emit light, so that the influence of a display bright line on a display effect is avoided.

Fig. 2 is a schematic diagram of a display device according to an embodiment of the present application. As shown in fig. 2, the display device includes: a sub-pixel array comprising at least one pixel column group 1, the pixel column group being part of the sub-pixel array, each pixel column group 1 comprising a plurality of sub-pixel columns 10 arranged in sequence in a first direction x, only 6 sub-pixel columns 10 of the pixel column group 1 being illustrated in fig. 2. The sub-pixel column 10 includes a plurality of sub-pixels 11, and the sub-pixels 11 include a light emitting device 111, a pixel driving circuit 112, and a light emitting switch 113, wherein the pixel driving circuit 112 is electrically connected to the light emitting device 111 through the light emitting switch 113. That is, in the sub-pixel 11, when the light-emitting switch 113 is turned on, the pixel driving circuit 112 is connected to the light-emitting device 111, and can drive the light-emitting device 111 to emit light. When the light emitting switch 113 is turned off, the pixel driving circuit 112 is disconnected from the light emitting device 111. The pixel driving circuit 112 may be any one of the pixel driving circuits in the prior art, and the specific structure of the pixel driving circuit in this embodiment is not described herein.

In the sub-pixel column group, a pixel driving current in a sub-pixel is electrically connected to the light emitting device through the light emitting switch. The pixel column group is a part of the sub-pixel array, and in the sub-pixels of the other sub-pixel columns outside the pixel column group, the pixel driving circuit is directly electrically connected to the light emitting device.

As shown in fig. 2, the display device further includes a light emission control line 20 extending along a second direction y intersecting the first direction x, typically perpendicular thereto. The control terminals of all the light-emitting switches 113 in one sub-pixel column 10 are electrically connected to the same light-emitting control line 20. The number of the light emission control lines is the same as the number of the sub-pixel columns in the pixel column group. One sub-pixel column 10 is controlled by one light emission control line 20, and when the light emission control line 20 provides an active level signal, the light emission switches 113 in the sub-pixel columns 10 connected thereto are all turned on; when the light emission control line 20 supplies the inactive level signal, the light emission switches 113 in the sub-pixel columns 10 connected thereto are turned off.

The defect repair module 30, the light emitting control line 20 is electrically connected to the defect repair module 30.

The display device further includes a chip (not shown in the drawing) for controlling the sub-pixel array through a plurality of signal lines to display specified contents. The defect repair module 30 is electrically connected to the chip. Upon determining that the first sub-pixel column in the pixel column group has a display defect, the chip is configured to control the defect repair module 30 to supply a non-active level signal to the light emission control line 20 corresponding to the first sub-pixel column such that the first sub-pixel column does not emit light. The light emission control line 20 provides an inactive level signal to control the corresponding light emission switch 113 to be turned off. The light emission control line corresponding to the first subpixel column having the display defect is defined as a first light emission control line in this application. In the embodiment of the application, the pixel driving circuit is arranged in the sub-pixels of the pixel column group and is electrically connected with the light emitting device through the light emitting switch, and the control ends of the light emitting switches belonging to the same sub-pixel column are electrically connected with the same light emitting control line. When the data lines of the sub-pixel columns in the driving pixel column group are disconnected, the sub-pixel columns can display bright lines, display defects exist, and the display effect is affected. And controlling at least providing a non-effective level signal to a light-emitting control line corresponding to the first sub-pixel column with the display defect through the defect repair module, so that the light-emitting control line controls the corresponding light-emitting switch to be closed, and the pixel driving circuit is disconnected with the light-emitting device. When in display, the first sub-pixel column with display defects does not emit light, so that the display effect is prevented from being influenced by display bright lines, and the user experience is improved.

Further, when the first sub-pixel column in the pixel column group is determined to have a display defect, the chip is further configured to adjust the image data to be displayed to obtain adjusted image data so as to match with a repair array, where the repair array is a partial array which can be used for display in the sub-pixel array when the first sub-pixel column has the display defect; and controlling the repair array through a plurality of signal lines according to the adjusted image data to display specified contents. That is, the output of the image data can be adjusted after the first sub-pixel column is closed, and the output of the image data is adjusted according to the remaining sub-pixels capable of normally emitting light in the sub-pixel array, so that the image data is matched with the repair array, the integrity of image display is ensured, and the influence on the display effect caused by the loss of the image data after the first sub-pixel column is closed is avoided.

Specifically, when the display device is driven to display a picture, the chip is further used for controlling the pixel driving circuit in the sub-pixel column which does not need to be closed in the pixel column group to be conducted with the light emitting device through the defect repair module. In one embodiment, the subpixel columns that need to be turned off are the first subpixel columns that have display defects, and the subpixel columns that do not need to be turned off are all the subpixel columns in the pixel column group except the first subpixel columns. In another embodiment, the subpixel columns that need to be turned off include the first subpixel column having the display defect and a portion of the subpixel columns adjacent thereto, and the subpixel columns that do not need to be turned off are the remaining subpixel columns of the pixel column group, and this embodiment will be described in the following specific embodiments.

In one embodiment, the chip controls the sub-pixel array to display the specified content, and the defect repair module is controlled to provide a non-effective level signal to the first light emitting control line so as to control the first sub-pixel column with the defect not to emit light, so that the display effect is prevented from being influenced by the display bright line.

In another embodiment, when it is determined that the first sub-pixel column in the pixel column group has a display defect, the chip is configured to control the defect repair module to provide a non-active level signal to the first light emitting control line before the display screen is displayed on the display screen, so as to control the pixel driving circuit in the sub-pixel column to be turned off to disconnect from the light emitting device; meanwhile, the defect repair module is controlled to provide an effective level signal for a light-emitting control line corresponding to the sub-pixel column which does not need to be closed so as to control the pixel driving circuit in the sub-pixel column which does not need to be closed to be conducted with the light-emitting device. Before the sub-pixel array is controlled to display the appointed content, the states of the sub-pixel columns in the pixel column group are configured, the stage of controlling the display picture of the sub-pixel array and the stage of controlling the defect repair module are mutually independent, the control time sequence is not mutually influenced, and the control mode is simpler.

In this embodiment, the chip is a display driving chip or an application processor chip. That is, the display driving chip controls the sub-pixel array to display the specified content, and controls the defect repair module when it is determined that the first sub-pixel column in the pixel column group has the display defect; or controlling the sub-pixel array to display the designated content by the application processor chip, and controlling the defect repair module when the first sub-pixel column in the pixel column group is determined to have the display defect. In one embodiment, the sub-pixel columns in the middle of the sub-pixel array form a pixel column group, and fig. 3 is a schematic diagram of another alternative implementation of the display device provided in the embodiment of the present application. As shown in fig. 3, the display device includes a display area AA and a non-display area BB surrounding the display area AA, and the subpixel array is located in the display area AA; in the first direction x, the pixel column group 1 is adjacent to the first non-display area BB 1. The sub-pixel array as illustrated in the figure further includes a sub-pixel 12, and in the sub-pixel 12, a pixel driving circuit 122 is electrically connected to the anode of the light emitting device 121. That is, the pixel column group is located at the edge of the display area, when the data line driving the sub-pixel columns in the pixel column group has a broken line, the defect repairing module 30 controls the first sub-pixel column having a display defect to be closed, so that the whole effect on the display image is less. Further, the integrity of image display can be ensured by adjusting the output of the image data.

Specifically, when it is determined that the first sub-pixel column in the pixel column group has a display defect, the control defect repair module is further configured to provide an inactive level signal to the second light-emitting control line, where the sub-pixel columns located between the first sub-pixel column and the first inactive area are both second sub-pixel columns, and the second light-emitting control line is a light-emitting control line corresponding to the second sub-pixel column. As described with reference to the schematic illustration in fig. 3, when the sub-pixel column 10-1 has a display defect, it is determined that the sub-pixel column 10-1 is a first sub-pixel column having a display defect, two sub-pixel columns located between the first sub-pixel column 10-1 and the first non-display area BB1 are both second sub-pixel columns, the light emission control line 20 electrically connected to the switching unit in the second sub-pixel column is a second light emission control line, and the defect repair module 30 supplies a non-active level signal to the light emission control line 20 corresponding to the second sub-pixel column, thereby controlling the pixel driving circuit in the second sub-pixel column to be disconnected from the light emitting device to control the second sub-pixel column between the first sub-pixel column and the first non-display area not to emit light. At this time, the sub-pixel columns except the first sub-pixel column and the second sub-pixel column in the sub-pixel array can be used for displaying an image, and the part except the first sub-pixel column and the second sub-pixel column in the sub-pixel array is defined as a repair array. Then, the image data to be displayed is adjusted through the control of the chip to obtain repair image data matched with the repair array; the repair array is controlled to display specified contents through a plurality of signal lines according to the repair image data. The image data is matched with the repair array, the integrity of image display is ensured, and the influence on the display effect caused by the loss of the image data after the first sub-pixel column is closed is avoided.

In another embodiment, the sub-pixel array includes two pixel column groups, and fig. 4 is a schematic diagram of another alternative implementation of the display device provided in the embodiment of the present application. As shown in fig. 4, there is one pixel column group 1 on each side of the sub-pixel array, and each pixel column group 1 is adjacent to the first non-display area BB1 in the first direction x; the display device includes two defect repair modules 30, and one pixel column group 1 corresponds to one defect repair module 30. In this embodiment, two pixel column groups 1 are respectively located at the edges of two sides of the display area AA, and one defect repair module controls one pixel column group. When the data lines of the sub-pixel columns driving the edge of the display area are disconnected, the defect repair module 30 controls the first sub-pixel column with the display defect to be closed, so that the whole influence on the display image is small. The embodiment can also ensure the integrity of the image display by adjusting the output of the image data, and reference is made to the illustration in the embodiment of fig. 3, which is not repeated here. The embodiment can repair the display defects on two sides of the display area.

In one embodiment, fig. 5 is a schematic cross-sectional view of a display device according to an embodiment of the present application. As shown in fig. 5, the structure of the display device is schematically shown, the display device includes a substrate 101, an array substrate 102, a light emitting device layer 103, and a package structure 104, wherein a pixel driving circuit, a light emitting switch, a light emitting control line, and a defect repair module are all located on the array substrate 102. The light emitting device layer 103 includes a plurality of light emitting devices 1031, and the light emitting devices 1031 include an anode 50, a light emitting layer 51, and a cathode 52, which are stacked in this order. The packaging structure 104 is used for packaging and protecting the light emitting device 1031 to isolate water and oxygen and ensure the service life of the light emitting device 1031. In fig. 5, the structure of the sub-pixel is schematically shown, and the light-emitting switch 113 includes a transistor (not shown), a control terminal (i.e., a gate g) of the transistor is electrically connected to a light-emitting control line (not shown in fig. 5), a first terminal of the transistor is electrically connected to an output terminal of the pixel driving circuit 112, and a second terminal of the transistor is electrically connected to the anode 50 of the light-emitting device 1031. One transistor in the pixel driving circuit 112 is schematically shown, and a first terminal of the transistor of the light emitting switch 113 is electrically connected to a second terminal of the transistor in the pixel driving circuit 112. In the transistor structure, the grid electrode of the transistor is a control end of the transistor, and when the source electrode of the transistor is a first end, the drain electrode is a second end; when the drain electrode of the transistor is the first end, the source electrode is the second end.

Specifically, fig. 6 is a schematic diagram of another alternative implementation of the display device provided in the embodiment of the present application, and fig. 7 is a schematic structural diagram of the light emission control unit. Fig. 8 is a timing chart of the light emission control unit illustrated in fig. 7. As shown in fig. 6, the defect repair module 30 includes a light emission control module 31 and a shutdown selection module 32; the light-emitting control module 31 includes a light-emitting control unit 311, and the light-emitting control line 20 is electrically connected to an output terminal OUT1 of the light-emitting control unit 311. The light emission control units 311 are in one-to-one correspondence with the light emission control lines 20. That is, the light-emitting control unit 311 provides a voltage signal to the light-emitting control line 20, so as to control the corresponding sub-pixel columns to be turned on or off. The closing selection module 32 includes a main control line 321, a plurality of switch units 322 and a plurality of cascaded shift units 323, wherein a control end of the switch unit 322 is electrically connected with the main control line 321, a first end of the switch unit 322 is electrically connected with an output end of the shift unit 323, a second end of the switch unit 322 is electrically connected with a second control end of the light emitting control unit 311, and the switch unit 322 is used for conducting the first end and the second end when the control end receives an active level signal.

As shown in fig. 7, the light emission control unit 311 includes a first sub-unit 3111 and a second sub-unit 3112, wherein the first sub-unit 3111 is configured to control the output terminal OUT1 of the light emission control unit 311 to output an active level signal under control of a signal of the first control terminal S1, a signal of the first voltage terminal V1, and a potential of the first node N1; the second subunit 3112 is configured to control the output terminal OUT1 of the light-emitting control unit 311 to output a non-active level signal under control of the signal of the second control terminal S2, the signal of the second voltage terminal V2, and the potential of the first node N1.

As shown in fig. 8, the high level signal output from the output terminal OUT1 of the light emission control unit 311 is taken as an active level signal as an example. The first voltage terminal V1 provides a high level signal, and the second voltage terminal V2 provides a low level signal. Time t1 and time t2 are illustrated. At time t1, when the output terminal OUT1 outputs an active level signal, the light emission control line 20 electrically connected to the light emission control unit 311 provides an active level signal to control the light emission switch 113 to be turned on, so that the sub-pixel column 10 corresponding to the light emission control line 20 can emit light normally. At time t2, when the output terminal OUT1 outputs the inactive level signal, the light emission control line 20 electrically connected to the light emission control unit 311 provides the inactive level signal to control the light emission switch 113 to be turned off, and the sub-pixel column 10 corresponding to the light emission control line 20 is turned off.

For the first sub-pixel column having a display defect, the first sub-pixel column having a display defect can be controlled to be turned off by controlling the output terminal OUT1 of the light emission control unit 311 to output the inactive level signal under the control of the signal of the second control terminal S2, the signal of the second voltage terminal V2, and the potential of the first node N1.

For the sub-pixel columns that do not need to be turned off, the output terminal OUT1 of the light emission control unit 311 is controlled to output an active level signal under the control of the signal of the first control terminal S1, the signal of the first voltage terminal V1, and the potential of the first node N1, so that the sub-pixel columns can be controlled to emit light normally. In this embodiment, whether the light emission of one sub-pixel column is controlled by one light emission control line is electrically connected to the output end of the light emission control unit, that is, one sub-pixel column corresponds to one light emission control unit. The second control end of the light-emitting control unit is electrically connected with the output end of the shifting unit through the switch unit, and when the switch unit is opened, the shifting unit provides the voltage signal of the output end of the shifting unit for the second control end of the light-emitting control unit. That is, whether the active level signal is supplied to the second control terminal of the light emission control unit is controlled by the switching unit. The control ends of all the switch units are electrically connected with the main control line, and the control signals of the main control line are matched with the output signals of the output ends of the plurality of shift units, so that the second control end of the light-emitting control unit can be provided with an effective level signal, the output end of the light-emitting control unit is further controlled to output a non-effective level signal, and the first sub-pixel array is controlled not to emit light. When the defect repair module is applied to the electronic equipment, when the defect repair module repairs the sub-pixel columns with display defects in the display device, the defect repair module is controlled to provide non-effective level signals for the light-emitting control lines corresponding to the first sub-pixel columns with display defects before the display screen is lightened. That is, the defect repair module works once when the display screen of the electronic device is set to be bright once. When the defect repair module works once before a screen is displayed, firstly, an effective level signal is input to the first control ends of all the light-emitting control units in the defect repair module, the effective level signal is controlled to be provided for the light-emitting control lines, when no new voltage signal is written on the light-emitting control lines, the potential control light-emitting switch which maintains the effective level signal on the light-emitting control lines is kept in an on state, then a pixel driving circuit in a sub-pixel column is connected with the anode of a light-emitting device, and the sub-pixel column can emit light when the image is displayed subsequently. The main control line is used for providing an effective level signal to control the corresponding shifting unit to be electrically connected with the second control end of the light-emitting control unit, so that the non-effective level signal can be controlled to be output to the light-emitting control line, the light-emitting control line controls the light-emitting switch in the sub-pixel column to be turned off, and the sub-pixel column is turned off to not emit light when an image picture is displayed subsequently. In the application, when the display defect exists in the first sub-pixel column, the first sub-pixel column with the display defect is closed through the cooperation of the main control line and the cascade shift unit.

Specifically, in the embodiment of the present application, when it is determined that a display defect exists in a first subpixel column in the pixel column group, the controlling defect repair module provides a non-active level signal to the first light emitting control line, specifically includes: the chip provides a first light-emitting control signal to the first control end, provides a first voltage signal to the first voltage end, and provides a second voltage signal to the second voltage end so as to control the plurality of light-emitting control units to work;

In one embodiment, the chip is a display driving chip, and the first light emitting control signal, the first voltage signal, the second voltage signal, the shift control signal, and the main control signal are provided by the display driving chip.

In another embodiment, the chip is an application processor chip, and the application processor chip provides the first light emitting control signal, the first voltage signal, the second voltage signal, the shift control signal, and the main control signal.

In another embodiment, the chip includes a display driving chip and an application processor chip, the shift control signal includes a start signal, a clock signal and a reference voltage signal, wherein the display driving chip is configured to provide a first light emitting control signal to the first control terminal, a main control signal to the main control line, and a start signal and a clock signal to the plurality of shift units in cascade; the application processor chip is used for providing a first voltage signal to a first voltage terminal, providing a second voltage signal to a second voltage terminal and providing reference voltage signals to a plurality of cascaded shift units.

With continued reference to fig. 7, the first subunit 3111 includes a first transistor T1, a second transistor T2, and a first capacitor C1, where a control terminal and a first terminal of the first transistor T1 are electrically connected to the first control terminal S1, and a second terminal of the first transistor T1 is electrically connected to the first node N1; the control terminal of the second transistor T2 is electrically connected to the first node N1, the first terminal of the second transistor T2 is electrically connected to the first voltage terminal V1, and the second terminal of the second transistor T2 is electrically connected to the output terminal OUT1 of the light emission control unit 311. The first electrode of the first capacitor C1 is electrically connected to the first node N1, and the second electrode of the first capacitor C1 is electrically connected to the output terminal OUT1 of the light emission control unit 311. The second sub-unit 3112 includes a third transistor T3 and a fourth transistor T4, wherein a control terminal of the third transistor T3 and a control terminal of the fourth transistor T4 are electrically connected to the second control terminal S2, a first terminal of the third transistor T3 and a first terminal of the fourth transistor T4 are electrically connected to the second voltage terminal V2, a second terminal of the third transistor T3 is electrically connected to the first node N1, and a second terminal of the fourth transistor T4 is electrically connected to the output terminal OUT1 of the light emission control unit. The transistors in fig. 7 are all illustrated as n-type transistors, and the type of the transistors in the light emission control unit is not limited in the embodiment of the present application, and in another embodiment, the transistors in the light emission control unit may be p-type.

The operation of one light emission control unit 311 is described with reference to the timing chart of fig. 8. At time T11, the first control terminal S1 provides a high-level active signal, the first transistor T1 is turned on, the high-level signal is provided to the first node N1, the high-level signal of the first node N1 controls the second transistor T2 to be turned on, and the high-level signal of the first voltage terminal V1 is provided to the output terminal OUT1. At time T11, the first node N1 maintains a high potential due to the first capacitor C1, the second transistor T2 is continuously turned on, and the output terminal OUT1 continuously outputs a high level signal. When the light emitting switch 113 electrically connected to the light emitting control line 20 is turned on under the control of the high level signal, the output terminal OUT1 continuously outputs the active level signal at time t11 and time t12, and the sub-pixel column corresponding to the light emitting control unit can emit light.

At time T21, the second control terminal S2 provides an active high signal, the third transistor T3 and the fourth transistor T4 are turned on, and the third transistor T3 provides a low signal of the second voltage terminal V2 to the first node N1 after being turned on. The fourth transistor T4 is turned on to supply the low level signal of the second voltage terminal V2 to the output terminal OUT1. At time T22, the second transistor T2 and the fourth transistor T4 are turned off, the first node N1 maintains a low potential, and the output terminal OUT1 continuously outputs a low level signal due to the first capacitor C1. When the light emitting switch 113 electrically connected to the light emitting control line 20 is turned on under the control of the high level signal, the output terminal OUT1 continuously outputs the inactive level signal at time t21 and time t22, and the sub-pixel column corresponding to the light emitting control unit is turned off to emit no light.

Specifically, fig. 9 is a schematic diagram of another alternative implementation of the display device provided in the embodiment of the present application. As shown in fig. 9, the switching unit 322 includes a transistor having a control terminal electrically connected to the main control line 321, a first terminal electrically connected to an output terminal of the shifting unit 323, and a second terminal electrically connected to a second control terminal of the light emission control unit 311. The light emission control unit 311 in fig. 9 adopts the light emission control unit in the embodiment of fig. 7, and the second terminal of the transistor is electrically connected to the control terminal of the third transistor T3 and the control terminal of the fourth transistor T4 in the light emission control unit 311.

FIG. 10 is a timing diagram of the defect repair module of FIG. 9. As illustrated in fig. 10, the first voltage terminal V1 provides a high level signal, the second voltage terminal V2 provides a low level signal, and the first control terminal S1 provides an active level signal at time p 1. As can be seen from the description of the operation of the light-emitting control unit in the embodiment of fig. 8, when the output terminal OUT1 of the light-emitting control unit 311 outputs the high-level signal provided by the first voltage terminal V1 at the time p1, the light-emitting control line 20-a, the light-emitting control line 20-b and the light-emitting control line 20-c are all high-level signals, the corresponding light-emitting switch 113 is turned on, and the pixel driving circuit 112 is electrically connected to the light-emitting device 111. At time p2, the light emission control unit 311 connected to the light emission control line 20-a, the light emission control line 20-b, and the light emission control line 20-c, respectively, continuously outputs a high level signal.

The cascade-connected shift units 323 can sequentially output the effective level signals, as shown in fig. 10, the output terminal OUT of the shift unit 323-a, the output terminal OUT of the shift unit 323-b, and the output terminal OUT of the shift unit 323-c sequentially output the effective level signals. At time p3, the output terminal OUT of the shifting unit 323-a outputs a high level signal, when the main control line 321 provides a low level signal, the switching unit 322 electrically connected to the shifting unit 323-a is turned off, the shifting unit 323-a cannot provide a high level signal to the second control terminal of the light emission control unit 311, and the output terminal OUT1 of the light emission control unit 311 continues to provide a high level signal to the light emission control line 20-a. Similarly, at time p5, the output terminal OUT of the shifting unit 323-c outputs a high-level signal, and the main control line 321 supplies a low-level signal, and the output terminal OUT1 of the corresponding light-emitting control unit 311 continues to supply a high-level signal to the light-emitting control line 20-c. And at time p4, the output terminal OUT of the shifting unit 323-b outputs a high level signal, and the main control line 321 provides the high level signal, the switching unit 322 electrically connected to the shifting unit 323-b is turned on, and the output terminal OUT of the shifting unit 323-b provides the high level signal to the second control terminal of the light emission control unit 311. As can be seen from the description of the operation of the light emission control unit in the embodiment of fig. 8, at the time p4, the output terminal OUT1 of the light emission control unit 311 electrically connected to the shift unit 323-b provides the inactive level signal of the low level to the light emission control line 20-b, so that the light emission switch 113 electrically connected to the light emission control line 20-b can be controlled to be turned off, and the first sub-pixel column corresponding to the light emission control line 20-b is turned off to emit no light.

According to the working process, the signals of the main control line and the signals of the output ends of the plurality of shifting units are matched, so that the control signals can be provided for the light-emitting control unit through the shifting units, the light-emitting control unit is controlled to provide non-effective level signals for the light-emitting control line electrically connected with the light-emitting control unit, and further the first sub-pixel column with display defects can be controlled to be closed, and bright lines are prevented from being displayed.

Specifically, the chip is further configured to generate a main control signal according to a position of the first subpixel column having the display defect in the pixel column group. As understood with reference to the above embodiments of fig. 9 and 10, when it is determined that the sub-pixel column corresponding to the light emission control line 20-b is the first sub-pixel column having the display defect, a main control signal is generated according to the position of the first sub-pixel column having the display defect. For example, if the first subpixel column having the display defect corresponds to the light emission control line 20-b, the corresponding generated main control signal provides an active level signal at time p4 in the timing chart of fig. 10, so as to control the switching unit 322 to be turned on, and the shifting unit 323-b provides an active level signal to the second control terminal of the light emission control unit 311, and the light emission control unit 311 provides a non-active level signal to the light emission control line 20-b, so as to control the first subpixel column having the display defect to be turned off and not emit light.

In this embodiment of the present application, the specific structure of the shift unit is not limited, and the shift unit may be any structure capable of implementing a shift function in the prior art. The following is only an illustration of the structure and operation of one type of displacement unit.

Fig. 11 is a schematic structural diagram of a shift unit in an embodiment of the present application. As shown in fig. 11, the shift unit 323 includes an output sub-unit 3231, a reset sub-unit 3232, and a second node N2; the output subunit 3231 is configured to control the output terminal OUT of the shift unit to output an active level signal under the control of the signal at the input terminal IN of the shift unit, the signal at the clock signal terminal CK, and the potential of the second node N2; the RESET subunit 3232 is configured to control the output terminal OUT of the shift unit to output a non-valid level signal under the control of the RESET signal of the shift unit, the signal of the reference voltage terminal V3, and the potential of the second node N2. That is, the input subunit 3231 is configured to control the output terminal OUT of the shift unit to output an active level signal, and the reset subunit 3232 is configured to reset the shift unit.

Specifically, with continued reference to fig. 11, the output sub-unit 3231 includes a fifth transistor T5 and a sixth transistor T6, the control terminal of the fifth transistor T5 and the first terminal of the fifth transistor T5 are both electrically connected to the input terminal IN of the shift unit, and the second terminal of the fifth transistor T5 is electrically connected to the second node N2; the control terminal of the sixth transistor T6 is electrically connected to the second node N2, the first terminal of the sixth transistor T6 is electrically connected to the clock signal terminal CK, and the second terminal of the sixth transistor T6 is electrically connected to the output terminal OUT of the shift unit; the reset subunit 3232 includes a seventh transistor T7 and an eighth transistor T8; the control end of the seventh transistor T7 and the control end of the eighth transistor T8 are electrically connected with a RESET end RESET of the shifting unit, and the first end of the seventh transistor T7 and the first end of the eighth transistor T8 are electrically connected with a third voltage end V3; the second end of the seventh transistor T7 is electrically connected with the second node N2, and the second end of the eighth transistor T8 is electrically connected with the output end OUT of the shifting unit; the shift unit comprises a second capacitor C2, a first polar plate of the second capacitor C2 is electrically connected with the second node N2, and a second polar plate of the second capacitor C2 is electrically connected with an output end OUT of the shift unit. The transistors of the shift cell in fig. 11 are also all illustrated as n-type transistors. In another embodiment, the crystal of the shift cell is a p-type transistor.

Fig. 12 is a timing diagram of the shift unit provided in the embodiment of fig. 11. As shown in fig. 12, three working phases of the shifting unit are illustrated. At time q1, the input terminal IN provides an active high signal, and the fifth transistor T5 is turned on, and the active high signal is written into the second node N2. The second node N2 is at a high level, and controls the sixth transistor T6 to be turned on, the clock signal terminal CK supplies a low level signal to the output terminal OUT of the shift unit, and the output terminal OUT shows a low level inactive level signal. At time q2, the second node N2 maintains a high level potential due to the second capacitor C2, the second node N2 controls the sixth transistor T6 to be turned on, the clock signal terminal CK supplies a high level signal to the output terminal OUT of the shift unit, and the output terminal OUT shows an active level signal of a high level. At time q3, the RESET terminal RESET supplies the high-level active signal, and the seventh transistor T7 and the eighth transistor T8 are turned on, the seventh transistor T7 supplies the low-level signal of the reference voltage terminal V3 to the second node N2, and the eighth transistor T8 supplies the low-level signal of the reference voltage terminal V3 to the output terminal OUT, at which time the output terminal OUT outputs the low-level inactive level signal. That is, at time q2, the shift unit outputs an active level signal, and at time q3, the shift unit is reset.

Fig. 13 is a schematic diagram of another alternative implementation of the display device provided in the embodiment of the present application, and fig. 13 illustrates a cascade connection manner of a plurality of shift units 323 in the defect repair module 30, where the shift units 323 are used as the shift units provided in fig. 11. The shift unit 323 includes an input terminal IN, an output terminal OUT, a RESET terminal RESET, a reference voltage terminal V3, and a clock signal terminal CK. The input terminal IN of the 1 st stage shift unit 323 is electrically connected to the start signal terminal; the input terminals IN of the remaining shift units 323 except for the 1 st stage shift unit 323 are electrically connected to the output terminal OUT of the shift unit 323 of the previous stage thereof, and the RESET terminal RESET of the shift unit is electrically connected to the output terminal OUT of the shift unit 323 of the next stage thereof. In fig. 13, cascaded shift units 323_m, 323_m+1, 323_m+2, 323_m+3, 323_m+4, and 323_m+5 are shown, where m is a positive integer.

The display panel is further provided with a first clock signal line 41, a second clock signal line 42 and a reference voltage signal line 43, wherein the first clock signal line 41 provides clock signals for the clock signal terminals CK of the shift units 323_m, 323_m+2, 323_m+4, the second clock signal line 42 provides clock signals for the clock signal terminals CK of the shift units 323_m+1, 323_m+3, 323_m+5, and the reference voltage signal line 43 provides voltage signals for the reference voltage terminals V3 of all the shift units 323.

FIG. 14 is a timing diagram of the defect repair module of FIG. 13. The operation of the individual displacement units can be understood with reference to the embodiments of fig. 11 and 12 described above. As shown in fig. 14, the cascade-connected shift units are supplied with one start signal STV, and the output terminals OUT of the plurality of shift units can sequentially output the effective level signals by the cooperation of the start signal STV with the first clock signal line 41, the second clock signal line 42, and the reference voltage signal line 43. As illustrated in fig. 14, at time W1, the output terminal OUT of the shift unit 323_m+3 outputs an active level signal, and the main control line 321 supplies the active level signal, the switching unit 322 electrically connected to the shift unit 323_m+3 is turned on, the output terminal OUT of the shift unit 323_m+3 supplies the active level signal to the light emission control unit 311, and the corresponding light emission control unit 311 supplies the light emission control line 20-d with a low level inactive level signal. So that the sub-pixel columns 10-d corresponding to the emission control lines 20-d can be controlled to be turned off without emitting light.

In an embodiment, the display device provided in the embodiment of the present application further includes a defect detection module, and in particular, fig. 15 is a schematic diagram of another alternative implementation of the display device provided in the embodiment of the present application, as shown in fig. 15, the display device further includes a defect detection module 80 and a defect repair module 30, where the defect detection module 80 is configured to perform line defect detection on a signal line 81 electrically connected to the pixel driving circuit 112, where the signal line 81 may be a data line. The defect detection module is used for detecting line defects in the display device, and in application, the working process of the display device comprises a defect detection stage and a defect repair stage. The method comprises the steps of detecting a linear defect through a defect detection module in a defect detection stage, determining a first sub-pixel column with a display defect, and repairing a display bright line of the first sub-pixel column caused by the linear defect through a defect repair module in a defect repair stage. When the display device has the line defect, the automatic detection and the automatic repair of the display device can be realized, the factory return detection and the repair are not needed, the repair cost is reduced, and the user experience is improved.

Fig. 16 is a schematic diagram of another alternative implementation of the display device provided in the embodiment of the present application, fig. 17 is a schematic diagram of another alternative implementation of the display device provided in the embodiment of the present application, and fig. 16 and 17 each show a display area AA and a non-display area BB of a display device 001, where the display device 001 includes a plurality of data lines DL and a plurality of light-emitting control lines 20, the plurality of data lines DL are respectively electrically connected with the defect detection module 80, and the plurality of light-emitting control lines 20 are respectively electrically connected with the defect repair module 30. The defect detection module 80 and the defect repair module 30 are both located in the non-display area BB.

In the embodiment of fig. 16, the display driver chip 70 is bonded to the non-display region BB of the display device 001, and the plurality of data lines DL are electrically connected to the display driver chip 70 through the multiplexing circuit 60, and the display driver chip 70 supplies data signals to the data lines DL through the multiplexing circuit 60. The defect repair module 30 and the display driving chip 70 are disposed at both sides of the display area AA in the second direction y, respectively, and the defect detection module 80 and the defect repair module 30 are disposed at the same side, and the defect detection module 80 is electrically connected to the display driving chip 70 through the wire 62 disposed at the non-display area BB. The defect repair module 30 is electrically connected to the display driving chip 70 through the wire 61 disposed in the non-display area BB. In use, the display driver chip 70 is electrically connected to the system board 003 via the flexible circuit board 002.

In the embodiment of fig. 17, unlike the embodiment of fig. 16, the display driver Chip 70 is fixed to a flexible wiring board 004 to form a Chip On Film (COF), and the flexible wiring board 004 is bonded to the display device 001. In use, the display driver chip 70 is electrically connected to the flexible circuit board 005 through traces in the flexible circuit board 004, and the display driver chip 70 is electrically connected to the system board 003 through the flexible circuit board 005. Wherein the system board 003 includes an application processor chip.

The embodiment of the application also provides a repairing method of a display device, which is used for repairing the defect of the display device provided by any embodiment of the application, fig. 18 is a flowchart of the repairing method provided by the embodiment of the application, and as shown in fig. 18, the repairing method of the defect includes:

step S101: when it is determined that a display defect exists in a first sub-pixel column in the pixel column group, the defect repair module is controlled to provide a non-active level signal to a first light-emitting control line so that the first sub-pixel column does not emit light, wherein the first light-emitting control line is a light-emitting control line corresponding to the first sub-pixel column. When the first sub-pixel column has display defects, the defect repair module controls the first sub-pixel column not to emit light so as to prevent the display abnormality of the first sub-pixel column from affecting the whole display effect, thereby ensuring the visual experience of a user.

Further, fig. 19 is another flowchart of a repair method according to an embodiment of the present application, where, as shown in fig. 19, the defect repair method includes:

step S201: upon determining that a display defect exists in a first sub-pixel column of the pixel column group, the defect repair module is controlled to provide an inactive level signal to the first light emission control line such that the first sub-pixel column does not emit light.

Step S202: adjusting the image data to be displayed to obtain adjusted image data so as to match a repair array, wherein the repair array is a part of arrays which can be used for display in the sub-pixel array when the first sub-pixel array has display defects; and controlling the repair array to display specified content according to the adjusted image data.

In the repairing method provided by the embodiment, the non-effective level signal is provided to the light-emitting control line corresponding to the first sub-pixel column with the display defect, so that the light-emitting control line controls the corresponding light-emitting switch to be turned off, and the pixel driving circuit is disconnected from the light-emitting device. When in display, the first sub-pixel column with display defects does not emit light, so that display abnormality is prevented from affecting the display effect. Furthermore, the output of the image data is adjusted according to the repair array, the integrity of image display is guaranteed, and the influence of the loss of the image data on the display effect caused by closing the first sub-pixel column is avoided.

Further, fig. 20 is another flowchart of a repair method according to an embodiment of the present application, where, as shown in fig. 20, the defect repair method includes:

step S301: when it is determined that the first sub-pixel column in the pixel column group has a display defect, controlling the defect repair module to provide an inactive level signal to the first light emitting control line so that the first sub-pixel column does not emit light; the control defect repair module provides a non-effective level signal to the second light-emitting control line so that the second sub-pixel column does not emit light, wherein the sub-pixel columns positioned between the first sub-pixel column and the first non-display area are all second sub-pixel columns, and the second light-emitting control line is a light-emitting control line corresponding to the second sub-pixel column.

Step S302: adjusting the image data to be displayed to obtain adjusted image data so as to match a repair array, wherein the repair array is a part of arrays which can be used for display in the sub-pixel array when the first sub-pixel array has display defects; and controlling the repair array to display specified content according to the adjusted image data.

In this embodiment, when the defective first subpixel column is not adjacent to the first non-display area in the first direction, the subpixel column between the first subpixel column and the first non-display area is controlled not to emit light either. The repairing method is applicable to the display device provided in the embodiments of fig. 3 and 4, in which the pixel array group is adjacent to the first non-display area in the first direction. When the first sub-pixel column with display defect is not adjacent to the first non-display, the first sub-pixel column with display defect and the sub-pixel column between the first sub-pixel column with display defect and the non-display area with the nearer distance are controlled to be closed and not to emit light, so that abnormal display at the edge of the display picture is avoided. And further, the remaining part which can be used for display in the sub-pixel array is marked as a repair array, and the output of the image data is adjusted according to the repair array, so that the integrity of the picture display is ensured.

The embodiments of the present application also provide a storage medium, which includes a computer program, where the computer program is executable by a processor to complete the repair method in the above embodiments of the present application.

The embodiment of the application also provides a display driving chip for controlling defect repair of the display panel provided by the embodiment of the application, and fig. 21 is a schematic structural diagram of the display driving chip provided by the embodiment of the application. As shown in fig. 21, the display driving chip includes a control unit 400 and an input-output unit 500. The control unit 400 is configured to instruct the input-output unit 500 to supply signals to the plurality of signal lines to control the sub-pixel array connected to the display driving chip to display specified contents when it is determined that the display stage is entered.

The control unit 400 is further configured to instruct the input/output unit 500 to provide a control signal to a defect repair module connected to the display driving chip when it is determined that the first sub-pixel column in the pixel column group has a display defect, so as to control the defect repair module to control the supply of the inactive level signal to the first light emitting control line, where when the inactive level signal is transmitted by the first light emitting control line, the first sub-pixel column corresponding to the inactive level signal does not emit light, and the first sub-pixel column is a sub-pixel column having a display defect in the sub-pixel array.

Further, the control unit 400 is further configured to adjust the image data to be displayed to obtain adjusted image data, so as to match with a repair array, where the repair array is a partial array that can be used for display in the sub-pixel array when the first sub-pixel column has a display defect; and instructs the input-output unit 500 to supply signals to control the sub-pixel array connected to the display driving chip to display specified contents, including: the adjusted image data is provided to control the repair array to display the specified content.

The embodiment of the application also provides a device, and fig. 22 is a schematic diagram of the device provided in the embodiment of the application. As shown in fig. 22, the apparatus includes a display device 001 provided in any embodiment of the present application. The specific structure of the display device 001 has been described in detail in the above embodiments, and will not be described here again. Of course, the device shown in fig. 22 is only illustrative, and may be any electronic device with display function, such as a mobile phone, a tablet computer, a notebook computer, an electronic book, a television, a smart watch, and the like.

The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather to enable any modification, equivalent replacement, improvement or the like to be made within the spirit and principles of the invention.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.

Claims

1. A display device, characterized in that the display device comprises:

a subpixel array including at least one pixel column group, the pixel column group being a portion of the subpixel array, each of the pixel column groups including a plurality of subpixel columns sequentially arranged in a first direction, the subpixel columns including a plurality of subpixels, the subpixels including a light emitting device, a pixel driving circuit, and a light emitting switch, the pixel driving circuit being electrically connected with the light emitting device through the light emitting switch; wherein, when the control end of the light-emitting switch receives an effective level signal, the pixel driving circuit and the light-emitting device are conducted;

A plurality of light-emitting control lines extending along a second direction, wherein the second direction intersects with the first direction, and control ends of a plurality of light-emitting switches in one sub-pixel column are electrically connected with the same light-emitting control line;

the light-emitting control line is electrically connected with the defect repair module;

a chip for controlling the sub-pixel array through a plurality of signal lines to display specified contents; the defect repair module is electrically connected with the chip; the chip is used for controlling the defect repair module to provide a non-effective level signal to a first light-emitting control line when determining that a first sub-pixel column in the pixel column group has a display defect, so that the sub-pixels in the first sub-pixel column do not emit light, and the first light-emitting control line is a light-emitting control line corresponding to the first sub-pixel column.

2. The display device of claim 1, wherein the display device comprises a display device,

the controlling the defect repair module to provide a non-active level signal to a first light emitting control line includes: and before a screen is displayed on a bright screen, controlling the defect repair module to provide a non-effective level signal for the first light emitting control line.

3. The display device of claim 1, wherein the display device comprises a display device,

the chip is used for controlling the sub-pixel array through a plurality of signal lines to display specified contents, and comprises the following components: upon determining that a display defect exists for a first subpixel column of the set of pixel columns,

adjusting the image data to be displayed to obtain adjusted image data so as to match a repair array, wherein the repair array is a part of arrays which can be used for display in the sub-pixel array when the first sub-pixel array has display defects;

and controlling the repair array through the plurality of signal lines according to the adjusted image data to display specified contents.

4. The display device of claim 1, wherein the display device comprises a display region and a non-display region surrounding the display region, the array of subpixels being located in the display region; in the first direction, the pixel column group is adjacent to a first non-display area;

the chip is further configured to control the defect repair module to provide a non-active level signal to a second emission control line when it is determined that a first subpixel column in the pixel column group has a display defect, where the subpixel columns located between the first subpixel column and the first non-display area are both second subpixel columns, and the second emission control line is an emission control line corresponding to the second subpixel columns.

5. The display device of claim 4, wherein the display device comprises a display panel,

the defect repair module comprises a light-emitting control module and a closing selection module; wherein,,

the light-emitting control module comprises a plurality of light-emitting control units, the light-emitting control units are in one-to-one correspondence with the light-emitting control lines, and the light-emitting control lines are electrically connected with the output ends of the light-emitting control units;

the light-emitting control unit comprises a first subunit and a second subunit, wherein the first subunit is used for controlling the output end of the light-emitting control unit to output an effective level signal under the control of a signal of a first control end, a signal of a first voltage end and a first node potential; the second subunit is configured to control, under control of a signal of a second control end, a signal of a second voltage end, and the first node potential, an output end of the light-emitting control unit to output a non-valid level signal;

the switch-off selection module comprises a main control line, a plurality of switch units and a plurality of cascaded shift units, wherein the control ends of the switch units are electrically connected with the main control line, the first ends of the switch units are electrically connected with the output ends of the shift units, the second ends of the switch units are electrically connected with the second control ends of the light-emitting control units, and the switch units are used for conducting the first ends and the second ends of the switch units when the control ends of the switch units receive effective level signals;

The controlling the defect repair module to provide a non-active level signal to a first light emitting control line specifically includes: the chip provides a first light-emitting control signal to the first control end, provides a first voltage signal to the first voltage end, and provides a second voltage signal to the second voltage end so as to control the plurality of light-emitting control units to work;

the chip provides a main control signal for the main control line, wherein the main control signal is used for controlling the first end and the second end of the switch unit which are electrically connected with the first light-emitting control unit to be conducted so as to provide the effective level signal output by the shifting unit for the first light-emitting control unit and control the output end of the first light-emitting control unit to output an ineffective level signal, and the first light-emitting control unit is a light-emitting control unit which is electrically connected with the first light-emitting control line.

6. The display device of claim 5, wherein the display device comprises a display device,

the controlling the defect repair module to provide a non-active level signal to a second light-emitting control line specifically includes:

The main control signal is also used for controlling the first end and the second end of the switch unit which are electrically connected with the second light-emitting control unit to be conducted so as to provide the effective level signal output by the shift unit for the second light-emitting control unit and control the output end of the second light-emitting control unit to output the non-effective level signal, wherein the second light-emitting control unit is a light-emitting control unit which is electrically connected with the second light-emitting control line.

7. The display device of claim 5, wherein the display device comprises a display device,

the first subunit includes a first transistor, a second transistor, and a first capacitor, wherein,

the control end and the first end of the first transistor are electrically connected with the first control end, and the second end of the first transistor is electrically connected with the first node; the control end of the second transistor is electrically connected with the first node, the first end of the second transistor is electrically connected with the first voltage end, and the second end of the second transistor is electrically connected with the output end of the light-emitting control unit; the first polar plate of the first capacitor is electrically connected with the first node, and the second polar plate of the first capacitor is electrically connected with the output end of the light-emitting control unit.

8. The display device of claim 5, wherein the display device comprises a display device,

the second subunit includes a third transistor and a fourth transistor, wherein,

the control end of the third transistor and the control end of the fourth transistor are electrically connected with the second control end, the first end of the third transistor and the first end of the fourth transistor are electrically connected with the second voltage end, the second end of the third transistor is electrically connected with the first node, and the second end of the fourth transistor is electrically connected with the output end of the light-emitting control unit.

9. The display device of claim 5, wherein the display device comprises a display device,

the chip is a display driving chip or an application processor chip; or,

the chip comprises a display driving chip and an application processor chip; the shift control signal comprises a start signal, a clock signal and a reference voltage signal, wherein the display driving chip is used for providing the first light emitting control signal for the first control end, providing the main control signal for the main control line and providing the start signal and the clock signal for the plurality of shift units in cascade connection; the application processor chip is configured to provide the first voltage signal to the first voltage terminal, the second voltage signal to the second voltage terminal, and the reference voltage signal to the cascaded plurality of shift units.

10. A repair method of a display device, the display device comprising:

the light-emitting control line is electrically connected with the defect repair module; the repairing method is characterized by comprising the following steps:

and when the display defect exists in the first sub-pixel column in the pixel column group, controlling the defect repair module to provide a non-effective level signal to a first light-emitting control line so that the first sub-pixel column does not emit light, wherein the first light-emitting control line is a light-emitting control line corresponding to the first sub-pixel column.

11. The repair method of claim 10 wherein controlling the defect repair module to provide a non-active level signal to a first light emission control line such that the first subpixel column does not emit light comprises:

and before a screen is displayed on a bright screen, controlling the defect repair module to provide an inactive level signal to the first light emitting control line so that the first sub-pixel column does not emit light.

12. The repair method of claim 10, further comprising:

upon determining that a display defect exists for a first subpixel column of the set of pixel columns,

and controlling the repair array to display specified content according to the adjusted image data.

13. The repair method of claim 10, the display device comprising a display region and a non-display region surrounding the display region, the array of subpixels being located in the display region; in the first direction, the pixel column group is adjacent to a first non-display area; the repairing method is characterized by further comprising the following steps:

And when the display defect exists in the first sub-pixel column in the pixel column group, controlling the defect repair module to provide a non-effective level signal to a second light-emitting control line so as to enable the second sub-pixel column not to emit light, wherein the sub-pixel columns positioned between the first sub-pixel column and the first non-display area are all second sub-pixel columns, and the second light-emitting control line is a light-emitting control line corresponding to the second sub-pixel column.

14. A storage medium comprising a computer program, wherein the computer program is executable by a processor to perform the repair method of any one of claims 10 to 13.

15. A display driver chip, wherein the display driver chip is configured to:

providing signals to control a sub-pixel array connected with the display driving chip to display specified contents;

and providing a control signal, wherein the control signal is used for controlling a defect repair module electrically connected with the display driving chip to provide an inactive level signal for a first light-emitting control line, and when the inactive level signal is transmitted by the first light-emitting control line, a first sub-pixel column corresponding to the inactive level signal does not emit light, and the first sub-pixel column is a sub-pixel column with display defects in the sub-pixel array.

16. The display driver chip of claim 15, wherein the display driver chip,

the display driving chip is further used for adjusting the image data to be displayed to obtain adjusted image data so as to match a repair array, wherein the repair array is a part of arrays which can be used for display in the sub-pixel array when the first sub-pixel array has display defects;

the providing a signal to control a subpixel array connected to the display driving chip to display specified contents includes: and providing the adjusted image data to control the repair array to display specified content.

17. A display electronic device comprising the display apparatus according to any one of claims 1 to 9.