Display apparatus, drive chip, and electronic device

Patent metadata

Field	Value
Publication number	US-11922847-B2
Application number	US-202117795688-A
Country	US
Kind code	B2
Filing date	Sep 22, 2021
Priority date	Sep 30, 2020
Publication date	Mar 5, 2024
Grant date	Mar 5, 2024

Abstract

Disclosed are a display apparatus, a drive chip, and an electronic device. When determining that a disconnected signal line exists, a drive chip sends a control signal to a signal line repair module, so that a shift output end of a first shift unit corresponding to the disconnected signal line outputs an enable signal, so as to control a corresponding connection switch in a connection switch group to be turned on, to enable the disconnected signal line to be electrically connected to a repair line. The display apparatus may repair a disconnected signal line without being returned to a factory and a manual operation.

First claim

What is claimed is:

1. A display apparatus, comprising:
a plurality of sub-pixels, wherein the sub-pixels are used for light-emitting display;
a plurality of signal lines, wherein the plurality of signal lines are electrically connected to the sub-pixels and provide a signal required for light-emitting display to the sub-pixels;
a signal line repair module, wherein the signal line repair module is electrically connected to the plurality of signal lines, and configured to repair a disconnected signal line; and the signal line repair module comprises:
at least one repair line;
at least one connection switch group, wherein the at least one connection switch group is disposed in a one-to-one correspondence with the at least one repair line; the connection switch group comprises a plurality of connection switches, the plurality of connection switches in a same connection switch group are disposed in a one-to-one correspondence with the plurality of signal lines, input ends of the connection switches are electrically connected to corresponding signal lines in the plurality of signal lines, and output ends thereof are each electrically connected to a corresponding repair line in the at least one repair line; and
a first shift unit group, wherein the first shift unit group comprises a plurality of stages of first shift units, and the plurality of connection switches in each connection switch group are disposed in a one-to-one correspondence with the plurality of stages of first shift units; each first shift unit comprises a shift output end, and the shift output end of the first shift unit is electrically connected to a control end of a corresponding connection switch; and
a drive chip, wherein the drive chip is electrically connected to the plurality of signal lines and the signal line repair module, and is configured to provide the signal required for controlling the light-emitting display of the sub-pixels to the signal lines, and send, when determining that a disconnected signal line exists, a control signal to the signal line repair module, to enable the disconnected signal line to be electrically connected to the at least one repair line in the signal line repair module; and sending the control signal to the signal line repair module, to enable the disconnected signal line to be electrically connected to the at least one repair line in the signal line repair module comprises: sending the control signal to the signal line repair module, so that the shift output end of the first shift unit corresponding to the disconnected signal line outputs an enable signal, so as to control a corresponding connection switch in a connection switch group to be turned on, to enable the disconnected signal line to be electrically connected to the at least one repair line.

2. The display apparatus according to claim 1 , wherein the plurality of stages of first shift units in the first shift unit group are sequentially cascaded.

3. The display apparatus according to claim 1 , wherein one or more repair lines of the at least one repair line are reused as a detection line, and the one or more repair lines reused as the detection line is configured to transmit a signal on a signal line to the drive chip;
the connection switch group corresponding to the one or more repair lines reused as the detection line is reused as a detection switch group, and the connection switches in the connection switch group reused as the detection switch group are reused as detection switches, and when the detection switches are turned on, the signal on the signal line electrically connected to an output end of each detection switch is transmitted to the corresponding repair line that is electrically connected to the output end and reused as the detection line; and
the signal line repair module further comprises:
a second reset signal line, configured to obtain a reset signal from the drive chip and transmit the reset signal to the one or more repair lines reused as the detection line; and
reset switches, wherein an input end of each reset switch is electrically connected to the one or more repair line reused as the detection line, an output end thereof is electrically connected to the second reset signal line, and when the reset switch is turned on, the reset signal transmitted on the reset line electrically connected to the input end of the reset switch is transmitted to the one or more repair lines reused as the detection line.

4. The display apparatus according to claim 3 , wherein a plurality of reset switches and a plurality of connection switches in a connection switch group reused as the detection switch group are alternately disposed one to one.

5. The display apparatus according to claim 4 , wherein the signal line repair module further comprises a plurality of reset shift units that are disposed in a one-to-one correspondence with the reset switches, and shift output ends of the reset shift units are electrically connected to control ends of corresponding reset switches; a signal output by the shift output ends of the reset shift units controls the reset switches to be turned on or turned off; and the reset shift units and the first shift units are disposed in a one-to-one correspondence and cascaded.

6. The display apparatus according to claim 1 , wherein the signal line repair module comprises:
a plurality of repair lines;
a plurality of connection switch groups, wherein output ends of connection switches in different connection switch groups are electrically connected to different one of the plurality of repair lines respectively;
a plurality of storage capacitor groups, wherein the plurality of storage capacitor groups are disposed in a one-to-one correspondence with the plurality of connection switch groups; each storage capacitor group comprises a plurality of storage capacitors, the plurality of storage capacitors in each storage capacitor group are in a one-to-one correspondence with the plurality of connection switches in the corresponding connection switch group, and first polar plates of the storage capacitors are electrically connected to control ends of the corresponding connection switches;
a plurality of selector switch groups, wherein the plurality of selector switch groups are disposed in a one-to-one correspondence with the plurality of storage capacitor groups; each selector switch group comprises a plurality of selector switches, the plurality of selector switches in each selector switch group are in a one-to-one correspondence with the plurality of storage capacitors in the corresponding storage capacitor group, output ends of the selector switches are electrically connected to second polar plates of the corresponding storage capacitors, and input ends of the selector switches are electrically connected to shift output ends of corresponding first shift units; and
a plurality of selection signal lines, wherein the plurality of selection signal lines are disposed in a one-to-one correspondence with the plurality of selector switch groups, and the selection signal lines are electrically connected to control ends of the plurality of selector switches in the corresponding selector switch groups; and
sending the control signal by the drive chip to the signal line repair module comprises sending a selection signal to the selection signal line, so that the connection switch electrically connected to the selection signal line transmitting the selection signal is turned on, and an enable signal output by the first shift unit is transmitted to a control end of a corresponding connection switch, so that the corresponding connection switch is turned on.

7. The display apparatus according to claim 6 , wherein one repair line is reused as a detection line, and a time for electrical connection between the

Assignees

• Honor Device Co Ltd

Inventors

• Chen Pengming
• Liang Jide
• Li Ruiliang
• Zhang Feng
• Deng Jiandong
• Li Muyao

Classifications

• G09G3/20 Primary

  for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix {no fixed position being assigned to or needed to be assigned to the individual characters or partial characters} · CPC title

• G09G2330/08

  Fault-tolerant or redundant circuits, or circuits in which repair of defects is prepared · CPC title

• G09G3/3225 Primary

  using an active matrix · CPC title

• G09G3/3648

  using an active matrix (G09G3/367 - G09G3/3696 take precedence) · CPC title

• G09G2310/0286

  Details of a shift registers arranged for use in a driving circuit · CPC title