Electronic device and display driving method

Patent metadata

Field	Value
Publication number	US-12230189-B2
Application number	US-202218044311-A
Country	US
Kind code	B2
Filing date	Apr 24, 2022
Priority date	Apr 24, 2022
Publication date	Feb 18, 2025
Grant date	Feb 18, 2025

Abstract

Embodiments of the present disclosure provide an electronic device and a display driving method. The electronic device includes a plurality of device groups and a plurality of driving elements; a first terminal of at least one device group among the plurality of device groups is coupled with a positive signal line, a second terminal of at least one device group among the plurality of device groups is coupled with an output terminal of any one of the plurality of driving elements, and a reference voltage terminal of any one of the plurality of driving elements is configured to be coupled with a reference signal line.

First claim

What is claimed is:

1. An electronic device, comprising:
a plurality of device groups and a plurality of driving elements; wherein
a first terminal of at least one device group of the plurality of device groups is coupled with a positive signal line, a second terminal of at least one device group of the plurality of device groups is coupled with an output terminal of any one driving element of the plurality of driving elements, and a reference voltage terminal of the driving element of the plurality of driving elements is configured to be coupled with a reference signal line; and
the driving element of the plurality of driving elements is configured to: control the positive signal line and the reference voltage terminal of the driving element to form an electrical loop within a working time duration of a light-emitting period, and adjust a potential of the second terminal of the at least one device group coupled with the driving element before the working time duration of the light-emitting period;
wherein the driving element of the plurality of driving elements is further configured to control the second terminal of the device group coupled with the driving element to be on with the reference voltage terminal of the driving element for a first compensation time before the working time duration;
the driving element of the plurality of driving elements is further configured to control the second terminal of the device group coupled with the driving element to be on with the reference voltage terminal of the driving element for a second compensation time within the working time duration;
the first compensation time and the second compensation time are successively-continuous time durations;
for the at least one device group of the plurality of device groups, the second compensation time corresponding to the at least one device group is less than the first compensation time corresponding to the at least one device group.

2. The electronic device according to claim 1 , wherein the driving element of the plurality of driving elements is further configured to control the positive signal line to form the electrical loop at least successively through the device group coupled with the driving element, the output terminal of the driving element and the reference voltage terminal at an end moment of the first compensation time.

3. The electronic device according to claim 1 , wherein for the at least one device group among the plurality of device groups, the second compensation time corresponding to the at least one device group is less than half of the first compensation time corresponding to the at least one device group.

4. The electronic device according to claim 3 , wherein the at least one device group comprises a plurality of devices; and
each device of the plurality of devices is provided with a first compensation time and a second compensation time corresponding to the device, and the second compensation time corresponding to each device of the plurality of devices is less than half of the first compensation time corresponding to each device of the plurality of devices.

5. The electronic device according to claim 4 , wherein at least two devices of the plurality of devices respectively correspond to different first compensation times, wherein a first compensation time which is relatively larger among the different first compensation times corresponds to a second compensation time which is relatively larger.

6. The electronic device according to claim 4 , wherein second compensation times corresponding to at least part of the plurality of devices are the same.

7. The electronic device according to claim 1 , wherein the driving element of the plurality of driving elements is further configured to control the second terminal of the device group coupled with the driving element to be on with the reference voltage terminal of the driving element for a potential compensation time according to the potential compensation time pre-stored corresponding to the device group coupled with the driving element, wherein the potential compensation time is the first compensation time; or the potential compensation time is a sum of the first compensation time and the second compensation time.

8. The electronic device according to claim 7 , wherein the driving element of the plurality of driving elements comprises a processing control circuit and a data driving circuit; the data driving circuit is coupled with the processing control circuit, the output terminal and the reference voltage terminal respectively;
the processing control circuit is configured to: generate a light-emitting control signal within the light-emitting period and send the light-emitting control signal to the data driving circuit; and generate a potential adjusting control signal according to the potential compensation time and send the potential adjusting control signal to the data driving circuit; and
the data driving circuit is configured to: control the positive signal line to form the electrical loop successively through the device group coupled with the driving element, the output terminal of the driving element and the reference voltage terminal according to the received light-emitting control signal within the light-emitting period, and control the second terminal of the corresponding device group to be on with the reference voltage terminal according to an effective level of the received potential adjusting control signal, wherein a duration of the effective level of the potential adjusting control signal corresponding to the device group is the potential compensation time.

9. The electronic device according to claim 8 , wherein the data driving circuit comprises at least one data driving sub-circuit; one data driving sub-circuit is coupled with one output terminal; and
the data driving sub-circuit is configured to receive the light-emitting control signal and the potential adjusting control signal corresponding to the coupled device group, control the positive signal line to form the electrical loop successively through the device group coupled with the driving element, the output terminal of the driving element and the reference voltage terminal of the driving element in response to the light-emitting control signal, and control the second terminal of the coupled device group to be on with the reference voltage terminal in response to the potential adjusting control signal.

10. The electronic device according to claim 9 , wherein the light-emitting control signal comprises a driving control signal and a current control signal;
the data driving sub-circuit comprises a modulation circuit, a constant current source circuit and a potential adjusting circuit; wherein the constant current source circuit is coupled with the processing control circuit and the modulation circuit respectively, and the modulation circuit is coupled with an corresponding output terminal; the potential adjusting circuit is coupled with the processing control circuit and an corresponding output terminal respectively;
the constant current source circuit is configured to: receive the current control signal of the corresponding device group and output a current of a constant amplitude corresponding to the current control signal according to the received current control signal;
the modulation circuit is configured to: receive the driving control signal of the corresponding device group and input a current generated by the constant current source circuit to the coupled output terminal according to the effective level of the received driving control signal, so as to control the positive signal line to form the electrical loop at least successively through the device group coupled with the driving e

Assignees

• Boe Mled Technology Co Ltd
• Boe Technology Group Co Ltd

Inventors

• Li Xiuling
• Gu Qibing
• Hu Guofeng
• Fu Bao
• Huang Wenchieh
• Shi Lingyun

Classifications

• G09G2330/021

  Power management, e.g. power saving · CPC title

• G09G2310/08

  Details of timing specific for flat panels, other than clock recovery · CPC title

• G09G2310/0275

  Details of drivers for data electrodes, other than drivers for liquid crystal, plasma or OLED displays, not related to handling digital grey scale data or to communication of data to the pixels by means of a current · CPC title

• G09G2310/0202

  Addressing of scan or signal lines · CPC title

• G09G2310/027

  Details of drivers for data electrodes, the drivers handling digital grey scale data, e.g. use of D/A converters · CPC title