Display substrate including decoder and gate circuit, driving method, and display panel

Patent metadata

Field	Value
Publication number	US-11645993-B2
Application number	US-202017622181-A
Country	US
Kind code	B2
Filing date	Dec 1, 2020
Priority date	Dec 1, 2020
Publication date	May 9, 2023
Grant date	May 9, 2023

Abstract

A display substrate has a display area and a peripheral area around the display area. The display substrate includes a plurality of sub-pixels arranged in an array in the display area, and an interface circuit, at least two serial-to-parallel converters and at least one display driver that are in the peripheral area. The interface circuit is configured to receive target data including a plurality of serial display data. A serial-to-parallel converter in the at least two serial-to-parallel converters is used to convert the plurality of serial display data into parallel display data. The serial-to-parallel converter is electrically connected to one display driver to provide the parallel display data to the display driver. The display driver is used to output display driving signals to a plurality of sub-pixels according to the parallel display data.

First claim

What is claimed is:

1. A display substrate, having a display area and a peripheral area around the display area, the display substrate comprising:
a plurality of sub-pixels arranged in an array in the display area;
an interface circuit located in the peripheral area and used to receive target data, the target data including a plurality of serial display data;
at least two serial-to-parallel converters in the peripheral area, a serial-to-parallel converter in the at least two serial-to-parallel converters being electrically connected to the interface circuit and used to convert the plurality of serial display data into parallel display data;
at least one display driver in the peripheral area, the serial-to-parallel converter being electrically connected to at least one display driver to provide the parallel display data to the display driver, and the display driver being used to output display driving signals to sub-pixels according to the parallel display data;
a decoder located in the peripheral area; and
a gate circuit electrically connected to the decoder, wherein
the interface circuit includes at least two data output terminals connected to the serial-to-parallel converters in one-to-one correspondence;
the interface circuit is further used to output the target data to the serial-to-parallel converters through the data output terminals according to a received clock signal and a received chip selection signal;
the target data further include address information, and the address information includes S address data, and S is an integer greater than or equal to 2;
the interface circuit is further used to obtain the address information in the target data;
the interface circuit is further used to output at least some of the S address data to at least one serial-to-parallel converter through at least one data output terminal according to the received clock signal and the received chip selection signal;
the interface circuit is used to output the S address data to one serial-to-parallel converter through one data output terminal; or
the interface circuit is used to output the S address data to a plurality of serial-to-parallel converters through a plurality of data output terminals, address data output from different data output terminals are different, and a total number of the address data output from all the plurality of data output terminals is S;
the decoder is electrically connected to at least one serial-to-parallel converter, and used to receive the S address data output from the at least one serial-to-parallel converter and generate a row gate signal; and
the decoder is further used to output the row gate signal to the gate circuit.

2. The display substrate according to claim 1 , wherein
the display substrate further comprises a plurality of data lines extending in a first direction and a plurality of gate signal lines extending in a second direction, and the first direction and the second direction intersect;
a data line in the plurality of data lines is used to output a display driving signal to at least one sub-pixel, and a gate signal line in the plurality of gate signal lines is used to output the row gate signal to at least one sub-pixel.

3. The display substrate according to claim 2 , wherein
a number of the at least one display driver is N, and N is an integer greater than or equal to 2; each display driver is connected to at least one data line, and the display driver outputs a display driving signal in the display driving signals to sub-pixels through the at least one data line;
the serial-to-parallel converters are connected to the display drivers in one-to-one correspondence.

4. The display substrate according to claim 2 , wherein
the gate circuit is located in the peripheral area, and the gate circuit is connected to at least one of the gate signal lines, and outputs the row gate signal to the at least one gate signal line.

5. The display substrate according to claim 1 , wherein
the serial-to-parallel converter includes a plurality of cascaded D flip-flops; an output terminal of a previous stage D flip-flop is electrically connected to an input terminal of an adjacent next stage D flip-flop; an input terminal of a first stage D flip-flop is electrically connected to a corresponding data output terminal;
an output terminal of each D flip-flop in a same serial-to-parallel converter is electrically connected to a same display driver.

6. A display panel, comprising the display substrate according to claim 1 .

7. The display substrate according to claim 1 , wherein
the target data further include mode information, and the mode information includes J mode data, and J is an integer greater than or equal to 2;
the interface circuit is further used to obtain the mode information in the target data;
the interface circuit is further used to output at least some of the J mode data to at least one serial-to-parallel converter through at least one data output terminal according to the received clock signal and the received chip selection signal.

8. The display substrate according to claim 7 , wherein
the interface circuit is used to output the J mode data to one serial-to-parallel converter through one data output terminal; or
the interface circuit is used to output the J mode data to a plurality of serial-to-parallel converters through a plurality of data output terminals, mode data output from different data output terminals are different, and a total number of the mode data output from all the plurality of data output terminals is J.

9. The display substrate according to claim 8 , wherein
the display substrate further comprises:
a mode controller located in the peripheral area, the mode controller being electrically connected to at least one serial-to-parallel converter, and used to receive the J mode data output from the at least one serial-to-parallel converter and electrically connect a first control signal terminal and a second control signal terminal in the display substrate according to the J mode data.

10. A driving method, comprising:
receiving, by an interface circuit, target data;
obtaining, by the interface circuit, a plurality of serial display data from the target data;
outputting, by the interface circuit, the plurality of serial display data to the at least two serial-to-parallel converters;
converting, by the at least two serial-to-parallel converters, obtained respective serial display data into parallel display data;
outputting, by the at least two serial-to-parallel converters, parallel display data to at least one display driver; and
outputting, by the display driver, display driving signals to sub-pixels according to the obtained parallel display data;
wherein outputting, by the interface circuit, the plurality of serial display data to the serial-to-parallel converters, includes:
outputting, by the interface circuit, the plurality of serial display data to the serial-to-parallel converters according to a received clock signal and a received chip selection signal;
wherein the target data further include address information, and the address information includes S address data, and S is an integer greater than or equal to 2; the method further includes:
obtaining, by the interface circuit, the address information in the target data; and
outputting, by the interface circuit, the S address data to one serial-to-parallel converter according to the received clock signal and the received chip selection signal; or,
outputting, by the interface circuit, the S address data to a plurality of serial-to-parallel converters, address data received by different serial-to-parallel converters being different, and a total number of the address data recei

Assignees

• Beijing Boe Optoelectronics Tech Co Ltd
• Boe Technology Group Co Ltd

Inventors

• Zhang Yehao
• Shi Meng
• Zhao Jing
• Huang Yadong
• Liang Dapeng
• Xu Zhenguo
• Chen Xiuyun

Classifications

• G09G3/3688 Primary

  suitable for active matrices only · CPC title

• G09G2310/0286

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

• G09G5/00

  Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators (image data processing or generation, in general G06T) · CPC title

• G09G2370/08

  Details of image data interface between the display device controller and the data line driver circuit · CPC title

• G09G3/3677

  suitable for active matrices only · CPC title