Display panel and display device

Patent metadata

Field	Value
Publication number	US-11869405-B2
Application number	US-202318103678-A
Country	US
Kind code	B2
Filing date	Jan 31, 2023
Priority date	Jun 28, 2022
Publication date	Jan 9, 2024
Grant date	Jan 9, 2024

Abstract

Provided display panel includes display region and non-display region. The display region includes display units arranged in array and scan signal lines. At least part display units in same row share respective scan signal line. The non-display region includes shift register circuit and connection lines. The shift register circuit includes cascaded shift register unit groups each including at least two shift register units each including signal input terminal, reset control terminal, and signal output terminal. Signal output terminal of first shift register unit in (i+1)-th shift register unit group electrically connected to signal input terminal of respective shift register unit in (i+2)-th shift register unit group through same connection line. Signal output terminal of second shift register unit in (i+1)-th shift register unit group electrically connected to reset control terminal of respective shift register unit in i-th shift register unit group through same connection line. i is positive integer.

First claim

What is claimed is:

1. A display panel, comprising:
a display region and a non-display region,
wherein the display region comprises a plurality of display units arranged in an array and a plurality of scan signal lines, wherein at least two of the plurality of display units in a same row share a respective one of the plurality of scan signal lines; and
the non-display region comprises a shift register circuit and a plurality of connection lines, wherein the shift register circuit comprises a plurality of cascaded shift register unit groups; each of the plurality of shift register unit groups comprises at least two shift register units; and each of the at least two shift register units comprises a signal input terminal, a reset control terminal, and a signal output terminal,
wherein each of the plurality of shift register unit groups comprises a first shift register unit and a second shift register unit, wherein among three consecutive shift register unit groups of the plurality of shift register unit groups, a signal output terminal of a first shift register unit in an (i+1)-th shift register unit group is electrically connected to a signal input terminal of each shift register unit in an (i+2)-th shift register unit group through a same connection line of the plurality of connection lines, and a signal output terminal of a second shift register unit in the (i+1)-th shift register unit group is electrically connected to a reset control terminal of each shift register unit in an i-th shift register unit group through a same connection line of the plurality of connection lines, and wherein i is a positive integer; and
wherein the signal output terminal of each of the at least two shift register units is electrically connected to a respective one of the plurality of scan signal lines, and a scan signal enable level output from the signal output terminal of each of the at least two shift register units is sequentially shifted.

2. The display panel according to claim 1 , wherein a signal input terminal of each shift register unit in a first shift register unit group is configured to receive a start pulse signal through a same connection line of the plurality of connection lines, and a signal output terminal of a first shift register unit in the first shift register unit group is electrically connected to a signal input terminal of each shift register unit in a second shift register unit group through a same connection line of the plurality of connection lines; and
a reset control terminal of each shift register unit in a last shift register unit group is configured to receive a reset pulse signal through a same connection line of the plurality of connection lines, and a signal output terminal of a second shift register unit in the last shift register unit group is electrically connected to a reset control terminal of each shift register unit in a previous shift register unit group through a same connection line of the plurality of connection lines.

3. The display panel according to claim 1 , wherein each of the plurality of shift register unit groups comprises at least one third shift register unit, and a signal output terminal of each of the at least one third shift register unit is electrically connected to a respective one of the plurality of scan signal lines and is not electrically connected to a respective one of the plurality of connection lines.

4. The display panel according to claim 1 , wherein the plurality of connection lines comprises first connection lines, and a signal input terminal of each shift register unit in a same shift register unit group is electrically connected to a same first connection line,
wherein the first connection lines extend in a first direction and the first connection lines each electrically connected to each shift register unit in different shift register unit groups are insulated from each other; in the first direction, first connection lines electrically connected to each shift register unit in the i-th shift register unit group overlaps at least two of first connection lines electrically connected to each shift register unit in a j-th shift register unit group, wherein i and j are both positive integers and i≠j; and the first direction intersects a row direction of the plurality of display units.

5. The display panel according to claim 1 , wherein the plurality of connection lines comprises second connection lines; and a reset control terminal of each shift register unit in a same shift register unit group is electrically connected to a same second connection line, wherein
the second connection lines extends in a first direction, and the second connection lines each electrically connected to each shift register unit in different shift register unit groups are insulated from each other, and each of the second connection lines and each of the first connection lines, connected to each shift register unit in a same shift register unit group, are insulated from each other; in the first direction, second connection lines electrically connected to each shift register unit in the i-th shift register unit group overlaps at least two of second connection lines electrically connected to each shift register unit in a j-th shift register unit group, wherein i and j are both positive integers and i≠j; and the first direction intersects a row direction of the plurality of display units.

6. The display panel according to claim 1 , wherein in a same shift register unit group, the scan signal enable level output from each shift register unit is sequentially shifted; and
in the same shift register unit group, a start time of the enable level of a scan signal output from the first shift register unit is before a start time of the enable level of a scan signal output from other shift register units of the at least two shift register units, and a start time of the enable level of a scan signal output from the second shift register unit is after a start time of the scan signal enable level output from other shift register units of the at least two shift register units.

7. The display panel according to claim 6 , wherein the plurality of connection lines comprise first connection lines, second connection lines, third connection lines, and fourth connection lines;
in the same shift register unit group, the signal input terminal of each of the at least two shift register units is electrically connected to a same first connection line, and the reset control terminal of each of the at least two shift register units is electrically connected to a same second connection line; and
the signal output terminal of the first shift register unit in the (i+1)-th shift register unit group is electrically connected to a first connection line electrically connected to each shift register unit in the (i+2)-th shift register unit group through a third connection line; and the signal output terminal of the second shift register unit in the (i+1)-th shift register unit group is electrically connected to second connection lines electrically connected to each shift register unit in the i-th shift register unit group through the fourth connection line,
wherein the first connection lines, the second connection lines, the third connection lines, and the fourth connection lines all extend in a first direction; the first connection line, the second connection line, the third connection line, and the fourth connection line electrically connected to each shift register unit in a same shift register unit group are arranged in a second direction and are insulated from each other; and the second direction intersects the first direction and is parallel to a row direction of the plurality of display units.

8. The display panel according to claim 7 , wherein in the first direction, a

Assignees

• Shanghai Avic Optoelectronics

Inventors

• Jin Huijun
• Wang Tinghai
• Qin Dandan

Classifications

• H10D86/441

  Interconnections, e.g. scanning lines · CPC title

• H10D86/60

  wherein the TFTs are in active matrices · CPC title

• 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

• G11C19/28 Primary

  using semiconductor elements (G11C19/14, G11C19/36 take precedence) · CPC title

• G09G2310/0202

  Addressing of scan or signal lines · CPC title