CN-122024623-A - Display device and driving method thereof

CN122024623ACN 122024623 ACN122024623 ACN 122024623ACN-122024623-A

Abstract

The application provides a display device and a driving method thereof. The display device comprises a display panel, a time schedule controller and a source electrode driving chip, wherein the display panel comprises a display area and a non-display area, the display area is divided into a second sub-display area, a first sub-display area, a fourth sub-display area and a third sub-display area along the row direction, the non-display area is provided with a first grid electrode driving circuit to a fourth grid electrode driving circuit, and the four grid electrode driving circuits respectively drive the four sub-display areas. Each gate driving circuit comprises an N-level gate driving unit, the gate driving unit comprises a first control signal input end and a second control signal input end, and the gate driving units are controlled to output gate driving signals with different levels in driving periods of different frames of pictures, so that a sub-display area is divided into at least two areas with different refresh rates along the column direction. The application realizes the partition driving of the display panel in the row direction and the column direction, and reduces the power consumption of the display panel.

Inventors

LI HAO
ZHOU JI
DAI CHEN

Assignees

广州华星光电半导体显示技术有限公司

Dates

Publication Date: 20260512
Application Date: 20260330
Priority Date: 20260121

Claims (10)

1. The display device is characterized by comprising a display panel, a time sequence controller and a source electrode driving chip, wherein the display panel comprises a display area and a non-display area, the display area is provided with a plurality of pixel units which are arranged in an array, the display area is divided into a second sub-display area, a first sub-display area, a fourth sub-display area and a third sub-display area along the row direction, the non-display area is provided with a first grid driving circuit, a second grid driving circuit, a third grid driving circuit and a fourth grid driving circuit, and each of the first grid driving circuit, the second grid driving circuit, the third grid driving circuit and the fourth grid driving circuit comprises N levels of grid driving units, and N is a positive integer greater than 1; The gate driving signal output end of the ith gate driving unit in the first gate driving circuit is connected with the gate line of the ith row in the first sub-display area, the gate driving signal output end of the ith gate driving unit in the second gate driving circuit is connected with the gate line of the ith row in the second sub-display area, the gate driving signal output end of the ith gate driving unit in the third gate driving circuit is connected with the gate line of the ith row in the third sub-display area, the gate driving signal output end of the ith gate driving unit in the fourth gate driving circuit is connected with the gate line of the ith row in the fourth sub-display area, and i is a positive integer less than or equal to N; At least one of the first, second, third, and fourth sub-display regions is divided into at least two regions along a column direction, and refresh rates of at least two of the at least two regions are different.
2. The display device according to claim 1, wherein the display panel further includes a first control signal line, a second control signal line, a third control signal line, and a fourth control signal line, the first control signal line, the second control signal line, the third control signal line, and the fourth control signal line are electrically connected to the timing controller, the i-th stage gate driving unit includes a first control signal input terminal and a second control signal input terminal, a first control signal input terminal of an i-th stage gate driving unit in the first gate driving circuit and a first control signal input terminal of an i-th stage gate driving unit in the second gate driving circuit are each connected to the first control signal line, a second control signal input terminal of an i-th stage gate driving unit in the first gate driving circuit and a second control signal input terminal of an i-th stage gate driving unit in the second gate driving circuit are each connected to the second control signal line, and a second control signal input terminal of an i-th stage gate driving unit in the third gate driving circuit are each connected to the second control signal input terminal of the i-th stage gate driving unit in the third gate driving circuit.
3. The display device according to claim 2, wherein the first sub-display region is divided into a first region and a second region in a column direction, a1 st to j-1 st stage gate driving units in the first gate driving circuit are gate driving units corresponding to the first region, a j-th stage gate driving unit in the first gate driving circuit is a gate driving unit corresponding to the second region, j is a positive integer greater than 1 and less than or equal to N; The 1 st stage gate driving unit to the j-1 st stage gate driving unit in the first gate driving circuit are configured to receive a first control signal and a second control signal in a driving period of a first frame picture, output a first level gate driving signal, receive the first control signal and the second control signal in a driving period of a second frame picture, and output a second level gate driving signal; The j-th stage gate driving unit to the N-th stage gate driving unit in the first gate driving circuit are configured to receive a first control signal and a second control signal in a driving period of the first frame picture, output the second level gate driving signal, receive the first control signal and the second control signal in the driving period of the second frame picture, and output the second level gate driving signal; The first level is different from the second level.
4. A display device as claimed in claim 3, characterized in that the ratio of the refresh rate of the first area to the refresh rate of the second area is 1:n, n being a positive integer greater than 1.
5. The display device according to claim 2, wherein the first sub-display region is divided into a first region, a second region, and a third region in a column direction, a1 st to j-1 st stage gate driving units in the first gate driving circuit are gate driving units corresponding to the first region, a j-1 st stage gate driving unit in the first gate driving circuit is a gate driving unit corresponding to the second region, a k-th stage gate driving unit in the first gate driving circuit is a gate driving unit corresponding to the third region, j is a positive integer greater than 1 and less than N, and k is a positive integer greater than j and less than or equal to N; the 1 st stage gate driving unit to the j-1 st stage gate driving unit in the first gate driving circuit are configured to output a gate driving signal of a first level in a driving period of a first frame picture and output a gate driving signal of a second level in a driving period of a second frame picture; The j-th stage gate driving unit to the k-1-th stage gate driving unit in the first gate driving circuit are configured to output the gate driving signal of the second level in a driving period of the first frame picture, and to output the gate driving signal of the second level in the driving period of the second frame picture; The kth stage gate driving unit to the nth stage gate driving unit in the first gate driving circuit are configured to output the gate driving signal of the first level in a driving period of the first frame picture, and output the gate driving signal of the second level in a driving period of the second frame picture; The first level is different from the second level.
6. The display device of claim 5, wherein a ratio of a refresh rate of the first region to a refresh rate of the second region is 1:n, wherein a ratio of a refresh rate of the third region to a refresh rate of the second region is 1:n, and wherein n is a positive integer greater than 1.
7. The display device according to claim 1, wherein the first gate driving circuit and the second gate driving circuit are located at one side of the display region, the third gate driving circuit and the fourth gate driving circuit are located at the other side of the display region, the first gate driving circuit is located at one side of the second gate driving circuit away from the display region, and the fourth gate driving circuit is located at one side of the third gate driving circuit away from the display region; The display panel further comprises a first bus group and a second bus group, wherein the first bus group is arranged between the first grid driving circuit and the second grid driving circuit, and the second bus group is arranged between the third grid driving circuit and the fourth grid driving circuit.
8. The driving method of the display device is characterized in that the display device comprises a display panel, a time schedule controller and a source electrode driving chip, the display panel comprises a display area and a non-display area, the display area is provided with a plurality of pixel units which are arranged in an array, the display area is divided into a second sub-display area, a first sub-display area, a fourth sub-display area and a third sub-display area along a row direction, the non-display area is provided with a first grid electrode driving circuit, a second grid electrode driving circuit, a third grid electrode driving circuit and a fourth grid electrode driving circuit, each of the first grid electrode driving circuit, the second grid electrode driving circuit, the third grid electrode driving circuit and the fourth grid electrode driving circuit comprises an N-level grid electrode driving unit, N is a positive integer which is larger than 1, the ith grid electrode driving unit comprises a first control signal input end, a second control signal input end and a grid electrode driving signal output end, and i is a positive integer which is smaller than or equal to N; the driving method includes: Driving an mth gate driving circuit, wherein the mth gate driving circuit is one of the first gate driving circuit, the second gate driving circuit, the third gate driving circuit and the fourth gate driving circuit, a display area corresponding to the mth gate driving circuit is divided into a first area and a second area along a column direction, 1 st-1 st gate driving units in the mth gate driving circuit are gate driving units corresponding to the first area, j th gate driving units in the mth gate driving circuit are gate driving units corresponding to the second area, j is a positive integer which is more than 1 and less than or equal to N, and m is 1, 2, 3 or 4; In the driving period of the P frame picture, the second control signal input ends of the 1 st stage gate driving units to the j-1 st stage gate driving units in the m gate driving circuits receive a second control signal of a first level, the first control signal input ends of the 1 st stage gate driving units to the j-1 st stage gate driving units in the m gate driving circuits receive a first control signal of a second level, and the 1 st stage gate driving units to the j-1 st stage gate driving units in the m gate driving circuits sequentially output the gate driving signals of the first level through the gate driving signal output ends; In the driving period of the P-th frame picture, the second control signal input end from the jth gate driving unit to the nth gate driving unit in the mth gate driving circuit receives the second control signal of the first level, the first control signal input end from the jth gate driving unit to the nth gate driving unit in the mth gate driving circuit receives the first control signal of the second level, and the jth gate driving unit to the nth gate driving unit in the mth gate driving circuit sequentially outputs the gate driving signals of the second level through the gate driving signal output end; in the driving period of the P+1st frame picture, the 1 st stage gate driving unit to the j-1 st stage gate driving unit in the m gate driving circuit sequentially output the gate driving signals of the second level through the gate driving signal output end; In the driving period of the P+1st frame picture, the jth stage gate driving unit to the nth stage gate driving unit in the mth gate driving circuit sequentially output the gate driving signals of the second level through the gate driving signal output end; the first level is different from the second level, and P is a positive integer.
9. The driving method according to claim 8, wherein a display region corresponding to the mth gate driving circuit is divided into a first region, a second region, and a third region in a column direction, the 1 st to j-1 st gate driving units in the mth gate driving circuit are gate driving units corresponding to the first region, the j-1 th to k-1 th gate driving units in the mth gate driving circuit are gate driving units corresponding to the second region, the k-th to N-th gate driving units in the mth gate driving circuit are gate driving units corresponding to the third region, and k is a positive integer greater than j and less than or equal to N; in the driving period of the P frame picture, the 1 st stage gate driving unit to the j-1 st stage gate driving unit in the m gate driving circuit sequentially output the gate driving signals of the first level through the gate driving signal output end; in the driving period of the P frame picture, the jth stage gate driving unit to the kth-1 stage gate driving unit in the mth gate driving circuit sequentially output the gate driving signals of the second level through the gate driving signal output end; In the driving period of the P-th frame picture, sequentially outputting the gate driving signals of the first level from the kth stage gate driving unit to the nth stage gate driving unit in the mth gate driving circuit through the gate driving signal output end; in the driving period of the P+1st frame picture, the 1 st stage gate driving unit to the j-1 st stage gate driving unit in the m gate driving circuit sequentially output the gate driving signals of the second level through the gate driving signal output end; In the driving period of the P+1st frame picture, the jth stage gate driving unit to the kth-1 st stage gate driving unit in the mth gate driving circuit sequentially output the gate driving signals of the second level through the gate driving signal output end; and in the driving period of the P+1st frame picture, sequentially outputting the second level gate driving signals through the gate driving signal output ends by the kth stage gate driving unit to the nth stage gate driving unit in the mth gate driving circuit.
10. The driving method according to claim 8, wherein the display panel further includes a first control signal line, a second control signal line, a third control signal line, and a fourth control signal line, the first control signal line, the second control signal line, the third control signal line, and the fourth control signal line being electrically connected to the timing controller; When m is 1 or 2, a first control signal input end of an ith stage of gate driving unit in the mth gate driving circuit is connected with the first control signal line, and a second control signal input end of the ith stage of gate driving unit in the mth gate driving circuit is connected with the second control signal line; When m is 3 or 4, the first control signal input end of the ith stage of gate driving unit in the mth gate driving circuit is connected with the third control signal line, and the second control signal input end of the ith stage of gate driving unit in the mth gate driving circuit is connected with the fourth control signal line.

Description

Display device and driving method thereof The present application claims priority from chinese patent application No. 202610091515.X filed on 21, 01, 2026, which is incorporated herein by reference. Technical Field The application relates to the technical field of display, in particular to a display device and a driving method thereof. Background In the field of display technology, a display panel generally includes a display area provided with a plurality of pixel units arranged in an array, and a non-display area provided with a gate driving circuit. The grid driving circuit is used for providing grid scanning signals for the pixel units of the display area so as to control the on and off of the pixel units, and therefore image display is achieved. Conventional display panels generally employ a layout of a single-sided or double-sided gate driving circuit. In the layout mode of the single-side gate driving circuit, the gate driving circuit is arranged on one side of the display area, and the gate lines extend from one side of the display area to the other side, so that the gate lines are longer, the signal transmission delay is larger, and the display quality is affected. In the layout mode of the double-sided gate driving circuit, the gate driving circuits are respectively disposed at two sides of the display area, and although the length of the gate lines is shortened, the entire display area is generally controlled by the same gate driving circuit, and the partition driving of the display area in the row direction cannot be realized. In practice, different areas of the display panel often display different content, for example, a center area of the display panel may display dynamic video content, while an edge area may display static text or icons. For static content, frequent refreshing is not required, but conventional display panels typically drive the entire display area with a uniform refresh rate, which results in regions displaying static content also being refreshed at a higher refresh rate, resulting in unnecessary power consumption. In addition, although the conventional display panel can realize the partition driving in the column direction by controlling the gate driving circuit, that is, the refresh rate control of the pixel units of different rows by controlling the outputs of the gate driving units of different stages of the gate driving circuit, the partition driving in the row direction and the column direction cannot be simultaneously realized. This makes it impossible for the display panel to flexibly adjust the refresh rate for display contents of different positions, resulting in higher power consumption of the display panel. Therefore, a new solution is needed to solve the above-mentioned problems. Disclosure of Invention The application aims to provide a display device and a driving method thereof, which aim to realize partition driving of a display panel in a row direction and a column direction. The application provides a display device, which comprises a display panel, a time schedule controller and a source electrode driving chip, wherein the display panel comprises a display area and a non-display area, the display area is provided with a plurality of pixel units which are arranged in an array, the display area is divided into a second sub-display area, a first sub-display area, a fourth sub-display area and a third sub-display area along the row direction, the non-display area is provided with a first grid driving circuit, a second grid driving circuit, a third grid driving circuit and a fourth grid driving circuit, and each of the first grid driving circuit, the second grid driving circuit, the third grid driving circuit and the fourth grid driving circuit comprises N levels of grid driving units, and N is a positive integer greater than 1; the gate driving signal output end of the ith gate driving unit in the first gate driving circuit is connected with the gate line of the ith row in the first sub-display area, the gate driving signal output end of the ith gate driving unit in the second gate driving circuit is connected with the gate line of the ith row in the second sub-display area, the gate driving signal output end of the ith gate driving unit in the third gate driving circuit is connected with the gate line of the ith row in the third sub-display area, the gate driving signal output end of the ith gate driving unit in the fourth gate driving circuit is connected with the gate line of the ith row in the fourth sub-display area, i is a positive integer less than or equal to N, at least one of the first sub-display area, the second sub-display area, the third sub-display area and the fourth sub-display area is divided into at least two areas along the column direction, the refresh rates of at least two of the at least two regions are different. In the display device, the display panel further includes a first control signal line, a second control signal line, a third