Granted Patent B2

US 12,498,564 · App. 17/768,759 · Granted Dec 16, 2025

Inventors: Kexin Hao (Beijing, CN); Xin Duan (Beijing, CN); Shuhuan Yu (Beijing, CN); Bin Wang (Beijing, CN); Shaoru Zhang (Beijing, CN); Zhaoyun Gu (Beijing, CN); Jiaqi Fan (Beijing, CN)

Assignees: Beijing BOE Optoelectronics Technology Co., Ltd.; Beijing BOE Technology Development Co., Ltd.

G02B27/0093G09G3/2096G09G3/3208G09G2310/0243

Abstract

Claims (48)

1 . A control method for a display panel, comprising:

obtaining spatial position coordinates of a pupil of a user;

determining coordinates of a gaze point in a display area of a display panel viewed by the user according to the spatial position coordinates of the pupil;

determining an area range that the pupil of the user is gazing in the display area according to the spatial position coordinates of the pupil, the coordinates of the gaze point and a preset visual angle;

determining a gaze area and a non-gaze area in the display area according to the area range, wherein the gaze area is adjacent to the non-gaze area, wherein the display area comprises a plurality of sub-display areas, and each sub-display area of the plurality of sub-display areas comprises a plurality of rows of sub-pixels, and the determining of the gaze area and the non-gaze area according to the area range comprises: obtaining a sub-display area at least partially overlapping with the area range from the plurality of sub-display areas, using the sub-display area at least partially overlapping with the area range as the gaze area, and using a remaining sub-display area in the plurality of sub-display areas except for the sub-display area serving as the gaze area as the non-gaze area; and

adjusting a first gate driving signal input to the gaze area and a second gate driving signal input to the non-gaze area, so that a frequency of the first gate driving signal is less than a frequency of the second gate driving signal.

2 . The control method according to claim 1 , wherein:

the non-gaze area comprises a transition area adjacent to the gaze area and a distal area on a side of the transition area away from the gaze area;

the second gate driving signal comprises a transition area gate driving signal input to the transition area and a distal area gate driving signal input to the distal area;

wherein the adjusting of the second gate driving signal comprises: adjusting the transition area gate driving signal and the distal area gate driving signal, so that a duty cycle of the transition area gate driving signal is greater than a duty cycle of the distal area gate driving signal, or a voltage of the transition area gate driving signal is greater than a voltage of the distal area gate driving signal, or a frequency of the transition area gate driving signal is less than a frequency of the distal area gate driving signal.

3 . The control method according to claim 2 , wherein:

the transition area comprises a plurality of sub-transition areas arranged along a direction from the gaze area to the distal area;

the transition area gate driving signal comprises a plurality of sub-transition area gate driving signals input to the plurality of sub-transition areas, the plurality of sub-transition area gate driving signals being in one-to-one correspondence with the plurality of sub-transition areas;

wherein the adjusting of the transition area gate driving signal comprises: adjusting the plurality of sub-transition area gate driving signals input to the plurality of sub-transition areas, so that the closer a sub-transition area is to the gaze area, the greater a duty ratio or a voltage of a sub-transition area gate driving signal input to the sub-transition area, or the less a frequency of the sub-transition area gate driving signal input to the sub-transition area.

4 . The control method according to claim 1 , wherein the display panel comprises a plurality of gate driving circuits; and

the adjusting of the first gate driving signal and the second gate driving signal comprises:

outputting a first control signal to a portion of gate driving circuits corresponding to the gaze area in the plurality of gate driving circuits to cause the portion of the gate driving circuits to output the first gate driving signal, and outputting a second control signal to another portion of gate driving circuits corresponding to the non-gaze area in the plurality of gate driving circuits to cause the another portion of the gate driving circuits to output the second gate driving signal.

5 . The control method according to claim 4 , wherein:

the plurality of gate driving circuits comprise a plurality of groups of gate driving circuits connected to the plurality of sub-display areas in a one-to-one correspondence, each group of the plurality of groups of gate driving circuits being configured to independently receive the first control signal or the second control signal; and

the outputting of the first control signal or the outputting of the second control signal comprises:

for any one sub-display area of the plurality of sub-display areas, outputting the first control signal to a group of gate driving circuits corresponding to the any one sub-display area in a case where the any one sub-display area is determined to belong to the gaze area, and outputting the second control signal to a group of gate driving circuits corresponding to the any one sub-display area in a case where the any one sub-display area is determined to belong to the non-gaze area.

6 . The control method according to claim 1 , wherein the determining of the area range that the pupil of the user is gazing in the display area comprises:

calculating a distance between the pupil and the gaze point according to the spatial position coordinates of the pupil and the coordinates of the gaze point; and

determining the area range that the pupil of the user is gazing in the display area according to the distance and the preset visual angle.

7 . The control method according to claim 1 , wherein the obtaining of the spatial position coordinates of the pupil comprises:

obtaining a face image captured by a camera;

performing facial feature point detection on the face image to obtain a human eye region;

performing pupil detection on the human eye region to obtain center position coordinates of the pupil;

obtaining a face posture through calculation according to the face image; and

obtaining the spatial position coordinates of the pupil through calculation according to the face posture and the center position coordinates of the pupil.

8 . A control device for a display panel, comprising:

a memory; and

a processor coupled to the memory, the processor configured to, based on instructions stored in the memory, carry out the method according to claim 1 .

9 . A field programmable gate array (FPGA), comprising:

the control device according to claim 8 .

10 . The FPGA according to claim 9 , further comprising:

a display interface circuit configured to parse received image information; and

a data mapping circuit electrically connected to the display interface circuit and configured to map parsed image information into display data and input the display data to a display panel.

11 . The FPGA according to claim 10 , further comprising:

a mode setting circuit configured to set a display mode and transmit the display mode to the data mapping circuit and the control device;

wherein the data mapping circuit is configured to map the parsed image information into corresponding display data according to the display mode; and

the control device is configured to output a first control signal corresponding to the gaze area and a second control signal corresponding to the non-gaze area according to the display mode.

12 . A display device, comprising: a control device according to claim 8 .

13 . A non-transitory computer readable storage medium on which computer program instructions are stored, which when executed by a processor implement the method according to claim 1 .

14 . A control device for a display panel, comprising:

a coordinate obtaining circuit configured to obtain spatial position coordinates of a pupil of a user, and determine coordinates of a gaze point in a display area of a display panel viewed by the user according to the spatial position coordinates of the pupil;

an area determination circuit configured to determine an area range that the pupil of the user is gazing in the display area according to the spatial position coordinates of the pupil, the coordinates of the gaze point and a preset visual angle, and determine a gaze area and a non-gaze area in the display area according to the area range, wherein the gaze area is adjacent to the non-gaze area, wherein the display area comprises a plurality of sub-display areas, and each sub-display area of the plurality of sub-display areas comprises a plurality of rows of sub-pixels, and the area determination circuit is configured to obtain a sub-display area at least partially overlapping with the area range from the plurality of sub-display areas, use the sub-display area at least partially overlapping with the area range as the gaze area, and use a remaining sub-display area in the plurality of sub-display areas except for the sub-display area serving as the gaze area as the non-gaze area; and

a signal adjustment circuit configured to adjust a first gate driving signal input to the gaze area and a second gate driving signal input to the non-gaze area, so that a frequency of the first gate driving signal is less than a frequency of the second gate driving signal.

Assignments (2)

Continuity (1)

References Cited (31)