US 12,067,165 B2
Haptic reproduction system and driving method
Yongchun Tao, Beijing (CN); Yuju Chen, Beijing (CN); Hui Hua, Beijing (CN); Xiaotong Liu, Beijing (CN); and Xiaofeng Yin, Beijing (CN)
Assigned to Beijing BOE Technology Development Co., Ltd., Beijing (CN); and BOE Technology Group Co., Ltd., Beijing (CN)
Appl. No. 17/620,590
Filed by Beijing BOE Technology Development Co., Ltd., Beijing (CN); and BOE Technology Group Co., Ltd., Beijing (CN)
PCT Filed Feb. 26, 2021, PCT No. PCT/CN2021/077999
§ 371(c)(1), (2) Date Dec. 17, 2021,
PCT Pub. No. WO2022/178792, PCT Pub. Date Sep. 1, 2022.
Prior Publication US 2023/0152893 A1, May 18, 2023
Int. Cl. G06F 3/01 (2006.01); B06B 1/02 (2006.01); B06B 1/06 (2006.01); G06F 3/041 (2006.01)
CPC G06F 3/016 (2013.01) [B06B 1/0215 (2013.01); B06B 1/0622 (2013.01); G06F 3/0416 (2013.01); G06F 3/0412 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A haptic reproduction system, comprising a touch display device, an upper computer and a waveform generator;
wherein the touch display device comprises a piezoelectric unit, a touch display panel and a touch driving unit, and the piezoelectric unit is disposed on the touch display panel;
the touch driving unit is electrically connected to the touch display panel and the upper computer, and is configured to acquire touch information and transmit the touch information to the upper computer;
the upper computer is electrically connected to the waveform generator, and is configured to send a first waveform generation instruction to the waveform generator according to the touch information;
the waveform generator is configured to generate a first waveform signal according to the first waveform generation instruction;
the piezoelectric unit is electrically connected to the waveform generator, and is configured to resonate with the touch display panel under the drive of the first waveform signal to change a friction on a touch surface of the touch display device;
the touch display panel comprises an active area, and the active area comprises at least one active sub-area;
the touch information comprises touch coordinates;
the upper computer is also configured to determine the active sub-area to which the touch coordinates belong, and send the first waveform generation instruction corresponding to the active sub-area, to which the touch coordinate belong, to the waveform generator;
the touch information further comprises a touch time;
the upper computer is further configured to determine whether the touch coordinates change within the touch time; the touch coordinates changing within the touch time indicates that a finger of a user is sliding; and if the touch coordinates do not change within the touch time, indicating that the finger of the user stops sliding, the upper computer stops sending the first waveform generation instruction corresponding to the active sub-area, to which the touch coordinate belong, to the waveform generator;
the touch display panel further comprises a touch base plate and a first display panel, the touch base plate is disposed on a light emitting side of the first display panel, and the piezoelectric unit is disposed on a side of the touch base plate;
the touch display device further comprises a fixing part; and the fixing part is configured to fix the touch base plate and reserve a gap between the touch base plate and the first display panel; and
the fixing part comprises a support part and a bonding part; wherein the support part is disposed on a side edge of the first display panel, the material of the support part comprises a sound absorption material, and the bonding part is disposed on a side, away from the first display panel, of the support part, and is bonded with the touch base plate.