CN-121996099-A - Uplink signal transmission method of touch screen and touch input device

CN121996099ACN 121996099 ACN121996099 ACN 121996099ACN-121996099-A

Abstract

The application discloses an uplink signal transmission method and touch input equipment of a touch screen, wherein the touch screen comprises a plurality of first sensing electrodes and a plurality of second sensing electrodes orthogonal to the first sensing electrodes, the first sensing electrodes and the second sensing electrodes are used for transmitting touch signals and acquiring detection signals, the uplink signal transmission method comprises the steps of acquiring a target area touched by an active pen on the touch screen when the hand and the active pen are determined to touch the touch screen at the same time according to the detection signals in a touch detection time period of a current period, and controlling the sensing electrodes of the target area to transmit uplink signals in a signal transmission time period of the current period so that the active pen receives the uplink signals. The application can prevent the uplink signal from distortion caused by ground attenuation, thereby improving the accuracy of the touch screen to the position detection of the active pen.

Inventors

WU JIEYING
LIN ZONGWEI

Assignees

深圳天德钰科技股份有限公司

Dates

Publication Date: 20260508
Application Date: 20251223

Claims (10)

1. The uplink signal transmission method of the touch screen is characterized in that the touch screen comprises a plurality of first sensing electrodes and a plurality of second sensing electrodes orthogonal to the first sensing electrodes, and the first sensing electrodes and the second sensing electrodes are used for transmitting touch signals and acquiring detection signals; The uplink signal transmission method comprises the following steps: In a touch detection time period of the current period, when the hand and the active pen are determined to touch the touch screen at the same time according to the detection signal, a target area touched by the active pen on the touch screen is obtained; And in the signal transmission time period of the current period, controlling the sensing electrode of the target area to transmit an uplink signal so that the active pen receives the uplink signal.
2. The uplink signal transmission method of claim 1, further comprising: And in the touch detection time period of the current period, determining the whole area of the touch screen as the target area when determining that only the active pen touches the touch screen according to the detection signal.
3. The uplink signal transmission method according to claim 1, wherein the controlling the sensing electrode of the target area to transmit the uplink signal includes: controlling the first sensing electrode in the target area to transmit the uplink signal, and/or And controlling a second sensing electrode in the target area to transmit the uplink signal.
4. The uplink signal transmission method of claim 2, wherein when the target area is the area touched by the active pen, the uplink signal is a first voltage amplitude; when the target area is the full area, the uplink signal is of a second voltage amplitude value; The first voltage magnitude is less than the second voltage magnitude.
5. The uplink signal transmission method according to claim 1, wherein the first sensing electrode is a transmitting electrode and the second sensing electrode is a receiving electrode; The sensing electrode for controlling the target area transmits an uplink signal, including: Determining the touch position of the active pen according to the detection signal; acquiring a target transmitting electrode corresponding to the touch position in the target area; And controlling the target transmitting electrode to transmit the uplink signal.
6. The uplink signal transmission method of claim 5, wherein the sensing electrode controlling the target area transmits an uplink signal, further comprising: acquiring a target receiving electrode corresponding to the touch position in the target area; And controlling the target receiving electrode to transmit the uplink signal.
7. The touch input device is characterized by comprising a touch screen and a touch chip, wherein the touch screen comprises a plurality of first sensing electrodes and a plurality of second sensing electrodes orthogonal to the first sensing electrodes, and the first sensing electrodes and the second sensing electrodes are used for transmitting touch signals and acquiring detection signals; The touch chip is used for: In a touch detection time period of the current period, when the hand and the active pen are determined to touch the touch screen at the same time according to the detection signal, a target area touched by the active pen on the touch screen is obtained; And in the signal transmission time period of the current period, controlling the sensing electrode of the target area to transmit an uplink signal so that the active pen receives the uplink signal.
8. The touch input device of claim 7, wherein the touch chip is further to: And in the touch detection time period of the current period, determining the whole area of the touch screen as the target area when determining that only the active pen touches the touch screen according to the detection signal.
9. The touch input device of claim 8, wherein the up signal is a first voltage magnitude when the target area is the area touched by the active pen; when the target area is the full area, the uplink signal is of a second voltage amplitude value; The first voltage magnitude is less than the second voltage magnitude.
10. The touch input device of claim 8, wherein the first sensing electrode is a transmitting electrode and the second sensing electrode is a receiving electrode; the touch chip is further configured to: Determining the touch position of the active pen according to the detection signal; acquiring a target transmitting electrode corresponding to the touch position in the target area; And controlling the target transmitting electrode to transmit the uplink signal.

Description

Uplink signal transmission method of touch screen and touch input device Technical Field The application relates to the technical field of touch control, in particular to an uplink signal transmission method of a touch screen and touch input equipment. Background Currently, a touch system comprises a touch screen and an active pen, and when the active pen is used for performing touch operation, the touch screen completes interaction between the touch screen and the active pen by detecting the touch position of the active pen. The touch screen interacts by transmitting an uplink signal to the active pen. In the existing touch screen, the scene that the active pen and the hand touch simultaneously can be involved in the application process, for example, interaction is completed by simultaneously touching the touch screen through the active pen and the finger, or the user touches the touch screen when holding the active pen. In a scene that the active pen and the finger touch at the same time, the hand touch can cause uplink signal transmission distortion, so that the accuracy of the touch screen on the position detection of the active pen is reduced. Disclosure of Invention In view of the above, the present application provides an uplink signal transmission method of a touch screen and a touch input device, which are used for improving the accuracy of the touch screen for detecting the position of an active pen. The technical scheme of the application is as follows: the first aspect of the application provides an uplink signal transmission method of a touch screen, the touch screen comprises a plurality of first sensing electrodes and a plurality of second sensing electrodes orthogonal to the first sensing electrodes, the first sensing electrodes and the second sensing electrodes are used for transmitting touch signals and acquiring detection signals, the uplink signal transmission method comprises the steps of acquiring a target area touched by an active pen on the touch screen when the hand and the active pen touch the touch screen according to the detection signals in a touch detection time period of a current period, and controlling the sensing electrodes of the target area to transmit uplink signals in the signal transmission time period of the current period so that the active pen receives the uplink signals. In an embodiment of the present application, the uplink signal transmission method further includes determining, in a touch detection time period of a current period, that a full area of the touch screen is the target area when only the active pen touches the touch screen according to the detection signal. In an embodiment of the application, the control of the sensing electrode of the target area to transmit the uplink signal comprises control of a first sensing electrode of the target area to transmit the uplink signal and/or control of a second sensing electrode of the target area to transmit the uplink signal. In an embodiment of the application, when the target area is the area touched by the active pen, the uplink signal is a first voltage amplitude, and when the target area is the full area, the uplink signal is a second voltage amplitude, and the first voltage amplitude is smaller than the second voltage amplitude. In an embodiment of the application, the first sensing electrode is a transmitting electrode, the second sensing electrode is a receiving electrode, and the controlling the sensing electrode of the target area to transmit the uplink signal includes determining a touch position of the active pen according to the detection signal, acquiring a target transmitting electrode corresponding to the touch position in the target area, and controlling the target transmitting electrode to transmit the uplink signal. In an embodiment of the application, the control of the sensing electrode of the target area to transmit the uplink signal further includes obtaining a target receiving electrode corresponding to the touch position in the target area, and controlling the target receiving electrode to transmit the uplink signal. The second aspect of the application provides a touch input device, which comprises a touch screen and a touch chip, wherein the touch screen comprises a plurality of first sensing electrodes and a plurality of second sensing electrodes orthogonal to the first sensing electrodes, the first sensing electrodes and the second sensing electrodes are used for transmitting touch signals and acquiring detection signals, the touch chip is connected with the first sensing electrodes and the second sensing electrodes, the touch chip is used for acquiring a target area touched by an active pen on the touch screen when the touch screen is touched by the hand and the active pen according to the detection signals in a touch detection time period of a current period, and controlling the sensing electrodes of the target area to transmit uplink signals in a signal transmission time period