Touch detection method and device thereof
A detection method and detection device technology, which are applied in the fields of instruments, electrical digital data processing, and data processing input/output processes, etc., can solve the problem that the horizontal blank time is not long enough to complete touch detection, and the timing of touch detection is limited. limit and other issues
Active Publication Date: 2017-08-04
ILI TECHNOLOGY CORPORATION
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[0004] Compared with the vertical blanking time, because the horizontal blanking time is not long enough to complete the complete touch detection, it is known that the horizontal blanking time is not used for touch detection, and although the vertical blanking time is enough to complete the complete touch detection, However, since there is only a period of vertical blank time after one screen is updated and before the next screen starts to be updated, only this time can be used for the touch detection circuit to capture data, calculate and transmit touch point information, so that The number of times of touch detection and the timing of touch detection are randomly limited. For example, within a frame display time (frame time), the known technology can only perform one touch detection after the frame update is completed.
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[0038] The technical terms in this specification refer to the customary terms in this technical field. If some terms are explained or defined in this specification, the interpretation of these terms shall be based on the description or definition in this specification. In addition, on the premise that implementation is possible, the meaning of the relative relationship between objects or events described in this specification may include direct or indirect relationship. The so-called "indirect" refers to the existence of intermediate objects or physical spaces between objects. Or refers to the existence of intermediate events or time intervals between events. Furthermore, the following content is related to a display method and its device, and the common technologies or principles in this field will not be described in detail if they do not involve the technical features of the present invention. In addition, the shapes, sizes, proportions, and steps of the processes in the il...
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The invention provides a touch detection method and a device thereof, and the method and the device are used for detecting a touch point on a display. The method comprises the following steps: providing a display signal to cause the display to have at least two periods of discontinuous vertical blanking time within each period of frame time according to the display signal; and respectively executing touch detection within the two periods of discontinuous vertical blanking time. According to the touch detection method provided by the invention, multi-time touch detection can be carried out in one period of frame time.
Description
technical field [0001] The present invention relates to a touch detection method and its device, in particular to a touch detection method and its device which can be used in the blank time when a display is displayed. Background technique [0002] The display of the liquid crystal panel usually uses a timing controller (timing controller, TCON) to generate a timing signal to control the gate driver and the source driver to drive the picture to complete the display of the whole picture. The source drive circuit is mainly responsible for providing the data to be displayed by each pixel (pixel), that is, providing voltage signals corresponding to different gray levels, and the gate drive circuit controls multiple pixels in the same column to receive the source drive circuit at the same time. information provided. In detail, the timing controller controls the source drive circuit to sequentially convert the data to be displayed by the pixels in the first column, the second col...
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IPC IPC(8): G06F3/041
Inventor 洪国强潘宣亦温照成林显耿廖国超
Owner ILI TECHNOLOGY CORPORATION