Detection circuit and detection method of touch display panel, touch display panel
A touch display panel and detection circuit technology, applied in the direction of electrical digital data processing, input/output process of data processing, instruments, etc., can solve problems such as uneven picture quality, problems, etc., to reduce the number of detection terminals and improve screen display Uniform, achieve consistent results
Active Publication Date: 2018-07-13
XIAMEN TIANMA MICRO ELECTRONICS +1
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Problems solved by technology
[0005] In the above touch circuit, it is necessary to add two additional detection terminals, that is, the COMSW switch terminal and a common terminal to achieve detection, and the increase in the number of terminals will have a negative impact on the width of the display frame and the wiring.
Moreover, when displaying, due to the simultaneous supply of two common voltages, there may be picture quality problems due to uneven common voltages
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[0041] Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the concept of example embodiments to those skilled in the art. The drawings are merely schematic illustrations of the invention and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus repeated descriptions thereof will be omitted.
[0042] Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided in order to give a thorough understanding of embodiments of the invention. However, those skilled in the art will appre...
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The present application relates to a detection circuit and a detection method for a touch control display panel and the touch control display panel. The detection circuit adopts the structure that a gate electrode of a first transistor and a gate electrode of a second transistor are electrically connected with a data switch terminal; the first transistor is electrically connected between a first data terminal and a first data line group node; the second transistor is electrically connected between a second data terminal and a second data line group node; a gate electrode of a third transistor and a gate electrode of a fourth transistor are electrically connected with a public switch terminal; a drain electrode of the third transistor is electrically connected with the second data terminal; a source electrode of the third transistor and a drain electrode of the fourth transistor are electrically connected with a first public electrode block group node; and a source electrode of the fourth transistor and a public terminal are electrically connected with a second public electrode block group node. According to the detection circuit and the detection method for the touch control display panel and the touch control display panel, which are disclosed by the present application, the number of detection terminals can be reduced; and the detection circuit and the detection method for the touch control display panel and the touch control display panel are beneficial to side narrowing of a border and routing design.
Description
technical field [0001] The present invention generally relates to the field of display technology, and specifically relates to a detection circuit and detection method of a touch display panel, and a touch display panel. Background technique [0002] In recent years, the rapid development of the information and communication field has increased the demand for various types of display devices. At present, touch display devices are becoming more and more popular, and touch display devices generally include touch display panels. However, in the actual production of touch display panels, it is found that it is difficult to detect the disconnection and / or short circuit of the touch leads on the touch display panel. question. [0003] Such as Figures 1A-1C As shown, it is a touch detection method in the prior art. refer to Figure 1A , the common electrode layer has a plurality of common electrode blocks, and the plurality of common electrode blocks are also used for touch sen...
Claims
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IPC IPC(8): G06F3/041
CPCG06F3/0416
Inventor 苏凌志王慧敏
Owner XIAMEN TIANMA MICRO ELECTRONICS