Display panel, display device and detection method for display panel
A display panel and detection method technology, applied in the direction of measuring device, measuring circuit, short-circuit test, etc., can solve the problems of false detection, failure to confirm the cause of abnormality, and inability to distinguish the internal circuit connection of the pressure sensing unit, so as to reduce the number and realize The effect of narrow bezel design
Active Publication Date: 2021-03-16
XIAMEN TIANMA MICRO ELECTRONICS
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Problems solved by technology
During the production process of the display panel, it is necessary to detect the pressure touch function and detect whether the pressure touch circuit is abnormal. The current detection method is to connect the first input end of each pressure sensing unit to the first test terminal (test pad ), connect the second input end of each pressure sensing unit to the second test terminal, and then directly detect the overall circuit impedance between the first test terminal and the second test terminal. However, this detection method cannot distinguish The connection of the internal circuit of the pressure sensing unit has various problems such as missed detection, wrong detection, inability to accurately locate the abnormal position, and inability to confirm the cause of the abnormality.
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[0033] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, only some structures related to the present invention are shown in the drawings but not all structures.
[0034] see figure 1 , figure 1 It is a schematic structural diagram of a display panel provided by an embodiment of the present invention, and the display panel includes:
[0035] n pressure sensing units 10, n first switch units 11 and n second switch units 12, wherein n is an integer greater than 1;
[0036] The first test terminal 21, the second test terminal 22, the third test terminal 23 and the fourth test terminal 24;
[0037] The first end A1 of the i-th pressure sensing unit 10 is electrically connecte...
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An embodiment of the invention discloses a display panel, a display apparatus and a detection method of the display panel. The display panel comprises n pressure sensing units, first switch units, second switch units and third switch units. A first end of an ith pressure sensing unit is electrically connected to a first end of an ith first switch unit. A second end of the ith pressure sensing unitis electrically connected to a second end of an ith second switch unit. A third end of each pressure sensing unit is electrically connected to a third test terminal. A fourth end of each pressure sensing unit is electrically connected to a fourth test terminal. A second end of each first switch unit is electrically connected to a first test terminal. A first end of each second switch unit is electrically connected to a second test terminal. A control end of the ith first switch unit and a control end of the ith second switch unit are electrically connected to a trigger signal output end of asame grade of scanning unit. In the technical scheme, a position of the abnormal pressure sensing unit can be accurately positioned.
Description
technical field [0001] Embodiments of the present invention relate to display technologies, and in particular, to a display panel, a display device, and a detection method for a display panel. Background technique [0002] At present, as an information input tool, a display panel with a touch function is widely used in various display products such as mobile phones, tablet computers, and information inquiry machines in halls of public places. [0003] In order to better meet user needs, the touch display panel is usually provided with a pressure sensing unit for detecting the magnitude of the touch pressure when the user touches the touch display panel, so that the display panel can not only collect touch position information, but also collect touch information. Control the size of the force to enrich the application range of touch display technology. The provided pressure sensing unit is generally formed by a bridge. During the production process of the display panel, it ...
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IPC IPC(8): G01R31/52G01R31/54G01R31/28G06F3/041
CPCG01R31/282G06F3/0414G01R31/50
Inventor 邹宗骏孙莹许育民
Owner XIAMEN TIANMA MICRO ELECTRONICS