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Touch panel, driving method for the touch panel, program for getting touch information, and memory media

A technology for a touch display device and a display device, applied to static indicators, data processing input/output processes, instruments, etc., capable of solving problems such as decreased sensitivity of touch information detection, prone to coupling noise, etc.

Active Publication Date: 2012-03-14
INNOLUX CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the structure of the above-mentioned in-cell touch display device is close to the thin film transistor (TFT, Thin Film Transistor) array substrate, so it is easily affected by the operation of the transistor, and coupling noise is likely to occur, so the detection of touch information will be relatively Sensitivity drop problem

Method used

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  • Touch panel, driving method for the touch panel, program for getting touch information, and memory media
  • Touch panel, driving method for the touch panel, program for getting touch information, and memory media
  • Touch panel, driving method for the touch panel, program for getting touch information, and memory media

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] figure 1 It is a cross-sectional structure diagram of an example of the touch display device 70 according to Embodiment 1 of the present invention. figure 1 Among them, the touch display device 70 of the first embodiment includes a touch sensor 10 , a touch sensor controller 20 , a color filter substrate 40 , a thin film transistor array substrate 50 , and a display device driving circuit 60 .

[0051] The touch sensor 10 and the touch sensor controller 20 constitute a touch sensor module, and the color filter substrate 40 , the thin film transistor array substrate 50 , and the display device driving circuit 60 constitute a display device. The touch sensor 10 is formed on the color filter substrate 40, and the color filter substrate 40 is assembled with the thin film transistor array substrate 50, the display device driving circuit 60 and the touch sensor controller 20 to form a An embedded touch display device 70 . The touch sensor 10 is composed of a transparent ele...

Embodiment 2

[0101] Figure 9 The touch sensor and the driving method of the touch sensor according to the second embodiment of the present invention are described. Figure 9 The same as that of Example 1 is shown in Figure 6 Timing flowcharts in the same format. Wherein, the same constituent elements in Embodiment 2 as those in Embodiment 1 will be marked with the same reference symbols, and descriptions will be omitted.

[0102] Figure 9 Among them, the frame period and driving timing of the display device are the same as Figure 6 same. In the second embodiment, the scan start timing of the touch sensor 10 is started synchronously with the frame period of the display device, which is the same as the first embodiment. In the second embodiment, the reading of touch information from the touch sensor 10 is performed twice in one frame period, which is different from the first embodiment. The reading cycle of the touch sensor 10 is generally shorter than 16.6 msec, and the reading sp...

Embodiment 3

[0108] Figure 10 It describes the touch sensor 10 and the driving method of the touch sensor 10 according to the third embodiment of the present invention. Figure 10 is shown in Example 1 with the Figure 6 with Example 2 Figure 9 Timing flowcharts in the same format.

[0109] In Example 2, reading is performed twice in one frame period, but Example 3 is different from Example 2 in that reading is performed three times in one frame period. At this time, the reading speed of the reading device 22 is set to be higher than 180 Hz. In this way, if Figure 10 As shown, three detected data can be obtained in one frame period.

[0110] The point that the noise cancellation calculation performed by the touch information calculation device 25 is performed in consecutive frame periods is the same as before, and as in the description of the second embodiment, for each of the three detected data, each The moving average between the detection data read out in the same detection se...

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Abstract

The purpose of the invention is to provide a touch panel and a driving method for the touch panel, capable of reducing the influence caused by the operation of a display device to the touch panel. The touch panel having a display driven by alternative voltage and a touch sensor reading the touch information from the input interface periodically, includes a touch information detection part synchronizing the beginning timing of a reading operation of the touch sensor with a frame of the display and detecting the touch data in each frame, and a touch information calculation part calculating an average with respect to an even number of successive frames to get a calculated touch data corresponding to a predetermined frame. The invention can be fully applied in a touch panel of which the input interface is used to display images and to receive touch inputs by fingers or etc.

Description

technical field [0001] The present invention relates to a touch display device, and in particular to a touch display device with an AC-driven display device and a touch sensor for periodically reading touch information from an input interface. Background technique [0002] In the past, in the capacitive touch display device, the sensor substrate dedicated to the touch sensor was not provided, but the touch sensor was directly formed on the color filter substrate of the liquid crystal display device, and then the touch sensor was used. The color filter substrate of the control sensor and the thin film transistor array substrate are assembled to form a liquid crystal display device with touch function. For this so-called in-cell touch panel, refer to Patent Document 1. [0003] Compared with the touch display device with an additional touch sensor substrate, the in-cell touch display device 70 has one less glass substrate, so it has the advantages of being thinner, improving ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/041G06F3/044G09G3/36G02F1/133
CPCG06F3/04184G06F3/0446
Inventor 松井义和住尚树
Owner INNOLUX CORP
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