Touch display device integrated with fingerprint recognition function and manufacturing method thereof
A technology of a touch display device and a manufacturing method, which is applied in the directions of character and pattern recognition, fingerprint/palm print acquisition/organization, print image collection, etc., and can solve the problem of high cost, integration of touch display panels, and accurate touch control Low degree and other issues
Inactive Publication Date: 2020-01-07
SHENZHEN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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Problems solved by technology
However, traditional touch display panels have always had problems such as large signal noise, low touch accuracy, and low product yield, resulting in poor user experience
[0003] Furthermore, for the current display devices with fingerprint recognition function, the fingerprint recognition module is an independent system, which cannot be completely integrated with the touch display panel.
At the same time, its fingerprint identification module can only identify the user's identity when the display device is unlocked, but cannot monitor in real time (real-time monitoring)
In view of the above factors, traditional touch display devices are not only costly, but also lack convenience and safety
Method used
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[0018] In order to make the purpose, technical means and effects of the present invention clearer, the present invention will be further elaborated below in conjunction with the accompanying drawings. It should be understood that the embodiments described here are only some, not all, embodiments of the present invention, and are not intended to limit the present invention.
[0019] Please refer to Figures 1A-1D , which shows a partial cross-sectional view of the manufacturing method of the touch display device according to the present invention. The manufacturing method of the touch display device of the present invention comprises the following steps:
[0020] First, if Figure 1A As shown, a thin film transistor substrate 10 is provided, and a light emitting area AA and a touch area BB are defined on the thin film transistor substrate 10 . Specifically, the thin film transistor layer 101 is formed on the base substrate 100, and the base substrate 100 may be one of a silic...
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A touch display device comprises a display screen and a touch chip. The display screen comprises a plurality of pixel units arranged in an array, and each pixel unit comprises a gate line, a touch signal line, a touch sensing unit and a touch transistor, wherein the gate line and the touch signal line are crossed with each other. The touch sensing unit comprises a touch sensing electrode. And a grid electrode of the touch transistor is electrically connected with the grid line, and a drain electrode is electrically connected with the touch sensing unit. The touch chip is electrically connectedwith the source electrode of the touch transistor through a touch signal line, is used for charging the touch sensing unit when the display screen displays the nth frame of picture, discharging the touch sensing unit when the display screen displays the (n + 1) th frame of picture, and comparing the charge data of the touch sensing unit to determine a touch position coordinate and generate a corresponding fingerprint signal.
Description
technical field [0001] The invention relates to the field of display technology, in particular to a touch display device integrated with a fingerprint identification function. Background technique [0002] In recent years, the public has a high interest in display devices with an in-display fingerprint recognition function. However, traditional touch display panels have always had problems such as large signal noise, low touch accuracy, and low product yield, resulting in poor user experience. [0003] Furthermore, for the existing display devices with fingerprint recognition function, the fingerprint recognition module is an independent system, which cannot be completely integrated with the touch display panel. At the same time, its fingerprint identification module can only identify the identity of the user when the display device is unlocked, but cannot monitor in real time (real-time monitoring). In view of the above factors, traditional touch display devices are not o...
Claims
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IPC IPC(8): G06F3/044G06K9/00G06V40/13
CPCG06F3/044G06F2203/04103G06V40/1306G06F3/0412G06F3/04164G06F3/0443G06V40/13G06V40/1365G06F3/0418G06F3/0421G06V40/1318
Inventor 陆炜
Owner SHENZHEN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD