Organic light emitting diode array substrate and its preparation method, touch display device

Abstract

The present invention relates to an organic light emitting diode array substrate and its preparation method, and a touch display device. The array substrate includes: a first metal layer pattern, a transparent conductive layer pattern and an insulating layer pattern, the first metal layer pattern includes metal bridge lines, The transparent conductive layer pattern includes an anode, a plurality of first electrodes extending along a first direction, and a plurality of second electrodes extending along a second direction, each first electrode includes a plurality of first sub-electrodes, and each first electrode Each of the first sub-electrodes is electrically connected to a corresponding one of the metal bridge wires. In the array substrate, the first electrode and the second electrode are formed on the same layer as the anode of the organic light-emitting diode, and a plurality of first sub-electrodes are electrically connected through metal bridge lines to form the first electrode. The touch sensor composed of the first electrode The touch driving line formed by the line and the second electrode realizes the function of a touch sensor and can be applied to AMOLED displays with different packaging processes.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to an organic light emitting diode array substrate, a preparation method thereof, and a touch display device. Background technique [0002] Active Matrix Organic Light Emitting Diode (AMOLED) has the characteristics of fast response speed, high brightness, low power consumption, good viewing angle, and flexible display, and has become the mainstream of display technology development. The AMOLED display with touch function is based on the demand for enriched functions. The more commonly used touch technologies include On-cell touch technology and In-cell touch technology. On-cell touch technology is often used in small and medium-sized AMOLED displays. Control technology, and In-cell touch technology can make the display thinner and lighter than On-cell touch technology, so the application of In-cell touch technology to AMOLED displays has attracted more attention. [0003]...

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Problems solved by technology

[0003] But the existing In-cell touch technology is limited to the glass packaging process

However, the above method is limited to the glass packaging process, and cannot be realized in the thin film packaging process. The reason is that the thin film packaging process is to deposit multiple thin films on the array substrate in a vacuum environment to prevent water and oxygen from corroding OLED devices. , this kind of packaging method does not need to cover the glass substrate above the array substrate, that is, there is no packaging substrate, so the sensor cannot be fabricated on the packaging substrate. It can be seen that the existing In-cell touch technology applied to AMOLED displays has a large limitations

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