Touch display panel and manufacturing method thereof

Abstract

The invention provides a touch display panel, which comprises a TFT (Thin-Filter Transistor) substrate, a liquid crystal layer, a CF (Color Filter) substrate, a touch sensor and a polaroid from bottom to top, wherein the touch sensor comprises an emitting electrode, a first insulation layer, a receiving electrode and a second insulation layer from bottom to top; the emitting electrode and the receiving electrode are independently formed by a plurality of strip electrodes which are spaced horizontally, and are vertically cross; a first through hole is arranged on the top of the end of the emitting electrode; the first through hole passes through the first insulation layer, the receiving electrode and the second insulation layer; the first through hole and the second through hole are filled with conducting materials; a second through hole is arranged on the top of the end of the receiving electrode and passes through the second insulation layer; an electrode routing layer is also arranged on the top of the first through hole and the second through hole and is independently electrically connected with the emitting electrode and the receiving electrode through the conducting materials in the first through hole and the second through hole; and the electrode routing layer is overlapped with a touch flexible circuit board. The invention also provides a manufacture method of the touch display panel.

Description

technical field [0001] The present invention relates to the technical field of touch display, in particular to a touch display panel and a manufacturing method thereof. Background technique [0002] With the development of the information age and the acceleration of the pace of life, touch technology has gradually replaced the traditional mouse and keyboard due to its humanized design and simple and fast input, and is widely used in various electronic products. Among them, the capacitive touch screen is widely used due to its advantages of fast response, high sensitivity, good reliability and high durability. The capacitive touch screen mainly includes a protective cover (Cover Lens) and a touch sensing layer (Touch Sensor). The sensing principle is to apply a voltage to the four corners of the sensing area of ​​the screen and form a fixed electric field. The capacitance change between the human body and the transparent electrode can cause the electric field to induce a cur...

AI Technical Summary

Problems solved by technology

see figure 1 and figure 2 As shown, the existing touch display panel includes, from top to bottom, a protective cover 301, a polarizer (Polarize, POL) 302, a touch sensing layer 303, a color filter (Color Filter, CF) substrate 304, a liquid crystal (LC) layer 305, and a thin-film transistor (Thin-Film Transistor, TFT) substrate 306, wherein the touch sensing layer 303 includes receiving electrodes (RX electrodes) 3031 and emitting electrodes (TX electrodes) 3032 arranged at intervals up and down, and located at The insulating layer (OC) 3033 between the two, the RX electrode 3031 and the TX electrode 3032 are vertically intersected in strips, and the ends of the RX electrode 3031 and the TX electrode 3032 are drawn out by double-ended or single-ended leads. Specifically, the RX electrode The end of 3031 leads down to the layer where the TX electrode 3032 is located through the via hole (VIA) below it, and then leads out of the touch sensing layer 3033 with the TX electrode 3032 respectively, and traces 3034 on the periphery of the touch sensing layer 303 to Touch flexible circuit board (FPC) connection (Bonding) bit 307, since RX electrodes 3031 and TX electrodes 3032 require peripheral wiring, it is easy to generate signal interference

In addition, it is necessary to use a protective cover 301 or a polarizer 302 printed with a black matrix (Black Matrix, BM) on the edge to cover the peripheral wiring 3034 of the touch sensing layer 303 and the touch flexible circuit board connection 307, so that Make the production steps of the protective cover 301 or the polarizer 302 increase, and the production cost increases

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