Touch display panel and touch display device

Abstract

The invention provides a touch display panel and a touch display device and belongs to the field of touch technology. The touch display panel comprises a color film substrate, an array substrate and a liquid crystal layer, wherein the array substrate is arranged opposite to the color film substrate, and the liquid crystal layer is located between the color film substrate and the array substrate. A black matrix is arranged on the color film substrate, a plurality of parallel first electrodes made of metal are arranged on the color film substrate, and the first electrodes are completely projected into the black matrix in the direction perpendicular to the color film substrate. The color film substrate is further provided with a plurality of parallel second electrodes formed by transparent conductive layers, and the second electrodes and the first electrodes are arranged in an insulated and crossed mode. The first electrodes are emitting electrodes and the second electrodes are receiving electrodes; alternatively, the first electrodes are receiving electrodes and the second electrodes are emitting electrodes. According to the technical scheme, the display effect of the touch display panel can be guaranteed, the load of the touch display panel can be lowered, and the sensitivity of the touch display panel can be improved.

Description

technical field [0001] The present invention relates to the field of touch technology, in particular to a touch display panel and a touch display device. Background technique [0002] At present, the touch screen on the market includes an external touch screen and an integrated touch screen. The integrated touch screen is to integrate the touch panel while producing the liquid crystal display panel. There are two ways to integrate the touch screen, one is to integrate the function of the touch panel above the color filter substrate of the liquid crystal display panel (also known as on-cell integration), and the other is to integrate the function of the touch panel on the LCD panel. Between the color filter substrate and the array substrate of the display panel (also called in-cell integration). [0003] The on-cell integration method is a commonly used integration method. In order not to affect the transmittance of the touch display panel, in the prior art, a transparent co...

AI Technical Summary

Problems solved by technology

However, since the emitting electrode is located inside the color filter substrate, the touch signal may interfere with the deflection of the liquid crystal and affect the display effect of the touch display panel.

In addition, the signal on the thin film transistor will interfere with the touch signal, reducing the sensitivity of the touch display panel; and for the display panel in the shared common electrode mode, there is a problem of time-division multiplexing of the common electrode signal and the touch signal; and for TN (Twisted nematic) display panel, the transparent conductive layer on the side of the color filter will shield the Touch (touch) signal; at the same time, due to the high resistivity of the transparent conductive layer, the transparent conductive layer is used to make the transmitting electrode and the receiving electrode , will make the load of the touch display panel larger and the sensitivity will be further reduced

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