A liquid crystal display device and its manufacturing method

Abstract

The invention provides a liquid crystal display device for the touch panel. The liquid crystal display device comprises a first substrate, a second substrate, a liquid crystal layer, a plastic frame and an electromagnetic shielding layer, wherein the first substrate and the second substrate are oppositely arranged in a spaced way; the liquid crystal layer is mounted between the first and second substrates; the plastic frame is arranged between the first and the second substrates so as to seal the liquid crystal layer; the electromagnetic shielding layer is arranged on the first and second substrates. And a conductive metal layer arranged in a grounded way is mounted on the first substrate; the conductive metal layer is electrically connected to the electromagnetic shielding layer; the electromagnetic shielding layer comprises a main body part and an extending part. The main body part is arranged on the second substrate; the extending part extends from the main body part to the conductive metal layer of the first substrate so as to electrically connect the main body part with the conductive metal layer.

Description

【Technical field】 [0001] The present invention relates to a liquid crystal display device for a touch panel, in particular to a liquid crystal display device for a touch panel with an electromagnetic shielding layer. 【Background technique】 [0002] Touch display devices have a wide range of applications and have been widely used in monitors of portable notebook computers, input functions of portable personal mobile phones, various information appliances, public information system equipment, and office automation equipment. Wait. [0003] Such as figure 1 As shown, the touch display device is a device formed by laminating a transparent touch panel 100 and a liquid crystal display device 200 . The touch panel 100 is located on the liquid crystal display panel 200 for sensing external touch signals. The liquid crystal display device 200 is used for displaying images. Through the cooperation of the liquid crystal display device 200 and the touch panel 100, users can perform in...

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Problems solved by technology

Furthermore, in order to ensure the electrical connection between the conductive adhesive plaster 370 and the electromagnetic shielding layer 360, it is necessary to ensure that the conductive adhesive plaster 370 and the electromagnetic shielding layer 360 have a sufficiently long contact area, that is, the conductive adhesive plaster 370 must be in contact with the electromagnetic shielding layer on the color filter substrate 320. Layer 360 has a certain overlapping length in order to achieve good electrical conductivity. The overlapping length b of conductive adhesive tape 370 and color filter substrate 320 is generally greater than 0.5mm (millimeters) in the prior art, so it is difficult for the design of narrow frame troubled

[0015] Figure 4 Yes figure 2 For the partial enlarged plan view of the 300Q block of the liquid crystal display device, please refer to Figure 4 , an iron frame 350 needs to be set on the conductive adhesive plaster 370. Since the conductive adhesive plaster 370 has a certain thickness, there will be gaps 380 on both sides of the conductive adhesive plaster. problem, which in turn causes poor display of the in-plane switching liquid crystal display device 300

[0016] In addition, the conductive adhesive tape 370 will occupy a certain thickness, therefore, it also causes difficulties for the thinning of the plane switching liquid crystal display device 300.

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