BACKGROUND

1. Field

The present disclosure relates to a display device and, more particularly, to a display device with improved transmittance.

2. Description of Related Art

With the continuous development of technology related to displays, there is a trend in the display industry toward more compact, thinner and lighter products. Thus, thin displays, such as liquid crystal display devices, organic light-emitting diode display devices and inorganic light-emitting diode display devices have substituted for CRT displays as the dominant display devices in the market. Thin displays have an extensive application scope, and we can see them in many of consumer electronics, such as mobile phones, laptops, video cameras, still cameras, music players, mobile navigators, TV sets, etc.

Therein, liquid crystal display devices have been well developed and popular among consumers. However, in view of the consumers' increasing requirements to display quality of display devices, almost every dealer in this industry is investing in advancing display devices particularly in terms of display quality.

As liquid crystal display devices have entered an era of high resolution, transmittance of panels is now a key factor to the resulting display quality. Therefore, the relevant dealers all look to transmittance and contrast when improving display quality of display devices.

Therein, one factor related to the transmittance of the display devices is the overlapping area between common electrodes and pixel electrodes. In particular, slits of the pixel electrodes are the main region related to the tilts of the display medium (such as liquid crystal molecules). Hence, the overlapping region between the common electrodes and the pixel electrodes near to the slits of the pixel electrodes is one important factor related to the transmittance of the display device.

Therefore, it is desirable to provide a display device with improved transmittance to obtain better display quality and meet requirements of customers.

SUMMARY

An object of the present disclosure is to provide a display device, wherein the relative position between a transparent conductive layer and a drain electrode are adjusted to improve the transmittance of the display device.

The display device of the present disclosure comprises: a substrate; a scan line disposed on the substrate; a drain electrode, disposed on the substrate and comprising an arc edge; a first transparent conductive layer disposed on the substrate; and a second transparent conductive layer disposed between the substrate and the first transparent conductive layer, wherein the arc edge is located outside the scan line, and the arc edge is not overlapped with the second transparent conductive layer.

In the display device of the present disclosure, the relative position between the second transparent conductive layer and the drain electrode are designed. In the display device of the present disclosure, the voltage difference between the first transparent conductive layer and the second transparent conductive layer influences the tilts of the display medium (for example, liquid crystal molecules), and the transmittance of the display device is related to the tilts of the display medium. The area that the display medium tilts based on the voltage change can be increased when the overlapping region of the first transparent conductive layer and the second transparent conductive layer is expanded; thus the transmittance of the display device can be improved.

Other objects, advantages, and novel features of the present disclosure will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.

