BACKGROUND

1. Technical Field

The present disclosure relates to an electro-optical device and an electronic apparatus.

2. Related Art

An example of an electro-optical device is an active drive type liquid crystal device including a transistor as a switching element in a pixel. In an active drive type liquid crystal device, in order to bond one substrate, on which the transistor is disposed, and another substrate including a light-shielding portion called a Black Matrix (BM), which defines an opening portion of the pixel, to be oppositely arranged with high positional accuracy, a photo-curable type seal material may be used in place of a thermosetting seal material. In order to cure the photo-curable type seal material sufficiently, it is preferable to radiate light from both sides of a pair of substrates. However, in the seal region in which the seal material of the one substrate is arranged, there is a light-shielding film, such as a wiring, related to driving the transistor, incident light is shielded by the light-shielding film, and there is a possibility that curing of the seal material is hindered.

Therefore, for example, JP-A-2000-89235 discloses a liquid crystal display configured to transmit light by disposing a slit in a light-shielding film located directly above or directly below a photo-curable type seal material sandwiched between two substrates. According to JP-A-2000-89235, in order to ensure curing of the seal material, it is said that it is preferable to set the width of the light-shielding film to not greater than 150 μm and the opening width to not less than 5 μm.

Further, for example, JP-A-2007-41346 discloses an electro-optical device including a driving circuit unit which is disposed in a peripheral region located around an image display region of the first substrate and supplies various signals to a pixel unit, a driving power supply line which includes an extending portion extending so as to overlap a seal region and supplies a power supply potential to the driving circuit unit, and a counter electrode potential line which includes a wiring portion overlapping the extending portion via an interlayer insulating film and supplies a predetermined potential to the counter electrode. JP-A-2007-41346 describes that a photo-curable resin is arranged in the seal region to form a sealing portion, and gaps are disposed for each of the extending portion and the wiring portion in the seal region in order to irradiate the photo-curable resin with light from the first substrate side.

In the above-mentioned JP-A-2000-89235 and JP-A-2007-41346, although specific numerical values are not illustrated for the width of the seal region where the photo-curable type seal material is arranged, in discussing the reliability of the liquid crystal display element as an electro-optic device, the width of the seal region is an important factor. When the width of the seal region in which the seal material is arranged is narrowed, the bonding strength of the pair of substrates is affected, and moisture and the like easily enter the liquid crystal layer surrounded by the seal material from the outside. Therefore, it is necessary to secure a predetermined width for the seal region. On the other hand, as described in JP-A-2007-41346, not only the peripheral region but also the driving circuit unit and the like are arranged in the peripheral region outside the image display region. Thus, it is difficult to reduce the size of the electro-optical device when the peripheral region is secured so as to include the seal region having a predetermined width.

SUMMARY

An electro-optical device according to an aspect of the present disclosure is an electro-optical device in which an electro-optical element is provided between a first substrate and a second substrate which are disposed to face each other via a photo-curable type seal material, wherein at least the second substrate is transmissive and includes a light-shielding pattern in a part of a seal region of the first substrate where the seal material is disposed, and a semiconductor layer of a transistor included in a driving circuit for driving the electro-optical element is disposed to overlap, in plan view, with the light-shielding pattern.

In the electro-optical device described above, it is preferable that the first substrate and the second substrate be transmissive, and that the semiconductor layer be disposed between the light-shielding pattern and a light-shielding layer disposed in an island-shape on the first substrate.

In the electro-optical device described above, the transistor may include two transistors coupled in parallel.

In the electro-optical device described above, it is preferable that the light-shielding pattern include a plurality of light-shielding patterns arranged at intervals in plan view, that the semiconductor layer in one of the two transistors coupled in parallel be disposed on the first substrate to overlap, in plan view, with one of two adjacent light-shielding patterns of the plurality of the light-shielding patterns, and that the semiconductor layer in the other of the two transistors coupled in parallel be disposed on the first substrate to overlap, in plan view, with the other of the two adjacent light-shielding patterns.

In the electro-optical device described above, the light-shielding pattern is a power supply wiring.

In the electro-optical device described above, the electro-optical element may be a liquid crystal element and may include a pixel electrode provided for each pixel on the first substrate and a common electrode that is provided on the second substrate and to which a common potential is supplied, and the light-shielding pattern may be a common potential wiring.

An electronic apparatus according to an aspect of the present disclosure includes the electro-optical device described above.

