Liquid crystal display device

• US 10,509,284 B2
• Filed: 03/27/2017
• Issued: 12/17/2019
• Est. Priority Date: 03/30/2016
• Status: Active Grant

• Current Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Original Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Inventors: Sakamoto, Mayuko, Tanaka, Tetsunori, Yasuda, Yuki
• Primary Examiner(s): Nguyen, Sang V
• Application Number:
  US16/083,551
• Publication Number:
  US 20190086749A1
• Time in Patent Office: 995 Days
• CPC Class Codes: G02F 1/133528 Polarisers
• CPC Class Codes: G02F 1/133531 characterised by the arrangement of polariser or analyser axes
• CPC Class Codes: G02F 1/133555 Transflectors
• CPC Class Codes: G02F 1/134363 for applying an electric field parallel to the substrate, i.e. in-plane switching [IPS]
• CPC Class Codes: G02F 1/136227 Through-hole connection of the pixel electrode to the active element through an insulation layer

Abstract

A liquid crystal display device according to an aspect of the disclosure includes a liquid crystal panel including an element substrate, a counter substrate facing the element substrate, a liquid crystal layer sandwiched between the element substrate and the counter substrate, an incident-side linear polarizing plate arranged on a light-incident side of the liquid crystal layer, and an emission-side linear polarizing plate arranged on a light-emission side of the liquid crystal layer. Each of the element substrate and the counter substrate uses a resin film as base material. A plurality of insulating films are formed on the base material. A contact hole is formed in the plurality of insulating films, the contact hole being rectangular in plan view. Either a long side or a short side of the contact hole is parallel with an absorption axis of the incident-side linear polarizing plate or the emission-side linear polarizing plate.

Claims

1. A liquid crystal display device comprising:

a liquid crystal panel including;

an element substrate,

a counter substrate facing the element substrate,

a liquid crystal layer sandwiched between the element substrate and the counter substrate,

an incident-side linear polarizing plate arranged on a light-incident side of the liquid crystal layer, and

an emission-side linear polarizing plate arranged on a light-emission side of the liquid crystal layer, wherein

the element substrate includes a resin film as a base material,

a plurality of insulating films, a plurality of gate bus lines, and a plurality of source bus lines are defined on the base material,

a contact hole is defined in the plurality of insulating films, the contact hole being rectangular in a plan view and arranged obliquely with respect to the plurality of gate bus lines and the plurality of source bus lines, and

either a long side or a short side of the contact hole is parallel with an absorption axis of the incident-side linear polarizing plate or the emission-side linear polarizing plate.

2. The liquid crystal display device according to claim 1, wherein

the contact hole includes a plurality of through-holes defined in the plurality of insulating films, and

at least one of the plurality of through-holes is made of an inorganic film.

3. The liquid crystal display device according to claim 1, wherein storage capacitance is defined in the contact hole.

4. The liquid crystal display device according to claim 1, wherein the liquid crystal layer is in a horizontal alignment mode.

5. The liquid crystal display device according to claim 1, wherein the liquid crystal layer is in a vertical alignment mode.