Liquid crystal display device

A technology of a liquid crystal display device and a liquid crystal layer, which is applied in the directions of optics, instruments, nonlinear optics, etc., can solve problems such as crosstalk and deterioration of display characteristics, and achieve the effects of reducing crosstalk, good viewing performance, and good viewing performance

CN103713423BActive Publication Date: 2016-08-17MITSUBISHI ELECTRIC CORP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2016-08-17

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Abstract

The present invention relates to a liquid crystal display device, and provides a liquid crystal display device with good visibility. In a liquid crystal display device in which the liquid crystal layer is twisted and aligned in the state where no electric field is applied, the Δnd value of the liquid crystal layer at 550 nm is 300 nm to 400 nm, and the polarization axis directions of a pair of linear polarizers are respectively relative to the end faces on the near side of the liquid crystal layer. The alignment direction of the liquid crystal molecules is approximately parallel or approximately vertical, and the angle formed by the polarization axes of a pair of linear polarizers is designed to be greater than 85° and less than 90°. In a liquid crystal display device in which the liquid crystal layer is aligned substantially vertically in a state where no electric field is applied, the angle formed by the polarization axes of the pair of linear polarizers is 85° or more and less than 90°. In a liquid crystal display device driven by a transverse electric field, the uniaxial orientation angle of the liquid crystal layer in a state where no electric field is applied is greater than -45° and less than -40°, or greater than +40° and less than 45° (here, " "Angle" means that when viewed from the front with respect to the display screen, the 3 o'clock direction of the clockwise direction is set to 0°, the counterclockwise direction from there is set to "+", and the clockwise direction is set to "-").
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Description

[0001] This application is a divisional application of:

[0002] Invention name: liquid crystal display device

[0003] Application date: September 9, 2011

[0004] Application number: 201110267243.8. technical field

[0005] This application claims priority based on Japanese Patent Application Japanese Patent Application No. 2010-207821 for which it applied on September 16, 2010, and uses all the indication content.

[0006] The present invention relates to a liquid crystal display device. Background technique

[0007] Liquid crystal displays take advantage of advantages such as low power consumption, small size and light weight, and are used as monitors for personal computers (PCs) and portable information terminals, etc., and display devices for TVs, etc. A liquid crystal display device includes a plurality of pixels arranged in a matrix, and performs light modulation for each pixel to display an image.

[0008] As a liquid crystal display device, an active matrix liq...

Examples

no. 1 Embodiment approach

[0077] A parallax barrier system multi-screen liquid crystal display device according to a first embodiment of the present invention will be described with reference to the drawings. In this embodiment, a left and right two-screen display will be described as an example. In this embodiment mode, an active matrix liquid crystal display device using TFTs as pixel switching elements will be described as an example.

[0078] figure 1 It is a schematic exploded perspective view of the liquid crystal display device of this embodiment. figure 2 It is a schematic cross-sectional view showing main components of the liquid crystal display device according to the present embodiment. Figure 3A with Figure 3B is a diagram showing an example of a plan view of a parallax barrier layer.

[0079] figure 1 Arrows in , indicate the orientation direction of the liquid crystal layer 105, the absorption axes of the linear polarizers 102a and 102b, and the orientation directions of the vie...

no. 2 Embodiment approach

[0147] A parallax barrier system multi-screen display liquid crystal display device according to a second embodiment of the present invention will be described. Also in this embodiment, a left-right two-screen display device will be described as an example.

[0148] The basic configuration of the liquid crystal display device of this embodiment is the same as that of the first embodiment, and it is a transmissive liquid crystal display device including a backlight (BL) as in the first embodiment. The liquid crystal display device of this embodiment differs from the first embodiment in that the liquid crystal is in a VA (Vertical Alignment) mode in which the liquid crystal is substantially vertically aligned in a state where no electric field is applied.

[0149] In this embodiment, the basic configuration is the same as that of the first embodiment, so it will be described with reference to the drawings and symbols of the first embodiment.

[0150] The VA mode has an advantag...

no. 3 Embodiment approach

[0165] A parallax barrier system multi-screen display liquid crystal display device according to a third embodiment of the present invention will be described. Also in this embodiment, a left-right two-screen display device will be described as an example.

[0166] The basic configuration of the liquid crystal display device of this embodiment is the same as that of the first embodiment, and it is a transmissive liquid crystal display device including a backlight (BL) as in the first embodiment. The difference between the liquid crystal display device of this embodiment and the first embodiment is that it is an IPS (In-Plane Switching in-plane switching) mode or an FFS (Fringe Field Switching) mode of a liquid crystal mode driven by a transverse electric field. model. In these modes, both the pixel electrode and the counter electrode are formed on one substrate side.

[0167] In this embodiment, the basic configuration is the same as that of the first embodiment, so it will ...