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Circular polarization plate, vertically-aligned liquid crystal display panel and manufacturing method thereof

A technology of liquid crystal display panels and manufacturing methods, which can be used in the direction of polarizing elements, thin material processing, instruments, etc., and can solve the problems of weakening black and white contrast

Inactive Publication Date: 2006-12-20
SHARP KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the liquid crystal display panel is viewed at an oblique angle, this state weakens the contrast between black and white

Method used

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  • Circular polarization plate, vertically-aligned liquid crystal display panel and manufacturing method thereof
  • Circular polarization plate, vertically-aligned liquid crystal display panel and manufacturing method thereof
  • Circular polarization plate, vertically-aligned liquid crystal display panel and manufacturing method thereof

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no. 1 example

[0102] will now refer to figure 1 Through 8B, a description is given of the circularly polarizing plate and the vertical alignment type liquid crystal display panel according to the first embodiment of the present invention. The single or single liquid crystal display unit included in the liquid crystal display panel of this embodiment is basically the same as Figure 27 The single LCD unit shown is the same. Accordingly, the liquid crystal 23 fills the space surrounded by the substrate 20 on the display side, the substrate 21 on the opposite side, and the seal 22 . The substrate 20 is equipped with electrodes 24 and the substrate 21 is equipped with electrodes 25 .

[0103] For example, when the liquid crystal display panel is a color liquid crystal display panel, one of the substrates (ie, the substrate 20) is, for example, a so-called color filter substrate. The color filter substrate is provided with a color filter layer (not shown) having RGB hues. The electrode 24 is...

no. 2 example

[0149] will now refer to Figures 17 to 20 , a description is given about the circularly polarizing plate and the vertical alignment type liquid crystal display panel according to the second embodiment of the present invention. The single liquid crystal display unit included in the liquid crystal display panel of this embodiment and Figure 27 The individual LCD units shown in are basically the same. More specifically, the liquid crystal 23 fills a space hermetically surrounded by the substrate 20 on the display side, the substrate 21 on the other side opposite to the display side, and the sealing member 22 . The substrate 20 is equipped with electrodes 24 and the substrate 21 is equipped with electrodes 25 .

[0150] The liquid crystal display panel of this embodiment is of vertical alignment type. The liquid crystal display panel uses a circular polarizing plate composed of a linear polarizing plate and a λ / 4 retardation plate bonded together. The circular polarizing plat...

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Abstract

A circularly polarized plate comprising a lambda / 4 phase difference plate (1) and a linearly polarized plate (2) laminate on the main surface of the lambda / 4 phase difference plate (1) so that its absorption axis forms an angle of about 45 DEG. with respect to the delay phase axis of the lambda / 4 phase difference plate (1). The lambda / 4 phase difference plate (1) has characteristics of reverse wavelength dispersion and an Nz coefficient of at least 1.6. The circularly polarized plate comprises the lambda / 4 phase difference plate having characteristics of reverse wavelength dispersion and an Nz coefficient of at least 1.6, and the linearly polarized plate laminate on the main surface of the lambda / 4 phase difference plate. When a reference direction is set as a direction parallel to one side of a rectangular flat shape, the circularly polarized plate is formed so that the delay-axis direction of the lambda / 4 phase difference plate forms an angle of about +90 DEG. with respect to the reference direction, and the absorption-axis direction of the linearly polarized plate forms an angle of about +45 DEG. with respect to the reference direction. When any of these configurations is used, a circularly polarized plate excellent in viewing angle characteristics and a vertically-oriented liquid crystal display panel provided with this are provided.

Description

technical field [0001] The invention relates to a circular polarizing plate, a vertical alignment type liquid crystal display panel and a manufacturing method thereof. Background technique [0002] The liquid crystal display panel has two substrates between which liquid crystal is hermetically stored, and electrodes are formed on major surfaces of the substrates facing each other. [0003] Figure 27 is a schematic cross-sectional view of a liquid crystal display panel. The electrode 24 is formed on the substrate 20 on the display side, and the electrode 25 is formed on the opposite substrate 21 . The substrates 20 and 21 are bonded together with the electrodes 24 and 25 facing each other through the sealing member 22 . Spacers (not shown) keep the distance between the substrates 20 and 21 constant. The area surrounded by the two substrates 20 and 21 and the seal 22 is hermetically filled with liquid crystal 23 . In the present invention, a structure including liquid cry...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/30G02F1/1335G02F1/13363G02F1/139
CPCG02B5/3083Y10T428/1041G02F1/1393G02F2001/133638C09K2323/031G02F1/133638G02B5/30G02F1/133
Inventor 臼仓奈留阿比留学夏目隆行山渕浩二中原真
Owner SHARP KK
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