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Liquid crystal display device and electronic equipment

A liquid crystal display device and liquid crystal layer technology, applied in nonlinear optics, instruments, optics, etc., can solve problems such as reduced contrast, chaotic liquid crystal orientation, and lack of consideration

Inactive Publication Date: 2004-11-03
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, since each alignment region of the liquid crystal has different viewing angle characteristics, when the liquid crystal device is viewed from an oblique direction, smudge-like spots are seen
[0010] Furthermore, in an active matrix liquid crystal display device, an electric field is generated at the position where the switching element is arranged and its surroundings due to the switching operation of the element, and this electric field disturbs the alignment of the liquid crystal and lowers the contrast ratio. The description of the formation area of ​​the switching element does not consider at all

Method used

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  • Liquid crystal display device and electronic equipment
  • Liquid crystal display device and electronic equipment
  • Liquid crystal display device and electronic equipment

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no. 1 Embodiment

[0031] figure 1 It is a partial perspective view showing the display area of ​​the liquid crystal display device of the first embodiment of the present invention, figure 2 It is a planar configuration diagram showing one pixel region of the same liquid crystal display device, image 3 is along figure 2 The cross-sectional structure diagram of the line A-A' in the middle. The liquid crystal display devices shown in these figures are active matrix color liquid crystal display devices using TFD (thin film diode) elements (two-terminal nonlinear elements) as switching elements. Additionally, if image 3 As shown schematically, the liquid crystal layer in this embodiment is composed of liquid crystals whose initial orientation is vertical orientation and whose dielectric anisotropy is negative.

[0032] Such as figure 1 As shown, the liquid crystal display device of this embodiment is mainly composed of an element substrate 25 and a counter substrate 10 facing each other, an...

no. 2 Embodiment

[0053] Below, refer to Figure 5 A second embodiment of the present invention will be described. Figure 5 It is a plan view showing the structure of one pixel region of the liquid crystal display device of this embodiment. The liquid crystal display device of this embodiment has the same basic structure as that of the liquid crystal display device of the first embodiment above, but the planar shape of the reflection layer 120 is different from that of the liquid crystal display device of the first embodiment. figure 2 The reflective layer 20 shown is different.

[0054] That is, in the previous first embodiment, the opening region 20a of the reflective layer 20 is formed approximately in the center of the dot region, but in the reflective layer 120 of the present embodiment, the opening region 120a serving as the transmissive display region is separated from the element substrate 25 side. The pixel electrodes 31 have approximately the same width.

[0055] In the liquid cr...

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Abstract

The invention provides a liquid crystal display having uniform display and having a wide viewing angle despite the fact that the display includes active elements for switching pixels in the display area, and an electronic device including the same. Specifically, the invention is a transflective liquid crystal display, each dot of which has a reflective display area and a transmissive display area. The liquid crystal display can include an element substrate having a plurality of pixel electrodes, each pixel electrode being provided with a thin film diode (TFD) element, and an opposite substrate facing the element substrate. A reflective layer formed on the opposite substrate extends directly below the TFD element.

Description

technical field [0001] The present invention relates to a liquid crystal display device and electronic equipment. Background technique [0002] As a liquid crystal display device, it is known to have a liquid crystal layer sandwiched between an upper substrate and a lower substrate, and a reflective film in which an opening for light transmission is formed on a metal film such as aluminum on the inner surface of the lower substrate. A transflective liquid crystal display device in which the film functions as a transflector. In addition, in such a transflective liquid crystal display device, as a technique for improving brightness and contrast, a liquid crystal layer in which a reflective display region corresponding to the formation region of the reflective film and a transmissive display region corresponding to the opening is proposed. A so-called "multi-gap structure" liquid crystal display device having different thicknesses (for example, refer to Patent Document 1). ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/1335G02F1/1333G02F1/1343G02F1/1365
CPCG02F2001/133541G02F1/133371G02F2203/09G02F1/134309G02F1/133541G02F1/1335
Inventor 前田强
Owner SEIKO EPSON CORP