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Normally-white liquid crystal display device and cover plate thereof

A technology of liquid crystal display device and cover plate, which is applied in nonlinear optics, instruments, optics, etc., can solve the problems of poor dark display picture effect, etc., and achieve the effect of improving the dark display picture effect and reducing the output amount.

Active Publication Date: 2014-02-26
TRULY SEMICON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, when the existing normally white liquid crystal display device does not apply a voltage to display, because it can transmit light, the external ambient light will be incident into the display device and reflected by the TFT substrate and then emitted, resulting in poor dark display effect.

Method used

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  • Normally-white liquid crystal display device and cover plate thereof
  • Normally-white liquid crystal display device and cover plate thereof
  • Normally-white liquid crystal display device and cover plate thereof

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Embodiment Construction

[0029] As mentioned in the background technology section, when the existing normally white liquid crystal display device displays without applying a voltage, because it can transmit light, the external ambient light will enter the display device and exit after reflection, resulting in a dark display effect. poor.

[0030] refer to figure 1 The cover plate of a general normally white liquid crystal display device includes: a transparent substrate 11; a black matrix 12 arranged on the lower surface of the transparent substrate 11, and the black matrix 12 covers a part of the lower surface of the transparent substrate 11 to form a light-transmitting display area and not a transparent non-display area; a transparent protective layer 13 arranged under the transparent substrate 11 and covering the black matrix 12 and the transparent substrate 11; a common electrode 14 arranged on the lower surface of the transparent protective layer.

[0031] The inventors have found that the dark ...

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Abstract

The invention discloses a normally-white liquid crystal display device and a cover plate thereof. The cover plate comprises a transparent substrate, wherein the transparent substrate comprises a display area, a non-display area, a protective layer arranged on one side of the transparent substrate, a common electrode arranged on the side, away from the transparent substrate, of the protective layer, and a black matrix arranged between the protective layer and the common electrode or between the protective layer and the transparent substrate, the light transmittance of the protective layer is 10%-80% with the end point value included, and the black matrix is opposite to the non-display area. The arrangement of the cover plate can effectively reduce the emitting amount of natural light, and therefore the dark display frame effect of the normally-white liquid crystal display device adopting the cover plate can be improved effectively.

Description

technical field [0001] The present invention relates to the technical field of display devices, and more specifically, to a normally white liquid crystal display device and a cover plate thereof. Background technique [0002] This section is intended to provide a background or context for implementations of the invention that are recited in the claims. The descriptions herein may include concepts that could be explored, but not necessarily concepts that have been previously thought of or explored. Therefore, unless otherwise indicated herein, what is described in this section is not prior art to the description and claims in this application and is not admitted to be prior art by inclusion in this section. [0003] The normally white liquid crystal display device is referred to as NW (Normally White) liquid crystal device for short. The polarities of the matching upper and lower polarizers are perpendicular to each other, so when no voltage is applied to the liquid crystal ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/1335G02F1/1343G02F1/13
Inventor 胡君文李林梅新东何基强
Owner TRULY SEMICON
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