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Liquid crystal display device and electronic instrument

A liquid crystal display device and liquid crystal technology, applied in the direction of instruments, optics, nonlinear optics, etc., can solve the problems of area reduction, dark display, large aperture ratio, etc., and achieve the effect of preventing the reduction of light quantity

Inactive Publication Date: 2005-02-23
BOE TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] First of all, since the liquid crystal display device 100 is in the transmissive mode, the light transmitted through the slit 110 is used for display, so the area of ​​the slit 110 relative to the reflective film 104 (that is, the aperture ratio) affects the brightness of the display.
If the aperture ratio is large, although the display brightness in the transmissive mode can be improved, the large aperture ratio reduces the area of ​​the reflective film 104, so the display in the reflective mode is dark.

Method used

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  • Liquid crystal display device and electronic instrument
  • Liquid crystal display device and electronic instrument
  • Liquid crystal display device and electronic instrument

Examples

Experimental program
Comparison scheme
Effect test

no. 1 Embodiment

[0071] (First embodiment: liquid crystal display device)

[0072] Next, a first embodiment of the present invention will be described with reference to the drawings.

[0073] figure 1 It is a partial sectional structural view of the liquid crystal display device of this embodiment. This embodiment is an example of a passive matrix transflective color liquid crystal display device. In addition, in the following drawings, film thicknesses, dimensional ratios, and the like of each constituent element are appropriately changed for clarity of the drawings.

[0074] The liquid crystal display device 1 of the present embodiment, as figure 1 As shown, it is generally composed of a liquid crystal panel 1, which is composed of a lower substrate 2 and an upper substrate 3 placed opposite to each other, and a liquid crystal 4 composed of STN (Super Twisted Nematic) liquid crystal, etc. is sandwiched between the upper and lower substrates 2 and 3. constituted, and a backlight (illumi...

no. 2 Embodiment

[0081] (Second embodiment: liquid crystal display device)

[0082] In this embodiment, the overall configuration of the liquid crystal display device is the same as figure 1 The first embodiment shown is the same, so detailed description is omitted. The difference between the liquid crystal display device of this embodiment and the liquid crystal display device of the first embodiment is that a polarizing plate 20 and a reflective polarizing plate 21 obtained by sequentially stacking layers are arranged on the outer surface of the lower substrate 2, and only this part will be used below. figure 2 Be explained. figure 2 It is a partial sectional structural view of the liquid crystal display device of this embodiment. again, in figure 2 neutralize figure 1 The common constituent elements are marked with the same reference numerals.

[0083] figure 2 The polarization axes of the polarizing plate 20 and the reflective polarizing plate 21 on the outer surface of the lower...

no. 3 Embodiment

[0085] (Third embodiment: liquid crystal display device)

[0086] image 3 It is a partial cross-sectional structural view of a liquid crystal display device according to a third embodiment of the present invention. The liquid crystal display device of the present embodiment shown in this illustration, and figure 2 The difference of the liquid crystal display device of the second embodiment shown is that the color filter 11 is formed by lamination on the semi-transmissive reflection film 6, and the polarizing layer 7 is arranged on this color filter, while the stripes of the lower substrate 2 The strip-shaped electrodes 8 extend along the vertical direction of the paper surface, and the stripe-shaped electrodes 14 of the upper substrate 3 extend along the parallel direction of the paper surface. refer to this part image 3 Be explained. and, yes image 3 neutralize figure 2 The common elements in are marked with the same reference numerals.

[0087] exist image 3 In...

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PUM

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Abstract

The invention seeks to provide a liquid-crystal display device of transflective type having a reflection mode and a transmission mode, with excellent visibility, in which the brightness of a display in the transmission mode is enhanced, and an electronic apparatus that includes this liquid-crystal display device. A liquid-crystal display device 1 of transflective type, wherein liquid crystals 4 are held between an upper substrate 3 and a lower substrate 2 opposed to each other, a polarizer 13 and a polarization layer 7 are respectively disposed over and under the liquid crystals 4, an illumination device 5 is arranged on the outer surface side of the lower substrate 2, and a display is presented through the changeover between a transmission mode and a reflection mode, the liquid-crystal display device 1 comprising a transflective film 6 and the polarization layer 7 formed on the transflective film 6 which are disposed on the inner surface side of the lower substrate 2, and an electronic apparatus including the liquid-crystal display device 1.

Description

technical field [0001] The present invention relates to a liquid crystal display device and electronic equipment, and particularly relates to the configuration of a transflective liquid crystal display device capable of displaying sufficient brightness even in a transmissive mode. Background technique [0002] Because reflective liquid crystal display devices do not need light sources such as backlights and consume less power, they have been widely used in the display parts of various portable electronic instruments and devices in the past. [0003] However, since natural light and illumination light are used for display, there is a problem that it is difficult to see clearly in a dark place. Therefore, a new type of liquid crystal display device has been proposed, which uses external light in a bright place like a common reflective liquid crystal display device, and uses an internal light source to display in a dark place, that is, this liquid crystal display The device ad...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B5/30G02F1/1335G02F1/13357
CPCG02F1/133528G02F2203/09G02F1/133555G02F1/13362G02F2001/133565G02F1/133565G02F1/1335
Inventor 饭岛千代明
Owner BOE TECH GRP CO LTD