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Liquid crystal display panel

A liquid crystal display panel, liquid crystal technology, applied in static indicators, visual time indicating devices, electronic timers, etc. The effect of maintaining viewability and good viewability

Inactive Publication Date: 2003-07-09
CITIZEN WATCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For this reason, most of the light emitted from the light source is wasted
[0010] Therefore, in order to perform a highly recognizable display, it is necessary to increase the amount of light emitted by the light source, which increases power consumption, and in the case of portable electronic devices, there is a problem of battery life.
[0011] In addition, in a display panel that only digitally displays time information or calendar information by displaying white on a black ground, there is no change in the pattern and lack of interest, which annoys consumers and sharply reduces the consumption of digital display clocks.
[0012] In addition, combined clocks are not popular yet, and analog display clocks using liquid crystal display panels are not yet popular.
[0013] The same is true for liquid crystal display panels of other electronic equipment. In the case of transmissive display generated by built-in light sources, various information composed of text or images is usually displayed in white on a black ground. Although there are electronic machines that can display black and white inversion in reverse mode, they still lack variety and lack of interest

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] [Example 1: Figure 1 to Figure 5 ]

[0032] First of all, refer to Figure 1 to Figure 5 The first embodiment of the liquid crystal display panel of the present invention will be described.

[0033] figure 1 It is a schematic cross-sectional view of the structure of the liquid crystal display panel. figure 2 It is an enlarged cross-sectional view showing the structure of the liquid crystal cell, and a cut in the middle of the left-right direction is omitted in the figure. image 3 The plan view shows an example of the display character segment pattern of the liquid crystal cell.

[0034] Shown in figure 1 The liquid crystal display panel 10 consists of a liquid crystal cell 1, a first polarizer 2 arranged on the viewing side of the observer (upper side in the figure), and arranged on the side opposite to the viewing side of the liquid crystal cell 1 (lower side in the figure). ) Is composed of a second polarizing plate 3 and a light source 4 arranged on the opposite si...

Embodiment 2 to Embodiment 6

[0057] [Example 2 to Example 6: Figure 6 to Figure 10 ]

[0058] Secondly, refer to Figure 6 to Figure 10 Examples 2 to 6 of the liquid crystal display panel of the present invention will be described.

[0059] Figure 6 to Figure 10 Are all with figure 1 The same schematic cross-sectional views, which show the composition of different embodiments of the liquid crystal display panel of the present invention, and figure 1 The same parts are given the same reference numerals and the description is omitted.

[0060] In addition, for each of the following embodiments, the configuration and function other than the points to be described individually are the same as the liquid crystal display panel of the first embodiment described above.

Embodiment 2

[0062] Figure 6 The configuration of the second embodiment of the liquid crystal display panel of the present invention is shown.

[0063] The LCD panel and figure 1 Like the liquid crystal display panel 10, the liquid crystal cell 1 is sandwiched between the reflective polarizer, the first polarizer 2 and the absorptive polarizer, the second polarizer 3, and the second polarizer 3 and the liquid crystal cell 1 The light source 4 is set on the opposite side.

[0064] In this liquid crystal display panel, an absorptive polarizer that has been subjected to a non-reflective treatment on the surface of the first polarizer is disposed on the viewing side of the first polarizer as a non-reflective layer.

[0065] The first polarizer 2, that is, the reflective polarizer, has a characteristic of reflecting linearly polarized light having a vibration plane perpendicular to the easy transmission axis. to this end, figure 1 The liquid crystal display panel, in a place where the outside l...

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PUM

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Abstract

A liquid crystal display panel comprising a first polarizer disposed on the viewed side of a liquid crystal cell holding a liquid crystal between two transparent substrates each provided with an electrode on the opposite inner surface thereof, a second polarizer disposed on the opposite side of the liquid crystal cell, and a light source disposed on the opposite side of the second polarizing plate. The first polarizer is a reflection polarizer reflecting a linearly polarized light having a plane of vibration perpendicular to the axis of easy transmission, whereas the second polarizer is an absorption polarizer or a color polarizer absorbing the linearly polarized light. A translucent reflector and / or a color filter may be disposed between the second polarizer and the light source.

Description

Technical field [0001] The present invention relates to a liquid crystal display panel for displaying time information, calendar information, and other various information in various electronic devices such as clocks and portable information devices. Background technique [0002] A liquid crystal display panel (device) digitally displays time information such as hours, minutes, and seconds, and timepieces with calendar information such as date, day of the week, month, and year have been widely used in watches and desk clocks equipped with quartz oscillation circuits. [0003] In addition, there is also a combined timepiece that combines an analog display that displays time information with hands and a digital display that displays time information and calendar information in numbers and letters. [0004] In addition, people have also proposed (for example, see Japanese Patent Laid-Open No. 54-153066) an analog clock, which sometimes uses a liquid crystal display panel to form a t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/1335G04G9/00
CPCG04G9/0035G02F1/133536G02F1/133533G02F2001/133545G02F1/133545G02F1/1335
Inventor 星野浩一
Owner CITIZEN WATCH CO LTD