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Liquid crystal display device and method for producing the same

A technology of a liquid crystal display device and a manufacturing method, which are applied in the directions of optics, instruments, nonlinear optics, etc., can solve the problems of long application period, accumulation, migration of ionic impurities, etc.

Inactive Publication Date: 2012-01-04
SHARP KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] However, it is known that liquid crystal materials are decomposed by ultraviolet rays, and the characteristics are deteriorated due to the generated ionic impurities.
In particular, it is known that the liquid crystals used in the PDLC method and the PNLC method are weak to ultraviolet light.
In addition, in the drive at 1 Hz, the period of applying the voltage of the same polarity becomes longer than that of the conventional 60 Hz drive, and ionic impurities tend to move and accumulate on the interface between the liquid crystal and the alignment film. As a result, Generation of flicker due to reduction of effective voltage applied to the liquid crystal layer

Method used

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  • Liquid crystal display device and method for producing the same
  • Liquid crystal display device and method for producing the same
  • Liquid crystal display device and method for producing the same

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Embodiment

[0057] Hereinafter, the present invention will be described in detail based on examples.

[0058] As the first insulating substrate, a glass substrate having a thickness of 0.7 mm was used. Figure 5 A plan view showing a pixel circuit used in this example. A portion surrounded by VLAs (pixel voltage supply lines in the same phase as the counter electrode) 31 formed in parallel in the vertical and horizontal directions constitutes one sub-pixel. In each sub-pixel, 2 static RAMs are formed by 12 TFT elements 3 . In this embodiment, the TFT element 3 and the wiring are formed on substantially the entire surface of the sub-pixel. Vdd33 and Vss34 are wirings for supplying power for static RAM. GL35 and GLB36 are ground potential wiring. SL37 is a wiring for supplying a pixel signal, and the reflective electrode is connected to VLA31 or VLB (pixel voltage supply line having a phase opposite to that of the counter electrode) 32 according to the signal of SL37. When connected to...

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Abstract

An ultraviolet-absorbing layer is provided between an insulating substrate and a transparent electrode, the ultraviolet-absorbing layer having a transmittance ratio (T (365 nm) / T (315 nm)) of not less than 6.3 where (T (365 nm)) is a transmittance at a wavelength of 365 nm and (T (315 nm)) is a transmittance at a wavelength of 315 nm.

Description

technical field [0001] The present invention relates to a liquid crystal display device and a method of manufacturing the same. Background technique [0002] In recent years, reflective display devices utilizing ambient light do not require a backlight, and thus have features such as low power consumption, thinness, and lightness, and have attracted attention in particular as display devices for cellular phones, e-books, and the like. [0003] Among the reflection type display devices, a reflection type liquid crystal display device is widely used. There are modes of reflection type liquid crystal display devices that achieve a good black display by using a polarizing plate and a liquid crystal layer that controls the polarization state of passing light, and a mode that does not use a polarizing plate, by using liquid crystal that controls the scattering state of passing light layer to achieve a good white display. [0004] Among the systems that do not use a polarizing pl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/1343G02F1/1334G02F1/1335G02F1/1368
CPCG02F1/133509G02F1/1334G02F2201/086Y10T29/49002
Inventor 浅冈康箕浦洁佐藤英次出口和广藤原小百合宫本健治
Owner SHARP KK