Check patentability & draft patents in minutes with Patsnap Eureka AI!

Optical sheet, back-light device and liquid crystal display device

A liquid crystal display panel, optical sheet technology, applied in optics, optical elements, nonlinear optics, etc., can solve the problems of unable to obtain brightness enhancement, unable to effectively use light beams, etc., to achieve the effect of preventing deformation

Active Publication Date: 2011-10-05
SONY CORP
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] However, depending on the characteristics of the diffusion film, disposing the diffusion film between the lens film and the liquid crystal panel sometimes cannot achieve a desired level of brightness enhancement because the light beams collected by the prism cannot be effectively used

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Optical sheet, back-light device and liquid crystal display device
  • Optical sheet, back-light device and liquid crystal display device
  • Optical sheet, back-light device and liquid crystal display device

Examples

Experimental program
Comparison scheme
Effect test

example 1-1

[0053] figure 1 is a cross-sectional view schematically showing an exemplary configuration of a liquid crystal display device 10 according to an embodiment of the present invention. First, the configuration of the liquid crystal display device 10 will be schematically explained.

[0054] Such as figure 1 As shown, the liquid crystal display device 10 has a backlight unit 1 and a liquid crystal display panel 2 . The backlight unit 1 shown as a direct type backlight in this example may be an edge type.

[0055] Such as figure 1 As shown, the backlight unit 1 is used to provide adjusted light to the liquid crystal display panel 2 , and the backlight unit is directly disposed adjacent to the back of the liquid crystal display panel 2 . The liquid crystal display panel 2 displays information thereon by modulating the light supplied from the backlight unit 1 in a time-dependent and spatially-dependent manner. The liquid crystal display panel 2 has polarizing plates 2a, 2b re...

example 1-2

[0090] Figure 5 Examples 1-2 of the invention are shown. It should be noted that any components corresponding to those described in the first embodiment above will be given the same reference numerals to avoid duplication of description.

[0091] In general, resin materials such as polycarbonate cause yellowing when exposed to excessive ultraviolet rays. Due to this coloring of the flakes, the light passing therethrough in this case can no longer maintain the desired light transmission properties. More specifically, when the yellowing of the sheet becomes serious, the blue wavelength component in the transmitted light is reduced, and thus, the image displayed on the liquid crystal display panel 2 is yellowed.

[0092] Therefore, in this embodiment, an ultraviolet absorber is added to at least one or both of the first sheet base 21 and the second sheet base 22 constituting the base 14B of the light-condensing sheet 14 to suppress the emission of the above-mentioned light-con...

example 1-3

[0098] Figure 6 Examples 1-3 of the invention are shown. It should be noted that in this figure, components corresponding to any one described in the above-mentioned first embodiment will be given the same reference numerals to avoid duplication of description.

[0099]The condensing sheet 14 of this example has a rough surface 14R on the light beam incident surface side of the condensing sheet 14 (ie, on the surface of the second sheet substrate 22 opposite to the surface facing the first sheet substrate 21 ). By providing the rough surface 14R of the condensing sheet 14 on the light beam incident surface side, the reflectance of light incident from the light source side can be reduced, thereby improving luminance characteristics. Due to the frictional contact with other members, the condensing sheet 14 can be prevented from being scratched on the light beam incident surface side thereof. The rough surface 14R also helps prevent its sticking to other components due to the ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
refractive indexaaaaaaaaaa
Login to View More

Abstract

The present invention provides an optical sheet (14) which includes: a light-transmissive base; and an optical functional layer provided to at least one surface of the base, in which the base is composed of a stack of transmissive sheets bonded while placing an adhesive material layer in between.

Description

[0001] Cross References to Related Applications [0002] This application contains subject-matter of Japanese Patent Applications JP 2006-112387 and JP 2006-112715 filed in the Japan Patent Office on Apr. 14, 2006, the entire contents of which are hereby incorporated by reference. technical field [0003] The invention relates to a light-transmitting optical sheet generally used as a functional film of a liquid crystal display device, and a backlight device and a liquid crystal display device provided with the optical sheet. Background technique [0004] Compared with cathode ray tubes (CRT), liquid crystal display devices (LCD) have great potential for reducing power consumption and being smaller and thinner, and currently, liquid crystal display devices of various sizes are widely used in applications such as mobile phones and digital Cameras are small devices, as well as large LCD TVs. Under such circumstances, liquid crystal display devices are required to further impro...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G02B5/04G02B3/00G02B3/02G02F1/1335G02F1/1333
Inventor 太田荣治安孙子透小田桐广和土井克浩青木诚浅冈聪子须藤美贵余泽中
Owner SONY CORP
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com