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Negative photosensitive resin composition and negative photosensitive element

A technology of photosensitive resin and composition, which is applied in optics, optomechanical equipment, nonlinear optics, etc., and can solve problems such as uneven display, large deviation of film thickness, and inconvenient operation

Inactive Publication Date: 2006-08-23
HITACHI CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In particular, regarding the uniformity of film thickness, there is a problem that the variation of film thickness within the same substrate becomes large due to factors such as weak vibration of the substrate to be laminated, slight deformation of the substrate during lamination, and ambient air flow during lamination.
The film thickness variation of the resin composition layer is related to the height variation of the liquid crystal alignment control protrusions, which causes display unevenness
In addition, the positive resin composition is generally liquid, and it is inconvenient to handle when it is used and stored.

Method used

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  • Negative photosensitive resin composition and negative photosensitive element
  • Negative photosensitive resin composition and negative photosensitive element
  • Negative photosensitive resin composition and negative photosensitive element

Examples

Experimental program
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Effect test

Embodiment 1

[0068] [Negative photosensitive resin composition in which the monofunctional reactive monomer accounts for 50% or more of the total mass fraction of the reactive monomer]

[0069] Prepare a negative photosensitive resin composition with the composition shown in Table 1, apply it on a glass substrate (3cm×3cm, thickness 0.5mm) by spin coating, and dry it for 3 minutes using a hot air convection dryer at 110°C , form a negative photosensitive resin composition layer (thick 4 μm), make a glass substrate, a laminate of negative photosensitive resin composition layers ( figure 1 ). On the above laminated substrate, a photomask was provided across a space of 100 μm on the side of the negative photosensitive resin composition layer. From the photomask side, it is irradiated with 100mJ / cm with a 3kW ultra-high pressure mercury lamp (HMW-590, manufactured by O-ku Seisakusho Co., Ltd.) 2 UV rays ( figure 2 ). After the ultraviolet exposure, the laminate was subjected to jet develo...

Embodiment 2

[0071] On a polyethylene terephthalate film (support) with a thickness of 50 μm using a die coating method, the negative-type photosensitive resin composition of Example 1 is coated with a film thickness of 4 μm when dried, and is coated with 110 μm. After drying in a hot air convection dryer at ℃ for 3 minutes, cover it with a 30 μm thick polypropylene film as a cover film to make a negative photosensitive element. While peeling off the polypropylene film of the obtained negative photosensitive element, the negative photosensitive resin composition layer is pasted and bonded (layer) with the conditions of 130° C. of roll temperature, 1500 N / m of roll line pressure, and 1.0 m / min of speed. press) on a glass substrate (3 cm x 3 cm, thickness 0.5 mm) to prepare a laminated substrate of a glass substrate, a negative photosensitive resin composition layer, and a support. The support body of the above-mentioned substrate was peeled off, and exposure, development, and curing were pe...

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Abstract

An object of the present invention is to provide a negative photosensitive resin composition, which is capable of forming projections for controlling liquid crystal alignment that exhibit a higher level of precision than that attained by projections formed mug a positive photosensitive resin composition, as well as a photosensitive element that uses the above negative photosensitive resin composition, which can be used in a transfer method (laminate system), is easily stored, can be used with no wastage, and exhibits excellent film thickness stability. The present invention relates to a negative photosensitive resin composition comprising an alkali-soluble resin (a), a reactive monomer (b), and a photoreaction initiator (c), wherein 50% or more of the total mass of the blended reactive monomer (b) is a monofunctional reactive monomer, and a negative photosensitive element comprising a negative photosensitive resin composition layer that uses the negative photosensitive resin composition positioned on top of a support.

Description

technical field [0001] The present invention relates to a negative-type photosensitive resin composition, a negative-type photosensitive element, a protrusion having a curved surface using them, or a method for producing a protrusion for controlling liquid crystal alignment, a protrusion for controlling liquid crystal alignment obtained by the production method, and a protrusion having the above-mentioned liquid crystal alignment. A substrate for controlling protrusions and a liquid crystal panel constructed using the substrate. Background technique [0002] With the same image quality as CRT (Cathode Ray Tube-cathode ray tube), liquid crystal display (hereinafter referred to as LCD) with the characteristics of thinness and light weight is regarded as an image display replacing CRT, and it is assembled into personal In addition to OA (office automation) equipment such as computers, the market is expected to further expand among many consumer equipment and household electrica...

Claims

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Application Information

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IPC IPC(8): G03F7/027G02F1/1337
Inventor 山田直毅斋藤学田钟裕之山崎宏
Owner HITACHI CHEM CO LTD