JPS59149323A - Production of liquid crystal display cell - Google Patents

Production of liquid crystal display cell

Info

Publication number
JPS59149323A
JPS59149323A JP2508783A JP2508783A JPS59149323A JP S59149323 A JPS59149323 A JP S59149323A JP 2508783 A JP2508783 A JP 2508783A JP 2508783 A JP2508783 A JP 2508783A JP S59149323 A JPS59149323 A JP S59149323A
Authority
JP
Japan
Prior art keywords
cell
liquid crystal
resin
sealing
sealing resin
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2508783A
Other languages
Japanese (ja)
Inventor
Tokihiko Shinomiya
時彦 四宮
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sharp Corp
Original Assignee
Sharp Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sharp Corp filed Critical Sharp Corp
Priority to JP2508783A priority Critical patent/JPS59149323A/en
Publication of JPS59149323A publication Critical patent/JPS59149323A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1341—Filling or closing of cells

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Liquid Crystal (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

PURPOSE:To attain a liquid crystal display cell which has a sufficient intra-cell pressure, by using an ultraviolet (UV) ray-hardened resin and sealing the resin at a low temperature after sealing of liquid crystal. CONSTITUTION:A cell to which a UV ray-hardened sealing resin 1 is applied is put in a cooling tank 6 and is cooled to 10-25 deg.C. The sealing resin 1 is allowed to penetrate the cell in accordance with contraction of the liquid crystal. In this case, the degree of penetration is maximum in such degree that the sealing resin does not exceed a resin penetration preventing bank 3. This cooled cell is taken out from the cooling tank 6, and UV rays are irradiated to harden the sealing resin 1 before the temperature of the cell rises, that is, in the state where the cell is cooled still. In case of hardening, it is necessary that the cell except a charging entrance is masked with a UV ray preventing mask 7 to irradiate the cell with a spot of UV rays for the purpose of avoiding the temperature rise in the cell due to irradiation of UV rays.

Description

【発明の詳細な説明】 く技術分野〉 本発明は充分なセル内圧力を持つ液晶表示セルの製造方
法に関するものである。DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to a method for manufacturing a liquid crystal display cell having sufficient internal cell pressure.

〈従来技術〉 液晶表示セルを低温化におくと、ガラス厚の厚いセルや
大型のセルでは、液晶の熱収縮に対してガラスの収縮が
対応できず、セル内に気泡が生じた。また、現在の液晶
表示セルではセル厚を均一にするためスペーサーを使用
しているが、スペーサーを使用しない小型のセルでは、
中央のセル厚が小さめになることが多い。<Prior Art> When a liquid crystal display cell is left at a low temperature, the shrinkage of the glass cannot cope with the thermal contraction of the liquid crystal in thick or large glass cells, and air bubbles are generated within the cell. In addition, current liquid crystal display cells use spacers to make the cell thickness uniform, but small cells that do not use spacers
The center cell thickness is often smaller.

〈発明の目的〉 本発明は液晶封入後の樹脂封止を低温下において行ない
、上述したような従来の欠点を解消することを目的とす
る。<Objective of the Invention> An object of the present invention is to perform resin sealing at a low temperature after liquid crystal encapsulation, and to solve the above-mentioned conventional drawbacks.

〈実施例〉 図面は本発明の一実施例を示す工程図である。<Example> The drawings are process diagrams showing one embodiment of the present invention.

図において、１は封止樹脂、２はシール、３は樹脂侵入
防止用土手、４はセルガラス基板、５はコモン転移部、
６は冷却槽、７はＵＶ（紫外）光防止マスク、８はＵＶ
光照射ランプである。Ａは樹脂塗布工程、Ｂは冷却工程
、ＣはＵ■光照射工、捏を示している。In the figure, 1 is a sealing resin, 2 is a seal, 3 is a bank for preventing resin intrusion, 4 is a cell glass substrate, 5 is a common transition part,
6 is a cooling tank, 7 is a UV (ultraviolet) light prevention mask, and 8 is a UV
It is a light irradiation lamp. A shows the resin coating process, B shows the cooling process, and C shows the U light irradiation process and kneading.

Ａ　樹脂塗布工程二 まず、常温下（例えば２５℃）てＵＶ硬化型の封止樹脂
１を塗布する。A. Resin application step 2 First, a UV-curable sealing resin 1 is applied at room temperature (for example, 25° C.).

Ｂ　冷却工程： 次に、ＵＶ硬化型の封止樹脂１を塗布したセルを冷却槽
６に投入し、１０’Ｃ〜−２５℃まで冷却する。そして
、液晶収縮に伴い封止樹脂１をセル内に侵入させる。こ
の際、侵入度は樹脂侵入防止用土手３を越えない程度で
最大に侵入させるよう、浴部温度または／′および冷却
時間を調節する。B Cooling Step: Next, the cell coated with the UV-curable sealing resin 1 is placed in the cooling tank 6 and cooled to 10'C to -25C. Then, the sealing resin 1 is allowed to enter the cell as the liquid crystal shrinks. At this time, the bath temperature or /' and the cooling time are adjusted so that the degree of penetration is the maximum without exceeding the bank 3 for preventing resin penetration.

ｃ　　ｕｖ光照則： 冷却したセルを冷却槽６から取出し、温度が上がらない
うちに、すなわち、冷却状態のままでＵＶ光を照射して
封止樹脂１を硬化させる。硬化させる際には、ＵＶ光照
射によるセル内の温度上昇をさけるため、必ずＵＶ光防
止マスク７により注入口以外をマスキングし、ＵＶ光を
スポット的に当てる必要がある。c uv light illumination rule: The cooled cell is taken out from the cooling bath 6, and the sealing resin 1 is cured by irradiating it with UV light before the temperature rises, that is, while it is still in the cooled state. When curing, in order to avoid temperature rise inside the cell due to UV light irradiation, it is necessary to mask areas other than the injection port with a UV light prevention mask 7 and apply UV light in spots.

」二記において、ＵＶ硬化型の封止樹脂１を用いたこと
は、硬化温度に左右されず、セルが冷却状態で即座に剣
山できる特徴があり、ＵＶ光防止マスク７の作用で、セ
ル内の温度がＵＶ光のエネルギーで急上昇するのを防ぎ
、目的とするセル内圧力を有するセルを得るのに効果的
な働きをしている。2, the use of the UV-curable sealing resin 1 has the feature that it is not affected by the curing temperature, and the cell can be immediately sealed in a cooled state. It works effectively to prevent the temperature of the cell from rising rapidly due to the energy of UV light and to obtain a cell having the desired internal pressure.

なお、高温下におけるセル内の圧力の増加に対する信頼
性であるが、１１０’０．２４０時間のエージングにお
いて、問題はなかった。また前述のように封止温度で封
止樹脂１のセル内への侵入度を調節できるが、商品性を
考えると一２５℃以下では侵入度が大きいのでむずかし
い。また、低温気泡の対策としての効果が出るためには
、１０℃以下にするのが望ましいが、セル形状により若
干条件が異なってくる。As for reliability with respect to increase in pressure inside the cell at high temperatures, there were no problems during aging of 110' for 0.240 hours. Further, as described above, the degree of penetration of the sealing resin 1 into the cell can be adjusted by adjusting the sealing temperature, but from a commercial standpoint, it is difficult to do so because the degree of penetration is large below -25°C. Further, in order to be effective as a countermeasure against low-temperature bubbles, it is desirable to keep the temperature at 10° C. or lower, but the conditions differ slightly depending on the cell shape.

〈発明の効果〉 以上のように本発明は、ＵＶ硬化型の樹脂を用いて、液
晶封入後の樹脂封止を低温下において行なうものであり
、気泡が発生しない、低温で正常なセル内圧力をもつ液
晶表示セルや、常温時セル内圧力が高くセル厚を比較的
均一にできる有用な液晶表示セルが提供できる。<Effects of the Invention> As described above, the present invention uses a UV-curable resin to perform resin sealing after liquid crystal encapsulation at low temperatures, and maintains normal cell internal pressure at low temperatures without generating bubbles. It is possible to provide a liquid crystal display cell having a high pressure inside the cell at room temperature and a useful liquid crystal display cell having a relatively uniform cell thickness.

【図面の簡単な説明】[Brief explanation of drawings]

図面は本発明の一実施例を示す工程図である。 ４、＞＋、・封止樹脂、６・・・冷却槽、７・・・ＵＶ
光防止マ（ぐ スフ、８・・・Ｕｖ光照射ランプ。The drawings are process diagrams showing one embodiment of the present invention. 4, >+, Sealing resin, 6... Cooling tank, 7... UV
Light prevention lamp (gusuf, 8...Uv light irradiation lamp).

Claims (1)

【特許請求の範囲】[Claims] １　液晶封入後の樹脂封止において、常温下でＵＶ硬化
型の制止樹脂を塗布し、冷却による液晶収縮によって前
記封止樹脂をセル内に侵入さぜ、前記封止樹脂がセル内
に侵入した状態でＵＶ光をスポット的に当て前記封止樹
脂を硬化させてなることを特徴とする液晶表示セルの製
造方法。1. In resin sealing after liquid crystal encapsulation, a UV-curable blocking resin was applied at room temperature, and the liquid crystal contracted due to cooling, causing the sealing resin to enter the cell. A method for manufacturing a liquid crystal display cell, comprising curing the sealing resin by spot-wise irradiating the sealing resin with UV light.
JP2508783A 1983-02-16 1983-02-16 Production of liquid crystal display cell Pending JPS59149323A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2508783A JPS59149323A (en) 1983-02-16 1983-02-16 Production of liquid crystal display cell

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2508783A JPS59149323A (en) 1983-02-16 1983-02-16 Production of liquid crystal display cell

Publications (1)

Publication Number Publication Date
JPS59149323A true JPS59149323A (en) 1984-08-27

Family

ID=12156138

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2508783A Pending JPS59149323A (en) 1983-02-16 1983-02-16 Production of liquid crystal display cell

Country Status (1)

Country Link
JP (1) JPS59149323A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62231929A (en) * 1986-04-02 1987-10-12 Stanley Electric Co Ltd Manufacture of liquid crystal display element
JPH01100514A (en) * 1987-10-13 1989-04-18 Semiconductor Energy Lab Co Ltd Manufacture of liquid crystal electrooptic device
JPH01102522A (en) * 1987-10-16 1989-04-20 Stanley Electric Co Ltd Manufacture of liquid crystal cell
EP0930524A1 (en) * 1998-01-20 1999-07-21 Nec Corporation Apparatus for filling up a liquid crystal injection hole in a liquid crystal display cell and a method of doing the same

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5762028A (en) * 1980-10-01 1982-04-14 Hitachi Ltd Manufacture of liquid crystal display element

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5762028A (en) * 1980-10-01 1982-04-14 Hitachi Ltd Manufacture of liquid crystal display element

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62231929A (en) * 1986-04-02 1987-10-12 Stanley Electric Co Ltd Manufacture of liquid crystal display element
JPH01100514A (en) * 1987-10-13 1989-04-18 Semiconductor Energy Lab Co Ltd Manufacture of liquid crystal electrooptic device
JPH01102522A (en) * 1987-10-16 1989-04-20 Stanley Electric Co Ltd Manufacture of liquid crystal cell
EP0930524A1 (en) * 1998-01-20 1999-07-21 Nec Corporation Apparatus for filling up a liquid crystal injection hole in a liquid crystal display cell and a method of doing the same
US6151097A (en) * 1998-01-20 2000-11-21 Nec Corporation Apparatus for filling up a liquid crystal injection hole in a LCD cell and method of doing the same having a detector of resin location in an injection hole

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