JP2872321B2 - Liquid crystal display device - Google Patents
Liquid crystal display deviceInfo
- Publication number
- JP2872321B2 JP2872321B2 JP613790A JP613790A JP2872321B2 JP 2872321 B2 JP2872321 B2 JP 2872321B2 JP 613790 A JP613790 A JP 613790A JP 613790 A JP613790 A JP 613790A JP 2872321 B2 JP2872321 B2 JP 2872321B2
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- electrode
- crystal display
- sealing
- sealing material
- 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.)
- Expired - Lifetime
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
- G02F1/1343—Electrodes
- G02F1/134309—Electrodes characterised by their geometrical arrangement
- G02F1/134336—Matrix
-
- 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
- G02F1/1339—Gaskets; Spacers; Sealing of cells
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Liquid Crystal (AREA)
- Geometry (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)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は液晶表示素子に係り、特にドツトマトリツク
スタイプの液晶表示素子に関する。Description: TECHNICAL FIELD The present invention relates to a liquid crystal display device, and more particularly to a liquid crystal display device of a dot matrix type.
大型の液晶表示素子として、通常、ドツトマトリツク
スタイプのものが使用されている。As a large-sized liquid crystal display element, a liquid crystal display element of a tomato matrix type is generally used.
従来、かかるタイプの液晶表示素子は、第２図に示す
ような構造よりなつている。即ち、上側電極基板１及び
下側電極基板２には、それぞれストライプ状に配列され
たセグメント電極３及びコモン電極４が形成されてい
る。そこで、両電極基板１、２とを両電極３、４が互い
にその配列方向が交又するように対向させ、周囲をシー
ル材５でシールし、内部に液晶６、通常、正の誘電率異
方性を有するネマチツク液晶を封入口７より封入し、該
封入口７を封止材８で封止する。そして、両電極基板
１、２の外側にそれぞれ偏光板９、10をその偏光軸が互
いに交又または平行になるように配設する。Conventionally, this type of liquid crystal display element has a structure as shown in FIG. That is, the upper electrode substrate 1 and the lower electrode substrate 2 are formed with the segment electrodes 3 and the common electrodes 4 arranged in stripes, respectively. Therefore, the two electrode substrates 1 and 2 are opposed to each other so that the arrangement directions of the two electrodes 3 and 4 cross each other, the periphery thereof is sealed with a sealing material 5, and the liquid crystal 6, usually having a positive dielectric constant Anisotropic nematic liquid crystal is sealed through the sealing port 7, and the sealing port 7 is sealed with a sealing material 8. Then, polarizing plates 9 and 10 are disposed outside the two electrode substrates 1 and 2 such that their polarization axes cross each other or become parallel to each other.
このように形成された液晶表示素子は、両電極３、４
の交点部の液晶を点灯または非点灯するように選択され
た両電極３、４に電圧が印加される。なお、この種の液
晶表示素子として、例えば特公昭51−13666号公報があ
げられる。The liquid crystal display element thus formed has two electrodes 3, 4
A voltage is applied to both electrodes 3 and 4 selected to turn on or off the liquid crystal at the intersection of. As this type of liquid crystal display device, for example, Japanese Patent Publication No. 51-13666 can be mentioned.
上記従来技術は、コモン電極４に信号を与える端子側
11のシール材５の下にはコモン電極４が形成されている
が、液晶６を封入する封入口７の側12のシール材５の下
にはコモン電極４が形成されていない。このため、端子
側11と封入口側12とでギヤツプ差があり、表示の色む
ら、閾値むらが発生し、またシール材５の接着力が不安
定であるという問題があつた。また、表示部とシール部
との間に生じるギャップむらを解消するため、電圧の印
加されないダミー電極を設ける技術を開示したものが、
例えば、特開昭62−229234号や特開昭63−266427号公報
があるが、そのダミー電極は複数のセグメント電極（あ
るいはコモン電極）と対向するように位置するため、各
セグメント電極等に異なる電圧が加えられることによる
誘電作用により、前述の従来技術とは異なる原因による
表示むらが生じることになる。The above-mentioned prior art is based on a terminal side for supplying a signal to the common electrode 4.
Although the common electrode 4 is formed below the seal material 11, the common electrode 4 is not formed below the seal material 5 on the side 12 of the sealing port 7 for sealing the liquid crystal 6. For this reason, there is a gap between the terminal side 11 and the sealing port side 12, which causes uneven display color and uneven threshold, and has a problem that the adhesive force of the sealing material 5 is unstable. Further, in order to eliminate gap unevenness generated between the display unit and the seal unit, there is disclosed a technology of providing a dummy electrode to which no voltage is applied,
For example, Japanese Patent Application Laid-Open Nos. 62-229234 and 63-266427 disclose a dummy electrode which is located so as to face a plurality of segment electrodes (or common electrodes). The dielectric action caused by the application of the voltage causes display unevenness due to a cause different from that of the above-described conventional technology.
本発明の目的は、色むら、閾値むら及びシール材の接
着力の不安定をなくし、均一な表示が得られる液晶表示
素子を提供することにある。SUMMARY OF THE INVENTION An object of the present invention is to provide a liquid crystal display element which can eliminate color unevenness, threshold unevenness, and instability of the adhesive force of a sealing material and can obtain a uniform display.
上記目的は、封入口側のシール材に対応した部分にダ
ミー用電極を形成することにより達成される。The above object is achieved by forming a dummy electrode in a portion corresponding to a sealing material on the sealing port side.
封入口側にも端子側と同様に電極を形成することによ
り、端子側と封入口側とのギヤツプ差がなくなる。この
ため、端子側と封入口側での色むら、閾値むらがなくな
り、均一な表示が可能となる。またギヤツプ差がないの
で、両電極基板をシールしているシール材の接着力も安
定する。By forming an electrode on the sealing port side in the same manner as the terminal side, a gap difference between the terminal side and the sealing port side is eliminated. Therefore, color unevenness and threshold value unevenness on the terminal side and the sealing port side are eliminated, and uniform display is possible. Also, since there is no gap difference, the adhesive force of the sealing material sealing both electrode substrates is also stabilized.
以下、本発明の一実施例を第１図により説明する。な
お、第２図と同じまたは相当部材には同一符号を付し、
その説明を省略する。下側電極基板２には、コモン電極
４の他に、封入口側12のシール材５に対応した部分にも
ダミー用電極13が前記コモン電極４に接続しないで形成
されている。Hereinafter, an embodiment of the present invention will be described with reference to FIG. Note that the same or equivalent members as those in FIG.
The description is omitted. On the lower electrode substrate 2, in addition to the common electrode 4, a dummy electrode 13 is formed not to be connected to the common electrode 4 at a portion corresponding to the sealing material 5 on the sealing port side 12.
そこで、前記のようにコモン電極４とダミー用電極13
とが形成された下側電極２と従来と同様に形成された上
電極基板１とを従来と同様の手法によつて液状表示素子
を組立る。Therefore, as described above, the common electrode 4 and the dummy electrode 13 are used.
A liquid display element is assembled from the lower electrode 2 having the above structure and the upper electrode substrate 1 formed in the same manner as in the prior art by the same method as in the related art.
このように、端子側11のシール材５の下にはコモン電
極４が形成され、封入口側12の下にもダミー用電極13が
形成されているので、端子側11と封入口側12とでギヤツ
プを均一に保つことができる。As described above, the common electrode 4 is formed below the sealing material 5 on the terminal side 11 and the dummy electrode 13 is also formed below the sealing port side 12. Can keep the gap uniform.
また本実施例に示すように、ダミー用電極13をコモン
電極４と接続しないことにより、コモン電極４に与えら
れる信号に悪影響を与えることがない。Further, as shown in the present embodiment, the signal applied to the common electrode 4 is not adversely affected by not connecting the dummy electrode 13 to the common electrode 4.
本発明によれば、封入口側のシール材の下にダミー用
電極を形成してなるので、液晶表示素子のギヤツプを均
一に保つことができ、ギヤツプ差による色むら、閾値む
らが防止されて均一な表示が可能となる。またギヤツプ
差がないので、シール材の接着力も安定する。According to the present invention, since the dummy electrode is formed below the sealing material on the sealing port side, the gap of the liquid crystal display element can be kept uniform, and color unevenness and threshold unevenness due to the gap difference are prevented. Uniform display becomes possible. Also, since there is no gap difference, the adhesive strength of the sealing material is stabilized.
第１図は本発明の一実施例を示し、（ａ）は正面図、
（ｂ）は断面図、第２図は従来例を示し、（ａ）は正面
図、（ｂ）は断面図である。 １……上側電極基板、２……下側電極基板、 ３……セグメント電極、４……コモン電極、 ５……シール材、６……液晶、７……封入口、 ８……封止材、12……封入口側、 13……ダミー用電極。FIG. 1 shows an embodiment of the present invention, (a) is a front view,
(B) is a cross-sectional view, FIG. 2 shows a conventional example, (a) is a front view, and (b) is a cross-sectional view. DESCRIPTION OF SYMBOLS 1 ... Upper electrode substrate, 2 ... Lower electrode substrate, 3 ... Segment electrode, 4 ... Common electrode, 5 ... Sealing material, 6 ... Liquid crystal, 7 ... Enclosure, 8 ... Sealing material , 12… Enclosed port side, 13… Dummy electrode.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭60−166928（ＪＰ，Ａ) 特開 昭62−245220（ＪＰ，Ａ) 特開 昭63−20631（ＪＰ，Ａ) 特開 平１−271725（ＪＰ，Ａ) 特開 昭63−118719（ＪＰ，Ａ) 特開 昭62−229234（ＪＰ，Ａ) 特開 昭63−266427（ＪＰ，Ａ) (58)調査した分野(Int.Cl.6，ＤＢ名) G02F 1/1341 G02F 1/1345 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-60-1666928 (JP, A) JP-A-62-245220 (JP, A) JP-A-63-206301 (JP, A) JP-A-1- 271725 (JP, A) JP-A-63-118719 (JP, A) JP-A-62-229234 (JP, A) JP-A-63-266427 (JP, A) (58) Fields investigated (Int. 6 , DB name) G02F 1/1341 G02F 1/1345
Claims (1)
極と複数の第２の電極のそれぞれの配列方向が互いに交
差し、交差部分に電圧が印加されるように対向して２枚
の電極基板を配設して周囲をシール材でシールし、該シ
ール材の封入口から内部に液晶を封入してなる液相表示
素子において、上記第１の電極が設けられた基板上の上
記封入口側のシール材に対応する部分に、上記第１の電
極の配列方向に平行に、かつ、上記シール材と交差する
ように上記第１の電極と分離された複数のダミー用電極
が形成されていることを特徴とする液晶表示素子。An arrangement direction of a plurality of first electrodes and a plurality of second electrodes arranged in a stripe shape cross each other, and are opposed to each other so that a voltage is applied to the intersection. An electrode substrate is provided, the periphery thereof is sealed with a sealing material, and a liquid crystal is sealed inside the sealing material through a sealing opening. In the liquid phase display element, the sealing on the substrate on which the first electrode is provided is provided. A plurality of dummy electrodes separated from the first electrode so as to be parallel to the arrangement direction of the first electrodes and to intersect with the seal material are formed in a portion corresponding to the sealing material on the entrance side. A liquid crystal display device, comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP613790A JP2872321B2 (en) | 1990-01-17 | 1990-01-17 | Liquid crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP613790A JP2872321B2 (en) | 1990-01-17 | 1990-01-17 | Liquid crystal display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03211524A JPH03211524A (en) | 1991-09-17 |
| JP2872321B2 true JP2872321B2 (en) | 1999-03-17 |
Family
ID=11630119
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP613790A Expired - Lifetime JP2872321B2 (en) | 1990-01-17 | 1990-01-17 | Liquid crystal display device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2872321B2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0536427U (en) * | 1991-10-18 | 1993-05-18 | 矢崎総業株式会社 | Chip-on-glass liquid crystal display device |
| JPH05203966A (en) * | 1992-01-29 | 1993-08-13 | Seiko Instr Inc | Color liquid crystal electrooptical device |
| EP1022603B1 (en) * | 1992-02-27 | 2005-02-02 | Canon Kabushiki Kaisha | Liquid crystal display device |
| JP3086606B2 (en) * | 1994-11-14 | 2000-09-11 | シャープ株式会社 | Liquid crystal display |
| US5936694A (en) * | 1995-04-26 | 1999-08-10 | Canon Kabushiki Kaisha | Liquid crystal device and process for producing same |
-
1990
- 1990-01-17 JP JP613790A patent/JP2872321B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03211524A (en) | 1991-09-17 |
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