JPH0572563A - Liquid crystal display device - Google Patents

Liquid crystal display device

Info

Publication number
JPH0572563A
JPH0572563A JP25984791A JP25984791A JPH0572563A JP H0572563 A JPH0572563 A JP H0572563A JP 25984791 A JP25984791 A JP 25984791A JP 25984791 A JP25984791 A JP 25984791A JP H0572563 A JPH0572563 A JP H0572563A
Authority
JP
Japan
Prior art keywords
transparent conductive
liquid crystal
voltage
display
conductive film
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
JP25984791A
Other languages
Japanese (ja)
Inventor
Satoshi Imai
聡 今井
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.)
Rohm Co Ltd
Original Assignee
Rohm Co Ltd
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 Rohm Co Ltd filed Critical Rohm Co Ltd
Priority to JP25984791A priority Critical patent/JPH0572563A/en
Publication of JPH0572563A publication Critical patent/JPH0572563A/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
    • G02F1/1345—Conductors connecting electrodes to cell terminals

Landscapes

  • Liquid Crystal (AREA)
  • Transforming Electric Information Into Light Information (AREA)

Abstract

PURPOSE:To provide a liquid crystal display device having no display irregularity as the liquid crystal display device which executes display by impressing voltage on liquid crystal. CONSTITUTION:This liquid crystal display device is provided with plural display parts, plural voltage impressing parts and plural transparent conductive films whose width and length are set so that the value of wiring resistance from the voltage impressing part to the display part becomes the same. In such a case, the transparent conductive films 24, 25 and 26 are respectively formed in order to impress the voltage on the display parts 21, 22 and 23 from the voltage impressing parts 27, 28 and 29. At such a time, based on a distance between the voltage impressing part and the display part and the path of the transparent conductive film, each length is calculated to decide the width so that the values of the wiring resistances of the respective conductive films may become the same. The resistance value is made uniform by making the width of the transparent conductive film larger as the length thereof is longer.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明は、透明導電膜を用いて液
晶に電圧を加えることにより表示を行なう液晶表示装置
に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal display device which displays by applying a voltage to liquid crystal using a transparent conductive film.

【０００２】[0002]

【従来の技術】図３に、従来から使用されている液晶表
示装置を示す。ここでは、液晶表示装置10に、透明電極
の表示部11及び12が設けられている。それぞれの表示部
に電圧を印加するための電圧印加部15及び16は、図に示
す位置にあるものとする。表示部11、12に電圧を供給す
るために、電圧印加部15、16と表示部11、12を接続する
透明導電膜13及び14が形成されている。図中、Ｗは透明
導電膜13、14の幅、Ｌ及びＬ’は、それぞれ導電膜13、
14の長さである。従来の液晶表示装置においては、透明
導電膜の長さＬ及びＬ’に関わらず、その幅Ｗは一定で
あった。2. Description of the Related Art FIG. 3 shows a conventional liquid crystal display device. Here, the liquid crystal display device 10 is provided with display portions 11 and 12 of transparent electrodes. It is assumed that the voltage application units 15 and 16 for applying a voltage to the respective display units are in the positions shown in the figure. In order to supply a voltage to the display units 11 and 12, transparent conductive films 13 and 14 that connect the voltage application units 15 and 16 and the display units 11 and 12 are formed. In the figure, W is the width of the transparent conductive films 13 and 14, L and L'are the conductive films 13 and 14, respectively.
It is 14 lengths. In the conventional liquid crystal display device, the width W is constant regardless of the lengths L and L ′ of the transparent conductive film.

【０００３】上述のような、透明導電膜の配線抵抗は、
シート抵抗として算出される。図４に示すようなＬ字型
の透明導電膜17及び18の場合、電流の流れる方向に対し
て、その幅を一辺の長さとする正方形17ａ及び18ａを考
えて、その正方形の数で抵抗値を算出する。即ち、シー
ト抵抗値がｒΩ／□であれば、透明導電膜17では、正方
形が７個で抵抗値は７ｒΩとなり、一方、透明導電膜18
では、正方形が１４個で１４ｒΩとなる。このように、
配線の長さがほぼ同じであっても、幅が異なれば抵抗値
は異なる。また、図３に示す透明導電膜13、14のよう
に、同じ幅で長さが異なれば、やはり抵抗値は異なる。
図３では、電圧の印加場所と表示部の位置によって、電
圧印加部から表示部までの距離が違う。これを接続する
ための透明導電膜13及び14の長さが違い、幅は同じであ
るので、透明導電膜14に比べ、透明導電膜13の方がその
抵抗値が高くなっている。The wiring resistance of the transparent conductive film as described above is
Calculated as sheet resistance. In the case of the L-shaped transparent conductive films 17 and 18 as shown in FIG. 4, considering the squares 17a and 18a whose width is one side with respect to the direction of current flow, the resistance value is determined by the number of the squares. To calculate. That is, if the sheet resistance value is rΩ / □, the transparent conductive film 17 has seven squares and the resistance value is 7 rΩ, while the transparent conductive film 18 is
Then, 14 squares result in 14 rΩ. in this way,
Even if the wiring lengths are almost the same, the resistance values are different if the widths are different. If the transparent conductive films 13 and 14 shown in FIG. 3 have the same width and different lengths, the resistance values also differ.
In FIG. 3, the distance from the voltage applying unit to the display unit differs depending on the voltage application place and the position of the display unit. Since the transparent conductive films 13 and 14 for connecting them have different lengths and the same widths, the transparent conductive film 13 has a higher resistance value than the transparent conductive film 14.

【０００４】[0004]

【発明が解決しようとする課題】図３のように、透明導
電膜の幅を一定にした場合、表示部11と電圧印加部15ま
での透明導電膜13の抵抗値が、表示部12と電圧印加部16
までの透明導電膜14の抵抗値より大きくなってしまう。
これにより、表示部11、12の実際の電圧に差が生じてし
まい、これが表示のムラとなっていた。本発明は、この
ような問題を解決し、表示ムラのない液晶表示装置を提
供することを目的とする。As shown in FIG. 3, when the width of the transparent conductive film is constant, the resistance values of the transparent conductive film 13 up to the display unit 11 and the voltage application unit 15 are the same as those of the display unit 12 and the voltage. Energizer 16
It becomes larger than the resistance value of the transparent conductive film 14 up to.
This causes a difference between the actual voltages of the display units 11 and 12, which causes display unevenness. It is an object of the present invention to solve such problems and provide a liquid crystal display device having no display unevenness.

【０００５】[0005]

【課題を解決するための手段】上記目的を達成するた
め、本発明の液晶表示装置は、液晶に電圧を印加して表
示を行なう液晶表示装置であって、複数の表示部と、複
数の電圧印加部と、前記電圧印加部から前記表示部まで
の配線抵抗値が同一になるように、幅と長さが設定され
た複数の透明導電膜と、を有している。In order to achieve the above object, a liquid crystal display device of the present invention is a liquid crystal display device which applies a voltage to liquid crystal to perform display, and comprises a plurality of display portions and a plurality of voltage sources. It has an applying part and a plurality of transparent conductive films whose width and length are set so that the wiring resistance values from the voltage applying part to the display part are the same.

【０００６】[0006]

【作用】電圧印加部から表示部までの配線抵抗値を同一
にすることで、配線での電圧のロスを一定にすることが
できる。従って、各表示部の実際の印加電圧が同じ値に
なるので、液晶の表示にムラがなくなり、見やすい表示
となる。By adjusting the wiring resistance values from the voltage applying section to the display section to be the same, the voltage loss in the wiring can be made constant. Therefore, since the actual applied voltages to the respective display parts have the same value, there is no unevenness in the liquid crystal display and the display is easy to see.

【０００７】[0007]

【実施例】以下、本発明の実施例を図面を参照しつつ、
説明する。図１に、本発明を実施した液晶表示装置を示
す。液晶表示装置20には、透明電極の表示部21、22及び
23が設けられている。それぞれの表示部に電圧を印加す
るための電圧印加部27、28及び29は、図に示す位置にあ
るものとする。各表示部に電圧を供給するために、電圧
印加部27、28及び29と表示部21、22及び23を接続する透
明導電膜24、25及び26が形成されている。それぞれの透
明導電膜の幅は、Ｗ１、Ｗ２、Ｗ３で示されている。ま
た、透明導電膜24、25、26の長さは、各々Ｌ１、Ｌ２、
Ｌ３であるとする。電圧印加部の位置と表示部の位置が
決まった液晶表示装置の透明導電膜のパターンの設計に
おいては、接続すべき電圧印加部と表示部の位置と導電
膜の経路から、まずその長さが決定される。図１のよう
に、表示部が３個の液晶表示装置の場合、例えば、 Ｌ２＝２／３・Ｌ１ Ｌ３＝１／２・Ｌ１ であるとして、透明導電膜のシート抵抗値はｒΩ／□で
あるとする。このとき、透明導電膜24、25及び26の抵抗
値は、 透明導電膜24 ： ｒ・（Ｌ１／Ｗ１） 透明導電膜25 ： ｒ・（Ｌ２／Ｗ２）＝ｒ・（２Ｌ１／
３Ｗ２） 透明導電膜26 ： ｒ・（Ｌ３／Ｗ３）＝ｒ・（Ｌ１／２
Ｗ３） で表わされ、ここで、抵抗値を同じにするためには、 Ｗ２＝２／３・Ｗ１ Ｗ３＝１／２・Ｗ１ とすればよい。即ち、図に示すように、透明導電膜の長
さが長いものほど、幅を大きくすることで、抵抗値を均
一にすることができる。このような透明導電膜が設けら
れた液晶表示装置においては、電圧印加部より加えられ
た電圧は、透明導電膜を介し表示部に加えられる。この
とき、透明導電膜の配線抵抗値が同じであるので、配線
抵抗による電圧降下が生じたとしても、同じ程度であ
り、表示部に印加される実際の電圧値は各々同じである
ので、表示において、色ムラは生じない。Embodiments of the present invention will now be described with reference to the drawings.
explain. FIG. 1 shows a liquid crystal display device embodying the present invention. The liquid crystal display device 20 includes transparent electrode display portions 21, 22 and
23 are provided. The voltage applying units 27, 28 and 29 for applying a voltage to the respective display units are assumed to be at the positions shown in the figure. Transparent conductive films 24, 25 and 26 are formed to connect the voltage applying units 27, 28 and 29 and the display units 21, 22 and 23 in order to supply a voltage to each display unit. The width of each transparent conductive film is shown by W1, W2, and W3. The lengths of the transparent conductive films 24, 25, 26 are L1, L2,
Let it be L3. In designing the pattern of the transparent conductive film of the liquid crystal display device in which the position of the voltage applying section and the position of the display section are determined, the length is first determined from the position of the voltage applying section and the display section to be connected and the path of the conductive film. It is determined. As shown in FIG. 1, in the case of a liquid crystal display device having three display units, for example, assuming that L2 = 2/3 · L1 L3 = 1/2 · L1, the sheet resistance value of the transparent conductive film is rΩ / □. Suppose there is. At this time, the resistance values of the transparent conductive films 24, 25 and 26 are: transparent conductive film 24: r · (L1 / W1) transparent conductive film 25: r · (L2 / W2) = r · (2L1 /
3W2) Transparent conductive film 26: r · (L3 / W3) = r · (L1 / 2
W3), and in order to make the resistance values the same, W2 = 2/3 · W1 W3 = 1/2 · W1. That is, as shown in the figure, as the length of the transparent conductive film is longer, the width can be increased to make the resistance value uniform. In the liquid crystal display device provided with such a transparent conductive film, the voltage applied from the voltage applying unit is applied to the display unit via the transparent conductive film. At this time, since the wiring resistance value of the transparent conductive film is the same, even if a voltage drop due to the wiring resistance occurs, it is about the same, and the actual voltage value applied to the display unit is the same, In, no color unevenness occurs.

【０００８】本実施例においては、表示部は３個であっ
たが、表示部の個数に限定はなく、いくつでもよい。ま
た、透明導電膜の経路にも、特に限定はない。さらに、
図１において、透明導電膜の幅は、24、25及び26で異な
っていたが、各導電膜については一定であった。しか
し、所望の抵抗値、即ち、他の透明導電膜と同一の抵抗
値が得られるならば、図２に示すように、幅に変化を持
たせてもよい。同図において、電圧印加部32と表示部30
を接続する透明導電膜31の幅は、Ｗ４、Ｗ５、Ｗ６のよ
うに変化している。In this embodiment, the number of display portions is three, but the number of display portions is not limited and any number may be used. Moreover, the path of the transparent conductive film is not particularly limited. further,
In FIG. 1, the width of the transparent conductive film was different at 24, 25 and 26, but was constant for each conductive film. However, if a desired resistance value, that is, the same resistance value as other transparent conductive films can be obtained, the width may be changed as shown in FIG. In the figure, the voltage application section 32 and the display section 30
The width of the transparent conductive film 31 for connecting the lines changes like W4, W5, and W6.

【０００９】尚、本発明の、長さと幅を調整して配線抵
抗を均一にするという方法は、プリントヘッド、プリン
ト基板及びＩＣ等表面配線を用いているものに、適用可
能である。The method of adjusting the length and width of the present invention to make the wiring resistance uniform can be applied to those using surface wiring such as a print head, a printed circuit board and an IC.

【００１０】[0010]

【発明の効果】以上説明したように、本発明によれば、
電圧印加部と表示部を接続する透明導電膜の配線抵抗値
を、その幅と長さを調整することによって均一にするこ
とができる。抵抗値が一定であるので、印加電圧のロス
も一定となり、各表示部の実際の電圧値が一定になる。
これにより、表示も均一になり、ムラのない表示が可能
となる。As described above, according to the present invention,
The wiring resistance value of the transparent conductive film that connects the voltage application section and the display section can be made uniform by adjusting the width and the length thereof. Since the resistance value is constant, the loss of applied voltage is also constant, and the actual voltage value of each display unit is constant.
As a result, the display becomes uniform, and it is possible to display without unevenness.

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

【図１】 本発明を実施した液晶表示装置を示す図。FIG. 1 is a diagram showing a liquid crystal display device embodying the present invention.

【図２】 透明導電膜の幅を変えた例を示す図。FIG. 2 is a diagram showing an example in which the width of a transparent conductive film is changed.

【図３】 従来の液晶表示装置を示す図。FIG. 3 is a diagram showing a conventional liquid crystal display device.

【図４】 シート抵抗を説明するための図。FIG. 4 is a diagram for explaining sheet resistance.

【符号の説明】[Explanation of symbols]

10 液晶表示装置 11 表示部 12 表示部 13 透明導電膜 14 透明導電膜 15 電圧印加部 16 電圧印加部 17 透明導電膜 18 透明導電膜 20 液晶表示装置 21 表示部 22 表示部 23 表示部 24 透明導電膜 25 透明導電膜 26 透明導電膜 27 電圧印加部 28 電圧印加部 29 電圧印加部 30 表示部 31 透明導電膜 32 電圧印加部 10 Liquid crystal display device 11 Display unit 12 Display unit 13 Transparent conductive film 14 Transparent conductive film 15 Voltage applying unit 16 Voltage applying unit 17 Transparent conductive film 18 Transparent conductive film 20 Liquid crystal display device 21 Display unit 22 Display unit 23 Display unit 24 Transparent conductive Film 25 Transparent conductive film 26 Transparent conductive film 27 Voltage applying section 28 Voltage applying section 29 Voltage applying section 30 Display section 31 Transparent conductive film 32 Voltage applying section

Claims (1)

【特許請求の範囲】[Claims] 【請求項１】 液晶に電圧を印加して表示を行なう液晶
表示装置であって、 複数の表示部と、 複数の電圧印加部と、 前記電圧印加部から前記表示部までの配線抵抗値が同一
になるように、幅と長さが設定された複数の透明導電膜
と、を有することを特徴とする液晶表示装置。1. A liquid crystal display device for applying a voltage to liquid crystal to perform display, wherein a plurality of display units, a plurality of voltage application units, and wiring resistance values from the voltage application unit to the display unit are the same. And a plurality of transparent conductive films whose width and length are set so that the liquid crystal display device has the following characteristics.
JP25984791A 1991-09-10 1991-09-10 Liquid crystal display device Pending JPH0572563A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP25984791A JPH0572563A (en) 1991-09-10 1991-09-10 Liquid crystal display device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP25984791A JPH0572563A (en) 1991-09-10 1991-09-10 Liquid crystal display device

Publications (1)

Publication Number Publication Date
JPH0572563A true JPH0572563A (en) 1993-03-26

Family

ID=17339812

Family Applications (1)

Application Number Title Priority Date Filing Date
JP25984791A Pending JPH0572563A (en) 1991-09-10 1991-09-10 Liquid crystal display device

Country Status (1)

Country Link
JP (1) JPH0572563A (en)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6238339U (en) * 1985-08-27 1987-03-06
JPH0876136A (en) * 1994-09-08 1996-03-22 Hitachi Ltd Liquid crystal display device
EP0778440A3 (en) * 1995-12-05 1998-08-26 Matsushita Electric Industrial Co., Ltd. Backlighting device and color display device
US5870163A (en) * 1996-01-31 1999-02-09 Nec Corporation LCD device with connection lines having different resistances
JP2000187451A (en) * 1998-12-22 2000-07-04 Fujitsu Ltd Wiring design method of display device and display device using it
JP2003295218A (en) * 2002-04-04 2003-10-15 Advanced Display Inc Display device
JP2004354961A (en) * 2003-05-28 2004-12-16 Chunghwa Picture Tubes Ltd Electric conduction wire structure for liquid crystal display
EP1533843A2 (en) * 2003-11-20 2005-05-25 Samsung OLED Co., Ltd. Electroluminescence device having lead line with low resistance
EP1793624A2 (en) 2005-11-30 2007-06-06 Samsung SDI Co., Ltd. Electronic display device
US8013348B2 (en) 2006-04-14 2011-09-06 Ricoh Company, Ltd. Semiconductor device with a driver circuit for light emitting diodes
JP2012204365A (en) * 2011-03-23 2012-10-22 Rohm Co Ltd Multi-beam semiconductor laser device
CN103383501A (en) * 2012-05-01 2013-11-06 株式会社日本显示器东 Liquid crystal display device with a built-in touch panel
WO2016095316A1 (en) * 2014-12-19 2016-06-23 深圳市华星光电技术有限公司 Liquid crystal display panel and manufacturing method therefor
KR20170005295A (en) * 2015-07-02 2017-01-12 삼성디스플레이 주식회사 Display device
CN106851915A (en) * 2017-03-03 2017-06-13 丁文兰 A kind of intelligent display building glass and its conducting wire
US9971438B2 (en) 2015-05-13 2018-05-15 Mitsubishi Electric Corporation Planar device, touch screen, and liquid crystal display

Cited By (40)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6238339U (en) * 1985-08-27 1987-03-06
JPH048189Y2 (en) * 1985-08-27 1992-03-02
JPH0876136A (en) * 1994-09-08 1996-03-22 Hitachi Ltd Liquid crystal display device
EP1231501A3 (en) * 1995-12-05 2004-01-21 Matsushita Electric Industrial Co., Ltd. Liquid crystal display device
US5963280A (en) * 1995-12-05 1999-10-05 Matsushita Electric Industrial Co., Ltd. Backlighting device and color display device
US6144424A (en) * 1995-12-05 2000-11-07 Matsushita Electric Industrial Co., Ltd. Backlighting device
EP1231501A2 (en) * 1995-12-05 2002-08-14 Matsushita Electric Industrial Co., Ltd. Liquid crystal display device
EP0778440A3 (en) * 1995-12-05 1998-08-26 Matsushita Electric Industrial Co., Ltd. Backlighting device and color display device
US5870163A (en) * 1996-01-31 1999-02-09 Nec Corporation LCD device with connection lines having different resistances
JP2000187451A (en) * 1998-12-22 2000-07-04 Fujitsu Ltd Wiring design method of display device and display device using it
JP2003295218A (en) * 2002-04-04 2003-10-15 Advanced Display Inc Display device
JP2004354961A (en) * 2003-05-28 2004-12-16 Chunghwa Picture Tubes Ltd Electric conduction wire structure for liquid crystal display
EP1533843A2 (en) * 2003-11-20 2005-05-25 Samsung OLED Co., Ltd. Electroluminescence device having lead line with low resistance
JP2005157353A (en) * 2003-11-20 2005-06-16 Samsung Oled Co Ltd Organic field light emitting element provided with low resistance wiring
EP1533843A3 (en) * 2003-11-20 2008-05-28 Samsung SDI Co., Ltd. Electroluminescence device having lead line with low resistance
EP1793624A2 (en) 2005-11-30 2007-06-06 Samsung SDI Co., Ltd. Electronic display device
JP2007156415A (en) * 2005-11-30 2007-06-21 Samsung Sdi Co Ltd Stereoscopic video display device
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