KR960015987B1 - Liquid crystal display device - Google Patents

Liquid crystal display device Download PDF

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KR960015987B1
KR960015987B1 KR1019890003128A KR890003128A KR960015987B1 KR 960015987 B1 KR960015987 B1 KR 960015987B1 KR 1019890003128 A KR1019890003128 A KR 1019890003128A KR 890003128 A KR890003128 A KR 890003128A KR 960015987 B1 KR960015987 B1 KR 960015987B1
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South Korea
Prior art keywords
liquid crystal
crystal display
substrate
terminal
display device
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KR1019890003128A
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Korean (ko)
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KR890015052A (en
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켄 사이또
도시미쯔 마쯔도
다까오 히가시
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가부시기가이샤 히다찌세이사구쇼
미따 가쯔시게
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    • 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
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/0213—Electrical arrangements not otherwise provided for
    • H05K1/0254—High voltage adaptations; Electrical insulation details; Overvoltage or electrostatic discharge protection ; Arrangements for regulating voltages or for using plural voltages
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/11—Printed elements for providing electric connections to or between printed circuits
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00—Apparatus or processes for manufacturing printed circuits
    • H05K3/36—Assembling printed circuits with other printed circuits
    • H05K3/361—Assembling flexible printed circuits with other printed circuits

Abstract

내용없음.None.

Description

액정표시장치(96-15987)Liquid Crystal Display (96-15987)

제1도는 본 발명의 일실시예를 도시한 전체 구성의 평면도.1 is a plan view of the overall configuration showing an embodiment of the present invention.

제2도는 제1도의 분해사시도.2 is an exploded perspective view of FIG.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

1 : 액정표시소자 2 : 플렉시블기판1 liquid crystal display 2 flexible substrate

3 : 회로기판 11 : 세그먼트단자3: circuit board 11: segment terminal

12 : 더미단자 25 : 접속단자12: dummy terminal 25: connection terminal

32 : 접지단자32: Ground terminal

본 발명은 액정표시장치에 관한 것으로서, 특히 정전기(靜電氣) 방지구조에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal display device, and more particularly, to an antistatic structure.

종래, 정전기방지를 도모한 액정표시장치로서, 예를들면 일본국 실공소 58-31188호 공보에 개시된 바와 같이, 액정표시소자와 회로기판을 고정하는 금속프레임을 회로기판의 접지단자에 접속하고, 금속프레임을 시일드재로서 사용한 것이 알려져 있다.Conventionally, as a liquid crystal display device for preventing static electricity, for example, as disclosed in Japanese Unexamined Patent Application Publication No. 58-31188, a metal frame for fixing a liquid crystal display element and a circuit board is connected to the ground terminal of the circuit board, It is known to use a metal frame as a shield material.

이에 의해, 액정표시소자를 구동할때의 구동전압에 의한 외부에의 영향을 금속프레임으로 시일드해서 작게 하고 있다.As a result, the influence on the outside caused by the driving voltage when driving the liquid crystal display element is sealed with a metal frame and reduced.

상기 종래 기술은, 구동전압에 의한 외부에의 영향은 작게 되나, 외부로부터의 정전기에 대해서는 배려가 되어 있지 않으며, 표시면에 대전한 전하에 의해 구동 IC가 파괴된다고 하는 문제가 있었다.In the above-described prior art, the influence on the outside due to the driving voltage is small, but the static electricity from the outside is not considered, and there is a problem that the driving IC is destroyed by the electric charge charged on the display surface.

이것을 더욱 상세히 기술하면, 액정표시소자는 표시기 때문에, 세트부품중에서도 제일 바깥쪽에 실장되고, 또한 표시면은 직접 손에 접촉되는 기회가 많다. 이때문에, 대전한 물체가 표시면에 접근하면 액정표시소자의 표시면에 대전하고, 이 대전한 전하는 세그먼트를 통해서 방전하는 경우가 있어, 전하가 클때 세그먼트를 구동하는 구동 IC를 파괴한다.In more detail, since the liquid crystal display device is a display device, there are many opportunities to be mounted on the outermost part of the set parts and the display surface is directly in contact with the hand. For this reason, when a charged object approaches the display surface, the charged surface may be charged to the display surface of the liquid crystal display element, and the charged charge may be discharged through the segment, thereby destroying the driving IC driving the segment when the charge is large.

본 발명의 목적은, 정전기에 의한 구동 IC의 파괴를 방지할 수 있는 액정표시장치를 제공하는데 있다.SUMMARY OF THE INVENTION An object of the present invention is to provide a liquid crystal display device capable of preventing destruction of the driving IC by static electricity.

상기 목적은 액정표시소자와, 이 액정표시소자를 구동하는 구동 IC가 탑재된 제1의 기판과, 상기 구동 IC에 전기적으로 접속된 제2의 기판을 가지고, 상기 액정표시소자에는 표시에 필요한 세그먼트단자 이외의 더미단자를 형성하고, 이 더미단자를 상기 제2의 기판에 형성된 접지단자 접속부에 전기적으로 접속하고, 또한 상기 접속은 상기 제1의 기판에 형성된 접속단자를 개재해서 행함으로써 달성된다.The object is to have a liquid crystal display element, a first substrate on which a driving IC for driving the liquid crystal display element is mounted, and a second substrate electrically connected to the driving IC, wherein the liquid crystal display element has a segment necessary for display. A dummy terminal other than the terminal is formed, the dummy terminal is electrically connected to the ground terminal connecting portion formed on the second substrate, and the connection is achieved through the connecting terminal formed on the first substrate.

액정표시소자의 표시면에 대전된 전하는, 더미단자로부터 회로기판의 접지단자로 흘러, 세그먼트 구동회로에 영향을 미치지 않기 때문에, 구동 IC를 파괴하는 일이 없다.The electric charge charged on the display surface of the liquid crystal display element flows from the dummy terminal to the ground terminal of the circuit board and does not affect the segment driving circuit, so that the driving IC is not destroyed.

이하, 본 발명의 일실시예를 제1도 및 제2도에 의해 설명한다. 액정표시소자(1)에는 본래 표시에 필요한 세그먼트단자(11) 외에, 표시용 전극에는 전기적으로 접속되어 있지 않는 더미단자(12)가 액정표시소자(1)의 단면(端面)에 형성되어 있다. 이 액정표시소자(1)에 접속되는 플렉시블기판(2)에는, 구동 IC(21)가 탑재되어 있으며, 이 구동 IC(21)에 접속된 한쪽편의 출력단자(22)가 상기 세그먼트단자(11)에 대응해서 형성되고, 구동 IC(21)에 접속된 다른쪽편의 전원단자(23) 및 접지단자(24)가 액정표시소자(1)의 3변을 둘러싸는 회로기판(3)쪽에 형성되고, 또 상기 더미단자(12)에 대응해서 접속단자(25)가 형성되어 있다. 회로기판(3)에는 전원(4)에 접속되는 전원단자(31) 및 접지단자(32)가 형성되어 있으며, 전원단자(31)에는 상기 플렉시블기판(2)의 전원단자(23)가 접속되는 전원단자 접속부(31a)가 형성되고, 접지단자(32)에는 상기 플렉시블기판(2)의 접지단자(24) 및 접속단자(25)가 접속되는 접지단자 접속부(32a),(32b)가 형성되어 있다.Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 and 2. In addition to the segment terminal 11 originally required for display, the liquid crystal display device 1 is provided with a dummy terminal 12 which is not electrically connected to the display electrode on the end face of the liquid crystal display device 1. The driver IC 21 is mounted on the flexible substrate 2 connected to the liquid crystal display device 1, and one of the output terminals 22 connected to the driver IC 21 is the segment terminal 11. And a power supply terminal 23 and a ground terminal 24 on the other side connected to the driving IC 21 are formed on the circuit board 3 surrounding the three sides of the liquid crystal display element 1, In addition, a connection terminal 25 is formed corresponding to the dummy terminal 12. The circuit board 3 is provided with a power terminal 31 and a ground terminal 32 which are connected to the power source 4, and the power terminal 31 is connected to the power terminal 23 of the flexible board 2. The power terminal connecting portion 31a is formed, and the ground terminal 32 is provided with ground terminal connecting portions 32a and 32b to which the ground terminal 24 and the connecting terminal 25 of the flexible substrate 2 are connected. have.

그리하여, 액정표시소자(1)와 플렉시블기판(2)을 이방성 코넥터(도시생략)에 의해 접속하면, 세그먼트단자(11)은 출력단자(22)에, 더미단자(12)는 접속단자(25)에 각각 전기적으로 접속된다. 또 플렉시블기판(2)의 회로기판(3)은, 전원단자(23)와 전원단자 접속부(31a), 접지단자(24)와 접지단자 접속부(32a), 접속단자(25)와 접지단자 접속부(32b)를 각각 납땜에 의해 접속한다. 이에 의해, 더미단자(12)는 접속단자(25), 접지단자접속부(32b)를 통해서 접지단자(32)에 전기적으로 접속된다.Thus, when the liquid crystal display element 1 and the flexible substrate 2 are connected by an anisotropic connector (not shown), the segment terminal 11 is connected to the output terminal 22, and the dummy terminal 12 is connected to the connection terminal 25. Are electrically connected to each other. The circuit board 3 of the flexible board 2 includes a power supply terminal 23 and a power supply terminal connection portion 31a, a ground terminal 24 and a ground terminal connection portion 32a, a connection terminal 25 and a ground terminal connection portion ( 32b) is respectively connected by soldering. As a result, the dummy terminal 12 is electrically connected to the ground terminal 32 through the connection terminal 25 and the ground terminal connecting portion 32b.

따라서, 외부로부터 액정표시소자(1)의 표시면에 대전한 전하는, 더미단자(12)로부터 회로기판(3)의 접지단자(32)로 흐르므로, 구동 IC(21)에 영향을 주는 일이 없어, 구동 IC의 파괴가 방지된다. 또 제조공정에서 취급에 의해서 발행하는 정전기에 의한 IC 파괴의 방지에도 효과가 있다.Therefore, the electric charges charged from the outside to the display surface of the liquid crystal display element 1 flow from the dummy terminal 12 to the ground terminal 32 of the circuit board 3, which affects the driving IC 21. No destruction of the drive IC is prevented. It is also effective in preventing IC destruction by static electricity issued by handling in the manufacturing process.

본 발명에 의하면, 액정표시소자의 표시면에 대전하는 전하를 접지로 방전할 수 있으므로, 정전기에 의한 구동 IC의 파괴를 방지할 수 있다.According to the present invention, since the electric charges charged on the display surface of the liquid crystal display element can be discharged to the ground, it is possible to prevent destruction of the drive IC by static electricity.

Claims (9)

액정표시소자(1)와, 이 액정표시소자(1)를 구동하는 구동 IC(21)가 탑재된 제1의 기판(2)과, 상기 구동 IC(21)에 전기적으로 접속된 제2의 기판(3)을 가지고, 상기 액정표시소자(1)에는 표시에 필요한 세그먼트단자 이외의 더미단자(12)를 형성하고, 이 더미단자(12)를 상기 제2의 기판(3)에 형성된 접지단자 접속부(32b)에 전기적으로 접속하고, 또한 상기 접속은 상기 제1의 기판(2)에 형성된 접속단자(25)를 개재해서 행하는 것을 특징으로 하는 액정표시장치.A first substrate 2 on which the liquid crystal display element 1, a drive IC 21 for driving the liquid crystal display element 1 is mounted, and a second substrate electrically connected to the drive IC 21; (3), the liquid crystal display element (1) is provided with dummy terminals (12) other than segment terminals necessary for display, and the dummy terminal (12) is connected to the ground terminal connection portion formed on the second substrate (3). An electrical connection to (32b), and the connection is carried out via a connection terminal (25) formed on the first substrate (2). 제1항에 있어서, 상기 액정표시소자(1)와 상기 제1의 기판(2)과의 전기적인 접속은 이방성 코넥터에 의해 행하는 것을 특징으로 하는 액정표시장치.The liquid crystal display device according to claim 1, wherein the electrical connection between the liquid crystal display element (1) and the first substrate (2) is made by an anisotropic connector. 제1항에 있어서, 상기 제2의 기판(3)과, 상기 제1의 기판(2)과의 전기적인 접속은 납땜에 의해 행하는 것을 특징으로 하는 액정표시장치.The liquid crystal display device according to claim 1, wherein the electrical connection between the second substrate (3) and the first substrate (2) is performed by soldering. 제2항에 있어서, 상기 제2의 기판(3)과, 상기 제1의 기판(2)과의 전기적인 접속은 납땜에 의해 행하는 것을 특징으로 하는 액정표시장치.The liquid crystal display device according to claim 2, wherein the electrical connection between the second substrate (3) and the first substrate (2) is performed by soldering. 제1항, 제2항, 제3항 또는 제4항에 있어서, 상기 제2의 기판(3)은 상기 액정표시소자(1)의 3변을 둘러싸도록 형성된 것을 특징으로 하는 액정표시장치.The liquid crystal display device according to claim 1, 2, 3 or 4, wherein the second substrate (3) is formed so as to surround three sides of the liquid crystal display element (1). 제1항, 제2항, 제3항 또는 제4항에 있어서, 상기 접지단자 접속부(32b)가 전기적으로 접속되는 접지단자(32)는 상기 제2의 기판(3)의 형상을 따라서 형성된 것을 특징으로 하는 액정표시장치.The ground terminal 32 according to claim 1, 2, 3, or 4, wherein the ground terminal connecting portion 32b is electrically connected to each other, wherein the ground terminal 32 is formed along the shape of the second substrate 3. A liquid crystal display device. 제1항, 제2항, 제3항 또는 제4항에 있어서, 상기 제1의 기판(2)에 전원을 공급하는 전원단자(31)는 상기 제2의 기판(3)의 형상을 따라서 형성된 것을 특징으로 하는 액정표시장치.The power supply terminal 31 according to claim 1, 2, 3 or 4, wherein the power supply terminal 31 for supplying power to the first substrate 2 is formed along the shape of the second substrate 3. Liquid crystal display device characterized in that. 제1항, 제2항, 제3항 또는 제4항에 있어서, 상기 제1의 기판(2)은 상기 액정표시소자(1)의 적어도 1변에 부착해서 복수개 설치해서 이루어진 것을 특징으로 하는 액정표시장치.The liquid crystal according to claim 1, 2, 3 or 4, wherein the first substrate 2 is attached to at least one side of the liquid crystal display element 1 and provided in plural. Display. 제1항, 제2항, 제3항 또는 제4항에 있어서, 상기 제1의 기판(2)은 상기 액정표시소자(1)의 대향하는 2변에 부착해서 복수개 설치해서 이루어진 것을 특징으로 하는 액정표시장치.The said 1st board | substrate 2 is attached to two opposite sides of the said liquid crystal display element 1, and is provided in multiple numbers, The said 1st board | substrate 2 characterized by the above-mentioned. LCD display device.
KR1019890003128A 1988-03-18 1989-03-14 Liquid crystal display device KR960015987B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP63063233A JPH01237523A (en) 1988-03-18 1988-03-18 Liquid crystal display device
JP63-63233 1988-03-18

Publications (2)

Publication Number Publication Date
KR890015052A KR890015052A (en) 1989-10-28
KR960015987B1 true KR960015987B1 (en) 1996-11-25

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04282618A (en) * 1991-03-11 1992-10-07 Rohm Co Ltd Liquid crystal display device
JP2916824B2 (en) * 1991-05-31 1999-07-05 アルプス電気株式会社 Liquid crystal display
JPH0751794Y2 (en) * 1991-11-19 1995-11-22 船井電機株式会社 Semiconductor mounting structure
JP4371136B2 (en) 2006-09-15 2009-11-25 エプソンイメージングデバイス株式会社 Display device
CN111627353A (en) * 2020-04-30 2020-09-04 惠州市德赛西威汽车电子股份有限公司 Segment code LCD instrument structure with high antistatic performance

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KR890015052A (en) 1989-10-28

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