WO2012102087A1 - 液晶表示装置 - Google Patents
液晶表示装置 Download PDFInfo
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- WO2012102087A1 WO2012102087A1 PCT/JP2012/050450 JP2012050450W WO2012102087A1 WO 2012102087 A1 WO2012102087 A1 WO 2012102087A1 JP 2012050450 W JP2012050450 W JP 2012050450W WO 2012102087 A1 WO2012102087 A1 WO 2012102087A1
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- liquid crystal
- crystal display
- display device
- conductive
- display element
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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
- G02F1/1345—Conductors connecting electrodes to cell terminals
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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
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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
- G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
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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
- G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
- G02F1/13332—Front frames
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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
- G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
- G02F1/133334—Electromagnetic shields
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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
- G02F1/134309—Electrodes characterised by their geometrical arrangement
- G02F1/134327—Segmented, e.g. alpha numeric display
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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
- G02F1/1345—Conductors connecting electrodes to cell terminals
- G02F1/13458—Terminal pads
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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
- G02F2202/00—Materials and properties
- G02F2202/22—Antistatic materials or arrangements
Definitions
- the present invention is directed to a liquid crystal display element having a predetermined display portion, a circuit board disposed behind the liquid crystal display element, and one end edge of the liquid crystal display element so as to electrically connect the liquid crystal display element and the circuit board.
- the present invention relates to a liquid crystal display device having a plurality of lead terminals provided in this manner.
- the liquid crystal display device described in Patent Document 1 has a substantially rectangular shape in which a transparent electrode is provided on the inner surface of each of an upper glass substrate and a lower glass substrate that are a pair of insulating substrates sealed with liquid crystal, thereby forming a display unit.
- a liquid crystal display element having a shape, a circuit board electrically connected to the liquid crystal display element via a plurality of metal lead terminals as connection members, and a substantially frame-shaped conductive pattern formed so as to surround the transparent electrode
- a plurality of lead terminals are provided along one edge of the lower glass substrate, and the conductive portion is disposed on the inner surface of the lower glass substrate so as to avoid the position of the lead terminals.
- the upper polarizing plate is attached to the upper surface side of the upper glass substrate
- the lower polarizing plate is attached to the lower surface side of the lower glass substrate
- the transparent electrodes provided on both glass substrates are overlapped.
- a voltage is applied to the portion
- the alignment of the liquid crystal in the portion changes, and light is transmitted or blocked by the upper polarizing plate and the lower polarizing plate, thereby enabling display by the liquid crystal.
- vehicle information such as the vehicle speed and the engine speed is displayed by the liquid crystal display device.
- a display panel front panel
- a display unit such as an indicator display unit
- the display panel uses a thin transparent substrate made of polycarbonate, for example, as a base material, and a black printed layer is formed on the back surface of the transparent substrate excluding the central region of the transparent substrate.
- the said vehicle information which is a display part formed in the liquid crystal display element becomes visible from an observer side through the see-through
- perspective part which is a drawing printing part in which the said black printing layer is not printed and formed.
- the clearance between the see-through portion provided at the substantially central portion of the display panel and the liquid crystal display element disposed behind the display panel (see-through portion) so as to be parallel to the display panel is about several millimeters.
- the polycarbonate resin constituting the translucent substrate that is the base material of the display panel has a property of being relatively easily charged with static electricity. Due to this, static electricity charges the translucent substrate (perspective portion). Then, when static electricity charged near the center of the fluoroscopic part propagates to the lower circuit board side, the element driving circuit mounted on the circuit board to drive the liquid crystal display element is damaged.
- an object of the present invention is to provide a liquid crystal display device in which a liquid crystal display element does not malfunction due to the influence of static electricity in order to cope with the above-described problems.
- the present invention provides a liquid crystal display element that forms a display portion by providing transparent electrodes on the inner surfaces of a pair of insulating substrates sealed with liquid crystal, and is electrically connected to the liquid crystal display element via a predetermined connecting member. And a conductive portion formed so as to surround the transparent electrode, and the conductive portion is attached to either one of the pair of insulating substrates so as to avoid a position where the connection member is disposed.
- a front panel having a see-through part or a through part through which the display unit can be visually recognized, and one end side is connected to a predetermined portion of the conductive unit and the other end side contacts the front panel.
- the first grounding portion in contact with one end side is electrically connected to another portion of the conductive portion different from the predetermined portion, and the other end side is electrically connected to a grounding portion provided on the circuit board. Characterized in that it comprises a second ground portion that are.
- the connecting member includes a plurality of lead terminals provided on the one insulating substrate so as to electrically connect the liquid crystal display element and the circuit board, and the first and second grounds.
- the portion includes first and second ground terminals provided on the one insulating substrate in a state of being juxtaposed with the lead terminals.
- the present invention is characterized in that the other end side of the first grounding portion is in contact with the front panel in a state having a spring property.
- the present invention is characterized in that the first ground portion includes a connection portion that is conductively connected to the ground portion.
- liquid crystal display device which can achieve the initial purpose and does not cause a malfunction of the liquid crystal display element due to the influence of static electricity.
- FIG. 1 is a front view of a liquid crystal display device according to an embodiment of the present invention.
- AA sectional view of FIG. Sectional drawing which expands and shows a liquid crystal display element in FIG.
- the digital speedometer as the liquid crystal display device according to the present embodiment is provided with a liquid crystal display element 10 and a lead terminal 16 which is disposed behind the liquid crystal display element 10 and is a connecting member which will be described later.
- a circuit board 20 electrically connected to the liquid crystal display element 10, a light source 30 mounted on the circuit board 20, a case body 40 positioned between the liquid crystal display element 10 and the circuit board 20, and a liquid crystal display element 10 is mainly composed of a display panel (front panel) 50 disposed on the front side of the liquid crystal display element 10 so as to cover 10 and a turning member 60 covering the peripheral edge of the display panel 50.
- the liquid crystal display element 10 has a pair of insulating substrates, an upper insulating substrate 11 and a lower insulating substrate 12, joined together by a sealing material 13, and both insulating substrates inside the sealing material 13.
- the liquid crystal 14 is sealed between 11 and 12.
- Both insulating substrates 11 and 12 are made of a rectangular transparent glass substrate, and an upper polarizing plate (not shown) is provided on the upper surface side of the upper insulating substrate 11, and a lower polarizing plate is provided on the lower surface side of the lower insulating substrate 12. (Not shown) are provided.
- a first transparent electrode 11a which is a transparent electrode having a predetermined shape, is provided on the inner surface of the upper insulating substrate 11 (that is, on the surface of the upper insulating substrate 11 facing the lower insulating substrate 12).
- a second transparent electrode that is a transparent electrode having a predetermined shape is provided on the inner surface of the side insulating substrate 12 (that is, on the surface of the lower insulating substrate 12 facing the upper insulating substrate 11) so as to face (correspond to) the first transparent electrode 11a.
- An electrode 12a is provided.
- the first transparent electrode 11a and the second transparent electrode 12a are respectively arranged on the inner surfaces of both insulating substrates 11 and 12 so as to sandwich the liquid crystal 14, and the planar shape thereof is viewed from the observer side (the liquid crystal display device is When viewed from the front), they have substantially the same shape. And the display surface location of the liquid crystal display element 10 corresponding to the 1st transparent electrode 11a and the 2nd transparent electrode 12a becomes the display part 15 which comprises a display pattern. That is, this means that the display unit 15 is formed by providing the transparent electrodes 11a and 12a on the inner surfaces of the insulating substrates 11 and 12 so as to face each other.
- a plurality of metal lead terminals 16 are fixed to the lower insulating substrate 12 along one end edge thereof.
- the individual lead terminals 16 are intensively provided on a part of the one end edge of the lower insulating substrate 12 to electrically connect the liquid crystal display element 10 and the circuit board 20.
- each lead terminal 16 is the same as the shape of a second lead terminal, which will be described later, and has a clamping part and a lead part.
- the portion is formed in a U shape, and is electrically connected to the second transparent electrode 12a when sandwiched between the edges of the lower insulating substrate 12, and the tip of the lead portion of the lead terminal 16 is provided on the circuit board 20.
- a wiring part (not shown).
- the measured value for example, vehicle speed
- the background portion 15 a of the display portion 15 other than the display portion 15 is transmitted and illuminated by lighting of the light source 30 mounted on the circuit board 20.
- a conductive portion 17 having a substantially frame-shaped conductive pattern is formed on the inner surface of the lower insulating substrate 12 among the two insulating substrates 11 and 12 so as to surround the second transparent electrode 12a.
- the conductive portion 17 is provided in a substantially frame shape on the inner surface of the lower insulating substrate 12 so as to avoid the position of the lead terminal 16 (see FIG. 4).
- a transparent electrode 12a is formed inside the conductive portion 17 (substantially central region of the lower insulating substrate 12), but the illustration of the transparent electrode 12a is omitted.
- the conductive portion 17 has a first conductive pattern T1 in which one end side is conductively connected to a first ground terminal described later and the other end side is located between the first ground terminal and the transparent electrode 12a.
- a second conductive pattern T2 formed by being routed from the first conductive pattern T1 portion on the side opposite to the connection point with the first ground terminal to the right end side of the lower insulating substrate 12, and a lower insulating
- a third conductive pattern T3 that is routed along the right end surface of the substrate 12, a fourth conductive pattern T4 that is routed along the upper end surface of the lower insulating substrate 12, and the lower insulating substrate 12
- the fifth conductive pattern T5 formed so as to extend along the left end surface of the first conductive pattern in the direction of the second conductive pattern T2 so as not to come into contact with the second conductive pattern T2 from the lower end portion of the fifth conductive pattern T5
- Bill sixth conductive patterns T6 of, and a seventh conductive pattern T7 to conduct connecting the second ground terminal
- first ground terminal 18 as a first ground portion is provided on the lower insulating substrate 12 in a state of being juxtaposed with each lead terminal 16.
- the first ground terminal 18 is formed of a metal material in the same manner as the lead terminals 16 and is formed to be bent in a substantially U-shape by a sandwiching portion 18a that is conductively connected to the first conductive pattern T1 of the conductive portion 17.
- Contact piece 18b (see FIG. 5).
- the sandwiching portion 18a is formed in a substantially U-shape, and is electrically connected to the first conductive pattern T1 by sandwiching the edge of the lower insulating substrate 12.
- the contact piece 18b is configured such that the tip side thereof is in contact (contact) with the back surface of the display panel 50 (ground color portion 52), and the static electricity charged in the display panel 50 is held between the first ground terminal 18 It has a function of propagating to the conductive portion 17 (first conductive pattern T1) through 18a.
- the first grounding terminal 18 is connected to the first conductive pattern T1 of the conductive portion 17 at the clamping portion 18a at one end thereof, and the contact piece 18b at the other end side.
- the front end side of the touch panel is in contact with the display panel 50.
- each lead terminal 16 On the other hand, on the left side of each lead terminal 16 that is opposite to the first ground terminal 18, a second ground terminal 19 that is a second ground portion is arranged in parallel with each lead terminal 16. It is provided on the lower insulating substrate 12.
- the second ground terminal 19 is formed of a metal material in the same manner as the lead terminals 16 and the first lead terminal 18, and has a sandwiching portion 19 a having the same shape as the sandwiching portion 18 a of the first ground terminal 18. It has a linear lead part 19b that hangs down below the clamping part 19a (that is, on the circuit board 20 side) (see FIG. 6).
- the sandwiching portion 19a is formed in a substantially U-shape, and is electrically connected to the seventh conductive pattern T7 of the conductive portion 17 by sandwiching the edge of the lower insulating substrate 12.
- the tip of the lead portion 19b located on the side opposite to the sandwiching portion 19a is electrically connected to a grounding portion described later provided on the circuit board 20.
- the second ground terminal 19 is connected to the seventh conductive pattern T7 of the conductive portion 17 at the holding portion 19a at one end thereof, and the lead portion 19b at the other end side.
- the tip end side of this is electrically connected to the grounding portion.
- the static electricity charged on the display panel 50 propagates to the conductive portion 17 via the contact piece 18b and the sandwiching portion 18a of the first ground terminal 18 (that is, the first panel).
- the seventh conductive patterns T1 to T7 and then to the circuit board 20 through the sandwiching portion 19a and the lead portion 19b of the second ground terminal 19 electrically connected to the seventh conductive pattern T7. It flows to the grounding portion provided (see FIGS. 4 to 6).
- the circuit board 20 is made of, for example, a hard circuit board in which a wiring pattern as the wiring portion is provided on a glass epoxy base material, and includes a light source 30, an element driving circuit (not shown) for driving the liquid crystal display element 10, and a light source.
- a light source driving circuit (not shown) for driving 30 and various circuit components (not shown) such as a resistor and a capacitor are conductively connected to the wiring portion.
- reference numeral 21 denotes a grounding portion made of a ground pattern provided on the surface of the circuit board 20, and the grounding portion 21 is conductively connected to the lead portion 19 b of the second earth terminal 19.
- a hole portion 22 penetrating the front and back of the circuit board 20 is provided in the circuit board 20 corresponding to the lead portion 19b, and a tip portion of the lead portion 19b penetrates the hole portion 22 and Protrudes behind. That is, the grounding portion 21 is patterned on the front surface (or back surface) of the circuit board 20 around the hole portion 22, and is electrically connected to the lead portion 19b by soldering or the like.
- the light source 30 is composed of, for example, a chip-type light emitting diode that appropriately emits color, and is composed of a light emitter that is mounted on the wiring portion provided on the circuit board 20 and supplies illumination light to the liquid crystal display element 10.
- the illumination light from the light source 30 transmits and illuminates the background portion 15 a other than the display portion 15.
- the case body 40 is made of, for example, white synthetic resin, and functions as a support body that supports the liquid crystal display element 10 and the display panel 50 and functions as a reflector that reflects illumination light from the light source 30 toward the liquid crystal display element 10 side.
- the lead terminal 16 and the second ground terminal 19 have a function as a terminal holder for guiding and holding the lead terminal 16 and the second ground terminal 19.
- the case body 40 includes a base portion 41 having a substantially frame shape that supports the liquid crystal display element 10 and the display panel 50, and a plurality of terminal holding portions 42 for guiding and holding the lead terminals 16 and the second ground terminals 19. And the connection part 43 which connects the base 41 and each terminal guide part 42 is comprised integrally.
- each terminal holding part 42 has a substantially frame shape, and guides (guides) the lead part of each lead terminal 16 and the lead part 19b of the second ground terminal 19 in its internal space.
- FIG. 6 only the terminal holding portion 42 corresponding to the lead portion 19b of the second ground terminal 19 is shown, but the shape of the terminal holding portion 42 corresponding to the lead portion of each lead terminal 16 is also different from the lead portion. Needless to say, the shape is the same as in 19b.
- the display panel 50 is composed of a design panel on which a display design (not shown) such as an indicator display unit is formed, for example, and a light-transmitting substrate 51 made of polycarbonate is used as a base material.
- a ground color portion 52 made of a black print layer is printed and formed using means such as screen printing.
- the see-through part 53 formed in the central region of the display panel 50 and the liquid crystal display element 10 (behind the display panel 50 (see-through part 53) so as to be parallel to the display panel 50) It is assumed that the clearance with the upper insulating substrate 11) is set to about several millimeters.
- the ground color portion 52 may be printed on the surface of the light transmissive substrate 51 instead of the back surface of the light transmissive substrate 51, or the display panel 50 may be formed as a panel body that does not include the display design. Also good.
- the facing member 60 is made of, for example, black synthetic resin, and is provided on the display panel 50 so as to cover a required portion of the display panel 50, and includes an opening 61 made of an opening window corresponding to the see-through portion 53.
- a liquid crystal display device is constituted by the above-described parts.
- static electricity charged on the display panel 50 for example, when a human hand touches the vicinity of the center on the surface side of the see-through portion 53 in the display panel 50 abuts on the display panel 50.
- the liquid crystal display element 10 that forms the display unit 15 by providing the transparent electrodes 11a and 12a on the inner surfaces of the pair of insulating substrates 11 and 12 in which the liquid crystal 14 is sealed, A circuit board 20 electrically connected to the liquid crystal display element 10 via the lead terminals 16 and a conductive portion 17 formed so as to surround the transparent electrode 12a.
- the display panel 50 having the see-through portion 53 that can visually recognize the display portion 15 and the first conductive pattern T 1 of the conductive portion 17 are electrically connected to one end side.
- the first ground terminal 18 that is connected and the other end abuts against the display panel 50 is connected to the seventh conductive pattern T7 of the conductive portion 17 and the one end side is conductively connected. End side in which and a second ground terminal 19 that is electrically connected to a ground portion 21 provided on the circuit board 20.
- the plurality of lead terminals 16 that are connection members are provided on the lower insulating substrate 12 so as to electrically connect the liquid crystal display element 10 and the circuit board 20, and are first and second ground portions.
- the second ground terminals 18 and 19 are provided on the lower insulating substrate 12 in parallel with the lead terminals 16.
- static electricity charged on the display panel 50 when a human hand touches the vicinity of the center on the surface side of the fluoroscopic part 53 does not propagate to the liquid crystal display element 10 side, but contacts (contacts) the display panel 50.
- the static electricity propagated to the contact piece 18b of the first grounding terminal 18 and the static electricity propagated to the contact piece 18b passes through the holding portion 18a and is formed of a conductive pattern formed so as to surround the display portion 15. Propagate to.
- the static electricity propagated to the conductive portion 17 is finally connected to the lead portion 19b through the pinching portion 19a and the lead portion 19b of the second ground terminal 19 which is conductively connected to the conductive portion 17.
- liquid crystal display element 10 Since the liquid crystal display element 10 is positively flowed to the grounding portion 21 made of a ground parane, there is no risk of malfunction (erroneous display) due to the influence of static electricity, and a liquid crystal display device with improved display quality is obtained. Can do.
- the contact piece 18b located on the other end side of the first ground terminal 18 is bent in a U shape so as to come into contact with the display panel 50.
- the contact piece 18b has been described. Any shape can be adopted as long as the shape can contact (contact) the display panel 50.
- the shape of the contact piece 18b may be a spiral (spiral) shape or a meandering (S-shaped) shape. Good.
- the contact piece 18b located on the other end side of the first ground terminal 18 is in contact with the display panel 50 in a state having a spring property so as to always apply tension (pressing elastic force) to the display panel 50. It is desirable. As described above, since the contact piece 18b is in contact with the display panel 50 in a state having a spring property, the connection reliability between the first ground terminal 18 and the display panel 50 can be improved.
- the example in which the see-through unit 53 that allows the display unit 15 to be seen through is formed in the display panel 50 corresponding to the display unit 15 has been described.
- the display panel 50 corresponding to 15 (that is, the translucent substrate 51) is provided with a through-hole formed of a substantially rectangular through-hole, and the display of the display unit 15 can be visually recognized from the observer side through the through-hole. It is good.
- the ground color portion 52 may be provided on the back surface portion (or surface portion) of the translucent substrate 51 excluding the penetrating portion.
- the first ground terminal 18 includes the holding portion 18a and the contact piece 18b has been described.
- the first ground terminal 18 is illustrated in FIG. 18 includes a pinching portion 18a, a contact piece 18, and a linear connecting portion 18c formed below the pinching portion 18a on the circuit board 20 side.
- the connecting portion 18c is connected to the grounding portion 21. It is good also as a structure made to conduct-connect.
- the present invention provides a liquid crystal display element that forms a display portion by providing a transparent electrode on the inner surface of a pair of insulating substrates sealed with liquid crystal, and a conductive connection with the liquid crystal display element via a connecting member comprising a lead terminal.
- the present invention can be applied to a liquid crystal display device including a circuit board to be manufactured.
- Liquid crystal display element 11 Upper insulating substrate (insulating substrate) 11a First transparent electrode (transparent electrode) 12 Lower insulating substrate (insulating substrate) 12a Second transparent electrode (transparent electrode) 14 Liquid crystal 15 Display section 16 Lead terminal (connecting member) 17 Conductive part 18 1st earthing terminal (1st earthing part) 18a, 19a Clamping part 18b Contact piece 18c connection 19 Second earthing terminal (second earthing part) 19b Lead part 20 Circuit board 21 Grounding part 40 Case body 50 Display panel (front panel) 51 Translucent substrate 53 see-through part 60 facing parts T1 first conductive pattern (predetermined portion of the conductive portion) T2 Second conductive pattern T3 Third conductive pattern T4 Fourth conductive pattern T5 fifth conductive pattern T6 Sixth conductive pattern T7 Seventh conductive pattern (other part of conductive part)
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
Description
そこで本発明は、前述の課題に対して対処するため、液晶表示素子が静電気の影響を受けて誤動作する虞のない液晶表示装置の提供を目的とするものである。
11 上側絶縁基板(絶縁基板)
11a 第1透明電極(透明電極)
12 下側絶縁基板(絶縁基板)
12a 第2透明電極(透明電極)
14 液晶
15 表示部
16 リード端子(接続部材)
17 導電部
18 第1のアース端子(第1のアース部)
18a、19a 挟持部
18b 接触片
18c 接続部
19 第2のアース端子(第2のアース部)
19b リード部
20 回路基板
21 接地部
40 ケース体
50 表示パネル(前面パネル)
51 透光性基板
53 透視部
60 見返し部材
T1 第1の導電パターン(導電部の所定箇所)
T2 第2の導電パターン
T3 第3の導電パターン
T4 第4の導電パターン
T5 第5の導電パターン
T6 第6の導電パターン
T7 第7の導電パターン(導電部の他の箇所)
Claims (4)
- 液晶を封止した一対の絶縁基板の内側表面に透明電極が各々設けられることで表示部を形成する液晶表示素子と、
所定の接続部材を介して前記液晶表示素子と導通接続される回路基板と、
前記透明電極を取り囲むように形成される導電部とを備え、
前記導電部が前記接続部材の配設位置を避けるように前記一対の絶縁基板のうちどちらか一方の絶縁基板に設けられている液晶表示装置において、
前記表示部を視認可能な透視部もしくは貫通部を有する前面パネルと、
一端側が前記導電部の所定箇所に導通接続されているとともに他端側が前記前面パネルに当接する第1のアース部と、
一端側が前記所定箇所とは異なる前記導電部の他の箇所に導通接続されているとともに他端側が前記回路基板に設けられた接地部に導通接続されている第2のアース部とを備えていることを特徴とする液晶表示装置。 - 前記接続部材は、前記液晶表示素子と前記回路基板とを導通接続するように前記一方の絶縁基板に設けられた複数個のリード端子からなり、
前記第1、第2のアース部は、前記リード端子と並設された状態で前記一方の絶縁基板に設けられた第1、第2のアース端子からなることを特徴とする請求項1記載の液晶表示装置。 - 前記第1のアース部の前記他端側は、バネ性を有した状態で前記前面パネルに当接していることを特徴とする請求項1または請求項2記載の液晶表示装置。
- 前記第1のアース部は、前記接地部に導通接続される接続部を備えていることを特徴とする請求項1から請求項3のうち何れか1つに記載の液晶表示装置。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201280006300.XA CN103329031B (zh) | 2011-01-27 | 2012-01-12 | 液晶显示装置 |
EP12739657.0A EP2669733B1 (en) | 2011-01-27 | 2012-01-12 | Liquid crystal display device |
KR1020137018662A KR20140006824A (ko) | 2011-01-27 | 2012-01-12 | 액정표시장치 |
US13/982,241 US9411202B2 (en) | 2011-01-27 | 2012-01-12 | Liquid crystal display device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011014975A JP5590403B2 (ja) | 2011-01-27 | 2011-01-27 | 液晶表示装置 |
JP2011-014975 | 2011-01-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2012102087A1 true WO2012102087A1 (ja) | 2012-08-02 |
Family
ID=46580660
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2012/050450 WO2012102087A1 (ja) | 2011-01-27 | 2012-01-12 | 液晶表示装置 |
Country Status (6)
Country | Link |
---|---|
US (1) | US9411202B2 (ja) |
EP (1) | EP2669733B1 (ja) |
JP (1) | JP5590403B2 (ja) |
KR (1) | KR20140006824A (ja) |
CN (1) | CN103329031B (ja) |
WO (1) | WO2012102087A1 (ja) |
Cited By (1)
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EP2985751A1 (en) * | 2013-04-09 | 2016-02-17 | Nippon Seiki Co., Ltd. | Display device |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JP6493750B2 (ja) * | 2015-04-22 | 2019-04-03 | 日本精機株式会社 | 計器装置 |
JP6837103B2 (ja) * | 2019-08-08 | 2021-03-03 | 日本精機株式会社 | 車両用表示装置 |
US11363745B1 (en) * | 2020-07-07 | 2022-06-14 | Waymo Llc | Housing for display electromagnetic shielding and electrostatic grounding |
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2012
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- 2012-01-12 WO PCT/JP2012/050450 patent/WO2012102087A1/ja active Application Filing
- 2012-01-12 EP EP12739657.0A patent/EP2669733B1/en not_active Not-in-force
- 2012-01-12 KR KR1020137018662A patent/KR20140006824A/ko not_active Application Discontinuation
- 2012-01-12 CN CN201280006300.XA patent/CN103329031B/zh not_active Expired - Fee Related
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EP2985751A1 (en) * | 2013-04-09 | 2016-02-17 | Nippon Seiki Co., Ltd. | Display device |
EP2985751A4 (en) * | 2013-04-09 | 2017-05-03 | Nippon Seiki Co., Ltd. | Display device |
Also Published As
Publication number | Publication date |
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EP2669733B1 (en) | 2017-06-28 |
JP2012155176A (ja) | 2012-08-16 |
US9411202B2 (en) | 2016-08-09 |
US20130314657A1 (en) | 2013-11-28 |
CN103329031A (zh) | 2013-09-25 |
EP2669733A4 (en) | 2014-08-20 |
KR20140006824A (ko) | 2014-01-16 |
EP2669733A1 (en) | 2013-12-04 |
CN103329031B (zh) | 2016-01-20 |
JP5590403B2 (ja) | 2014-09-17 |
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