US20020024624A1 - Liquid crystal display device - Google Patents
Liquid crystal display deviceDownload PDFInfo
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- US20020024624A1 US20020024624A1US09/258,075US25807599AUS2002024624A1US 20020024624 A1US20020024624 A1US 20020024624A1US 25807599 AUS25807599 AUS 25807599AUS 2002024624 A1US2002024624 A1US 2002024624A1
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- panel
- transparent electrode
- lcd
- electrode layer
- liquid crystal
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Images
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
- G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
- 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
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133604—Direct backlight with lamps
- 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
- 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
- G02F2202/28—Adhesive materials or arrangements
Definitions
- the present inventionrelates to a display device and, more particularly, to an improvement in a liquid crystal display device having an electroluminescence (to be referred to as an EL hereinafter) panel as a backlight source.
- an ELelectroluminescence
- An EL panelis conventionally utilized as a backlight source for a liquid crystal display device.
- the circuit portions of the display device mounted on the circuit boardmust be protected from electromagnetic wave noise generated by the EL panel.
- FIG. 1In a liquid crystal display device disclosed in Japanese Unexamined Patent Publication No. 9-152605, as shown in FIG. 1, an EL panel 52 is placed on a circuit board 51 by stacking, a liquid crystal panel 54 is placed on an emission surface 52 a side of the EL panel 52 by stacking, and a frame 55 is mounted on the surface of the liquid crystal panel 54 .
- a shield layer 53is formed on the lower surface of the EL panel 52 . Since the shield layer 53 is provided between the EL panel 52 and circuit board 51 , the electromagnetic wave noise generated by the EL panel 52 is prevented from adversely affecting the respective circuits on the circuit board 51 .
- the electromagnetic wave noise generated by the EL panelcan be prevented from adversely affecting the respective circuits on the circuit board. If, however, the liquid crystal display device is applied to a portable terminal such as a cellular phone or PHS, since a display 33 is arranged near an ear piece 32 , as shown in FIG. 2, the acoustic noise generated by the EL panel increases due to the resonance of the display 33 . Even slight noise becomes offensive to the ear to discomfort the user.
- the present inventionhas been made in consideration of the above situation of the prior art, and has its object to provide a liquid crystal display device in which noise output from a speech reception port and a display due to acoustic noise from an EL panel can be decreased.
- a liquid crystal display devicecomprising a shield layer for acoustic noise prevention between an LCD and an EL panel serving as a backlight source for the LCD.
- the present inventionalso has auxiliary aspects as follows.
- the shield layer of the first main aspectis fixed to a surface of the EL panel by adhesion.
- the shield layer of the first main aspectis fixed to the LCD through a double-coated tape by adhesion.
- the shield layer of the first main aspectis a transparent electrode layer connected to ground.
- the transparent electrode layer of the third auxiliary aspectis formed on one entire surface of the EL panel.
- the transparent electrode layer of the third auxiliary aspecthas an impedance set to less than several ten k ⁇ .
- the shield layer of the first main aspectis a conductor selected from a group consisting of an ITO foil, an aluminum foil and silver foil.
- a liquid crystal display devicecomprising a ground plate between an LCD and an EL panel serving as a backlight source for the LCD.
- the ground plate of the second main aspectis formed by forming a transparent electrode layer on one surface of a PET film.
- an electromagnetic wave preventive ground plate having a transparent electrode layer or transparent electrode connected to groundis placed between an LCD and an EL panel to shield an electric field that varies in accordance with a drive frequency generated by the EL panel.
- Resonanceacoustic noise
- the EL panel and the transparent electrode of the LCDcan accordingly be decreased.
- noise output from the ear piece and displaycan be decreased.
- FIG. 1is an exploded perspective view showing the main components of a conventional liquid crystal display device
- FIG. 2is a front view showing a conventional cellular phone
- FIG. 3is an exploded perspective view showing the main components of a liquid crystal display device according to the present invention.
- FIG. 4is a schematic sectional view of an EL panel and an LCD shown in FIG. 3 according to an embodiment.
- FIG. 5is a schematic sectional view of a modification of an EL panel and an LCD.
- FIG. 3is an exploded perspective view of the main components of a display device according to an embodiment.
- the display device of this embodimenthas a circuit board 23 on which mounting parts are mounted at predetermined positions.
- the circuit board 23 and the lower surface of an EL panel 1are adhered to each other through a double-coated tape 22 a .
- the double-coated tape 22 ais used for fixing the EL panel 1 to the circuit board 23 .
- vibration of the EL panel 1can be suppressed.
- the EL panel 1is provided with a ground terminal 25 , an upper surface electrode terminal 26 , and a lower surface electrode terminal 27 .
- a transparent electrode layer (not shown) formed on the upper surface of the EL panel 1 , and an LCD 2are adhered to each other through a double-coated tape 22 b .
- the double-coated tape 22 bis employed to fix the LCD 2 and is preferably a thin tape having a thickness of about 0.1 ⁇ m (micrometer).
- FIG. 4shows the sectional arrangement of the EL panel 1 and LCD 2 shown in FIG. 3.
- the EL panel 1is constituted by a PET film 7 , a transparent electrode layer 8 , an emission layer 9 , an insulator layer 10 , a rear electrode layer 11 , and an insulating layer 12 .
- the PET film 7is formed of polyester
- the transparent electrode layer 8is formed by forming a thin indium-tin oxide (ITO) film on the surface of the PET film 7 by vapor deposition.
- the emission layer 9is formed of ZnS (zinc sulfide) or the like
- the insulator layer 10is formed of an insulator such as a rubber-based resin.
- the rear electrode layer 11is formed of carbon
- the insulating layer 12is formed by overcoating such as resist printing.
- An acoustic noise preventive shield layerpreferably a transparent electrode layer 6 , connected to ground through the ground terminal 25 is formed on the surface of the EL panel 1 .
- the transparent electrode layer 6is desirably formed on the surface of the EL panel 1 as large as possible. Hence, it is preferable to form the transparent electrode layer 6 on the surface of a large PET film by vapor deposition and to pattern it into the shape of the EL panel 1 , so that it is present on the entire surface of the EL panel 1 .
- the impedance of the transparent electrode layer 6i.e., the resistance, is desirably set to a low value, e.g., less than several ten k ⁇ .
- a conductorsuch as an aluminum foil or a silver foil having a low resistance
- a transparent electrode layer having a high optical transmissionsuch as, for example, an ITO foil is desirably used.
- An inverter circuit 3is controlled by a CPU (not shown). For example, when the user operates a switch (not shown), the inverter circuit 3 boosts the voltage of a DC power supply 4 and converts the voltage to an AC signal. The AC signal is applied to the EL panel 1 through the upper surface electrode terminal 26 and lower surface electrode terminal 27 to cause it to emit light.
- the voltage of the output signal from the inverter circuit 3is usually as high as AC 100 V, and a drive frequency in an audio frequency band of about 200 Hz to 600 Hz is used.
- the LCD 2is constituted by a glass plate 13 having a polarizing film, a transparent electrode layer 14 , a liquid crystal 15 , a transparent electrode layer 16 , and a glass plate 17 having a polarizing film, and is connected to a drive circuit 5 .
- the present inventionhas been described so far by way of its preferred embodiment.
- the liquid crystal display device according to the present inventionis not limited to the above embodiment.
- a ground plate 19on which a transparent electrode layer 21 formed on one surface of a PET film 20 is formed, may be placed between an LCD 2 and an EL panel 18 , as shown in the modification of FIG. 5.
- the transparent electrode layer 21is connected to ground.
- the ground plate 19must be fixed by, e.g., adhering it to the EL panel 18 .
- the transparent electrode layer 21is formed on the separate PET film 20 by vapor deposition.
- this liquid crystal display deviceis inferior to that shown in FIG. 4 in terms of cost, optical transmission, thickness, and assembly easiness, it is excellent as a temporary countermeasure in the manufacturing process.
- the EL panelis fixed to the circuit board with the double-coated tape.
- the EL panelmay be fixed by adhering it to a rigid substrate (base).
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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)
- Electroluminescent Light Sources (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Liquid Crystal (AREA)
Abstract
Description
- 1. Field of the Invention[0001]
- The present invention relates to a display device and, more particularly, to an improvement in a liquid crystal display device having an electroluminescence (to be referred to as an EL hereinafter) panel as a backlight source.[0002]
- 2. Description of the Prior Art[0003]
- An EL panel is conventionally utilized as a backlight source for a liquid crystal display device. When an EL panel is used as a backlight source, the circuit portions of the display device mounted on the circuit board must be protected from electromagnetic wave noise generated by the EL panel.[0004]
- In a liquid crystal display device disclosed in Japanese Unexamined Patent Publication No. 9-152605, as shown in FIG. 1, an[0005]
EL panel 52 is placed on acircuit board 51 by stacking, aliquid crystal panel 54 is placed on anemission surface 52aside of theEL panel 52 by stacking, and aframe 55 is mounted on the surface of theliquid crystal panel 54. Ashield layer 53 is formed on the lower surface of theEL panel 52. Since theshield layer 53 is provided between theEL panel 52 andcircuit board 51, the electromagnetic wave noise generated by theEL panel 52 is prevented from adversely affecting the respective circuits on thecircuit board 51. - In the liquid crystal display device of this type, the electromagnetic wave noise generated by the EL panel can be prevented from adversely affecting the respective circuits on the circuit board. If, however, the liquid crystal display device is applied to a portable terminal such as a cellular phone or PHS, since a[0006]
display 33 is arranged near anear piece 32, as shown in FIG. 2, the acoustic noise generated by the EL panel increases due to the resonance of thedisplay 33. Even slight noise becomes offensive to the ear to discomfort the user. - The present invention has been made in consideration of the above situation of the prior art, and has its object to provide a liquid crystal display device in which noise output from a speech reception port and a display due to acoustic noise from an EL panel can be decreased.[0007]
- In order to achieve the above object, according to the first main aspect of the present invention, there is provided a liquid crystal display device comprising a shield layer for acoustic noise prevention between an LCD and an EL panel serving as a backlight source for the LCD.[0008]
- In addition to the first main aspect, the present invention also has auxiliary aspects as follows.[0009]
- According to the first auxiliary aspect, the shield layer of the first main aspect is fixed to a surface of the EL panel by adhesion.[0010]
- According to the second auxiliary aspect, the shield layer of the first main aspect is fixed to the LCD through a double-coated tape by adhesion.[0011]
- According to the third auxiliary aspect, the shield layer of the first main aspect is a transparent electrode layer connected to ground.[0012]
- According to the fourth auxiliary aspect, the transparent electrode layer of the third auxiliary aspect is formed on one entire surface of the EL panel.[0013]
- According to the fifth auxiliary aspect, the transparent electrode layer of the third auxiliary aspect has an impedance set to less than several ten kΩ.[0014]
- According to the sixth auxiliary aspect, the shield layer of the first main aspect is a conductor selected from a group consisting of an ITO foil, an aluminum foil and silver foil.[0015]
- In order to achieve the above object, according to the second main aspect of the present invention, there is provided a liquid crystal display device comprising a ground plate between an LCD and an EL panel serving as a backlight source for the LCD.[0016]
- The ground plate of the second main aspect is formed by forming a transparent electrode layer on one surface of a PET film.[0017]
- According to the present invention having the aspects described above, an electromagnetic wave preventive ground plate having a transparent electrode layer or transparent electrode connected to ground is placed between an LCD and an EL panel to shield an electric field that varies in accordance with a drive frequency generated by the EL panel. Resonance (acoustic noise) between the EL panel and the transparent electrode of the LCD can accordingly be decreased. As a result, noise output from the ear piece and display can be decreased.[0018]
- The above and many other objects, features and advantages of the present invention will become manifest to those skilled in the art upon making reference to the following detailed description and accompanying drawings in which preferred embodiments incorporating the principle of the present invention are shown by way of illustrative examples.[0019]
- FIG. 1 is an exploded perspective view showing the main components of a conventional liquid crystal display device;[0020]
- FIG. 2 is a front view showing a conventional cellular phone;[0021]
- FIG. 3 is an exploded perspective view showing the main components of a liquid crystal display device according to the present invention;[0022]
- FIG. 4 is a schematic sectional view of an EL panel and an LCD shown in FIG. 3 according to an embodiment; and[0023]
- FIG. 5 is a schematic sectional view of a modification of an EL panel and an LCD.[0024]
- Several preferred embodiments of the present invention will be described with reference to the accompanying drawings.[0025]
- FIG. 3 is an exploded perspective view of the main components of a display device according to an embodiment.[0026]
- Referring to FIG. 3, the display device of this embodiment has a[0027]
circuit board 23 on which mounting parts are mounted at predetermined positions. Thecircuit board 23 and the lower surface of an EL panel1 are adhered to each other through a double-coatedtape 22a. The double-coatedtape 22ais used for fixing the EL panel1 to thecircuit board 23. When the EL panel1 is firmly fixed to thecircuit board 23 with the double-coatedtape 22a, vibration of the EL panel1 can be suppressed. The EL panel1 is provided with aground terminal 25, an uppersurface electrode terminal 26, and a lowersurface electrode terminal 27. A transparent electrode layer (not shown) formed on the upper surface of the EL panel1, and anLCD 2 are adhered to each other through a double-coatedtape 22b. The double-coatedtape 22bis employed to fix theLCD 2 and is preferably a thin tape having a thickness of about 0.1 μm (micrometer). - FIG. 4 shows the sectional arrangement of the EL panel[0028]1 and
LCD 2 shown in FIG. 3. - Referring to FIG. 4, the EL panel[0029]1 is constituted by a
PET film 7, a transparent electrode layer8, anemission layer 9, aninsulator layer 10, arear electrode layer 11, and aninsulating layer 12. ThePET film 7 is formed of polyester, and the transparent electrode layer8 is formed by forming a thin indium-tin oxide (ITO) film on the surface of thePET film 7 by vapor deposition. Theemission layer 9 is formed of ZnS (zinc sulfide) or the like, and theinsulator layer 10 is formed of an insulator such as a rubber-based resin. Therear electrode layer 11 is formed of carbon, and theinsulating layer 12 is formed by overcoating such as resist printing. - An acoustic noise preventive shield layer, preferably a transparent electrode layer[0030]6, connected to ground through the
ground terminal 25 is formed on the surface of the EL panel1. The transparent electrode layer6 is desirably formed on the surface of the EL panel1 as large as possible. Hence, it is preferable to form the transparent electrode layer6 on the surface of a large PET film by vapor deposition and to pattern it into the shape of the EL panel1, so that it is present on the entire surface of the EL panel1. The impedance of the transparent electrode layer6, i.e., the resistance, is desirably set to a low value, e.g., less than several ten kΩ. Although a conductor such as an aluminum foil or a silver foil having a low resistance can be used as the transparent electrode layer6, it decreases the function of the LE as the backlight. Therefore, a transparent electrode layer having a high optical transmission such as, for example, an ITO foil is desirably used. - An[0031]
inverter circuit 3 is controlled by a CPU (not shown). For example, when the user operates a switch (not shown), theinverter circuit 3 boosts the voltage of a DC power supply4 and converts the voltage to an AC signal. The AC signal is applied to the EL panel1 through the uppersurface electrode terminal 26 and lowersurface electrode terminal 27 to cause it to emit light. The voltage of the output signal from theinverter circuit 3 is usually as high as AC 100 V, and a drive frequency in an audio frequency band of about 200 Hz to 600 Hz is used. - The[0032]
LCD 2 is constituted by aglass plate 13 having a polarizing film, atransparent electrode layer 14, a liquid crystal15, a transparent electrode layer16, and aglass plate 17 having a polarizing film, and is connected to adrive circuit 5. - In this arrangement, in the EL panel[0033]1, when the output signal from the
inverter circuit 3 is applied to the transparent electrode layer8 andrear electrode layer 11, an electric field moving in the vertical direction (to the upper and lower directions) is generated by the transparent electrode layer8 andrear electrode layer 11 to cause theemission layer 9 to emit light. Although the electric field generated by the transparent electrode layer8 of the EL panel1 is also generated in the direction toward theLCD 2, it is shielded as it is attracted by ground due to the low-impedance transparent electrode layer6 formed on the surface of the EL panel1. - The present invention has been described so far by way of its preferred embodiment. The liquid crystal display device according to the present invention is not limited to the above embodiment. For example, although the transparent electrode layer[0034]6 connected to ground is formed on the surface of the EL panel1 in the liquid crystal display device of the above embodiment, a
ground plate 19, on which atransparent electrode layer 21 formed on one surface of aPET film 20 is formed, may be placed between anLCD 2 and anEL panel 18, as shown in the modification of FIG. 5. Thetransparent electrode layer 21 is connected to ground. Theground plate 19 must be fixed by, e.g., adhering it to theEL panel 18. In the liquid crystal display device of this modification, thetransparent electrode layer 21 is formed on theseparate PET film 20 by vapor deposition. Although this liquid crystal display device is inferior to that shown in FIG. 4 in terms of cost, optical transmission, thickness, and assembly easiness, it is excellent as a temporary countermeasure in the manufacturing process. - In the embodiment and its modification described above, the EL panel is fixed to the circuit board with the double-coated tape. Alternatively, the EL panel may be fixed by adhering it to a rigid substrate (base).[0035]
Claims (9)
1. A liquid crystal display device comprising a shield layer for acoustic noise prevention between an LCD and an EL panel serving as a backlight source for said LCD.
2. A device according toclaim 1 , wherein said shield layer is fixed to a surface of said EL panel by adhesion.
3. A device according toclaim 1 , wherein said shield layer is fixed to said LCD through a double-coated tape by adhesion.
4. A device according toclaim 1 , wherein said shield layer is a transparent electrode layer connected to ground.
5. A device according toclaim 4 , wherein said transparent electrode layer is formed on one entire surface of said EL panel.
6. A device according toclaim 4 , wherein said transparent electrode layer has an impedance set to less than several ten kΩ.
7. A device according toclaim 1 , wherein said shield layer is a conductor selected from a group consisting of an ITO foil, an aluminum foil and silver foil.
8. A liquid crystal display device comprising a ground plate between an LCD and an EL panel serving as a backlight source for said LCD.
9. A device according toclaim 8 , wherein said ground plate is formed by forming a transparent electrode layer on one surface of a PET film.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP047714/1998 | 1998-02-27 | ||
| JP10-047714 | 1998-02-27 | ||
| JP04771498AJP3241657B2 (en) | 1998-02-27 | 1998-02-27 | Display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| US20020024624A1true US20020024624A1 (en) | 2002-02-28 |
| US6456342B1 US6456342B1 (en) | 2002-09-24 |
Family
ID=12782987
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US09/258,075Expired - LifetimeUS6456342B1 (en) | 1998-02-27 | 1999-02-26 | LCD device having a noise-shield layer directly between LCD and EL panel |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US6456342B1 (en) |
| JP (1) | JP3241657B2 (en) |
| CN (1) | CN1232241A (en) |
| AU (1) | AU753656B2 (en) |
| GB (1) | GB2334808B (en) |
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| US6680723B2 (en)* | 2000-06-09 | 2004-01-20 | Seiko Precision Circuits Inc. | Display device |
| US20060103639A1 (en)* | 2004-11-16 | 2006-05-18 | Nec Lcd Technologies, Ltd | Display device |
| US20070075956A1 (en)* | 2004-11-04 | 2007-04-05 | Matsushita Electric Industrial Co., Ltd. | Mobile terminal apparatus |
| US20070121021A1 (en)* | 2005-11-29 | 2007-05-31 | Kaehler John W | Display device with acoustic noise suppression |
| US20090015562A1 (en)* | 2003-11-28 | 2009-01-15 | Sharp Kabushiki Kaisha | Display system |
| US20110051787A1 (en)* | 2009-08-28 | 2011-03-03 | Apple Inc. | Electronic device instructions provided using radio signals |
| US20120140434A1 (en)* | 2007-03-15 | 2012-06-07 | Au Optronics Corporation | Display Panel and a Light Source Used Therein |
| US9541961B1 (en) | 2015-08-25 | 2017-01-10 | Microsoft Technology Licensing, Llc | Shielding via display chassis |
| US11237654B2 (en)* | 2019-03-29 | 2022-02-01 | Au Optronics Corporation | Touch display and method for controlling the same |
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| KR100658283B1 (en)* | 2005-11-23 | 2006-12-14 | 삼성에스디아이 주식회사 | Display device equipped with a window assembly and a portable terminal comprising the same |
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- 1998-02-27JPJP04771498Apatent/JP3241657B2/ennot_activeExpired - Fee Related
- 1999
- 1999-02-26AUAU18461/99Apatent/AU753656B2/ennot_activeCeased
- 1999-02-26GBGB9904542Apatent/GB2334808B/ennot_activeExpired - Fee Related
- 1999-02-26USUS09/258,075patent/US6456342B1/ennot_activeExpired - Lifetime
- 1999-02-26CNCN99103380Apatent/CN1232241A/enactivePending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6680723B2 (en)* | 2000-06-09 | 2004-01-20 | Seiko Precision Circuits Inc. | Display device |
| US20090015562A1 (en)* | 2003-11-28 | 2009-01-15 | Sharp Kabushiki Kaisha | Display system |
| US7683887B2 (en) | 2003-11-28 | 2010-03-23 | Sharp Kabushiki Kaisha | Display system |
| US20070075956A1 (en)* | 2004-11-04 | 2007-04-05 | Matsushita Electric Industrial Co., Ltd. | Mobile terminal apparatus |
| US20060103639A1 (en)* | 2004-11-16 | 2006-05-18 | Nec Lcd Technologies, Ltd | Display device |
| US20070121021A1 (en)* | 2005-11-29 | 2007-05-31 | Kaehler John W | Display device with acoustic noise suppression |
| US8550686B2 (en)* | 2007-03-15 | 2013-10-08 | Au Optronics Corporation | Display panel and a light source used therein |
| US20120140434A1 (en)* | 2007-03-15 | 2012-06-07 | Au Optronics Corporation | Display Panel and a Light Source Used Therein |
| US20110051787A1 (en)* | 2009-08-28 | 2011-03-03 | Apple Inc. | Electronic device instructions provided using radio signals |
| US8761683B2 (en)* | 2009-08-28 | 2014-06-24 | Apple Inc. | Electronic device instructions provided using radio signals |
| US9541961B1 (en) | 2015-08-25 | 2017-01-10 | Microsoft Technology Licensing, Llc | Shielding via display chassis |
| US10156872B2 (en) | 2015-08-25 | 2018-12-18 | Microsoft Technology Licensing, Llc | Shielding via display chassis |
| US11237654B2 (en)* | 2019-03-29 | 2022-02-01 | Au Optronics Corporation | Touch display and method for controlling the same |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2334808A (en) | 1999-09-01 |
| JPH11249581A (en) | 1999-09-17 |
| GB9904542D0 (en) | 1999-04-21 |
| GB2334808B (en) | 2002-06-05 |
| US6456342B1 (en) | 2002-09-24 |
| CN1232241A (en) | 1999-10-20 |
| JP3241657B2 (en) | 2001-12-25 |
| AU753656B2 (en) | 2002-10-24 |
| AU1846199A (en) | 1999-09-09 |
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