WO2010102491A1 - Liquid crystal display integrated with capacitive touch devices - Google Patents
Liquid crystal display integrated with capacitive touch devices Download PDFInfo
- Publication number
- WO2010102491A1 WO2010102491A1 PCT/CN2009/074916 CN2009074916W WO2010102491A1 WO 2010102491 A1 WO2010102491 A1 WO 2010102491A1 CN 2009074916 W CN2009074916 W CN 2009074916W WO 2010102491 A1 WO2010102491 A1 WO 2010102491A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- electrode
- polarizing plate
- liquid crystal
- crystal display
- capacitive touch
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
- G06F3/0445—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
-
- 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
- G02F1/13338—Input devices, e.g. touch panels
-
- 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
- G02F1/133528—Polarisers
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
- G06F3/0446—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
- G06F3/0448—Details of the electrode shape, e.g. for enhancing the detection of touches, for generating specific electric field shapes, for enhancing display quality
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04103—Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
Definitions
- the present invention relates to a liquid crystal display integrated with a touch device. More specifically, it relates to a liquid crystal display integrated with a capacitive touch device.
- Fig. 1 is a sectional view of a conventional liquid crystal display panel
- Fig. 2 is a sectional view of a liquid crystal display module.
- the liquid crystal display panel 1 comprises a liquid crystal display module 10 and a protective layer 11 attached thereon.
- the liquid crystal display module 10 includes a lower polarizing plate 12, a lower substrate 101, a lower conductive layer 102, a liquid crystal layer 103, an upper conductive layer 104, a color filter 13, an upper substrate 105 and an upper polarizing plate 14.
- the touch device comprises resistance films.
- a stress generated by the object brings the two resistance films into physical contact, so that a switch is turned on and a touch signal is sent to a controller for processing to determine the touched position.
- the resistance films are prone to damages caused by frequent pressing and it becomes hard to precisely determine the touched position.
- a capacitive touch device comprises two touch sensing layers and a medium layer arranged between the two touch sensing layers.
- the liquid crystal display panel and the capacitive touch device are produced separately, and then subsequently stacked and attached together.
- a user can use a conductive object such as a finger or stylus to select the icons shown on the surface of the touch device to operate or to input data.
- the liquid crystal display of the present invention in one embodiment, comprises a liquid crystal display panel, a first electrode layer and a second electrode layer.
- the liquid crystal display panel comprises a liquid crystal display module comprising an upper polarizing plate and a lower polarizing plate.
- the first electrode layer comprises an electrode pattern (e.g., a predetermined electrode pattern) formed on a surface, such as the top surface, of the upper polarizing plate.
- the second electrode layer comprises an electrode pattern formed on the bottom of the upper polarizing plate.
- a liquid crystal display and a capacitive touch sensing layer that is capable of sensing touch movement in a first and a second direction, such as X-axis movement and Y-axis movement, are included.
- the capacitive touch sensing layer is formed immediately on a surface, such as the top or bottom surface, of the upper polarizing plate.
- a liquid crystal display as described can be integrated with a capacitive touch device without using extra substrates.
- the present invention enables an integrated capacitive touch device be made slimmer and lighter. More particularly, the liquid crystal display is directly integrated with capacitive touch device in a simpler manufacturing process instead of being assembled together after separate manufacturing processes. It has many advantages such as a simpler manufacturing process, a higher yield rate, and a lower manufacture cost. In addition, because the electrode layer is attached, e.g., to the top of the upper polarizing plate of the liquid crystal display and is closer to the finger or other touch object, the electrode layer's touch-sensing ability is improved.
- Fig. 1 is a sectional view of a conventional liquid crystal display panel
- Fig. 2 is a sectional view of a conventional liquid crystal display module
- FIG. 3 is a sectional view in accordance with a first embodiment of the present invention.
- Fig. 4 is an exploded view showing the first embodiment of the present invention
- Fig. 5 is a exploded view showing a second embodiment of the present invention
- FIG. 6 is a exploded view showing a third embodiment of the present invention.
- Fig. 7 is a sectional view of a portion of a capacitive touch sensing layer.
- Fig. 8 is an exploded view showing a fourth embodiment of the present invention.
- the liquid crystal display 100 of the present invention includes a liquid crystal display panel 1, a first electrode layer 2, and a second electrode layer 3.
- the liquid crystal display panel 1 comprises a lower polarizing plate 12, a lower substrate 101, a lower conductive layer 102, a liquid crystal layer 103, an upper conductive layer 104, a color filter 13, an upper substrate 105, an upper polarizing plate 14 and a protective layer 11.
- the color filter 13 includes a black matrix and a color resist.
- the first electrode layer 2 is formed immediately on top of the upper polarizing plate 14; and the second electrode layer 3 is formed immediately on the bottom of the upper polarizing plate 14.
- Fig. 4 is an exploded view showing the first embodiment of the present invention.
- the first electrode layer 2 has an electrode pattern 20 including a plurality of electrode strips 21, and the electrode strips 21 are substantially parallel to and spaced from each other.
- the second electrode layer 3 has an electrode pattern 30 that includes a plurality of electrode strips 31, and the electrode strips 31 are substantially parallel to and spaced from each other.
- the electrode strips 21 of the first electrode layer 2 and the electrode strips 31 of the second electrode layer 2 are electrically coupled with a controller (not shown in the figure).
- the electrode strips 21 of the first electrode layer 2 are arranged in a direction substantially perpendicular to that of the electrode strips 31 of the second electrode layer 3.
- the electrode strips 21 of the first electrode layer 2 is configured to sense a touch movement in a first direction, such as axis Y
- the electrode strips 31 of the second electrode layer 3 is configured to sense a touch movement in a second direction, such as axis X. It is apparent that the electrode strips 21 of the first electrode layer 2 can be configured to sense a touch movement in axis X
- the electrode strips 31 of the second electrode layer 3 is configured to sense a touch movement in axis Y.
- the electrode strips 21 and 31 can have different shapes.
- the electrode strips can have shapes of diamond, square, or hexagon.
- a plurality of hexagonal electrodes 22 is connected to form an electrode strip of the electrode pattern 20a of the first electrode layer 2.
- a plurality of hexagonal electrodes 32 is connected to form an electrode strip of the electrode pattern 30a of the second electrode layer 3.
- the first electrode layer 2 and the second electrode layer 3 of the liquid crystal display are electrically coupled with the controller (not shown in figure).
- the controller not shown in figure.
- the object is separately and capacitively coupled to the first electrode layer 2 and the second electrode layer 3, so that, e.g., a touch signal corresponding to the X-axis coordinate and Y-axis coordinate of the touched position is generated and the signal is sent to the controller for further processing to determine the touched position.
- Fig. 6 is an exploded view showing a third embodiment of the present invention and Fig. 7 is a sectional view of a portion of a capacitive touch sensing layer.
- the third embodiment is similar to the first embodiment mentioned above. However, the difference between the two embodiments is that the third embodiment includes a capacitive touch sensing layer 4 formed on a top of the upper polarizing plate 14.
- the capacitive touch sensing layer 4 comprises an electrode pattern 40, which comprises a plurality of first electrode strips 41 and second electrode strips 42.
- the first electrode strips 41 are arranged in a direction substantially perpendicular to that of the second electrode strips 42.
- the second electrode strips 42 overlap on the first electrode strips 41, but the first and second electrode strips are not in direct physical contact.
- An insulating layer 43 is formed on the first electrode strips 41 at where the second electrode strips 42 overlap the first electrode strips 41 (as shown in Fig. 7), so that the second electrode strips 42 avoid direct physical contact with the first electrode strips 41.
- Each first electrode strip 41 is formed by a string of connected hexagonal electrodes 411 and each second electrode strip 42 is formed by a string of connected hexagonal electrodes 421. Due to the hexagonal shape, the first electrodes 41 and second electrodes 42 can effectively increase touch sensitivity.
- a capacitive touch device as described in the present invention with an object (e.g., a finger or a conductive object)
- the object is separately and capacitively coupled to the first electrode 41 and the second electrode 42, so that a touch signal according to the touched area size and corresponding to the X-axis and Y-axis coordinate of touched position is generated and sent to the controller for further signal processing to determine the touched position (not shown in diagram).
- Fig. 8 is an exploded view according to a fourth embodiment of the present invention.
- the fourth embodiment is similar to the third embodiment mentioned above. However, the difference between the two embodiments is that the fourth embodiment comprises a capacitive touch sensing layer 4 formed on the bottom of the polarizing plate 14. Similarly, when touching the liquid crystal display with an object, the object is separately and capacitively coupled to the first electrode 41 and the second electrode 42 to generate a signal corresponding to the touched position.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Human Computer Interaction (AREA)
- Nonlinear Science (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Mathematical Physics (AREA)
- Optics & Photonics (AREA)
- Quality & Reliability (AREA)
- Position Input By Displaying (AREA)
- Liquid Crystal (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011553258A JP2012520495A (en) | 2009-03-13 | 2009-11-12 | Liquid crystal display integrated with capacitive touch device |
EP09841360A EP2406684A4 (en) | 2009-03-13 | 2009-11-12 | Liquid crystal display integrated with capacitive touch devices |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN200910008184A CN101833184A (en) | 2009-03-13 | 2009-03-13 | Integrated structure of capacitive touch pad and liquid crystal display panel |
CN200910008184.5 | 2009-03-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2010102491A1 true WO2010102491A1 (en) | 2010-09-16 |
Family
ID=40984458
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CN2009/074916 WO2010102491A1 (en) | 2009-03-13 | 2009-11-12 | Liquid crystal display integrated with capacitive touch devices |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP2406684A4 (en) |
JP (2) | JP3152062U (en) |
KR (1) | KR20120000565A (en) |
CN (1) | CN101833184A (en) |
DE (1) | DE202009006774U1 (en) |
WO (1) | WO2010102491A1 (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013045262A (en) * | 2011-08-23 | 2013-03-04 | Dainippon Printing Co Ltd | Touch panel sensor with color filter, liquid-crystal display, and coordinate detector |
JP2013156975A (en) * | 2012-01-30 | 2013-08-15 | Samsung Display Co Ltd | Touch panel and display device including touch panel |
WO2013128209A1 (en) * | 2012-03-02 | 2013-09-06 | Novalia Ltd | Touch-sensitive input device |
WO2013128208A1 (en) * | 2012-03-02 | 2013-09-06 | Novalia Ltd | Touch-sensitive input device |
CN103677462A (en) * | 2012-09-03 | 2014-03-26 | 杰圣科技股份有限公司 | Touch panel and manufacturing method thereof |
JP2014075129A (en) * | 2012-10-02 | 2014-04-24 | Rtr-Tech Technology Co Ltd | Touch panel and manufacturing method of the same |
US9141238B2 (en) | 2012-04-26 | 2015-09-22 | Samsung Display Co., Ltd. | Flexible touch screen panel having a flexible polarizing film including a polarizer, a phase difference compensating layer, and a transparent adhesive, and flexible display device including the same |
CN105005408A (en) * | 2015-06-18 | 2015-10-28 | 江苏宇天港玻新材料有限公司 | Narrow line space multi-point touch liquid-crystal display device and production process thereof |
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JP5444967B2 (en) * | 2009-09-04 | 2014-03-19 | 大日本印刷株式会社 | Display device substrate and method of manufacturing display device substrate |
EP2521012B1 (en) * | 2009-12-28 | 2016-11-23 | Kyocera Corporation | Input device and display device provided with same |
JP5534174B2 (en) * | 2010-01-21 | 2014-06-25 | 大日本印刷株式会社 | Touch panel member, and display device and touch panel using the touch panel member |
TWI416199B (en) * | 2010-03-25 | 2013-11-21 | Winsky Technology Ltd | Touch panel |
KR101485774B1 (en) * | 2010-07-07 | 2015-01-28 | 동우 화인켐 주식회사 | Capacitance type touch panel, preparing method thereof and liquid crystal display device integrating the same |
US20130222317A1 (en) * | 2010-10-08 | 2013-08-29 | Sharp Kabushiki Kaisha | Display device, and process for manufacturing display device |
US9304347B2 (en) * | 2012-02-27 | 2016-04-05 | Amazon Technologies, Inc. | Touch panel assemblies and methods of manufacture |
US8937604B2 (en) * | 2012-02-28 | 2015-01-20 | Eastman Kodak Company | Touch-responsive capacitor with polarizing dielectric structure |
CN102778987A (en) * | 2012-06-29 | 2012-11-14 | 华为终端有限公司 | Projection type capacitance touch screen and preparation method thereof |
TWI472977B (en) * | 2012-09-13 | 2015-02-11 | Rtr Tech Technology Co Ltd | Touch panel and manufacturing method |
JP6446781B2 (en) | 2012-12-07 | 2019-01-09 | 三菱ケミカル株式会社 | Polyester resin for toner, method for producing the same, and toner |
CN103345319B (en) * | 2013-07-05 | 2016-08-24 | 南昌欧菲光显示技术有限公司 | Polarisation-filtration module and use the touch display screen of this polarisation-filtration module |
CN104281302A (en) * | 2013-07-05 | 2015-01-14 | 杰圣科技股份有限公司 | Touch structure and manufacturing method thereof |
CN103439823A (en) * | 2013-08-30 | 2013-12-11 | 北京京东方光电科技有限公司 | Touch type liquid crystal display device |
CN104570433B (en) * | 2013-10-15 | 2018-04-03 | 正达国际光电股份有限公司 | The manufacture method of electronic installation and electronic installation |
WO2016085182A1 (en) | 2014-11-27 | 2016-06-02 | Samsung Electronics Co., Ltd. | Flexible display device |
CN104460131A (en) * | 2014-12-10 | 2015-03-25 | 深圳市华星光电技术有限公司 | Display panel with touch function and manufacturing method of display panel |
JP2016143198A (en) * | 2015-01-30 | 2016-08-08 | シャープ株式会社 | Display device |
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- 2009-05-01 JP JP2009002882U patent/JP3152062U/en not_active Expired - Lifetime
- 2009-05-11 DE DE202009006774U patent/DE202009006774U1/en not_active Expired - Lifetime
- 2009-11-12 WO PCT/CN2009/074916 patent/WO2010102491A1/en active Application Filing
- 2009-11-12 EP EP09841360A patent/EP2406684A4/en not_active Withdrawn
- 2009-11-12 JP JP2011553258A patent/JP2012520495A/en active Pending
- 2009-11-12 KR KR1020117023691A patent/KR20120000565A/en not_active Application Discontinuation
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Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2013045262A (en) * | 2011-08-23 | 2013-03-04 | Dainippon Printing Co Ltd | Touch panel sensor with color filter, liquid-crystal display, and coordinate detector |
JP2013156975A (en) * | 2012-01-30 | 2013-08-15 | Samsung Display Co Ltd | Touch panel and display device including touch panel |
US9122362B2 (en) | 2012-01-30 | 2015-09-01 | Samsung Display Co., Ltd. | Touch panels and display devices having touch panels |
EP2620847A3 (en) * | 2012-01-30 | 2015-03-11 | Samsung Display Co., Ltd. | Touch panels and display devices having touch panels |
CN104220968A (en) * | 2012-03-02 | 2014-12-17 | 诺瓦利亚公司 | Touch-sensitive input device |
WO2013128208A1 (en) * | 2012-03-02 | 2013-09-06 | Novalia Ltd | Touch-sensitive input device |
WO2013128209A1 (en) * | 2012-03-02 | 2013-09-06 | Novalia Ltd | Touch-sensitive input device |
US9652092B2 (en) | 2012-03-02 | 2017-05-16 | Novalia Ltd | Touch-sensitive input device |
US9762235B2 (en) | 2012-03-02 | 2017-09-12 | Novalia Ltd | Touch-sensitive input device |
US9141238B2 (en) | 2012-04-26 | 2015-09-22 | Samsung Display Co., Ltd. | Flexible touch screen panel having a flexible polarizing film including a polarizer, a phase difference compensating layer, and a transparent adhesive, and flexible display device including the same |
CN103677462A (en) * | 2012-09-03 | 2014-03-26 | 杰圣科技股份有限公司 | Touch panel and manufacturing method thereof |
JP2014075129A (en) * | 2012-10-02 | 2014-04-24 | Rtr-Tech Technology Co Ltd | Touch panel and manufacturing method of the same |
CN105005408A (en) * | 2015-06-18 | 2015-10-28 | 江苏宇天港玻新材料有限公司 | Narrow line space multi-point touch liquid-crystal display device and production process thereof |
Also Published As
Publication number | Publication date |
---|---|
KR20120000565A (en) | 2012-01-02 |
JP2012520495A (en) | 2012-09-06 |
JP3152062U (en) | 2009-07-16 |
DE202009006774U1 (en) | 2009-08-20 |
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