CN104267864A - On-cell touch liquid crystal display - Google Patents
On-cell touch liquid crystal display Download PDFInfo
- Publication number
- CN104267864A CN104267864A CN201410556236.3A CN201410556236A CN104267864A CN 104267864 A CN104267864 A CN 104267864A CN 201410556236 A CN201410556236 A CN 201410556236A CN 104267864 A CN104267864 A CN 104267864A
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- CN
- China
- Prior art keywords
- alignment film
- cell touch
- guarded electrode
- electrode line
- lcd display
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- 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
-
- 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
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04107—Shielding in digitiser, i.e. guard or shielding arrangements, mostly for capacitive touchscreens, e.g. driven shields, driven grounds
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Liquid Crystal (AREA)
- Position Input By Displaying (AREA)
Abstract
The invention provides an on-cell touch liquid crystal display. The on-cell touch liquid crystal display comprises a lower glass substrate, a lower polarizer plate, a lower alignment film, an upper alignment film, a liquid crystal layer, an upper polarizer plate, a touch electrode plate, an upper glass substrate and a plurality of shielding electrode wires, wherein a plurality of alignment projections are respectively arranged on the upper polarizer plate and the lower polarizer plate; the shielding electrode wires are all electrically connected to the ground electrode ; the shielding electrode wires are arranged on at least one of the upper alignment film and the lower alignment film; the shielding electrode wires penetrate through the projection area of each display unit on the upper alignment film or the lower alignment film. According to the on-cell touch liquid crystal display, the crosstalk of the touch electrode plates on TFT (Thin Film Transistor) is reduced by setting the shielding electrode wires electrically connected with the ground electrode, meanwhile the thickness of the display screen cannot be increased, and the quality of the on-cell touch liquid crystal display is improved.
Description
Technical field
The present invention relates to touch LCD display, particularly relate to a kind of on-cell touch LCD display.
Background technology
The development of electronic product, current appearance touches and shows the On-cell touch LCD display technology combined, this display technique as shown in Figure 1, mainly Touching electrode 11 is arranged between upper Polarizer 12 and glass substrate 13 by changing into independent of liquid crystal display before, and forms touch control electrode by vacuum sputtering on glass substrate 13.This kind of basic structure can make this display screen become thinner on the basis ensureing display hardness.But this on-cell is due to crosstalk mutual between Touching electrode and TFT, there will be TFT unusual switch.In addition, in Fig. 1, label 14 is liquid crystal layer, and label 15 is lower glass substrate, and label 16 is lower polaroid, and label 17 is backlight module.
Fig. 2 is the another kind of solution for cross-interference issue.Importantly on the polaroid 21 of visible surface side, arrange one deck shielding electrode layer 211, opposite side arranges touch electrode layer 212, but the setting of this shielding electrode layer 211 due to the gate electrode from TFT distant, its resistance to crosstalk ability is poor.In addition, relative or poor only by simple its resistance to crosstalk effect of guarded electrode connecting earth terminal, particularly when TFT is in critical conduction or cut-off state, the poor effect performance of this resistance to crosstalk more outstanding.In Fig. 2, label 22 is glass substrate, and label 23 is lower polaroid, and label 24 is liquid crystal layer.
Summary of the invention
The object of the present invention is to provide a kind of on-cell touch LCD display, this kind of on-cell touch LCD display reduces crosstalk by several guarded electrode lines.
The invention provides a kind of on-cell touch LCD display for achieving the above object, comprising: lower glass substrate, the lower polaroid be located in described lower glass substrate, the lower alignment film be located on described lower polaroid, the upper alignment film be located on described lower alignment film, be located at liquid crystal layer between described upper alignment film and lower alignment film, the upper polaroid be located on described upper alignment film, the Touching electrode be located on described upper polaroid, be located at top glass substrate on described Touching electrode and several guarded electrode lines; Described upper alignment film and lower alignment film are equipped with several orientation projection, several guarded electrode lines described are all electrically connected to ground wire, described upper alignment film and lower alignment film at least one be provided with described guarded electrode line, described guarded electrode line is through the view field of each display unit on upper alignment film or lower alignment film.
Described guarded electrode line is located near the orientation projection of alignment film or lower alignment film.
Described guarded electrode line is located in alignment film or lower alignment film.
Described guarded electrode line is located in alignment film and lower alignment film simultaneously.
Described guarded electrode line is located on the surface of contact of alignment film and upper polaroid.
Described guarded electrode line is located on the surface of contact of lower alignment film and lower polaroid.
Described guarded electrode line is located on the surface of contact of alignment film and upper polaroid and the surface of contact of lower alignment film and lower polaroid simultaneously.
Described guarded electrode line adopts gaseous phase deposition, vacuum sputtering or laser ablation to be formed.
Guarded electrode line described in each is connected with ground wire by an Absorption Capacitance.
Adopt such scheme, the guarded electrode line arranged in a kind of on-cell touch LCD display of the present invention is by decreasing the crosstalk of Touching electrode to TFT with the connection of ground wire, can also ensure that the thickness of display screen does not increase simultaneously, improve the quality of on-cell touch LCD display.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, by the specific embodiment of the present invention describe in detail, will make technical scheme of the present invention and other beneficial effect apparent.
In accompanying drawing,
Fig. 1 is a kind of common on-cell touch LCD display device structure schematic diagram.
Fig. 2 is another kind of on-cell touch LCD display device structure schematic diagram.
Fig. 3 is the structural representation of an embodiment in a kind of on-cell touch LCD of the present invention display embodiment one.
Fig. 4 is the structural representation of an embodiment in a kind of on-cell touch LCD of the present invention display embodiment two.
Fig. 5 is the structural representation of an embodiment in a kind of on-cell touch LCD of the present invention display embodiment three.
Fig. 6 is guarded electrode line schematic wiring diagram in a kind of on-cell touch LCD of the present invention display embodiment one to three.
Fig. 7 is guarded electrode line schematic wiring diagram in a kind of on-cell touch LCD of the present invention display embodiment four.
Embodiment
For further setting forth the technological means and effect thereof that the present invention takes, be described in detail below in conjunction with the preferred embodiments of the present invention and accompanying drawing thereof.
Embodiment one:
Consult Fig. 3, the invention provides a kind of on-cell touch LCD display, comprising: lower glass substrate 37, the lower polaroid 38 be located in described lower glass substrate 37, the lower alignment film 33 be located on described lower polaroid 38, the upper alignment film 32 be located on described lower alignment film 32, be located at liquid crystal layer 34 between described upper alignment film 32 and lower alignment film 33, the upper polaroid 36 be located on described upper alignment film 32, the Touching electrode 4 be located on described upper polaroid 36, be located at top glass substrate 35 on described Touching electrode 4 and several guarded electrode lines 5.Described upper alignment film 32 and lower alignment film 33 are equipped with several orientation projection 31, and several guarded electrode lines 5 described are all electrically connected to ground wire.
Consult Fig. 6, described guarded electrode line 5 is located in described upper alignment film 32 simultaneously, and described guarded electrode line 5 is through the view field of each display unit on upper alignment film 32 or lower alignment film 33.So be not limited thereto, described guarded electrode line is located in described lower alignment film (not shown).
This display unit X can be made when being subject to Touching electrode 4 electric capacity and changing the electric field change brought by this guarded electrode line 5, will intensity and the speed of change be weakened, thus reduce this Touching electrode 4 to the impact of TFT.
Embodiment two:
Consult Fig. 4, compared with embodiment one, present embodiment is provided with guarded electrode line 5 in upper alignment film 32 and lower alignment film 33 simultaneously, and such set-up mode further can reduce the crosstalk of Touching electrode 4 couples of TFT.
But such setting, also reduces the deflecting electric field driving liquid crystal deflecting element simultaneously.For the increase driving voltage that this problem can be suitable, the increase of this driving voltage itself also can overcome the crosstalk of Touching electrode 4.
Embodiment three:
Consult Fig. 5, in the present embodiment, described guarded electrode line 5 is located at alignment film 32 with on the surface of contact of upper polaroid 36, and described guarded electrode line 5 is generally formed by gaseous phase deposition, vacuum sputtering or laser ablation.Arrange guarded electrode line 5 on upper alignment film 32 surface relatively simple in manufacture craft, it is convenient to realize, and cost is also relatively low.So be not limited thereto, on the surface of contact that described guarded electrode line can also be located at lower alignment film and lower polaroid individually or simultaneously (not shown).
Embodiment four:
Consult Fig. 7, the difference of present embodiment and above-mentioned embodiment is only, described guarded electrode line 5 is connected with earth terminal GND by an Absorption Capacitance 6.This Absorption Capacitance 6 can reduce the transition of the changing electric field that Touching electrode 4 capacitance variations is brought, and reduces crosstalk bur.
In sum, the invention provides the guarded electrode line that arranges in a kind of on-cell touch LCD display by decreasing the crosstalk of Touching electrode to TFT with the connection of ground wire, can also ensure that the thickness of display screen does not increase simultaneously, improve the quality of on-cell touch LCD display.
The above, for the person of ordinary skill of the art, can make other various corresponding change and distortion according to technical scheme of the present invention and technical conceive, and all these change and be out of shape the protection domain that all should belong to the claims in the present invention.
Claims (9)
1. an on-cell touch LCD display, it is characterized in that, comprising: lower glass substrate, the lower polaroid be located in described lower glass substrate, the lower alignment film be located on described lower polaroid, the upper alignment film be located on described lower alignment film, be located at liquid crystal layer between described upper alignment film and lower alignment film, the upper polaroid be located on described upper alignment film, the Touching electrode be located on described upper polaroid, be located at top glass substrate on described Touching electrode and several guarded electrode lines; Described upper alignment film and lower alignment film are equipped with several orientation projection, several guarded electrode lines described are all electrically connected to ground wire, described upper alignment film and lower alignment film at least one be provided with described guarded electrode line, described guarded electrode line is through the view field of each display unit on upper alignment film or lower alignment film.
2. on-cell touch LCD display according to claim 1, is characterized in that, described guarded electrode line is located near the orientation projection of alignment film or lower alignment film.
3. on-cell touch LCD display according to claim 2, is characterized in that, described guarded electrode line is located in alignment film or lower alignment film.
4. on-cell touch LCD display according to claim 2, is characterized in that, described guarded electrode line is located in alignment film and lower alignment film simultaneously.
5. on-cell touch LCD display according to claim 2, is characterized in that, described guarded electrode line is located on the surface of contact of alignment film and upper polaroid.
6. on-cell touch LCD display according to claim 2, is characterized in that, described guarded electrode line is located on the surface of contact of lower alignment film and lower polaroid.
7. on-cell touch LCD display according to claim 2, is characterized in that, described guarded electrode line is located on the surface of contact of alignment film and upper polaroid and the surface of contact of lower alignment film and lower polaroid simultaneously.
8. the on-cell touch LCD display according to any one of claim 5 to 7, is characterized in that, described guarded electrode line adopts gaseous phase deposition, vacuum sputtering or laser ablation to be formed.
9. on-cell touch LCD display according to claim 1, is characterized in that, guarded electrode line described in each is connected with ground wire by an Absorption Capacitance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410556236.3A CN104267864B (en) | 2014-10-20 | 2014-10-20 | A kind of on cell touch LCD display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410556236.3A CN104267864B (en) | 2014-10-20 | 2014-10-20 | A kind of on cell touch LCD display |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104267864A true CN104267864A (en) | 2015-01-07 |
| CN104267864B CN104267864B (en) | 2016-11-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410556236.3A Expired - Fee Related CN104267864B (en) | 2014-10-20 | 2014-10-20 | A kind of on cell touch LCD display |
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| CN (1) | CN104267864B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105183212A (en) * | 2015-08-04 | 2015-12-23 | 武汉华星光电技术有限公司 | Touch screen LCD panel and touch screen mobile phone |
| CN106354313A (en) * | 2016-08-29 | 2017-01-25 | 厦门天马微电子有限公司 | Touch display panel and touch display device |
| CN111124174A (en) * | 2019-11-25 | 2020-05-08 | 南昌欧菲显示科技有限公司 | Touch screen and electronic device |
| CN114913826A (en) * | 2022-05-16 | 2022-08-16 | 星源电子科技(深圳)有限公司 | Manufacturing method of low-crosstalk liquid crystal module |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103543544A (en) * | 2012-07-16 | 2014-01-29 | 瀚宇彩晶股份有限公司 | Touch control and liquid crystal lens module and display device with touch control and liquid crystal lens module |
| WO2014116738A1 (en) * | 2013-01-22 | 2014-07-31 | Cambrios Technologies Corporation | Nanostructure transparent conductors having high thermal stability for esd protection |
| CN104090677A (en) * | 2014-06-20 | 2014-10-08 | 京东方科技集团股份有限公司 | Embedded-type touch screen and display device |
| CN204102107U (en) * | 2014-10-20 | 2015-01-14 | 深圳同兴达科技股份有限公司 | A kind of on-cell touch LCD display |
-
2014
- 2014-10-20 CN CN201410556236.3A patent/CN104267864B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103543544A (en) * | 2012-07-16 | 2014-01-29 | 瀚宇彩晶股份有限公司 | Touch control and liquid crystal lens module and display device with touch control and liquid crystal lens module |
| WO2014116738A1 (en) * | 2013-01-22 | 2014-07-31 | Cambrios Technologies Corporation | Nanostructure transparent conductors having high thermal stability for esd protection |
| CN104090677A (en) * | 2014-06-20 | 2014-10-08 | 京东方科技集团股份有限公司 | Embedded-type touch screen and display device |
| CN204102107U (en) * | 2014-10-20 | 2015-01-14 | 深圳同兴达科技股份有限公司 | A kind of on-cell touch LCD display |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105183212A (en) * | 2015-08-04 | 2015-12-23 | 武汉华星光电技术有限公司 | Touch screen LCD panel and touch screen mobile phone |
| CN106354313A (en) * | 2016-08-29 | 2017-01-25 | 厦门天马微电子有限公司 | Touch display panel and touch display device |
| CN111124174A (en) * | 2019-11-25 | 2020-05-08 | 南昌欧菲显示科技有限公司 | Touch screen and electronic device |
| CN114913826A (en) * | 2022-05-16 | 2022-08-16 | 星源电子科技(深圳)有限公司 | Manufacturing method of low-crosstalk liquid crystal module |
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| Publication number | Publication date |
|---|---|
| CN104267864B (en) | 2016-11-16 |
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