CN101430440A - Touch control LCD device - Google Patents
Touch control LCD device Download PDFInfo
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- CN101430440A CN101430440A CNA2007101242883A CN200710124288A CN101430440A CN 101430440 A CN101430440 A CN 101430440A CN A2007101242883 A CNA2007101242883 A CN A2007101242883A CN 200710124288 A CN200710124288 A CN 200710124288A CN 101430440 A CN101430440 A CN 101430440A
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- liquid crystal
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- display device
- touch control
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Abstract
The invention provides a touch-control liquid crystal display device. The touch-control liquid crystal display device comprises a first basic board, a second basic board arranged opposite to the first basic board as well as a liquid crystal layer arranged between the first basic board and the second basic board. The surface of the second basic board far from the liquid crystal layer is provided with a capacitance sensing layer and a dielectric layer covering the capacitance sensing layer. The touch-control liquid crystal display device has the advantages of low cost, thin thickness, light weight and excellent display effect.
Description
Technical field
The present invention relates to a kind of touch control liquid crystal display device.
Background technology
In recent years,, have the touch control display apparatus, particularly touch control liquid crystal display device of touch-screen, be applied to more and more widely in production and the life with user-friendly for operation, simplicity development.Because the user can directly contact touch control liquid crystal display device with input information with hand or other object, thereby minimizing even elimination user are to other input equipment, as the dependence of keyboard, mouse, telepilot etc., user friendly greatly operation.
Current, touch-screen generally includes polytypes such as resistor-type, capacitor type, acoustic wave type, infra red type, it is generally rectangle transparent panel form, and adopt the mode of piling up to be arranged on display surface one side of liquid crystal indicator, and be connected to liquid crystal indicator and control corresponding device, thereby realize touch display function by flexible circuit board.
But in the touch control liquid crystal display device of above-mentioned stacked structure, touch-screen and liquid crystal indicator need to make respectively, and then are bonded together, and its manufacturing cost is higher.Touch-screen is bonded in the display surface of liquid crystal indicator usually by a bonding coat, this touch-screen and bonding coat increase the thickness of touch control liquid crystal display device and weight.Simultaneously, because this touch-screen and bonding coat have optical effects such as absorption, refraction and reflection to light, the light transmittance of liquid crystal indicator is reduced, and easily produce optical interference, cause display image distortion or variable color, reduce the display effect of touch control liquid crystal display device.
Summary of the invention
For solve prior art touch control liquid crystal display device manufacturing cost height, thickness is big, weight is big and the problem of display effect difference, is necessary to provide a kind of low cost of manufacture, thin thickness, in light weight and touch control liquid crystal display device that display effect is good.
A kind of touch-control display panel, it comprise one first substrate, one and second substrate and that is oppositely arranged of this first substrate be clipped in liquid crystal layer between this first substrate and this second substrate, this second substrate is provided with the dielectric layer that a capacitance sensing layer and covers this capacitance sensing layer away from the surface of this liquid crystal layer one side.
A kind of touch control liquid crystal display device, it comprise one first substrate, one and second substrate and that is oppositely arranged of this first substrate be clipped in liquid crystal layer between this first substrate and this second substrate, this second substrate is provided with the dielectric layer that a conductive film and covers this conductive film away from the surface of this liquid crystal layer one side, the capacity effect that utilizes this conductive film and extraneous conductor to form is realized the function of touch-control location.
Compared to prior art, second substrate surface of this touch control liquid crystal display device has a capacitance sensing layer and a dielectric layer, and passes through the coupling capacitance effect of this capacitance sensing layer and extraneous conductor, forms the capacitive touch screen structure, realizes touch display function.This touch control liquid crystal display device does not need extra touch-screen, and its low cost of manufacture, thin thickness, in light weight help the lightening development of touch control liquid crystal display device.Simultaneously, owing to do not use elements such as touch-screen and bonding coat, effectively reduce bad phenomenon such as light absorption, refraction, reflection and interference, the integral light-transmitting rate height and the display effect of this touch control liquid crystal display device are good.
Description of drawings
Fig. 1 is the side structure synoptic diagram of touch control liquid crystal display device first embodiment of the present invention.
Fig. 2 is the planar structure synoptic diagram of sensing layer shown in Figure 1.
Fig. 3 is the principle of work synoptic diagram of touch control liquid crystal display device shown in Figure 1.
Fig. 4 is the side structure synoptic diagram of touch control liquid crystal display device second embodiment of the present invention.
Embodiment
Seeing also Fig. 1, is the side structure synoptic diagram of touch control liquid crystal display device first embodiment of the present invention.This touch control liquid crystal display device 1 comprise one first substrate 21, one and second substrate 22 and that is oppositely arranged of this first substrate 21 be clipped in liquid crystal layer 23 between this first substrate 21 and this second substrate 22.
This first substrate 21 is provided with one first polaroid 211 away from the surface of these liquid crystal layer 23 1 sides.This second substrate 22 is away from the surface of these liquid crystal layer 23 1 sides be cascading a sensing layer 24 and one second polaroid 25, wherein these sensing layer 24 contiguous these second substrates 22.
This second polaroid 25 has polarity and dielectricity concurrently and has certain physical strength, thereby both can realize the polarisation effect, makes this sensing layer 24 and extraneous electrical isolation again.This second polaroid 25 also is equivalent to a protective seam, can protect this sensing layer 24 to avoid the external object scratch.
Seeing also Fig. 2, is the planar structure synoptic diagram of sensing layer 24 shown in Figure 1.This sensing layer 24 comprises a conductive layer 241, an electrode 242 and four electrode wires L
1, L
2, L
3, L
4
This conductive layer 241 is made by the homogeneous transparent conductive material, as indium tin oxide films.This electrode 242 is hollow, rectangular electrodes, is made by low resistivity material, as printed silver slurry or tin indium oxide etc.This electrode 242 is arranged on these conductive layer 241 edges and and these conductive layer 241 electrical connections.This electrode 242 also can be four strip electrodes, and is separately positioned on four edges of this conductive layer 241.These four electrode wires L
1, L
2, L
3, L
4One end is electrically connected four limits of this electrode 242 respectively, and the other end is electrically connected peripheral control unit (figure does not show) and is used for transmission of electric signals.
Seeing also Fig. 3, is the principle of work synoptic diagram of this touch control liquid crystal display device 1.When this touch control liquid crystal display device 1 is in running order, these four electrode wires L
1, L
2, L
3, L
4Receive identical ac voltage signal simultaneously from peripheral control unit, and transfer to this conductive layer 241 by this electrode 242.Because these four electrode wires L
1, L
2, L
3, L
4The voltage signal of transmission is identical, so the current potential of these electrode 242 each points is identical, and keeps current potential dynamically consistent.Simultaneously, these four electrode wires L
1, L
2, L
3, L
4Between no-voltage poor, also no current is by these four electrode wires L
1, L
2, L
3, L
4
When touching any 1 P of this second polaroid 25 with finger (figure do not show), because finger is a conductor, it can be used as a capacitor plate, this conductive layer 241 also can be used as a capacitor plate, this second polaroid 25 is as a dielectric layer, and then this finger, this conductive layer 241 and second polaroid 25 that is clipped between the two form a coupling capacitance C.Because there is voltage difference by human body grounding in finger between the earth and this conductive layer 241.Then because the effect of coupling capacitance C produces couple current by this coupling capacitance C and by human body inflow the earth.This couple current equals from these four electrode wires L
1, L
2, L
3, L
4Flow out electric current I respectively
1, I
2, I
3, I
4Sum.
According to electric capacity theory and experimental verification, these four electrode wires L
1, L
2, L
3, L
4Have different distance Y a, Xa, Yb, Xb between four limits at place and this P, and these four electrode wires L that flow through
1, L
2, L
3, L
4Electric current I
1, I
2, I
3, I
4Proportional with this corresponding distance Y a, Xa, Yb, Xb.By calculating this four electric current I
1, I
2, I
3, I
4Ratio, can calculate this P to distance Y a, the Xa on these electrode 242 each limits, the proportionate relationship of Yb, Xb, thereby determine the pairing control coordinate of this P, and according to the corresponding control signal that produces of this coordinate.
Compared to prior art, between this touch control liquid crystal display device 1 second substrate 22 and this second polaroid 25 sensing layer 24 is set, and passes through the electric action of this sensing layer 24 and human body, form the capacitor type touch-control structure, to realize touch controllable function.This touch control liquid crystal display device 1 does not need extra touch-screen, and its low cost of manufacture, thin thickness, in light weight help the lightening development of this touch control liquid crystal display device 1, and saves material, helps the cost of this reduction touch control liquid crystal display device 1.Simultaneously, because this touch control liquid crystal display device 1 avoids using elements such as touch-screen and bonding coat, light needn't pass elements such as touch-screen and bonding coat, can reduce bad phenomenon such as light absorption, refraction, reflection and light interference, and transmittance height, the display effect of touch control liquid crystal display device 1 are good.
Seeing also Fig. 4, is the side structure synoptic diagram of touch control liquid crystal display device second embodiment of the present invention.Touch control liquid crystal display device 1 structural similarity of the touch control liquid crystal display device 2 of this embodiment and first embodiment, its key distinction is: a further stacked electro-magnetic screen layer 37 and the insulation course 36 of being provided with between second substrate 32 and the sensing layer 34.These electro-magnetic screen layer 37 contiguous these second substrates 32, these insulation course 36 contiguous these sensing layers 34.
The electric signal that this electro-magnetic screen layer 37 is used to shield between this sensing layer 34 and this touch control liquid crystal display device 2 inside disturbs, and avoids electric signal to disturb and influences accurate positioning and display effect.This electro-magnetic screen layer 37 is a transparent conductive film, as indium tin oxide films etc.This insulation course 36 is to be made by transparent insulation material, and it is used to make mutually insulated between this electro-magnetic screen layer 37 and this sensing layer 34, avoids influencing the positioning function of this sensing layer 34.
Because the electromagnetic shielding action of this electro-magnetic screen layer 37 has avoided the electric signal of this sensing layer 34 and these touch control liquid crystal display device 2 inside to disturb, this touch control liquid crystal display device 2 has higher accurate positioning and better display effect.
Claims (10)
1. touch control liquid crystal display device, it comprise one first substrate, one and second substrate and that is oppositely arranged of this first substrate be sandwiched in liquid crystal layer between this first substrate and this second substrate, it is characterized in that: this second substrate is provided with the dielectric layer that a capacitance sensing layer and covers this capacitance sensing layer away from the surface of this liquid crystal layer one side.
2. touch control liquid crystal display device as claimed in claim 1 is characterized in that: this capacitance sensing layer comprises the transparency conducting layer of a rectangle.
3. touch control liquid crystal display device as claimed in claim 2 is characterized in that: this capacitance sensing layer further comprises the electrode of a hollow, rectangular, and four limit correspondences of this electrode are arranged on the fringe region of this transparency conducting layer, and are electrically connected this transparency conducting layer.
4. touch control liquid crystal display device as claimed in claim 3 is characterized in that: this capacitance sensing layer further comprises four electrode wires, corresponding respectively four limits that are electrically connected this electrode of an end of these four electrode wires.
5. touch control liquid crystal display device as claimed in claim 2 is characterized in that: this capacitance sensing layer further comprises four stripe shape electrodes, and these four stripe shape electrodes are separately positioned on four edges of this transparency conducting layer, and and this transparency conducting layer electrical connection.
6. touch control liquid crystal display device as claimed in claim 1, it is characterized in that: this touch control display apparatus further comprises an insulation course and an electro-magnetic screen layer, this insulation course and this electro-magnetic screen layer are stacked to be arranged between this capacitance sensing layer and this second substrate, contiguous this second substrate of this electro-magnetic screen layer.
7. touch control liquid crystal display device, it comprise one first substrate, one and second substrate and that is oppositely arranged of this first substrate be clipped in liquid crystal layer between this first substrate and this second substrate, it is characterized in that: this second substrate is provided with the dielectric layer that a conductive film and covers this conductive film away from the surface of this liquid crystal layer one side, the capacity effect that utilizes this conductive film and extraneous conductor to form is realized the function of touch-control location.
8. touch control liquid crystal display device as claimed in claim 7 is characterized in that: this conductive film is a rectangle, and its four fringe region is provided with an electrode respectively, and each electrode all is electrically connected with this conductive film.
9. touch control liquid crystal display device as claimed in claim 8 is characterized in that: each electrode is electrically connected an electrode wires respectively, and this electrode wires is used for to this conductive film transmission of electric signals.
10. touch control liquid crystal display device as claimed in claim 7, it is characterized in that: this touch control liquid crystal display device further comprises an insulation course and an electro-magnetic screen layer, this insulation course and this electro-magnetic screen layer are stacked to be arranged between this conductive film and this second substrate, and contiguous this second substrate of this electro-magnetic screen layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101242883A CN101430440A (en) | 2007-11-07 | 2007-11-07 | Touch control LCD device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101242883A CN101430440A (en) | 2007-11-07 | 2007-11-07 | Touch control LCD device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101430440A true CN101430440A (en) | 2009-05-13 |
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ID=40645932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101242883A Pending CN101430440A (en) | 2007-11-07 | 2007-11-07 | Touch control LCD device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101430440A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102043184A (en) * | 2009-10-09 | 2011-05-04 | Lg化学株式会社 | Integrated touch polarizer and touch panel comprising the same |
| CN102375257A (en) * | 2010-08-25 | 2012-03-14 | 毅齐科技股份有限公司 | Touch panel structure of display |
| CN102955305A (en) * | 2012-11-30 | 2013-03-06 | 信利半导体有限公司 | Touch display |
| CN102062963B (en) * | 2009-11-12 | 2013-04-10 | 群康科技(深圳)有限公司 | Touch panel and touch display device |
| CN103399678A (en) * | 2013-08-02 | 2013-11-20 | 敦泰科技有限公司 | Self-capacitance touch screen and touch display device |
| CN104007863A (en) * | 2013-02-26 | 2014-08-27 | 北京京东方光电科技有限公司 | Single-layer touch screen and manufacturing method thereof and touch screen displayer |
| CN104040644A (en) * | 2012-01-06 | 2014-09-10 | 捷恩智株式会社 | Transparent electroconductive film |
| CN104570433A (en) * | 2013-10-15 | 2015-04-29 | 正达国际光电股份有限公司 | Electronic device and manufacturing method thereof |
| US9721746B2 (en) | 2013-10-15 | 2017-08-01 | G-Tech Optoelectronics Corporation | Display device and method for manufacturing the same |
-
2007
- 2007-11-07 CN CNA2007101242883A patent/CN101430440A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102043184B (en) * | 2009-10-09 | 2013-10-09 | Lg化学株式会社 | Integrated touch polarizer and touch panel comprising the same |
| CN102043184A (en) * | 2009-10-09 | 2011-05-04 | Lg化学株式会社 | Integrated touch polarizer and touch panel comprising the same |
| CN102062963B (en) * | 2009-11-12 | 2013-04-10 | 群康科技(深圳)有限公司 | Touch panel and touch display device |
| CN102375257A (en) * | 2010-08-25 | 2012-03-14 | 毅齐科技股份有限公司 | Touch panel structure of display |
| CN104040644A (en) * | 2012-01-06 | 2014-09-10 | 捷恩智株式会社 | Transparent electroconductive film |
| US9756722B2 (en) | 2012-01-06 | 2017-09-05 | Jnc Corporation | Transparent electroconductive film |
| TWI595508B (en) * | 2012-01-06 | 2017-08-11 | 捷恩智股份有限公司 | Transparent conductive film and image display device |
| CN102955305B (en) * | 2012-11-30 | 2015-12-02 | 信利半导体有限公司 | A kind of touch display |
| CN102955305A (en) * | 2012-11-30 | 2013-03-06 | 信利半导体有限公司 | Touch display |
| CN104007863A (en) * | 2013-02-26 | 2014-08-27 | 北京京东方光电科技有限公司 | Single-layer touch screen and manufacturing method thereof and touch screen displayer |
| US10067612B2 (en) | 2013-02-26 | 2018-09-04 | Boe Technology Group Co., Ltd. | One glass solution touch panel and manufacturing method thereof and touch panel display |
| CN103399678A (en) * | 2013-08-02 | 2013-11-20 | 敦泰科技有限公司 | Self-capacitance touch screen and touch display device |
| CN104570433A (en) * | 2013-10-15 | 2015-04-29 | 正达国际光电股份有限公司 | Electronic device and manufacturing method thereof |
| US9721746B2 (en) | 2013-10-15 | 2017-08-01 | G-Tech Optoelectronics Corporation | Display device and method for manufacturing the same |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20090513 |