CN103034377A - Embedded touch panel - Google Patents
Embedded touch panel Download PDFInfo
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- CN103034377A CN103034377A CN2011103333864A CN201110333386A CN103034377A CN 103034377 A CN103034377 A CN 103034377A CN 2011103333864 A CN2011103333864 A CN 2011103333864A CN 201110333386 A CN201110333386 A CN 201110333386A CN 103034377 A CN103034377 A CN 103034377A
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- substrate
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- thrust
- control panel
- embedded touch
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- 238000000034 method Methods 0.000 claims abstract description 17
- 230000005540 biological transmission Effects 0.000 claims description 17
- 239000002245 particle Substances 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 11
- 239000003292 glue Substances 0.000 claims description 9
- 239000004973 liquid crystal related substance Substances 0.000 claims description 8
- 229910010272 inorganic material Inorganic materials 0.000 claims description 3
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- 229910052751 metal Inorganic materials 0.000 claims description 3
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- 230000008054 signal transmission Effects 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
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- 239000010409 thin film Substances 0.000 description 8
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical group [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 5
- 238000001259 photo etching Methods 0.000 description 5
- FZFUUSROAHKTTF-UHFFFAOYSA-N 2,2',3,3',6,6'-hexachlorobiphenyl Chemical compound ClC1=CC=C(Cl)C(C=2C(=C(Cl)C=CC=2Cl)Cl)=C1Cl FZFUUSROAHKTTF-UHFFFAOYSA-N 0.000 description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
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- 239000010931 gold Substances 0.000 description 3
- 229910052737 gold Inorganic materials 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
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Abstract
An embodiment of the present invention provides an in-cell touch panel having a touch signal transmitting area and a touch sensing area, including: the capacitive sensing electrode is arranged on the touch sensing area of the first substrate, the second substrate is arranged opposite to the first substrate, the conductive layer is arranged on the touch signal transmission area of the second substrate, and the protrusion is arranged between the first substrate and the second substrate and positioned on the touch signal transmission area, wherein the protrusion is electrically connected with the capacitive sensing electrode and is contacted with the conductive layer on the second substrate, so that the touch signal of the capacitive sensing electrode is transmitted to the second substrate through the protrusion. The embedded touch panel of the embodiment of the invention not only can reduce the whole thickness of the touch display device, but also can avoid the scratch problem caused by the double-sided process of the current touch panel on the color filter substrate, thereby improving the manufacturing yield of the touch panel.
Description
Technical field
The present invention relates to a kind of contact panel, particularly a kind of signal transfer mode of condenser type embedded touch control panel.
Background technology
Present contact panel can use resistance-type, condenser type or other modes, such as infrared ray or surface acoustic wave etc., reach the effect of touching induction, the capacitance that wherein produces between capacitance type touch-control panel utilization monitoring touching place and the capacitive induction electrode is judged the position of touching, just can not reach the touch-control effect because capacitance type touch-control panel does not need to exert pressure, be the Developing mainstream of following contact panel.
Present capacitance type touch-control panel can be divided into two kinds, and a kind of is external hanging touch panel, and it is added on capacitance type touch-control panel outside the display panel outward, but this mode can cause the integral thickness of touch control display apparatus to increase.Another kind of mode is the back side (on cell) that capacitive touch control element is produced on colored filter substrate, but the capacitive touch control element that this mode can cause making first is subject to the scratch infringement in the technique of follow-up colored filter substrate.
Therefore, industry is needed a kind of capacitance type touch-control panel badly, and it can overcome the problems referred to above, reduces the integral thickness of touch control display apparatus, and avoids capacitive touch control element to suffer damage in the subsequent technique of making display equipment.
Summary of the invention
In order to overcome the defective of prior art, according to one embodiment of the invention, a kind of embedded touch control panel is provided, it has touching signals transmission region and touch-control sensing district, this embedded touch control panel comprises: first substrate, the capacitance type sensing electrode is arranged in the touch-control sensing district of first substrate, second substrate and first substrate subtend arrange, conductive layer is arranged on the touching signals transmission region of second substrate, thrust is arranged between first substrate and the second substrate, and be positioned on the touching signals transmission region, wherein thrust and capacitance type sensing electrode are electrically connected, and contact with the conductive layer on the second substrate, so that the touching signals of capacitance type sensing electrode is passed to second substrate via thrust.
The embedded touch control panel of the embodiment of the invention can reduce the integral thickness of touch control display apparatus compared to external hanging touch panel.In addition, embodiments of the invention can also avoid present contact panel to carry out the scratch problem that double-side technology causes at colored filter substrate, improve whereby the fine ratio of product of contact panel.
For above-mentioned purpose of the present invention, feature and advantage can be become apparent, below cooperate appended accompanying drawing, be described in detail below:
Description of drawings
Fig. 1 is the floor map that shows according to the contact panel of one embodiment of the invention.
Fig. 2 is the profile line 2-2 ' that shows along Fig. 1, the diagrammatic cross-section of the contact panel of one embodiment of the invention.
[main description of reference numerals]
100～contact panel;
100A～touch-control sensing district;
100B～touching signals transmission region;
100C～periphery circuit region;
102～first substrate;
104～the first conductive layers;
106,110,112～insulation course;
108～the second conductive layers;
114～thrust;
115～photosensitive type sept;
116～black-matrix layer;
118～colored filter;
120～the first transparency conducting layers;
122～the second transparency conducting layers (common electrode);
124,126～both alignment layers;
128～liquid crystal layer;
130～second substrate;
132～conductive layer;
134～frame glue;
136～flexible PCB (FPC);
S～capacitance touching control induction electrode structure;
CF～chromatic filter layer.
Embodiment
Embodiments of the invention provide a kind of embedded touch control panel of capacitive sensing, it is arranged on the capacitance touching control induction electrode inboard of colored filter substrate, be positioned at the same side of colored filter substrate with chromatic filter layer, can solve whereby traditional contact panel capacitive touch control element is produced on the scratch problem that cause at the back side (on cell) of colored filter substrate, avoid the capacitance touching control induction electrode to sustain damage, compared to external hanging touch panel, the embedded touch control panel of the embodiment of the invention can reduce the integral thickness of touch control display apparatus simultaneously.
But in the embedded touch control panel of the embodiment of the invention, the touching signals of the capacitance touching control induction electrode of colored filter substrate side need to be passed to the thin film transistor base plate side.General traditional method is for by the conducting particles in frame glue (seal) material of display panel surrounding zone, and the signal of colored filter substrate side is sent to the thin film transistor base plate side.Yet, because the doping of conducting particles in the frame glue material only has 0.4wt%, therefore in some zone, may exist without conducting particles, cause the transmission of touching signals bad; The number that perhaps transmits the conducting particles that each signal line (signal trace) of touching signals contacts can be different, cause the problems such as the transmission of touching signals is inhomogeneous.In addition, traditional method utilizes the conducting particles in the frame glue to carry out the transmission of touching signals, will so that originally transmit the common electrode of display panel voltage (Vcom) but the signal usable floor area reduce, cause the Vcom signal transmission of display panel bad or uneven, and then the problem of the display frame bad of deriving.
Therefore, in the embedded touch control panel of the embodiment of the invention, utilization is arranged on the thrust between colored filter substrate and the thin film transistor base plate, and the touching signals of the capacitance touching control induction electrode of colored filter substrate side is passed to the thin film transistor base plate side.
See also Fig. 1, it shows the floor map of the contact panel of one embodiment of the invention.Contact panel 100 has touch-control sensing district 100A and touching signals transmission region 100B, is useful in addition the periphery circuit region 100C of input display.In addition, has frame glue 134 at the touch-control sensing district 100A of contact panel 100 and the periphery of touching signals transmission region 100B.
Having a plurality of capacitive induction electrodes 108 in the touch-control sensing district 100A of the upper substrate of contact panel 100, for example is indium tin oxide (the indium tin oxide of rhombus; ITO) electrode, these capacitive induction electrodes 108 are the form arranged in series to go and to be listed as respectively, the capacitive induction electrode 108 resulting touching signals of every delegation and each row can be passed to infrabasal plate by the thrust 114 on the touching signals transmission region 100B, and touching signals can be sent to by the conductive layer on the infrabasal plate flexible PCB (flexible print circuit; FPC) 136, integrated circuit (IC) (not shown) that is sent in the display device via flexible PCB 136 again carries out the processing of touching signals.
See also Fig. 2, it shows the profile line 2-2 ' along Fig. 1, the diagrammatic cross-section of the contact panel of one embodiment of the invention.Contact panel 100 comprises first substrate 102, it for example is colored filter (color filter substrate) substrate, at first form capacitance touching control induction electrode structure S in the inboard of first substrate 102, it comprises the first conductive layer 104, the first insulation course 106, the second conductive layer 108 and the second insulation course 110, wherein the first conductive layer 104 can be metal level, its material for example is gold, silver, copper, aluminium, titanium, the metal materials such as molybdenum or aluminium neodymium alloy (AlNd), the second conductive layer 108 for example is the transparency conducting layer of indium tin oxide (ITO) layer or other material, and the material of the first insulation course 106 and the second insulation course 110 for example is acryl resin, silicon nitride, the material such as monox or silicon oxynitride.The second conductive layer 108 is the same delegation directions X shown in Fig. 1) rhombus condenser type induction electrode, the first conductive layer 104 does not show the rhombus condenser type induction electrode 108 of same row (Y-direction) for connecting bridge formation (bridge) structure with the rhombus condenser type induction electrode 108 of delegation in Fig. 2.
Then, above the capacitance touching control induction electrode structure S of first substrate 102, form the 3rd insulation course 112, the material of the 3rd insulation course 112 is such as being the materials such as acryl resin, silicon nitride, monox or silicon oxynitride, then form chromatic filter layer CF at the 3rd insulation course 112, it comprises black-matrix layer (black matrix; BM) 116 and the colored filter (color filter:CF) 118 that comprises red, green, blue (R, G, B) three looks, chromatic filter layer is positioned at the touch-control sensing district 100A of contact panel 100.
According to one embodiment of the invention, in the touching signals transmission region 100B of first substrate 102, form thrust 114, it comprises photosensitive type sept (photo spacer) 115, and cover the first transparency conducting layer 120 on the photosensitive type sept 115, it for example is indium tin oxide (ITO) layer, wherein photosensitive type sept 115 utilizes the photoresist coating directly to be formed on the second conductive layer 108 with photoetching process, the first transparency conducting layer 120 then covers photosensitive type sept 115 and extends on the second conductive layer 108, so the capacitance touching control induction electrode structure S on thrust 114 and the first substrate 102 produces electric connection.
Then, second substrate 130 and first substrate 102 subtend settings are provided, second substrate 130 for example is thin-film transistor array base-plate (thin-film transistor (TFT) array substrate), and it is formed thereon to have a plurality of thin film transistor (TFT) (not shown).Form conductive layer 132 at second substrate 130, its material is such as being the metal materials such as gold, silver, copper, aluminium, titanium, molybdenum or aluminium neodymium alloy (AlNd), and thrust 114 contacts with conductive layer 132 on the second substrate 130, so that the touching signals that the capacitance touching control induction electrode structure S on the first substrate 102 produces can be passed to second substrate 130 sides via thrust 114.
As shown in Figure 2, conductive layer 132 on the second substrate 130 is electrically connected with flexible PCB (FPC) 136, so the touching signals that capacitance touching control induction electrode structure S produces can be sent to flexible PCB 136 via thrust 114 and conductive layer 132, integrated circuit (IC) (not shown) that is sent in the display device via flexible PCB 136 again carries out the processing of touching signals, and the thin film transistor (TFT) and the conductive layer 132 that are arranged on the second substrate 130 are electrically connected the touching signals that is produced to read capacitance touching control induction electrode structure S.
Then, form the second transparency conducting layer 122 at chromatic filter layer CF, it for example is indium tin oxide (ITO) layer, the second transparency conducting layer 122 can form on first substrate 102 by comprehensive depositing operation simultaneously with the first transparency conducting layer 120 that covers photosensitive type sept 115 surfaces, and via Patternized technique with the first transparency conducting layer 120 and the second transparency conducting layer 122 is spaced-apart is electrically insulated each other, wherein the first transparency conducting layer 120 is used for transmitting the touching signals of capacitance type touch control sensing electrode structure S, and the second transparency conducting layer 122 is then as the common electrode (common electrode) of display device.
According to one embodiment of the invention, but sandwiched liquid crystal layer 128 is as display element between first substrate 102 and second substrate 130, arrange in order to make the liquid crystal molecule generation rule in the liquid crystal layer 128, on first substrate 102 and second substrate 130, need form respectively the first both alignment layers 124 and the second both alignment layers 126 sandwiched liquid crystal layers, 128, the first both alignment layers 124 and the second both alignment layers 126 usually by polyimide (polyimide; PI) make.Generally speaking, the thickness of the first both alignment layers 124 and the second both alignment layers 126 can increase the contact impedance of the conductive layer 132 on protrusion 114 and the second substrate 130, causes the transmission usefulness of touching signals to reduce.Therefore, in an embodiment of the present invention, the position of the first both alignment layers 124 and the second both alignment layers 126 is avoided in the setting of the touching signals transmission region 100B of contact panel 100.
According to one embodiment of the invention, photosensitive type sept 115 in the thrust 114 is to form via photoresist coating and photoetching process, therefore, thrust 114 can be fixed via the photoetching process of photosensitive type sept 115 with the contact area of conductive layer 132, can so that each signal line of capacitive induction electrode is fixed via thrust 114 and the resistance that conductive layer 132 produces electrical contact, promote the sensing precision of contact panel whereby.
According to another embodiment of the present invention, thrust 114 can directly be made by conductive material, for example can be via depositing metal layers, and utilize photoetching and etch process to form.In this embodiment, thrust 114 also can be fixed via photoetching process with the contact area of conductive layer 132.
In other embodiments, thrust 114 can be made by the organic or inorganic material with electric conductivity, for example is the organic or inorganic material of conductive doped particle, and conducting particles for example is gold, silver or carbon black particle.
In an embodiment of the present invention, when thrust 114 itself has electric conductivity, can not need the first transparency conducting layer 120 on thrust 114 surfaces.
According to another embodiment of the present invention, thrust 114 can form at the conductive layer 132 of second substrate 130, and is electrically connected with the second conductive layer 108 of first substrate 102.
Because the thrust 114 in the embodiment of the invention can be sent to the electrical signals of first substrate 102 sides second substrate 130 sides, therefore, according to one embodiment of the invention, thrust (not shown) and the common electrode on the first substrate 102 122 that can additionally form other produce electric connection, voltage (Vcom) signal of common electrode 122 is sent to second substrate 130 sides, whereby can be so that do not need conductive doped particle in the frame glue material 134, and then reduce the cost of manufacture of panel, wherein thrust 114 with in order to the thrust that transmits common electrode 122 required voltages each other without electrical contact.
In addition, according to one embodiment of the invention, the production method of thrust 114 is for making first photosensitive type sept 115, form again the first transparency conducting layer 120, therefore, the technique of one embodiment of the invention can be combined with the technique of existing display panels, during sept (not shown) in forming liquid crystal layer 128, form simultaneously the photosensitive type sept 115 of thrust 114, and when forming the common electrode 122 of display panels, form simultaneously the first transparency conducting layer 120 of thrust 114, and in this embodiment, the process sequence of thrust is identical with the process sequence of the press sense geodesic structure of embedded resistance-type induction contact panel, therefore, in one embodiment of this invention, condenser type can be combined with the technique of electric resistance touch-control panel, form the contact panel of electric capacity and resistance mixed type.
In sum, the embedded touch control panel of the embodiment of the invention is arranged on capacitance touching control induction electrode and chromatic filter layer the same side of colored filter substrate, compared to external hanging touch panel, embodiments of the invention can reduce the integral thickness of touch control display apparatus.In addition, embodiments of the invention can also avoid present contact panel to carry out the scratch problem that double-side technology causes at colored filter substrate, improve whereby the fine ratio of product of contact panel.
Simultaneously, the embedded touch control panel of the embodiment of the invention utilizes capacitance touching control induction electrode and the conductive layer on the second substrate on thrust and the first substrate to produce electric connection, and then the touching signals of first substrate side is passed to the second substrate side, can avoid whereby tradition to utilize the conducting particles in the frame glue to carry out the inequality signal problem that the signal transmission causes.
In addition, according to one embodiment of the invention, originally the area of the delivery areas of voltage (Vcom) signal of the common electrode of display device can not be subject to the impact of touching signals delivery areas, so the touch-control display panel of the embodiment of the invention can improve the Vcom inequality signal of traditional touch-control display panel and the problem of the display frame bad of deriving.
Although the present invention discloses preferred embodiment as above; so it is not to limit the present invention, any those of ordinary skills, without departing from the spirit and scope of the present invention; when can doing a little change and retouching, so protection scope of the present invention defines and is as the criterion when looking the claim of enclosing.
Claims (13)
1. an embedded touch control panel has a touch-control sensing district and a touching signals transmission region, comprising:
One first substrate;
One capacitance type touch control sensing electrode is arranged in this touch-control sensing district of this first substrate;
One second substrate arranges with this first substrate subtend;
One conductive layer is arranged on this touching signals transmission region of this second substrate; And
One thrust is arranged between this first substrate and this second substrate, and is positioned on this touching signals transmission region,
Wherein this thrust and this capacitance type touch control sensing electrode are electrically connected, and contact with this conductive layer on this second substrate, so that a touching signals of this capacitance type touch control sensing electrode is passed to this second substrate via this thrust.
2. embedded touch control panel as claimed in claim 1 comprises that also a chromatic filter layer is arranged on this capacitance type touch control sensing electrode, in the face of this second substrate.
3. embedded touch control panel as claimed in claim 2, wherein this thrust comprises a photosensitive type sept, and one first transparency conducting layer be covered on this photosensitive type sept, and wherein this conductive layer on this first transparency conducting layer and this capacitance type touch control sensing electrode and this second substrate is electrically connected.
4. embedded touch control panel as claimed in claim 3 comprises that also one second transparency conducting layer is covered on this chromatic filter layer, and wherein this second transparency conducting layer and this first transparency conducting layer are isolated mutually via a Patternized technique.
5. embedded touch control panel as claimed in claim 4, wherein this first transparency conducting layer transmits this touching signals of this capacitance type touch control sensing electrode, and this second transparency conducting layer is a common electrode.
6. embedded touch control panel as claimed in claim 5 comprises that also another thrust is arranged between this first substrate and this second substrate, and in order to this second transparency conducting layer one common voltage to be provided, and this thrust and this another thrust are each other without being electrically connected.
7. embedded touch control panel as claimed in claim 1, wherein this thrust comprises an electric conductivity thrust.
8. embedded touch control panel as claimed in claim 7, wherein the material of this conductive prominence thing comprises the inorganic material of organic material or the conductive doped particle of metal, conductive doped particle.
9. embedded touch control panel as claimed in claim 1 also comprises a frame glue, is arranged between this first substrate and this second substrate, and wherein mixes without conducting particles in this frame glue.
10. embedded touch control panel as claimed in claim 1 also comprises:
One first both alignment layers is arranged on this first substrate;
One second both alignment layers is arranged on this second substrate, in the face of this first both alignment layers; And
One liquid crystal layer is located between this first both alignment layers and this second both alignment layers,
Wherein the position of this first both alignment layers and this second both alignment layers and this touching signals transmission region separate.
11. embedded touch control panel as claimed in claim 10 wherein comprises a plurality of septs in this liquid crystal layer, and this thrust comprises a photosensitive type sept, this photosensitive type sept of wherein said a plurality of septs and this thrust forms simultaneously.
12. embedded touch control panel as claimed in claim 1, wherein this thrust is formed on this first substrate or this second substrate.
13. embedded touch control panel as claimed in claim 1, wherein this capacitance type touch control sensing electrode has many signal line, and each signal line is identical via the contact area of this conductive layer on this thrust and this second substrate.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW100134934A TWI451315B (en) | 2011-09-28 | 2011-09-28 | In-cell touch panel |
| TW100134934 | 2011-09-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103034377A true CN103034377A (en) | 2013-04-10 |
| CN103034377B CN103034377B (en) | 2016-02-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110333386.4A Active CN103034377B (en) | 2011-09-28 | 2011-10-26 | Embedded touch panel |
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| Country | Link |
|---|---|
| CN (1) | CN103034377B (en) |
| TW (1) | TWI451315B (en) |
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| CN103336635A (en) * | 2013-05-13 | 2013-10-02 | 京东方科技集团股份有限公司 | Capacitive in-cell touch panel and display device |
| CN103336629A (en) * | 2013-07-05 | 2013-10-02 | 南昌欧菲光显示技术有限公司 | Optical filter component and touch display screen |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN103034377B (en) | 2016-02-10 |
| TWI451315B (en) | 2014-09-01 |
| TW201314535A (en) | 2013-04-01 |
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