CN103631458B - Touch panel, its electronic device and its manufacturing method - Google Patents
Touch panel, its electronic device and its manufacturing method Download PDFInfo
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- CN103631458B CN103631458B CN201210309164.3A CN201210309164A CN103631458B CN 103631458 B CN103631458 B CN 103631458B CN 201210309164 A CN201210309164 A CN 201210309164A CN 103631458 B CN103631458 B CN 103631458B
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Abstract
The present invention relates to technical field of touch control, provide a kind of touch panel comprising insulating substrate, pixel control layer, perimeter circuit, protective layer and ground metal layer.Insulating substrate has Touch Zone and the peripheral region around Touch Zone.Pixel control layer is located in the Touch Zone and part peripheral region of insulating substrate.Perimeter circuit is located within the peripheral region of insulating substrate, and is electrically connected at pixel control layer.Protective layer is at least covered in perimeter circuit.Ground metal layer is located on protective layer, and the range of ground metal layer covers the range of perimeter circuit.The touch panel has ground metal layer, and this ground metal layer can export the electrostatic of internal component or the human body generation from touch panel, have good electro-static discharge protective ability.
Description
Technical field
The present invention especially has touch panel, its electronic device of ground metal layer about a kind of touch panel
And its manufacturing method.
Background technique
Touch panel is a kind of input equipment, so that operator directly operates.The type of touch panel has: condenser type, electricity
The touch panels such as resistive, electromagnetic type, optical profile type, wherein capacitance type touch-control panel using relatively broad.Capacitance type touch-control panel
It is mainly binded by protection glass with being laid with the touch base plate of inductive layer, is applied in the sensed layer of capacitance type touch-control panel
When driving signal, if touch panel has touched, the corresponding inductive layer position generation telecommunications of touch position on touch panel
Number variation.
Since operator often penetrates finger manipulation touch panel, and touch panel has the sense for generating change in electric
Layer is answered, therefore, partial electrostatic can be transferred on touch panel by human body, and the touch panel is made to be easy to receive the electrostatic of human body.In addition,
Due to that can generate electrostatic in atmospheric environment, the electrostatic generated in air is also easy accumulation in touch panel.Accumulate on touch surface
Electrostatic in plate be easy to cause touch panel induction failure or erroneous judgement during discharge.
At the same time, since in recent years, touch panel develops toward light, thin direction, capacitance type touch-control panel manufacturer omits one
The touch base plate of inductive layer is carried, and inductive layer is directly produced on to the condenser type for forming integrated touch-control structure on protection glass
Touch panel.The capacitance type touch-control panel of the integration touch-control structure is bonded with display equipment, due to not having touch base plate, periphery
Route (it is metal material) is easy exposed, by human body or external environment bring electrostatic breakdown, and touch panel is caused to fail.
Although touch panel has the protective layer of insulation function, protective layer is still unable to reach good electrostatic protection effect.
Summary of the invention
In view of this, the present invention provides a kind of touch panel with good static discahrge protection effect, to export accumulation
Electrostatic in touch panel.
The embodiment of the present invention provides a kind of touch panel, and the touch panel includes insulating substrate, pixel control layer, periphery
Route, protective layer and ground metal layer.Insulating substrate has Touch Zone and the peripheral region around Touch Zone.Pixel control layer position
In in the Touch Zone and part peripheral region of insulating substrate.Perimeter circuit is located within the peripheral region of insulating substrate, and is electrically connected
In pixel control layer.Protective layer at least covers perimeter circuit.Ground metal layer is located on protective layer, the range of ground metal layer
Cover the range of perimeter circuit.
Further, the pixel control layer and the perimeter circuit one flood of protection series of strata wherein are covered；Alternatively, the guarantor
Sheath system is ring-type, at least to cover perimeter circuit.
Further, wherein the touch panel further includes the first light shield layer, which is located at the insulating substrate
Within the peripheral region, and the perimeter circuit is located on first light shield layer.
Further, wherein the ground metal layer is reticular structure.
Further, wherein the touch panel further includes the second light shield layer, which is folded in the grounded metal
Between layer and the insulating layer, and range covers the range of the peripheral region.
Further, wherein the touch panel further includes a flexible printer circuit, which has at least one
First grounding leg position, and the first grounding leg position is electrically connected the ground metal layer.Wherein the first grounding leg position also electrically connects
Connect an at least earth lead for the perimeter circuit.
Further, wherein the flexible printer circuit also has at least one second grounding leg position, and the second grounding leg position
It is electrically connected an at least earth lead for the perimeter circuit.
Further, which is printing silver paste.
Further, which further includes a flatness layer, and the flatness layer is to make pixel control layer be formed in this absolutely
Within the Touch Zone of edge substrate.
The embodiment of the present invention provides a kind of electronic device, the electronic device include touch panel, LCD MODULE with
Circuit board, wherein LCD MODULE pastes touch panel through optical cement.The touch panel includes insulating substrate, touch-control sense
Survey layer, perimeter circuit, protective layer, ground metal layer and the first flexible printer circuit (flexible printed circuit,
FPC).Insulating substrate has Touch Zone and the peripheral region around Touch Zone.Pixel control layer is located at the Touch Zone of insulating substrate
In the peripheral region of part.Perimeter circuit is located on the peripheral region of insulating substrate, and is electrically connected at pixel control layer.Protective layer is extremely
Perimeter circuit is covered less.Ground metal layer is located on insulating layer, and the range of ground metal layer covers the range of perimeter circuit.Liquid
Brilliant display module has the second flexible printer circuit.First flexible printer circuit is electrically connected perimeter circuit, and has first to connect
Lower margin position is electrically connected ground metal layer.Circuit board includes being electrically connected touch surface through first and second flexible printer circuit
An at least chip for plate and LCD MODULE.
Further, the pixel control layer and the perimeter circuit one flood of protection series of strata wherein are covered；Alternatively, the guarantor
Sheath system is ring-type, at least to cover perimeter circuit.
Further, wherein the electronic device further includes the first light shield layer, which is located at the insulating substrate
Within the peripheral region, and the perimeter circuit is located on first light shield layer.
Further, wherein the ground metal layer is reticular structure.
Further, wherein the electronic device further includes the second light shield layer, which is folded in the grounded metal
Between layer and the insulating layer, and range covers the range of the peripheral region.
Further, wherein the electronic device further includes a flexible printer circuit, which has at least one
First grounding leg position, and the first grounding leg position is electrically connected the ground metal layer.Wherein the first grounding leg position also electrically connects
Connect an at least earth lead for the perimeter circuit.
Further, wherein the flexible printer circuit also has at least one second grounding leg position, and the second grounding leg position
It is electrically connected an at least earth lead for the perimeter circuit.
Further, which is printing silver paste.
Further, which further includes a flatness layer, and the flatness layer is to make pixel control layer be formed in this absolutely
Within the Touch Zone of edge substrate.
The step of embodiment of the present invention provides a kind of manufacturing method of touch panel, the manufacturing method is described as follows.It mentions
For insulating substrate, and in division Touch Zone on insulating substrate and around the peripheral region of Touch Zone.Pixel control layer is formed in exhausted
In the Touch Zone and part peripheral region of edge substrate.The perimeter circuit in pixel control layer is electrically connected in the week of insulating substrate
Border area.The protective layer at least covering perimeter circuit is formed, the range of ground metal layer covers the ground connection in the range of perimeter circuit
The range of metal layer.
Further, the pixel control layer and the perimeter circuit one flood of protection series of strata wherein are covered；Alternatively, the guarantor
Sheath system is ring-type, at least to cover perimeter circuit.
Further, the manufacturing method of the touch panel further include to be formed one first light shield layer be located at the insulating substrate should
Within peripheral region, and the perimeter circuit is located on first light shield layer.
Further, which is reticular structure.
Further, the manufacturing method of the touch panel further include to be formed be folded in the ground metal layer and the protective layer it
Between one second light shield layer, wherein the range of second light shield layer covers the range of the non-display area.
Further, the manufacturing method of the touch panel, which further includes, provides a flexible printer circuit, so that the soft printing
At least one first grounding leg position of circuit is electrically connected the ground metal layer.Further, the manufacturing method of the touch panel is more
Including forming a flatness layer on the viewing area, wherein the flatness layer is to make the pixel control layer be formed in the insulating substrate
Within the Touch Zone.
In conclusion the touch panel has ground metal layer, and this ground metal layer can be exported from touch-control
The electrostatic that the internal component or human body of panel generate.In addition, ground plane can be with shielded capacitor touch panel in use
The external electromagnetic wave interference being subject to, therefore that both there is electro-static discharge protective ability can also shield electromagnetic wave was dry for the touch panel
It disturbs.
Detailed description of the invention
Fig. 1 is the plane perspective view of the touch panel of the embodiment of the present invention.
Fig. 2A is the sectional view along the hatching AA of Fig. 1.
Fig. 2 B is the sectional view of the touch panel of another embodiment of the present invention.
Fig. 2 C is the sectional view of the touch panel of yet another embodiment of the invention.
Fig. 3 A to Fig. 3 E is the touch panel structure provided formation flow diagram in Fig. 2 B.
Fig. 4 is the schematic diagram for the electronic device that the present invention is implemented.
Specific embodiment
For the enabled feature and technology contents for being further understood that the present invention, please refer to below in connection with it is of the invention specifically
Bright and attached drawing, but these explanations are intended merely to illustrate the present invention with institute's accompanying drawings, rather than interest field of the invention is appointed
What limitation.
Fig. 1 and Fig. 2A are please referred to, Fig. 1 is the plane perspective view of the touch panel of the embodiment of the present invention, and Fig. 2A is along Fig. 1
Hatching AA sectional view.Touch panel 100 includes insulating substrate 110, the first light shield layer 120, perimeter circuit 140, touch-control
Sensed layer 150, protective layer 160, ground metal layer 170 and flexible printer circuit 190.
Insulating substrate 110 has Touch Zone M1 and peripheral region M2, and wherein peripheral region M2 is around around the M1 of Touch Zone.Absolutely
The material of edge substrate 110 can be glass, plastics or quartz, however, the present invention is not limited thereto.In the embodiment of the present invention
In, 100 system of touch panel uses the capacitance type touch-control panel of integrated touch-control structure, therefore 110 system of the insulating substrate is simultaneously
As touching operating surface.
First light shield layer 120 is located within the M2 of peripheral region, and main application is shading and decoration, therefore can be used to prevent because entering
It penetrates the leakage of light and influences the performance of image.In addition, the color contrast of image can also be increased using the first light shield layer 120
Property.Material used in first light shield layer 120 can be black resin, black photoresist, be also possible to have low dielectric normal
Several high dielectric inks, the present invention is not limited thereto.
Pixel control layer 150 is located in Touch Zone M1 and part peripheral region M2, to sense the multiple telecommunications generated thereon
Number variation, to obtain change in electric as sensing signal.Pixel control layer 150 includes first be all located in the M1 of Touch Zone
Pattern layer 151, insulating layer 152 and the second pattern layer 153, and the first pattern layer 151 and the second pattern layer 153 are all conduction material
Material.The material of first pattern layer 151 and the second pattern layer 153 be, for example, indium tin oxide (Indium Tin Oxides, ITO),
Indium-zinc oxide (Indium Zinc Oxide, IZO), aluminium zinc oxide (Zinc oxide doping 3oxidation
2aluminium, AZO) or metal.Above-mentioned metal is, for example, gold, silver or copper.In addition, the material of insulating layer 152 is, for example, resin
Or polyimide.To sum up, the first pattern layer 151, insulating layer 152 and the material of the second pattern layer 153 are not to limit
The present invention.
First pattern layer 151 has parallel multiple first axis induced electricity polar axis (for example, X-axis induced electricity polar axis), the
Two pattern layers 153 have parallel multiple second axial induction electrode axis (for example, Y-axis induced electricity polar axis), insulating layer 152 to
Be electrically insulated first and second axial induction electrode axis.The infall of first axis electrode axis and the second axial electrode axis can be with shape
At mutual capacitance, the mutual capacitance signal intensity that controller (not shown) can pass through reception pixel control layer 150 further calculates touching
Point position.It should also be noted that above embodiment is not intended to limit the invention.In a kind of wherein embodiment, the first pattern
Layer 151 have parallel multiple first axis induced electricity polar axis (for example, X-axis induced electricity polar axis) with matrix arrangement but mutually every
Multiple second axial electrodes (for example, Y-axis induction electrode) opened, the second pattern layer 153, will be along the second axis as bridging layer
To multiple second axial electrodes be electrically connected each other, to form parallel multiple second axial electrode axis.In addition, in other realities
It applies in example, pixel control layer 150 can also only have a layer pattern layer.
Perimeter circuit 140 is electrically connected at pixel control layer 150, is formed on the first light shield layer 120, and is located at week
In the M2 of border area.Perimeter circuit 140 is to by sensing signal caused by pixel control layer 150, if mutual capacitance signal is through soft
Printed circuit 190 is sent to controller (not shown).Perimeter circuit 140 be as made by conductive material, such as indium tin oxide,
Indium-zinc oxide, aluminium zinc oxide or metal.Perimeter circuit 140 can be formed through the methods of etching or printing, but the present invention
And not only as limit.It is worth noting that perimeter circuit 140, in other embodiments, touch-control sensing layer 150 extends to periphery
Area M2, and be electrically connected with each other on the first shielding layer 120 with perimeter circuit 140.
Protective layer 160 can be covered on pixel control layer 150 and perimeter circuit 140 with a flood, to protect
Pixel control layer 150 and perimeter circuit 140 prevent it from aoxidizing or scratching, therefore protective layer 160 can be and for example, be passivated
Object.Protective layer 160 can also be ring-type, at least covering perimeter circuit 140.Protective layer 160 can be insulating layer, to electricity
Sexual isolation perimeter circuit 140 and ground metal layer 170.Protective layer 160 can be by silicon nitride (S3N4) or silica
(SiO2), by made by vapour deposition process, but the present invention and not only as limit.
Ground metal layer 170 is located on protective layer 160, and the formation range of ground metal layer 170 covers perimeter circuit 140
Range, even, the formation range of ground metal layer 170 covers the range of peripheral region M2.Ground metal layer 170 and soft printing
First grounding leg position of circuit 190 is electrically connected, therefore ground metal layer 170 can penetrate flexible printer circuit 190 for accumulation
Electrostatic is sent to ground terminal.Therefore, the design of the ground metal layer 170 can make touch panel 100 have static discharge
Protective capacities, the problem of preventing touch panel or other assemblies from being wounded by static discharge.In addition, touch panel 100 is in use process
In be subject to extraneous Electromagnetic Interference (EMI), generate accidentally signal or even serious interference will lead to entire touch panel
100 are not all available, and ground metal layer 170 can also play the role of shielding herein the interference of electromagnetic wave, make touch panel
100 being capable of normal use.
In this embodiment, the material of ground metal layer 170 is metal.In a metal, due to printing silver paste good conductivity,
The good advantage of resistance, preferably, ground metal layer 170 can be made of printing silver paste.In this embodiment, ground metal layer
170 shape can be reticular structure.Other than it can save material to reduce manufacturing cost, the ground metal layer of reticular structure
170 can more allow product manufacturing person or maintenance person facilitate through electron microscopy perimeter circuit 140 whether have open circuit with it is short
The problem of road, exists, and in the embodiment of the present invention, the sizing grid of the reticular structure for example can be 0.5 centimetre of side length of side
Lattice.
Flexible printer circuit 190 has the first grounding leg position and the second grounding leg position, and the first grounding leg position can electrically connect
Ground metal layer 170 is connect, the second grounding leg position is electrically connected a multiple or earth lead for perimeter circuit 140.Except this it
Outside, flexible printer circuit 190 also has sensing signal foot position and driving signal foot position, and sensing signal foot position is to receive touch-control sense
The sensing signal of layer 150 is surveyed, and driving signal foot position is to forward drive signals to pixel control layer 150.
In addition, in other embodiments, flexible printer circuit 190 only has the first grounding leg position, and the first grounding leg position
It is electrically connected a multiple or earth lead for ground metal layer 170 Yu perimeter circuit 140 simultaneously.It is worth noting that if examining
The electro-static discharge protective ability for considering the touch panel 100 then in above-described embodiment, uses first in flexible printer circuit 190
It in the case where the second grounding leg position, can come good using only the effect of the first grounding leg position than flexible printer circuit 190.
In addition, flexible printer circuit 190 can be through a unilateral connection ground metal layer 170 in the first grounding leg position,
Alternatively, can also penetrate two bilateral connection ground metal layers 170 in the first grounding leg position.To sum up, flexible printer circuit
190 are not intended to limit the invention with the connection type of ground metal layer 170.
It should also be noted that if above-mentioned touch panel 100 is set on display panel, for carrying out touch-control behaviour to display panel
When making, insulating substrate 110 can be transparent insulation substrate, and Touch Zone M1 and peripheral region M2 can be used to define viewing area again
With non-display area.In addition, if insulating substrate 110 can be nontransparent when above-mentioned touch panel 100 is not in conjunction with display panel
Insulating substrate, and the first light shield layer 120 can be removed from touch panel 100, at this point, perimeter circuit 140 is located immediately at insulation
On the peripheral region M2 of substrate 110.
B referring to figure 2., Fig. 2 B are the sectional views of the touch panel of another embodiment of the present invention.In this embodiment, touch-control
Panel 100 ' is roughly the same with the touch panel 100 of previous embodiment, the difference is that touch panel 100 ' is with more flat
Layer 130.Flatness layer 130 is located in the M1 of Touch Zone, and is set between touch-control sensing layer 150 and insulating substrate 110.Flatness layer 130
It can be with so that pixel control layer 150 be formed on the Touch Zone M1 of insulating substrate 110.In addition, flatness layer 130 also can be used to prevent
Light scattering from LCD MODULE, and then improve the performance of image.Flatness layer 130 can be is put down with what polymer was formed
Slip layer, such as polyimide (polyimide, PI), the present invention do not limit the material of flatness layer 130.
It is please the sectional view of the touch panel of yet another embodiment of the invention referring next to Fig. 2 C, Fig. 2 C.Compared to Fig. 2 B's
100 " the structure of touch panel of touch panel 100 ', Fig. 2 C further includes the second light shield layer 180.Second light shield layer 180 is located at ground connection
Between metal layer 170 and protective layer 160, wherein the range of the second light shield layer 180 covers the range of peripheral region M2.Second light shield layer
180 main application is shading and decoration, can be used to reinforce the leakage for preventing incident light and then the performance for influencing image, because
Material used in this second light shield layer 180 can be black resin, black photoresist or high absolutely with low-k
Edge ink, made by the processing procedures such as coating or sputter.
It is worth noting that, if material used in the second light shield layer 180 of touch panel 100 " is that have low dielectric normal
Several high dielectric inks, then can more electrically isolate ground metal layer 170 and perimeter circuit 140.Accordingly, it can more reduce
Electrical interference between perimeter circuit 140 and ground metal layer 170, so as to be improved touch panel structure provided 100 " electrostatic
Electric discharge protective capacities.In addition to this, as previously described, the flatness layer 130 of Fig. 2 C can also be removed, also that is, flatness layer 130
Whether there is or not to limit the second light shield layer 180.
In addition, as shown in Figure 2 C, the second light shield layer 180 can extend toward perimeter circuit 140, and surround perimeter circuit
140 four side of outside.Accordingly, the second light shield layer 180 can also protect 140 script of perimeter circuit to be exposed to outer exterior portion,
It avoids perimeter circuit 140 impaired or scratches.
Then, please sequentially referring to Fig. 3 A~Fig. 3 E and Fig. 2A, Fig. 3 A~Fig. 3 E is the touch panel 100 of Fig. 2A respectively in each
Step is formed by the sectional view of semi-finished product.Fig. 3 A is please referred to, first offer insulating substrate 110, and on insulating substrate 110 strokes
Divide the Touch Zone M1 and peripheral region M2 around Touch Zone M1.Then, the first light shield layer 120 is formed in transparent insulation substrate 110
Peripheral region M2 in.First light shield layer 120 is black photoresist, is coated on the M2 of peripheral region via lithographic process.Then, black
Color photoresist can form dark border, therefore the first light shield layer 120 has shading after carrying out pre-baked and step of exposure in turn
Effect.In addition, the first light shield layer 120 can be the high dielectric ink with low-k, made in a manner of screen painting
In in the M2 of peripheral region, or, the first light shield layer 120 is also possible to chromium, is formed on the M2 of peripheral region with sputter process.For total
It, the present invention does not limit the generation type of the first light shield layer 120.
Fig. 3 B is please referred to, forms pixel control layer 150 on insulating substrate 110, and be located at Touch Zone M1 and part periphery
In area M2, wherein pixel control layer 150 includes the first pattern layer 151, insulating layer 152 and the second pattern layer 153.In more detail
It says, is initially formed the first pattern layer 151, then form insulating layer 152 on the first pattern layer 151, forming the second figure later
Pattern layer 153 is on insulating layer 152.
Fig. 3 C is please referred to, perimeter circuit 140 is formed on the first light shield layer 120, and around pixel control layer 150
Surrounding.Perimeter circuit 140 has an at least earth lead.The generation type of perimeter circuit 140 can be etching, printing or beat
The methods of line, but the present invention and not only as limit.
Fig. 3 D is please referred to, then, forms protective layer 160 on pixel control layer 150 and perimeter circuit 140.In addition, protecting
Sheath 160 can be formed by vapour deposition process, but the present invention and not only as limit.Protective layer 160 can with a flood
It is covered on pixel control layer 150 and perimeter circuit 140, to protect pixel control layer 150 and perimeter circuit 140,
Prevent it from aoxidizing or scratching, therefore protective layer 160 can be for example, passivation.Protective layer 160 can also be ring-type, at least
Cover perimeter circuit 140.Protective layer 160 can be insulating layer, to electrically isolation perimeter circuit 140 and ground metal layer
170。
Fig. 3 E is please referred to, ground metal layer 170 is formed on protective layer 160, and the range of ground metal layer 170 covers
The range of perimeter circuit 140, it might even be possible to cover the range of peripheral region M2.In addition, in embodiments of the present invention, ground metal layer
170 be silver paste, and is made on protective layer 160 with mode of printing.But, the material of ground metal layer 170 and production
Mode only illustrates, and the non-limiting present invention.
It is worth noting that, in other embodiments of the invention, ground metal layer 170 is reticular structure, reticular structure
The person easy to repair of ground metal layer 170 or producer check perimeter circuit 140 between whether have open circuit and short circuit problem.This
Outside, ground metal layer 170 is also possible to membrane structure, in short, the present invention does not limit the structure of ground metal layer 170
It is fixed.
Please continue to refer to Fig. 2A, the flexible printer circuit 190 of bilateral or unilateral connection ground metal layer 170 is eventually formed.
It is worth noting that, flexible printer circuit 190 has the first grounding leg position and the second grounding leg position, the first grounding leg position can electricity
Property connection ground metal layer 170, the second grounding leg position be electrically connected perimeter circuit 140 a multiple or earth lead.It removes
Except this, flexible printer circuit 190 also has sensing signal foot position and driving signal foot position, and sensing signal foot position is to receive touching
The sensing signal of sensed layer 150 is controlled, and driving signal foot position is to forward drive signals to pixel control layer 150.In addition, at it
In his embodiment, flexible printer circuit 190 only has the first grounding leg position, and the first grounding leg position is electrically connected ground connection gold simultaneously
Belong to a multiple or earth lead for layer 170 and perimeter circuit 140.To sum up, the present invention is limited not to this.
In addition to this, a flatness layer is had more between insulating substrate 110 and pixel control layer 150 when touch panel 100,
Flatness layer 130 can be formed between Fig. 3 A and Fig. 3 B on the viewing area M1 of transparent insulation substrate 110, wherein flatness layer is to make
Pixel control layer 150 is formed on the Touch Zone M1 of insulating substrate 110.It is worth noting that, the thickness of flatness layer and first
The thickness of light shield layer 120 is substantially the same, so as to go on smoothly follow-up process.In addition, flatness layer is formed with polymer.
Accordingly, flatness layer can be formed in transparent insulation substrate 110 by vapor deposition, and be located in the M1 of Touch Zone, but the present invention is simultaneously
The unlimited generation type for determining flatness layer.Simultaneously, 150 system of pixel control layer through flatness layer and be formed in Touch Zone M1 it
On.
In addition, when touch panel 100 has more one second light shield layer, Yu Tu between ground metal layer 170 and protective layer 160
It is formed between 3D and Fig. 3 E on protective layer 160, and the formation range of the second light shield layer 180 covers the range of peripheral region M2.
Second light shield layer 180 can be black photoresist, be coated on the M2 of peripheral region via lithographic process, then, then carry out pre-baked
And step of exposure, and then dark border is formed, so that the second light shield layer 180 can be to shading.In addition, the second light shield layer 180
It can also be the high dielectric ink with low-k, be made in a manner of wire mark on the M2 of peripheral region.Either second hides
Photosphere 180 is also possible to chromium, is formed on the M2 of peripheral region with sputter process.In short, the present invention does not limit the second light shield layer 180
Generation type.
It is please the schematic diagram for the electronic device that the present invention is implemented referring next to Fig. 4, Fig. 4.Electronic device 400 has touch surface
Plate 410, LCD MODULE 420 and circuit board 430.The touch panel 410 has flexible printer circuit 411, touch panel
410 can be the touch panel 100 of above-described embodiment, touch panel 100 ' or touch panel 100 ".LCD MODULE 420
The touch panel 410 is sticked in through optical cement, and there is flexible printer circuit 421.Circuit board 430 includes respectively through soft
Printed circuit 411 and flexible printer circuit 421 and be electrically connected the chip 431 of touch panel 410 and LCD MODULE 420 with
Chip 432.The number of chips of circuit board 430 is not intended to limit the invention, and chip 432 or chip 431 can simultaneously electrically
Connect touch panel 410 and LCD MODULE 420.
In conclusion the touch panel provided by the embodiment of the present invention has ground metal layer, and this grounded metal
Layer can export the electrostatic of the internal component accumulation from touch panel.In addition, ground plane can also be with shielded capacitor touch surface
Plate in use by extraneous Electromagnetic Interference, therefore the touch panel can have electro-static discharge protective ability and
It can be with shielding electromagnetic interference.
In addition to this, the present invention in one embodiment, the ground metal layer can be the printing of reticular structure
Silver paste to reduce the cost of touch panel, and provides maintenance person or producer convenient for checking whether perimeter circuit has open circuit or short
The problem of road.In addition, in another embodiment, the touch panel has more the second light shield layer, and the second shading
Layer can be the high dielectric ink with low-k, to increase the antistatic capacity of touch panel.
The above description is only an embodiment of the present invention, the scope of patent protection being not intended to limit the invention.It is any ripe
Alike those skilled in the art is practised, without departing from the spirit and scope of the invention, the equivalence replacement of made change and retouching, is still this hair
In bright scope of patent protection.
Claims (20)
1. a kind of touch panel, comprising:
One insulating substrate has a Touch Zone and the peripheral region around the Touch Zone；
One pixel control layer, in Touch Zone and part peripheral region of the insulating substrate；
One perimeter circuit within the peripheral region of the insulating substrate, and is electrically connected at the pixel control layer；
One first light shield layer, within the peripheral region of the insulating substrate, and the perimeter circuit be located at first light shield layer it
On；
One protective layer at least covers the perimeter circuit；And
One ground metal layer is located on the protective layer, and the range of the ground metal layer covers the range of the perimeter circuit；
One second light shield layer, is folded between the ground metal layer and the protective layer, and wherein the range of second light shield layer covers
The range of the peripheral region, and extend toward the perimeter circuit, to surround four side of outside of the perimeter circuit；
Wherein the protective layer is located at least between the ground metal layer and the perimeter circuit；
Wherein the protective layer is an insulating layer, and electrically completely cuts off the perimeter circuit and the grounded metal together with second light shield layer
Layer.
2. touch panel according to claim 1, which is characterized in that cover the touch-control sensing to one flood of protection series of strata
Layer and the perimeter circuit；Alternatively, wherein the protection series of strata are ring-type, at least to cover the perimeter circuit.
3. touch panel according to claim 1, which is characterized in that the ground metal layer is reticular structure.
4. touch panel according to claim 1, further includes:
One flexible printer circuit has at least one first grounding leg position, and wherein the first grounding leg position is electrically connected ground connection gold
Belong to layer.
5. touch panel according to claim 4, which is characterized in that the flexible printer circuit also has at least 1 second to connect
Lower margin position, wherein the second grounding leg position is electrically connected an at least earth lead for the perimeter circuit.
6. touch panel according to claim 4, which is characterized in that the first grounding leg position is also electrically connected the perimeter line
An at least earth lead on road.
7. touch panel according to claim 1, which is characterized in that the ground metal layer is printing silver paste.
8. touch panel according to claim 1, which is characterized in that further include:
One flatness layer, the flatness layer is be formed in the pixel control layer within the Touch Zone of the insulating substrate.
9. a kind of electronic device, comprising:
One touch panel, including
One transparent insulation substrate has a Touch Zone and the peripheral region around the Touch Zone；
One pixel control layer, in Touch Zone and part peripheral region of the insulating substrate；
One perimeter circuit within the peripheral region of the insulating substrate, and is electrically connected at the pixel control layer；
One first light shield layer, within the peripheral region of the insulating substrate, and the perimeter circuit be located at first light shield layer it
On；
One protective layer at least covers the perimeter circuit；
One ground metal layer is located on the protective layer, and the range of the ground metal layer covers the range of the perimeter circuit；
One second light shield layer, is folded between the ground metal layer and the protective layer, and wherein the range of second light shield layer covers
The range of the peripheral region, and extend toward the perimeter circuit, to surround four side of outside of the perimeter circuit；And
One first flexible printer circuit is electrically connected the perimeter circuit, and there is at least one first grounding leg position to be electrically connected should
Ground metal layer；
One LCD MODULE sticks in the touch panel through an optical cement, and has one second flexible printer circuit；
One circuit board, including the touch panel and the liquid crystal are electrically connected through first and second flexible printer circuit respectively
An at least chip for display module；
Wherein the protective layer is located at least between the ground metal layer and the perimeter circuit；
Wherein the protective layer is an insulating layer, and electrically completely cuts off the perimeter circuit and the grounded metal together with second light shield layer
Layer.
10. electronic device according to claim 9, which is characterized in that cover the touch-control sense to one flood of protection series of strata
Survey layer and the perimeter circuit；Alternatively, wherein the protection series of strata are ring-type, at least to cover the perimeter circuit.
11. electronic device according to claim 9, which is characterized in that the ground metal layer is reticular structure.
12. electronic device according to claim 9, which is characterized in that first flexible printer circuit also has at least one
Second grounding leg position, wherein the second grounding leg position is electrically connected an at least earth lead for the perimeter circuit.
13. electronic device according to claim 9, which is characterized in that the first grounding leg position is also electrically connected the periphery
An at least earth lead for route.
14. electronic device according to claim 9, which is characterized in that the ground metal layer is printing silver paste.
15. electronic device according to claim 9, which is characterized in that the touch panel further includes:
One flatness layer, the flatness layer is be formed in the pixel control layer within the Touch Zone of the insulating substrate.
16. a kind of manufacturing method of touch panel, comprising:
There is provided an insulating substrate, and in dividing a Touch Zone on the insulating substrate and around a peripheral region of the Touch Zone；
One first light shield layer is formed to be located within the peripheral region of the insulating substrate；
A pixel control layer is formed in Touch Zone and part peripheral region of the insulating substrate；
The perimeter circuit in the pixel control layer is electrically connected within the peripheral region of the insulating substrate, and being located at should
On first light shield layer；Form the protective layer at least covering the perimeter circuit；
It forms its range and covers one of range of perimeter circuit ground metal layer on the protective layer, wherein the ground metal layer
Range cover the range of the perimeter circuit, wherein the protective layer is located at least in the ground metal layer and the perimeter circuit
Between；And
One second light shield layer being folded between the ground metal layer and the protective layer is formed, wherein the range of second light shield layer
Cover the range of the peripheral region, and extend toward the perimeter circuit, to surround four side of outside of the perimeter circuit；
Wherein the protective layer is an insulating layer, and electrically completely cuts off the perimeter circuit and the grounded metal together with second light shield layer
Layer.
17. the manufacturing method of touch panel according to claim 16, which is characterized in that cover to one flood of protection series of strata
Cover the pixel control layer and the perimeter circuit；Alternatively, wherein the protection series of strata are ring-type, at least to cover the perimeter circuit.
18. the manufacturing method of touch panel according to claim 16, which is characterized in that the ground metal layer is netted knot
Structure.
19. the manufacturing method of touch panel according to claim 16, further includes:
A flexible printer circuit is provided, so that at least one first grounding leg position of the flexible printer circuit is electrically connected ground connection gold
Belong to layer.
20. the manufacturing method of touch panel according to claim 16, further includes: forming a flatness layer in the Touch Zone
On, wherein the flatness layer is be formed in the pixel control layer within the Touch Zone of the insulating substrate.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210309164.3A CN103631458B (en) | 2012-08-27 | 2012-08-27 | Touch panel, its electronic device and its manufacturing method |
| TW102100280A TWI590109B (en) | 2012-08-27 | 2013-01-04 | Touch panel, electronic device thereof, and manufacturing method thereof |
| TW102200196U TWM460336U (en) | 2012-08-27 | 2013-01-04 | Touch panel and electronic device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210309164.3A CN103631458B (en) | 2012-08-27 | 2012-08-27 | Touch panel, its electronic device and its manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103631458A CN103631458A (en) | 2014-03-12 |
| CN103631458B true CN103631458B (en) | 2018-12-25 |
Family
ID=49481864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210309164.3A Active CN103631458B (en) | 2012-08-27 | 2012-08-27 | Touch panel, its electronic device and its manufacturing method |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN103631458B (en) |
| TW (2) | TWM460336U (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103955312A (en) * | 2014-05-06 | 2014-07-30 | 山东华芯富创电子科技有限公司 | Anti-static structure and manufacturing method thereof for touch panel |
| CN105988608B (en) * | 2014-11-20 | 2019-08-13 | 宸鸿科技(厦门)有限公司 | Electrostatic protection touch panel |
| CN106445212A (en) * | 2015-08-07 | 2017-02-22 | 宸鸿光电科技股份有限公司 | Touch device and formation method thereof |
| CN106494105A (en) * | 2015-09-07 | 2017-03-15 | 东莞奔迅汽车玻璃有限公司 | A kind of printing process of safety glass silver wire and a kind of safety glass |
| CN106648188B (en) * | 2015-10-29 | 2023-10-24 | 宸鸿科技(厦门)有限公司 | Touch panel |
| CN105320355B (en) * | 2015-11-13 | 2019-02-12 | 业成光电（深圳）有限公司 | Touch control display apparatus |
| CN105848394B (en) * | 2016-05-18 | 2017-08-18 | 京东方科技集团股份有限公司 | Display device and preparation method thereof |
| KR102493527B1 (en) * | 2016-07-05 | 2023-02-01 | 삼성디스플레이 주식회사 | Rollable display device and electronic device including the same |
| TWI628491B (en) * | 2016-07-29 | 2018-07-01 | 鴻海精密工業股份有限公司 | Anti - static display device |
| CN106843583A (en) * | 2017-01-23 | 2017-06-13 | 武汉华星光电技术有限公司 | A kind of pressure sensitive panel |
| CN107017234A (en) * | 2017-03-31 | 2017-08-04 | 西安易朴通讯技术有限公司 | A kind of electronic equipment |
| CN110032286A (en) * | 2018-01-12 | 2019-07-19 | 宝宸（厦门）光学科技有限公司 | Touch control display apparatus |
| TWI684905B (en) * | 2019-03-21 | 2020-02-11 | 國立中興大學 | Soft sensing device |
| CN113760115A (en) * | 2020-06-05 | 2021-12-07 | 瀚宇彩晶股份有限公司 | Touch panel and manufacturing method thereof |
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Also Published As
| Publication number | Publication date |
|---|---|
| TW201409317A (en) | 2014-03-01 |
| TWI590109B (en) | 2017-07-01 |
| CN103631458A (en) | 2014-03-12 |
| TWM460336U (en) | 2013-08-21 |
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