CN206421121U - A kind of liquid crystal display device - Google Patents
A kind of liquid crystal display device Download PDFInfo
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- CN206421121U CN206421121U CN201720021705.0U CN201720021705U CN206421121U CN 206421121 U CN206421121 U CN 206421121U CN 201720021705 U CN201720021705 U CN 201720021705U CN 206421121 U CN206421121 U CN 206421121U
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- liquid crystal
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- piezoelectric layer
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Abstract
The utility model provides a kind of liquid crystal display device, including：First substrate and second substrate, the first substrate and the second substrate are oppositely arranged；Liquid crystal layer, between the first substrate and the second substrate；Pixel electrode and public electrode, on the second substrate, produce an electric field parallel to the liquid crystal layer to control the liquid crystal layer by the voltage being added between the pixel electrode and the public electrode；Polaroid, on the first substrate；Piezoelectric layer, between the first substrate and the polaroid, the piezoelectric layer and a switch electrical connection control whether the piezoelectric layer is grounded by the switch.The utility model realizes display and the writing function of liquid crystal display device, and does not increase power consumption.
Description
Technical field
The utility model is related to LCDs field, more particularly to a kind of liquid crystal display device.
Background technology
It is saturating that liquid crystal display is that the phenomenon changed in the presence of electric field using the orientation of liquid crystal molecule changes light source
The display device of light rate.TFT liquid crystal displays drive the liquid crystal deflection in each pixel cell by TFT (thin film transistor (TFT)), so that
Realize high speed, high brightness, high-contrast ground display screen information.Current TFT liquid crystal displays are that best color liquid crystal shows and set
It is one of standby.
TFT liquid crystal displays are also used as handwriting pad, and common technology is to coordinate touch screen technology to remember automatically using related software
Recall handwriting tracks, realize that board writes purpose.But common technology can increase the power consumption and cost of manufacture of display device.
Utility model content
In view of this, the utility model provides a kind of liquid crystal display device, and when black screen of liquid crystal screen, finger is on liquid crystal display
During slip, finger pressure makes piezoelectric type material produce electric field, makes the liquid crystal deflection in pixel cell, and light leak state is presented, so that
The track left on liquid crystal display is shown, the writing function of liquid crystal display is realized.When TFT liquid crystal bright screens, during as clipboard
Finger pressure makes piezoelectric type material and ground short circuit, and the electrostatic charge of generation is released, so that the display of TFT liquid crystal displays is just
Often.
According to one side of the present utility model there is provided a kind of liquid crystal display device, including：
First substrate and second substrate, the first substrate and the second substrate are oppositely arranged；
Liquid crystal layer, between the first substrate and the second substrate；
Pixel electrode and public electrode, on the second substrate, by being added in the pixel electrode and the public affairs
Voltage between common electrode produces an electric field parallel to the liquid crystal layer to control the liquid crystal layer；
Polaroid, on the first substrate；
Piezoelectric layer, between the first substrate and the polaroid, the piezoelectric layer and a switch electrical connection pass through
Whether the switch control piezoelectric layer is grounded.
Preferably, intersecting multiple controlling grid scan lines and multiple source data lines are additionally provided with the second substrate,
In each crossover location of the controlling grid scan line and the source data line, thin film transistor (TFT) is set.
Preferably, the switch is turned in the liquid crystal display device bright screen, in the liquid crystal display device blank screen
Disconnect.
Preferably, the switch is metal-oxide-semiconductor.
Preferably, the grid of the metal-oxide-semiconductor receives control signal, and the source electrode of the metal-oxide-semiconductor is connected to the piezoelectric layer, institute
The grid for stating metal-oxide-semiconductor is connected to the ground.
Preferably, the liquid crystal display device also includes a button, the button and switch electrical connection, and control is described
Switch bright screen or blank screen.
Preferably, the button is the power knob of the liquid crystal display device.
Preferably, the polaroid and the piezoelectric layer pass through OCA optics glue stickings, the piezoelectric layer and first base
Plate is also by OCA optics glue stickings.
Preferably, the thickness of the piezoelectric layer is 0.135-0.25um.
The utility model provides a kind of liquid crystal display device, including：First substrate and second substrate, the first substrate
It is oppositely arranged with the second substrate；Liquid crystal layer, between the first substrate and the second substrate；Pixel electrode and public affairs
Common electrode, on the second substrate, is produced by the voltage being added between the pixel electrode and the public electrode
One electric field parallel to the liquid crystal layer controls the liquid crystal layer；Polaroid, on the first substrate；Piezoelectricity
Layer, between the first substrate and the polaroid.
The liquid crystal display device is not when to electricity, and normally black mode presses screen, and its piezoelectric layer electric field passes through first substrate,
Liquid crystal layer is tilted, light leak state is presented, so as to realize writing pads function.The liquid crystal display device realizes display and writing work(
Can, and do not increase power consumption.
Brief description of the drawings
Description by referring to the following drawings to the embodiment of the present disclosure, the above-mentioned and other purpose of the embodiment of the present disclosure,
Feature and advantage will be apparent from, in the accompanying drawings：
Fig. 1 shows the equivalent circuit diagram of the liquid crystal display device according to prior art；
Fig. 2 shows the schematic diagram of the liquid crystal display device according to prior art；
Fig. 3 shows the schematic diagram of the liquid crystal display device of the utility model embodiment.
【Reference】
Second substrate 101；Grid conductor 102；Gate dielectric layer 103；Amorphous silicon layer 104；Source region 105；Source electrode
106；Drain electrode 107；Drain region 108；Interlayer insulating film 109；Public electrode 110；Pixel electrode 111；Liquid crystal layer 200；OC layers
201；First substrate 203；Polaroid 204；Piezoelectric layer 205.
Embodiment
The embodiment of the present disclosure is described below based on embodiment, but the embodiment of the present disclosure is not restricted to these
Embodiment.It is detailed to describe some specific detail sections below in the detailed description of the embodiment of the present disclosure.To this area
The description of part can also understand the embodiment of the present disclosure completely without these details for technical staff.In order to avoid obscuring this public affairs
The essence of embodiment is opened, known method, process, flow are not described in detail.What other accompanying drawing was not necessarily drawn to scale.
Fig. 1 shows the equivalent circuit diagram of the liquid crystal display device according to prior art.Pixel electrodes 111 and public
Electrode 110 can be equivalent to pixel capacitance CLC.Via controlling grid scan line gating thin film transistor (TFT) (Tin), and via source electrode number
The voltage corresponding with GTG is applied to pixel capacitance C according to lineLC, so as to change the orientation of liquid crystal molecule to realize corresponding GTG
Brightness.In order to keep voltage, pixel capacitance C between the update cycle of pixelLCCan parallel connection storage capacitance Cs to obtain more
The long retention time.Gate drivers 30 are connected to controlling grid scan line, for providing grid voltage G1 to Gm.Source electrode driver 40
Source data line is connected to, for providing gray scale voltage S1 to Sn.
Fig. 2 shows the schematic diagram of the liquid crystal display device according to prior art.Liquid crystal display device 100 includes
First substrate 203 and second substrate 101.The lower surface of first substrate 203 is relative with the upper surface of second substrate 101.Second
Substrate 101 is provided with thin film transistor (TFT) (Tin), public electrode 110 and pixel electrode 111, wherein public electrode 110 and pixel electricity
Pole 111 forms Fig. 1 pixel capacitance CLC.Thin film transistor (TFT) (Tin) includes grid conductor 102, gate dielectric layer from bottom to top
103rd, amorphous silicon layer 104, source region 105, source electrode 106, the electric level 107 of drain electrode, drain region 108, interlayer insulating film 109.
The inner surface setting of first substrate 203 has OC layers 201, chromatic filter layer 202；The outer surface of first substrate 203 is set
It is equipped with polaroid 204.Liquid crystal layer 200 is set between first substrate 203 and second substrate 101.
Based on this, the utility model provides a kind of liquid crystal display device, and its logic circuit is identical with Fig. 1, by polarisation
Increase piezoelectric layer between piece and first substrate, electrostatic is exported.
Fig. 3 shows the sectional view of the liquid crystal display device of embodiment of the present utility model.
Liquid crystal display device 300 includes first substrate 203 and second substrate 101.The lower surface of first substrate 203 and second
The upper surface of substrate 101 is relative.TFT thin film transistor (TFT)s, public electrode 110 and pixel electrode are provided with second substrate 101
111.TFT thin film transistor (TFT)s (Tin) include grid conductor 102, gate dielectric layer 103, amorphous silicon layer 104, source from bottom to top
Area 105, source electrode 106, drain electrode 107, drain region 108, interlayer insulating film 109.The inner surface setting of first substrate 203 has
OC layers 201, chromatic filter layer 202；The outer surface of first substrate 203 is provided with polaroid 204.The base of first substrate 203 and second
Liquid crystal layer 200 is set between plate 101.
Liquid crystal display device 300 and the difference of liquid crystal display device 100 are that first substrate 203 and polaroid 204 are set
It is equipped with piezoelectric layer 205.The principle of piezo-electric effect is material under mechanical stress effect, causes internal positive and negative charge center with respect to position
Move and polarize, cause the end surfaces of material two phenomenon of the opposite bound charge of symbol, referred to as piezo-electric effect occur.In this case
The material of the piezoelectric layer used can be the most frequently used piezoelectric membrane, and with stronger piezoelectric properties, the size of piezoelectricity rate is with dividing
The consistent material of the orientation of the dipole contained in son, such as segregation PVF (film) and other organic for other of representative
Piezoelectricity (film) material；Or inorganic piezoelectric material (piezoelectric ceramics and piezoelectric monocrystal etc.) or organic piezoelectric film synthesis material
Material, these materials have high electromechanical coupling factor and dielectric constant, can effectively realize between electric energy and mechanical energy and mutually turn
Change, also easily carry out electronic match with related circuit.
One switch 302 is set between piezoelectric layer 205 and polaroid 204.When liquid crystal display device 300 is used as display screen
When, switch 302 is closed, and piezoelectric layer 205 is grounded, and the electrostatic charge that clipboard is produced is released.When the conduct of liquid crystal display device 300
Clipboard is in use, switch 302 disconnects, and finger pressure makes the liquid crystal deflection in pixel cell, light leak state is presented, so as to show
Go out the track left on liquid crystal display, realize the writing function of liquid crystal display.Pass through experiment, first substrate<During=0.2mm,
Voltage needed for the liquid crystal of liquid crystal layer is stood completely is 20V, so when the electrostatic potential that finger pressing is produced is less than 20V, can make
Liquid crystal deflection certain angle, is presented light leak state.Suitable material can be selected to build piezoelectric layer with further experiment, and set
The thickness of piezoelectric layer.Alternatively, the thickness of piezoelectric layer is 0.135-0.25um.
Switch 302 can use metal-oxide-semiconductor, such as NMOS tube or PMOS.The grid of metal-oxide-semiconductor receives control signal, source electrode
Connected with piezoelectric layer 205, drain electrode is connected to the ground.When control signal is high level, source electrode and drain electrode are turned on, and piezoelectric layer is connected to
Ground, electrostatic charge is released to ground.
, can be with settings button, for the break-make of controlling switch 302, so as to control on the liquid crystal display of liquid crystal display device
The release of electrostatic charge.The button can be the power knob of liquid crystal display device, and itself and power circuit are connected, and switch 302 breaks
Open, power circuit is not powered, liquid crystal display dark screen, at this moment liquid crystal display is used as clipboard；Switch 302 is closed, and power circuit is supplied
Electricity, liquid crystal display bright screen, release electrostatic voltage.
The utility model by existing liquid crystal display device increase piezoelectric layer, realize liquid crystal display device display and
Writing function, and do not increase power consumption.
Describe for convenience, above-mentioned liquid crystal display device merely illustrates the part related to improvement of the present utility model, its
His part, such as backlight module, down polaroid are not shown.But it can not judge that this implementation is new accordingly and not include these parts,
The new protection domain of this implementation can not be limited accordingly.
The preferred embodiment of the embodiment of the present disclosure is the foregoing is only, the embodiment of the present disclosure is not limited to, for this
For art personnel, the embodiment of the present disclosure can have various changes and change.All spiritual and originals in the embodiment of the present disclosure
Any modification, equivalent substitution and improvements made within reason etc., should be included within the protection domain of the embodiment of the present disclosure.
Claims (9)
1. a kind of liquid crystal display device, it is characterised in that including：
First substrate and second substrate, the first substrate and the second substrate are oppositely arranged；
Liquid crystal layer, between the first substrate and the second substrate；
Pixel electrode and public electrode, on the second substrate, by being added in the pixel electrode and the common electrical
Voltage between pole produces an electric field parallel to the liquid crystal layer to control the liquid crystal layer；
Polaroid, on the first substrate；
Piezoelectric layer, between the first substrate and the polaroid, the piezoelectric layer and a switch electrical connection, by described
Whether the switch control piezoelectric layer is grounded.
2. liquid crystal display device according to claim 1, it is characterised in that be additionally provided with the second substrate intersecting
Multiple controlling grid scan lines and multiple source data lines, each in the controlling grid scan line and the source data line intersect position
Install thin film transistor (TFT).
3. liquid crystal display device according to claim 1, it is characterised in that the switch is bright in the liquid crystal display device
Turn on, disconnected in the liquid crystal display device blank screen during screen.
4. liquid crystal display device according to claim 3, it is characterised in that the switch is metal-oxide-semiconductor.
5. liquid crystal display device according to claim 4, it is characterised in that the grid of the metal-oxide-semiconductor receives control signal,
The source electrode of the metal-oxide-semiconductor is connected to the piezoelectric layer, and the grid of the metal-oxide-semiconductor is connected to the ground.
6. liquid crystal display device according to claim 1, it is characterised in that the liquid crystal display device is also pressed including one
Button, the button and switch electrical connection, control the switch bright screen or blank screen.
7. liquid crystal display device according to claim 6, it is characterised in that the button is the liquid crystal display device
Power knob.
8. liquid crystal display device according to claim 1, it is characterised in that the polaroid and the piezoelectric layer pass through
OCA optics glue stickings, the piezoelectric layer and the first substrate are also by OCA optics glue stickings.
9. liquid crystal display device according to claim 1, it is characterised in that the thickness of the piezoelectric layer is 0.135-0.25
μm。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720021705.0U CN206421121U (en) | 2017-01-09 | 2017-01-09 | A kind of liquid crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720021705.0U CN206421121U (en) | 2017-01-09 | 2017-01-09 | A kind of liquid crystal display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206421121U true CN206421121U (en) | 2017-08-18 |
Family
ID=59574688
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720021705.0U Active CN206421121U (en) | 2017-01-09 | 2017-01-09 | A kind of liquid crystal display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206421121U (en) |
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2017
- 2017-01-09 CN CN201720021705.0U patent/CN206421121U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 215301, 1, Longteng Road, Kunshan, Jiangsu, Suzhou Patentee after: Kunshan Longteng Au Optronics Co Address before: 215301, 1, Longteng Road, Kunshan, Jiangsu, Suzhou Patentee before: Kunshan Longteng Optronics Co., Ltd. |
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| CP01 | Change in the name or title of a patent holder |