CN105676500A - Liquid crystal display and control method thereof - Google Patents
Liquid crystal display and control method thereof Download PDFInfo
- Publication number
- CN105676500A CN105676500A CN201610187198.8A CN201610187198A CN105676500A CN 105676500 A CN105676500 A CN 105676500A CN 201610187198 A CN201610187198 A CN 201610187198A CN 105676500 A CN105676500 A CN 105676500A
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- touch screen
- control signal
- signal
- liquid crystal
- display panels
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/13338—Input devices, e.g. touch panels
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Mathematical Physics (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Liquid Crystal (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The invention discloses a liquid crystal display. The liquid crystal display comprises a liquid-crystal display panel, a touch screen, a touch screen circuit chip and a power supplying module, wherein the touch screen circuit chip is connected with the touch screen and is used for detecting whether the touch screen is touched or not and outputting control signals; the power supplying module is separately connected with the touch screen circuit chip and the liquid-crystal display panel and is used for supplying direct-current signals or alternate-current signals to the liquid-crystal display panel according to the control signals. According to the liquid crystal display with the touch screen and the control method thereof, provided by the invention, the alternate-current signals are supplied to a color filter side of the liquid-crystal display panel when the touch screen is not touched so as to improve the phenomenon of image stacking, the direct-current signals are supplied to the color filter side of the liquid-crystal display panel when the touch screen is touched so as to avoid a mistaken touching phenomenon when the touch screen is used, and thus the accuracy and precision of touch are improved.
Description
Technical field
The invention belongs to Display Technique field, more particularly, to a kind of liquid crystal indicator and control method thereof.
Background technology
Liquid crystal indicator, for utilizing liquid crystal molecule under different ordered states, has the characteristic of different polarizations or refraction effect to control the penetration of light for light, and then makes liquid crystal indicator be produced image.
Stable twisted nematic (TwistedNematic, the TN) liquid crystal indicator that general tradition uses is subject to the impact of liquid crystal molecule structure and optical characteristics, and visual angle is very narrow. Therefore, develop the wide viewing angle liquid crystal display device of other kind of kenel, such as: vertical orientation type (VerticalAlignment, VA) liquid crystal indicator, plane inner switching type (In-PlanSwitch, IPS) liquid crystal display and fringe field switch type (FringeFieldSwitching, FFS) liquid crystal display.
Based on the characteristic that liquid crystal molecule rotates under electric field, liquid crystal molecule can be divided into positive type liquid crystal molecule and negative type liquid crystal molecule. The advantage that (responsetime) is fast it is said that in general, though positive type liquid crystal molecule responds the time, but its light transmittance is low. Otherwise, negative type liquid crystal molecule then has light transmittance high, but the shortcoming that the response time is longer. Therefore, in IPS and FFS liquid crystal indicator, when using its liquid crystal layer of negative type liquid crystal molecular composition, it will usually add the liquid crystal molecule of molecular weight, increase the intermolecular sliding of negative type liquid crystal, to improve longer shortcoming of above-mentioned response time. But, when the liquid-crystal composition forming this liquid crystal layer is heated or is irradiated by external environment condition light, those small molecule liquid crystal easily crack generation electronics or free radical (radical), and produced electrons runs off from both alignment layers place, make the voltage retention (VoltageHoldingRatio of this liquid crystal indicator, VHR) decline, cause orientation abnormal, and then affect ghost (ImageStacking) and the optical appearance of liquid crystal indicator.
The existing scheme improving ghost (ImageStacking) is add AC signal ACVCOM in the color membrane substrates side of display panels, but it is following, panel noise (PanelNoise) also can become much larger, for the liquid crystal indicator with touch screen, owing to the increase of PanelNoise can affect accuracy and the precision of touch, such liquid crystal indicator cannot take into account the use of IS and Touch touch screen simultaneously, affects the real value of product.
Summary of the invention
It is an object of the invention to provide a kind of liquid crystal indicator and control method thereof.
According to an aspect of the present invention, it is provided that a kind of liquid crystal indicator, including display panels; Touch screen; Touch screen circuitry chip, is connected with described touch screen, is used for detecting whether described touch screen is touched and exports control signal; Supply module, is connected with described touch screen circuitry chip and described display panels respectively, for providing direct current signal or AC signal according to control signal to described display panels; Wherein, described touch screen circuitry chip is for detecting that described touch screen generates the first control signal when being touched, detecting that described touch screen generates the second control signal when not being touched; Supply module, for providing direct current signal according to described first control signal to described display panels, provides AC signal according to described second control signal to described display panels.
Preferably, described display panels includes the array base palte and the color membrane substrates that are oppositely arranged, and described color membrane substrates is provided above metal level.
Preferably, described supply module is connected with the metal level being arranged on described color membrane substrates, for providing direct current signal or AC signal to described metal level.
Preferably, described supply module includes power supply unit and selects unit, wherein, said supply unit is used for producing direct current signal and AC signal, and described selection unit provides direct current signal or AC signal for controlling said supply unit according to described control signal to described display panels.
Preferably, described touch screen circuitry chip continues to change at the inductance capacitance detected on described touch screen, and inductance capacitance transformation period less than predetermined threshold value time generate the first control signal.
Preferably, described first control signal is high level, and described second control signal is low level.
According to a further aspect in the invention, it is provided that the control method of a kind of liquid crystal indicator, generate the first control signal including: touch screen circuitry chip when touch screen is touched detecting, generate the second control signal when touch screen is not touched detecting; Supply module provides direct current signal according to described first control signal to display panels, provides AC signal according to described second control signal to display panels.
Preferably, described display panels includes the array base palte and the color membrane substrates that are oppositely arranged, and described color membrane substrates is provided above metal level.
Preferably, described supply module provides direct current signal or AC signal to the metal level being arranged on described color membrane substrates.
Preferably, described touch screen circuitry chip continues to change at the inductance capacitance detected on described touch screen, and inductance capacitance transformation period less than predetermined threshold value time generate the first control signal, described first control signal is high level, and described second control signal is low level.
Liquid crystal indicator with touch screen provided by the invention and control method thereof, by providing AC signal when touch screen is not touched to the color membrane substrates side of display panels, improve ghost (ImageStacking) phenomenon, and direct current signal is provided to the color membrane substrates side of display panels when touch screen is touched, avoid using, during touch screen, false touch phenomenon occurs, improve the accuracy and precision that touch.
Accompanying drawing explanation
By referring to the accompanying drawing description to the embodiment of the present invention, above-mentioned and other purposes of the present invention, feature and advantage will be apparent from, in the accompanying drawings:
Fig. 1 illustrates the structural representation of liquid crystal indicator according to embodiments of the present invention;
Fig. 2 illustrates the schematic diagram of display panels according to embodiments of the present invention;
Fig. 3 illustrates the control flow chart of liquid crystal indicator according to embodiments of the present invention.
Detailed description of the invention
It is more fully described various embodiments of the present invention hereinafter with reference to accompanying drawing. In various figures, identical element adopts same or similar accompanying drawing labelling to represent. For the sake of clarity, the various piece in accompanying drawing is not necessarily to scale.
The present invention can present in a variety of manners, some of them example explained below.
Fig. 1 illustrates the structural representation of liquid crystal indicator according to embodiments of the present invention. As it is shown in figure 1, described liquid crystal indicator includes display panels 10, touch screen 11, touch screen circuitry chip 12 and supply module 13.
Wherein, as in figure 2 it is shown, display panels 10 includes the array base palte 101 and the color membrane substrates (ColorFilter) 102 that are oppositely arranged, described color membrane substrates 102 is provided above metal level 103.
In the present embodiment, what described touch screen 11 can be independent is arranged on above described display panels 10, it is also possible to be integrated in described display panels 10.
Touch screen circuitry chip 12 is connected with described touch screen 11, is used for detecting whether described touch screen 11 is touched and exports control signal.
In the present embodiment, whether described touch screen circuitry chip 12 changes judge whether described touch screen 11 is touched by detecting the inductance capacitance of described touch screen, detecting that described touch screen 11 generates the first control signal when being touched, detecting that described touch screen 11 generates the second control signal when not being touched.
In a preferred embodiment, described first control signal is high level, and described second control signal is low level. Described touch screen circuitry chip 12 continues to change at the inductance capacitance detected on described touch screen 11, and inductance capacitance transformation period less than predetermined threshold value time generate the first control signal. Wherein, described predetermined threshold value can be 10 μ s.
Supply module 13, is connected with described touch screen circuitry chip 12 and described display panels 10 respectively, for providing direct current signal or AC signal according to control signal to described display panels 10.
In the present embodiment, described supply module 13 is connected with the metal level 103 being arranged on described color membrane substrates 102, for providing direct current signal or AC signal to described metal level 103.
Supply module 13 provides direct current signal according to described first control signal to described display panels 10, provides AC signal according to described second control signal to described display panels 10.
In a preferred embodiment, described supply module 13 includes selecting unit 131 and power supply unit 132, wherein, said supply unit 132 is used for producing direct current signal and AC signal, and described selection unit 131 provides direct current signal or AC signal for controlling said supply unit 132 according to described control signal to described display panels 10.
Liquid crystal indicator with touch screen provided by the invention, by providing AC signal when touch screen is not touched to the color membrane substrates side of display panels, improve ghost (ImageStacking) phenomenon, and direct current signal is provided to the color membrane substrates side of display panels when touch screen is touched, avoid using, during touch screen, false touch phenomenon occurs, improve the accuracy and precision that touch.
Fig. 3 illustrates the control flow chart of liquid crystal indicator according to embodiments of the present invention. As it is shown on figure 3, described control method comprises the following steps.
In step S01, touch screen circuitry chip generates the first control signal detecting when touch screen is touched, generate the second control signal detecting when touch screen is not touched.
In the present embodiment, as in figure 2 it is shown, display panels 10 includes the array base palte 101 and the color membrane substrates (ColorFilter) 102 that are oppositely arranged, described color membrane substrates 102 is provided above metal level 103. Touch screen 11 can be independent be arranged on above described display panels 10, it is also possible to be integrated in described display panels 10.
Touch screen circuitry chip 12 is connected with described touch screen 11, is used for detecting whether described touch screen 11 is touched and exports control signal.
In the present embodiment, whether described touch screen circuitry chip 12 changes judge whether described touch screen 11 is touched by detecting the inductance capacitance of described touch screen, detecting that described touch screen 11 generates the first control signal when being touched, detecting that described touch screen 11 generates the second control signal when not being touched.
In one preferred embodiment, described first control signal is high level, and described second control signal is low level. Described touch screen circuitry chip 12 continues to change at the inductance capacitance detected on described touch screen 11, and inductance capacitance transformation period less than predetermined threshold value time generate the first control signal. Wherein, described predetermined threshold value can be 10 μ s.
In step S02, supply module provides direct current signal according to described first control signal to described display panels, provides AC signal according to described second control signal to described display panels.
In the present embodiment, described supply module 13 is connected with the metal level 103 being arranged on described color membrane substrates 102, for providing direct current signal or AC signal to described metal level 103.
Supply module 13 provides direct current signal according to described first control signal to described display panels 10, provides AC signal according to described second control signal to described display panels 10.
The control method of liquid crystal indicator provided by the invention, by providing AC signal when touch screen 11 is not touched to the color membrane substrates side of display panels, improve ghost (ImageStacking) phenomenon, and direct current signal is provided to the color membrane substrates side of display panels when touch screen 11 is touched, avoid using, during touch screen, false touch phenomenon occurs, improve the accuracy and precision that touch.
According to embodiments of the invention as described above, these embodiments do not have all of details of detailed descriptionthe, are not intended to the specific embodiment that this invention is only described yet. Obviously, as described above, can make many modifications and variations. These embodiments are chosen and specifically described to this specification, is to explain principles of the invention and practical application better, so that skilled artisan can utilize the present invention and the amendment on basis of the present invention to use well. Protection scope of the present invention should be as the criterion with the scope that the claims in the present invention define.
Claims (10)
1. a liquid crystal indicator, including:
Display panels;
Touch screen;
Touch screen circuitry chip, is connected with described touch screen, is used for detecting whether described touch screen is touched and exports control signal;
Supply module, is connected with described touch screen circuitry chip and described display panels respectively, for providing direct current signal or AC signal according to control signal to described display panels;
Wherein, described touch screen circuitry chip is for detecting that described touch screen generates the first control signal when being touched, detecting that described touch screen generates the second control signal when not being touched;
Supply module, for providing direct current signal according to described first control signal to described display panels, provides AC signal according to described second control signal to described display panels.
2. liquid crystal indicator according to claim 1, wherein, described display panels includes the array base palte and the color membrane substrates that are oppositely arranged, and described color membrane substrates is provided above metal level.
3. liquid crystal indicator according to claim 2, wherein, described supply module is connected with the metal level being arranged on described color membrane substrates, for providing direct current signal or AC signal to described metal level.
4. liquid crystal indicator according to claim 1, wherein, described supply module includes power supply unit and selects unit, wherein, said supply unit is used for producing direct current signal and AC signal, and described selection unit provides direct current signal or AC signal for controlling said supply unit according to described control signal to described display panels.
5. liquid crystal indicator according to claim 1, wherein, described touch screen circuitry chip continues to change at the inductance capacitance detected on described touch screen, and inductance capacitance transformation period less than predetermined threshold value time generate the first control signal.
6. liquid crystal indicator according to claim 5, wherein, described first control signal is high level, and described second control signal is low level.
7. a control method for liquid crystal indicator, including:
Touch screen circuitry chip generates the first control signal detecting when touch screen is touched, generate the second control signal detecting when touch screen is not touched;
Supply module provides direct current signal according to described first control signal to display panels, provides AC signal according to described second control signal to display panels.
8. control method according to claim 7, wherein, described display panels includes the array base palte and the color membrane substrates that are oppositely arranged, and described color membrane substrates is provided above metal level.
9. control method according to claim 8, wherein, described supply module provides direct current signal or AC signal to the metal level on described color membrane substrates.
10. control method according to claim 7, wherein, described touch screen circuitry chip continues to change at the inductance capacitance detected on described touch screen, and inductance capacitance transformation period less than predetermined threshold value time generate the first control signal, described first control signal is high level, and described second control signal is low level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610187198.8A CN105676500B (en) | 2016-03-29 | 2016-03-29 | Liquid crystal display device and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610187198.8A CN105676500B (en) | 2016-03-29 | 2016-03-29 | Liquid crystal display device and control method thereof |
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| Publication Number | Publication Date |
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| CN105676500A true CN105676500A (en) | 2016-06-15 |
| CN105676500B CN105676500B (en) | 2020-12-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610187198.8A Active CN105676500B (en) | 2016-03-29 | 2016-03-29 | Liquid crystal display device and control method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106652930A (en) * | 2016-10-19 | 2017-05-10 | 厦门天马微电子有限公司 | Display panel, data driving circuit thereof, and display device |
| US11880524B2 (en) | 2020-09-30 | 2024-01-23 | Beijing Boe Display Technology Co., Ltd. | Display touch device with power supply control function and control method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5777607A (en) * | 1995-02-22 | 1998-07-07 | U.S. Philips Corporation | Low-cost resistive tablet with touch and stylus functionality |
| JP2000231120A (en) * | 1999-02-10 | 2000-08-22 | Nec Corp | Active matrix liquid crystal display device and its control method |
| CN102768423A (en) * | 2011-05-06 | 2012-11-07 | 株式会社日本显示器东 | Display device |
| CN103424909A (en) * | 2012-05-24 | 2013-12-04 | 乐金显示有限公司 | In-cell touch type liquid crystal display device and method for driving same |
| CN104281321A (en) * | 2014-09-24 | 2015-01-14 | 宇昶半导体股份有限公司 | Driving method of projective touch panel |
| CN105044971A (en) * | 2015-08-27 | 2015-11-11 | 昆山龙腾光电有限公司 | Liquid crystal display device |
-
2016
- 2016-03-29 CN CN201610187198.8A patent/CN105676500B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5777607A (en) * | 1995-02-22 | 1998-07-07 | U.S. Philips Corporation | Low-cost resistive tablet with touch and stylus functionality |
| JP2000231120A (en) * | 1999-02-10 | 2000-08-22 | Nec Corp | Active matrix liquid crystal display device and its control method |
| CN102768423A (en) * | 2011-05-06 | 2012-11-07 | 株式会社日本显示器东 | Display device |
| CN103424909A (en) * | 2012-05-24 | 2013-12-04 | 乐金显示有限公司 | In-cell touch type liquid crystal display device and method for driving same |
| CN104281321A (en) * | 2014-09-24 | 2015-01-14 | 宇昶半导体股份有限公司 | Driving method of projective touch panel |
| CN105044971A (en) * | 2015-08-27 | 2015-11-11 | 昆山龙腾光电有限公司 | Liquid crystal display device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106652930A (en) * | 2016-10-19 | 2017-05-10 | 厦门天马微电子有限公司 | Display panel, data driving circuit thereof, and display device |
| CN106652930B (en) * | 2016-10-19 | 2019-03-26 | 厦门天马微电子有限公司 | Display panel and its data drive circuit and display device |
| US11880524B2 (en) | 2020-09-30 | 2024-01-23 | Beijing Boe Display Technology Co., Ltd. | Display touch device with power supply control function and control method |
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| CN105676500B (en) | 2020-12-29 |
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Address after: 215301, 1, Longteng Road, Kunshan, Jiangsu, Suzhou Applicant after: Kunshan Longteng Au Optronics Co Address before: 215301, 1, Longteng Road, Kunshan, Jiangsu, Suzhou Applicant before: Kunshan Longteng Optronics Co., Ltd. |
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