CN105739766B - A kind of touch control display apparatus and foreign matter detecting method, electric terminal based on it - Google Patents
A kind of touch control display apparatus and foreign matter detecting method, electric terminal based on it Download PDFInfo
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- CN105739766B CN105739766B CN201610061109.5A CN201610061109A CN105739766B CN 105739766 B CN105739766 B CN 105739766B CN 201610061109 A CN201610061109 A CN 201610061109A CN 105739766 B CN105739766 B CN 105739766B
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- 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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/94—Investigating contamination, e.g. dust
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- Circuit Arrangement For Electric Light Sources In General (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The embodiment of the invention discloses a kind of touch control display apparatus and the foreign matter detecting method based on it, electric terminal, wherein the touch control display apparatus includes：Multiple driving electrodes items, multiple detecting electrode items, driving chip, detection chip and multiple light-sensitive devices；The multiple driving electrodes item arranges along first direction, extends in a second direction, and each driving electrodes item is electrically connected with the driving chip；The multiple detecting electrode item arranges along the second direction, extends along the first direction, and each detecting electrode item is electrically connected with the detection chip；The multiple driving electrodes item and the multiple detecting electrode item constitute multiple overlapping regions, and the driving electrodes item and detecting electrode item of each overlapping region constitute coupled capacitor, and each coupled capacitor is in parallel with light-sensitive device described at least one.The embodiment of the present invention can detect foreign matter and user is prompted to clear up.
Description
Technical field
The present embodiments relate to electronic technology field more particularly to a kind of touch control display apparatus and based on its foreign matter inspection
Survey method, electric terminal.
Background technique
With the development of scientific and technological level, simple electric terminal having a display function is no longer satisfied the requirement of people.
Simultaneously there is the electric terminal of display function and touch function to have spread people's lives.People to the touch-control of electric terminal without
Doubting can remain in the foreign matter (especially greasy dirt) on finger on the touching display screen of electric terminal.Remain on touching display screen
Foreign matter not only will affect the display effect of electric terminal, also will affect touching display screen and receive the sensitive of touch control input signal
Degree, influences the experience of user.However some foreign matters remained on touching display screen are not easy visually to be identified, user is difficult to send out
Now and to it clear up.
Summary of the invention
The embodiment of the present invention proposes a kind of touch control display apparatus and foreign matter detecting method, electric terminal based on it, with solution
Certainly remain in foreign matter more difficult the problem of being found on electric terminal in the prior art.
For this purpose, the present invention uses following technical scheme：
In a first aspect, the embodiment of the invention provides a kind of touch control display apparatus, including：It is multiple driving electrodes items, multiple
Detecting electrode item, driving chip, detection chip and multiple light-sensitive devices；
The multiple driving electrodes item arranges along first direction, in a second direction extends, each driving electrodes item with
The driving chip electrical connection；
The multiple detecting electrode item arranges along the second direction, extends along the first direction, each detection
Electrode strip is electrically connected with the detection chip；
The multiple driving electrodes item and the multiple detecting electrode item constitute multiple overlapping regions, each overlay region
The driving electrodes item and detecting electrode item in domain constitute coupled capacitor, each coupled capacitor and at least one described light-sensitive device
It is in parallel.
Second aspect, the embodiment of the invention also provides a kind of electric terminal, the touch-control provided including first aspect is shown
Device.
The third aspect, the foreign matter inspection based on touch control display apparatus described in first aspect that the embodiment of the invention provides a kind of
Survey method, including：
When foreign bodies detection event is triggered, the voltage at each coupled capacitor both ends is obtained；
According to the voltage at each of acquisition coupled capacitor both ends, the voltage at each coupled capacitor both ends is calculated
Difference；
Whether the voltage difference for judging each coupled capacitor both ends is more than preset threshold, if it is,：It makes corresponding
Foreign matter prompt.
Touch control display apparatus and electric terminal provided in an embodiment of the present invention, by each coupled capacitor it is in parallel at least
One light-sensitive device, when the surface of touch control display apparatus and electric terminal is there are when foreign matter, touch control display apparatus and electric terminal
The light of sending has part and is fired back by foreign matter, is irradiated on light-sensitive device, since the resistance value of light-sensitive device can be with illumination
The difference of intensity and it is different, therefore, when there are foreign matter, due to the presence of light-sensitive device, the voltage difference meeting at coupled capacitor both ends
It changes, the voltage difference by analyzing coupled capacitor both ends can be easier to learn the presence of foreign matter, and mention to user
It wakes up.
Foreign matter detecting method provided in an embodiment of the present invention based on touch control display apparatus, when foreign bodies detection event is triggered
When, the voltage at each coupled capacitor both ends is obtained, according to the voltage at each coupled capacitor both ends of acquisition, calculates each coupling electricity
The voltage difference for holding both ends, judges whether the voltage difference at each coupled capacitor both ends is more than preset threshold, if it is,：Make phase
The foreign matter prompt answered.Via above scheme, more easily foreign matter can be detected, and user is reminded.
Detailed description of the invention
Fig. 1 is the schematic top plan view of touch control display apparatus provided in an embodiment of the present invention.
Fig. 2 is the schematic cross-sectional view of touch control display apparatus provided in an embodiment of the present invention.
Fig. 3 is the schematic top plan view of film layer where the driving electrodes item in Fig. 1.
Fig. 4 is the schematic top plan view of film layer where the detecting electrode item in Fig. 1.
Fig. 5 is the flow diagram of the foreign matter detecting method provided in an embodiment of the present invention based on touch control display apparatus.
Specific embodiment
To further illustrate the technical scheme of the present invention below with reference to the accompanying drawings and specific embodiments.It is understood that
It is that specific embodiment described herein is used only for explaining the present invention rather than limiting the invention.It further needs exist for illustrating
, only the parts related to the present invention are shown for ease of description, in attached drawing rather than entire infrastructure.
Fig. 1 is the schematic top plan view of touch control display apparatus provided in an embodiment of the present invention.Fig. 2 is that the embodiment of the present invention provides
Touch control display apparatus schematic cross-sectional view.Fig. 3 is the schematic top plan view of film layer where the driving electrodes item in Fig. 1.Fig. 4 is figure
The schematic top plan view of film layer where detecting electrode item in 1.As Figure 1-Figure 4, which includes：Multiple drivings
Electrode strip 101, multiple detecting electrode items 102, driving chip 103, detection chip 104 and multiple light-sensitive devices 105.
Multiple driving electrodes items 101 extend along first direction arrangement 100, in a second direction 200, each driving electrodes item
101 are electrically connected with driving chip 103.
Multiple detecting electrode items 102 arrange 200 in a second direction, extend along first direction 100, each detecting electrode item
102 are electrically connected with detection chip 104.
Multiple driving electrodes items 101 and multiple detecting electrode items 102 constitute multiple overlapping regions 106, each overlapping region
106 driving electrodes item 101 and detecting electrode item 102 constitutes coupled capacitor, each coupled capacitor and at least one light-sensitive device
105 is in parallel.
Touch control display apparatus provided in an embodiment of the present invention passes through at least one photosensor in parallel in each coupled capacitor
Part, when the surface of touch control display apparatus is there are when foreign matter, it is different that the light that touch control display apparatus and electric terminal issue has part
Object fires back, and is irradiated on light-sensitive device, since the resistance value of light-sensitive device can be different with the difference of intensity of illumination, because
This, when there are foreign matter, due to the presence of light-sensitive device, the voltage difference at coupled capacitor both ends can change, by analyzing coupling
The voltage difference for closing capacitor both ends can be easier to learn the presence of foreign matter, and remind user.
Each driving electrodes item 101 can be electrically connected by metal wire 107 with driving chip 103；Each detecting electrode item
102 can be electrically connected by metal wire 107 with detection chip 104.
Each coupled capacitor is in parallel at least one light-sensitive device 105, i.e.,：Assuming that at least one light-sensitive device 105 is constituted
The driving electrodes item 101 of light-sensitive device group, each overlapping region 106 is electrically connected with one end of light-sensitive device group；Corresponding overlay region
The detecting electrode item 102 in domain 106 is electrically connected with the other end of light-sensitive device group, when light-sensitive device group includes at least two photosensors
When part 105, the series connection of at least two light-sensitive devices 105.
Light-sensitive device 105 can be photosensitive resin block or photo resistance.
Light-sensitive device 105 is preferably the material with light transmission features.Such set-up mode, will not influence touch control display apparatus
Display effect.
As shown in Fig. 2, light-sensitive device 105 is located at 102 place of film layer and detecting electrode item where driving electrodes item 101
Between film layer.It is understood that the driving electrodes item 101 of each overlapping region 106 passes through via hole in such set-up mode
108 are electrically connected with one end of light-sensitive device group；The detecting electrode item 102 of corresponding overlapping region 106 passes through via hole 108 and photosensor
The other end of part group is electrically connected.
It should be noted that film layer and detecting electrode item of the light-sensitive device 105 in addition to being located at 101 place of driving electrodes item
Except between film layer where 102, same film layer can also be located at driving electrodes item 101, it can also be with detecting electrode item 102
Positioned at same film layer.Such set-up mode can reduce the thickness of touch control display apparatus.It is understood that working as light-sensitive device
105 when being located at same film layer with driving electrodes item 101, and the detecting electrode item 102 of overlapping region 106 can pass through via hole connection
Mode is electrically connected with one end of light-sensitive device group；When light-sensitive device 105 and detecting electrode item 102 are located at same film layer, overlapping
The driving electrodes item 101 in region 106 can be electrically connected in such a way that via hole connects with one end of light-sensitive device group.
As shown in Fig. 2, light-sensitive device 105 is located at the display area of touch control display apparatus.It should be noted that light-sensitive device
105 other than being located at the display area of touch control display apparatus, may be located on the non-display area of touch control display apparatus.It can be with
Understand, when light-sensitive device 105 is located at the non-display area of touch control display apparatus, the either light transmission of light-sensitive device 105
Or it is non-transparent, it all will not influence the display effect of touch control display apparatus, still, such set-up mode undoubtedly will increase touch-control
The size of display device, and make light-sensitive device 105 and the connection of coupled capacitor more inconvenient.Correspondingly, when light-sensitive device 105
When the display area of touch control display apparatus, not will increase the size of touch control display apparatus, and enable to light-sensitive device 105 with
The connection of coupled capacitor is more convenient.
It is understood that driving electrodes item 101 and detecting electrode item 102 belong to realize touch-control in touch control display apparatus
The component of function.To realize the touch control display apparatus that not only there is display function but also there is touch function, the touch control display apparatus
Can also include：Display device, for realizing display function.
Driving electrodes item 101, detecting electrode item 102 and light-sensitive device 105 can be located on display device, i.e.,：Touching
It controls in display device, the component with touch function is located on the component of display function, the touch control display apparatus of such structure
Belong to external hanging type (i.e.：Oncell formula) touch control display apparatus.
Driving electrodes item 101, detecting electrode item 102 and light-sensitive device 105 can be located among display device, i.e.,：Touching
It controls in display device, the component with touch function is located among the component of display function, the touch control display apparatus of such structure
Belong to it is embedded (i.e.：Incell formula) touch control display apparatus.
It should be noted that touch control display apparatus provided in an embodiment of the present invention can be the touch-control display dress of any structure
Set (such as：External hanging type and embedded).
Fig. 5 is the flow diagram of the foreign matter detecting method provided in an embodiment of the present invention based on touch control display apparatus.Such as
Shown in Fig. 5, this method includes：
Step 501, when foreign bodies detection event is triggered, obtain the voltage at each coupled capacitor both ends.
When foreign bodies detection event is triggered, driving chip provides driving electrodes for driving electrodes item, it is to be understood that
Driving chip is that the driving electrodes that each driving electrodes item provides are identical；Voltage of the detection chip to each detecting electrode item
It is detected, realizes the voltage for obtaining each coupled capacitor both ends.
Foreign bodies detection event, which is triggered, can be the foreign bodies detection instruction for having received user's input, foreign bodies detection instruction
Input can be and realized by touching corresponding button.
Due to driving electrodes item and detecting electrode item be combined with each other realize touch-control be also by driving chip be driving electrodes item
Driving electrodes are provided, detection chip carries out detection realization to detecting electrode item, can be in order to distinguish touch-control and foreign bodies detection
(i.e. by two class driving electrodes of setting：One kind is：Driving chip is the driving electrodes that driving electrodes item provides when foreign bodies detection；
It is another kind of to be：Driving chip is the driving electrodes that provide of driving electrodes item when touch-control) difference and light-sensitive device resistance value
Difference is realized and is distinguished.
Further, since the finger of user can also emit certain illumination when user carries out touch-control, it is therefore, different in progress
When analyte detection, for the accuracy of detection, user does not preferably carry out touch-control to touch control display apparatus.
The detection of foreign matter can carry out under the display state of normal touch control display apparatus, still, under such state
The intensity of illumination of touch control display apparatus is smaller, will affect the accuracy of detection.Therefore, in order to guarantee the accuracy of foreign bodies detection,
When foreign bodies detection event is triggered, the luminescent device in touch control display apparatus may be at whole illuminating states, at this point, touch-control
The intensity of illumination of display device is larger, can guarantee the accuracy of foreign bodies detection.
Step 502, the voltage according to each coupled capacitor both ends of acquisition, calculate the voltage at each coupled capacitor both ends
Difference.
According to the electricity of the voltage of the corresponding driving electrodes item of each coupled capacitor obtained in step 501 and detecting electrode item
Pressure, obtains the voltage difference at each coupled capacitor both ends.
Whether step 503, the voltage difference for judging each coupled capacitor both ends are more than preset threshold, if it is,：Execute step
Rapid 504, corresponding foreign matter prompt is made.
When there are foreign matter, the light that touch control display apparatus is launched has part light to be come by foreign matter bounce back, is irradiated to light
On sensing device, since the resistance value of light-sensitive device can be different with the difference of intensity of illumination, when there is illumination to be mapped to photosensor
When on part, due to the presence of light-sensitive device, the voltage difference at coupled capacitor both ends can change.
Whether the voltage difference for judging each coupled capacitor both ends is more than preset threshold, if it is,：Make corresponding foreign matter
Prompt.Foreign matter prompt can be the region existing for foreign matter present certain Warning Mark (such as：Wire frame etc.).
It is understood that position existing for foreign matter is the position of the changed coupled capacitor of voltage difference of the two ends.
Preset threshold can be the numerical value of touch control display apparatus default, be also possible to the numerical value by user's self-setting.
Foreign matter detecting method provided in an embodiment of the present invention based on touch control display apparatus, when foreign bodies detection event is triggered
When, the voltage at each coupled capacitor both ends is obtained, according to the voltage at each coupled capacitor both ends of acquisition, calculates each coupling electricity
The voltage difference for holding both ends, judges whether the voltage difference at each coupled capacitor both ends is more than preset threshold, if it is,：Make phase
The foreign matter prompt answered.Via above scheme, more easily foreign matter can be detected, and user is reminded.
In addition, the embodiment of the invention also provides a kind of electric terminal, including touch-control provided by the above embodiment display dress
It sets.The electric terminal can be mobile phone or tablet computer etc. it is any not only have display function but also there is the touch-control of touch function to show
Device.The electric terminal has the beneficial effect of above-mentioned touch control display apparatus, can specifically participate in above-described embodiment, no longer superfluous herein
It states.
Note that the above is only a better embodiment of the present invention and the applied technical principle.It will be appreciated by those skilled in the art that
The invention is not limited to the specific embodiments described herein, be able to carry out for a person skilled in the art it is various it is apparent variation,
It readjusts and substitutes without departing from protection scope of the present invention.Therefore, although being carried out by above embodiments to the present invention
It is described in further detail, but the present invention is not limited to the above embodiments only, without departing from the inventive concept, also
It may include more other equivalent embodiments, and the scope of the invention is determined by the scope of the appended claims.
Claims (9)
1. a kind of touch control display apparatus, which is characterized in that including：Multiple driving electrodes items, multiple detecting electrode items, driving core
Piece, detection chip and multiple light-sensitive devices；
The multiple driving electrodes item arranges along first direction, in a second direction extends, each driving electrodes item with it is described
Driving chip electrical connection；
The multiple detecting electrode item arranges along the second direction, extends along the first direction, each detecting electrode
Item is electrically connected with the detection chip；
The multiple driving electrodes item and the multiple detecting electrode item constitute multiple overlapping regions, each overlapping region
Driving electrodes item and detecting electrode item constitute coupled capacitor, and each coupled capacitor and at least one described light-sensitive device are simultaneously
Connection；
Wherein, the light-sensitive device is used for：
The reflected light of the light of the touch control display apparatus sending of foreign matter reflection is received, different resistance is presented in the difference of intensity of reflected light
Value, causes the voltage difference at the coupled capacitor both ends in parallel with the light-sensitive device that can change.
2. touch control display apparatus according to claim 1, which is characterized in that the light-sensitive device is located at the touch-control and shows
The display area of device or non-display area.
3. touch control display apparatus according to claim 1, which is characterized in that the light-sensitive device be photosensitive resin block or
Photo resistance.
4. touch control display apparatus according to claim 1, which is characterized in that the light-sensitive device has light transmission features.
5. touch control display apparatus according to claim 1, which is characterized in that the light-sensitive device and the driving electrodes item
Positioned at same film layer；Alternatively,
The light-sensitive device and the detecting electrode item are located at same film layer；Alternatively,
The light-sensitive device is located between the film layer where the driving electrodes item and the film layer where the detecting electrode item.
6. touch control display apparatus according to claim 1, which is characterized in that further include：Display device；
The driving electrodes item, the detecting electrode item and the light-sensitive device are located on the display device；Alternatively,
The driving electrodes item, the detecting electrode item and the light-sensitive device are located in the display device.
7. a kind of electric terminal, which is characterized in that including any touch control display apparatus of claim 1-6.
8. a kind of foreign matter detecting method based on any touch control display apparatus of claim 1-6, which is characterized in that packet
It includes：
When foreign bodies detection event is triggered, the voltage at each coupled capacitor both ends is obtained；
According to the voltage at each of acquisition coupled capacitor both ends, the voltage difference at each coupled capacitor both ends is calculated；
Whether the voltage difference for judging each coupled capacitor both ends is more than preset threshold, if it is,：Make corresponding foreign matter
Prompt.
9. a kind of computer readable storage medium, is stored thereon with computer program, which is characterized in that the program is held by processor
The foreign matter detecting method of touch control display apparatus as claimed in claim 8 is realized when row.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610061109.5A CN105739766B (en) | 2016-01-28 | 2016-01-28 | A kind of touch control display apparatus and foreign matter detecting method, electric terminal based on it |
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| CN201610061109.5A CN105739766B (en) | 2016-01-28 | 2016-01-28 | A kind of touch control display apparatus and foreign matter detecting method, electric terminal based on it |
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| CN105739766B true CN105739766B (en) | 2018-11-20 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109151143B (en) * | 2018-06-28 | 2020-09-11 | 维沃移动通信有限公司 | Foreign matter detection structure and method and mobile terminal |
| CN112858390B (en) * | 2020-12-31 | 2022-11-15 | 云谷（固安）科技有限公司 | Foreign matter testing device and foreign matter testing method |
| CN112947787A (en) * | 2021-02-23 | 2021-06-11 | 北京京东方显示技术有限公司 | Touch panel, display device, display system and touch method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102043538A (en) * | 2009-10-17 | 2011-05-04 | 比亚迪股份有限公司 | Light-induced touch screen and detection system thereof |
| CN103645822A (en) * | 2013-12-24 | 2014-03-19 | 上海华勤通讯技术有限公司 | Foreign matter detection method for touch screen and touch screen |
| JP2015207033A (en) * | 2014-04-17 | 2015-11-19 | シャープ株式会社 | Touch panel device and touch detection method |
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2016
- 2016-01-28 CN CN201610061109.5A patent/CN105739766B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102043538A (en) * | 2009-10-17 | 2011-05-04 | 比亚迪股份有限公司 | Light-induced touch screen and detection system thereof |
| CN103645822A (en) * | 2013-12-24 | 2014-03-19 | 上海华勤通讯技术有限公司 | Foreign matter detection method for touch screen and touch screen |
| JP2015207033A (en) * | 2014-04-17 | 2015-11-19 | シャープ株式会社 | Touch panel device and touch detection method |
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