CN108415187A - A kind of display - Google Patents
A kind of display Download PDFInfo
- Publication number
- CN108415187A CN108415187A CN201810365437.3A CN201810365437A CN108415187A CN 108415187 A CN108415187 A CN 108415187A CN 201810365437 A CN201810365437 A CN 201810365437A CN 108415187 A CN108415187 A CN 108415187A
- Authority
- CN
- China
- Prior art keywords
- light
- photosensitive film
- liquid crystal
- film
- crystal module
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- G06F3/042—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means
Abstract
The present invention provides a kind of manufacturing cost is relatively low, and be not easy to be interfered by external environmental light, touch the good display of effect, including backlight module and Liquid Crystal Module, the first polarizing film is equipped between the backlight module and Liquid Crystal Module, the outside of the Liquid Crystal Module is equipped with the second polarizing film；Colored filter is equipped between the Liquid Crystal Module and second polarizing film；Photosensitive film is equipped between the Liquid Crystal Module and first polarizing film；The photosensitive film, including light-receiving surface and shady face, the light-receiving surface light irradiation generate electric signal, and the shady face light irradiation does not generate electric signal；The light-receiving surface is close to the side of the Liquid Crystal Module.
Description
Technical field
The present invention relates to liquid crystal technology fields, and in particular to a kind of display that can effectively reduce external environmental light interference
Device.
Background technology
Liquid crystal display is the display equipment of planar ultra-thin, is widely used in each electronic product, especially exists
It is widely used on the products such as computer, TV, mobile phone.And current touch screen becomes man-machine friendship due to its easily touch control manner
Mutual important medium component, is widely used in various electronic products, is especially widely used in display product.
The existing display with touch function typically on assembled display pannel, then installs one piece
Touch panel.The mode of installation touch panel, can not only increase the cost, weight and thickness of display after this, but also due to
The light transmittance of touch panel usually only 86% or so, therefore the display brightness of display can be also influenced, user's eyesight is made
At influence.
Now widely used touching technique includes：Capacitive touch technology, resistive touch technology, optical touch technology harmony
Wave touching technique.Wherein optical touch technology is to pass through touch using camera or photosensitive sensor as the optical signal of light source
When change in optical signal carry out positioning touch location.It is wherein most widely used with optical touch technology.
Now widely used optical touch technology usually using infrared light as light signal, it is infrared such as 950nm
LED, while using infrared light transducer[sensor as optical receiving device.But usually used infrared light transducer[sensor is with wider
Spectral characteristic is easily interfered by external environmental light, influences to touch effect.
Invention content
It the purpose of the present invention is to provide a kind of manufacturing cost is relatively low, and is not easy to be interfered by external environmental light, touch
The good display of effect.
In order to achieve the above object, the specific technical solution of the present invention is as follows：
A kind of display, including backlight module and Liquid Crystal Module,
The first polarizing film is equipped between the backlight module and Liquid Crystal Module, the outside of the Liquid Crystal Module is equipped with second partially
Shake piece；Colored filter is equipped between the Liquid Crystal Module and second polarizing film；The Liquid Crystal Module and described first is partially
It shakes and is equipped with photosensitive film between piece；
The photosensitive film, including light-receiving surface and shady face, the light-receiving surface light irradiation generate electric signal, the shady face
Light irradiation does not generate electric signal；The light-receiving surface is close to the side of the Liquid Crystal Module.
Further, the photosensitive film, be backlight can by two-dimensional optical mesh structure, the reticular structure
Each node is touch coordinate.
Further, the photosensitive film, node are the dot reticular structure of dot.
Further, the photosensitive film, it is 4096 × 4096 to touch precision.
Further, the photosensitive film, sensitive light source include the blue light source of wave-length coverage 400nm to 470nm；
The blue light source, surface be coated with the high energy shortwave blue light that blue light source is sent out can be converted to spectrum compared with
The faint yellow fluorescent coating of the wide light based on yellow.
Further, the photosensitive film is selenium photosensitive film.
Further, the selenium photosensitive film touches the dot reticular structure that precision is 4096 × 4096, each dot
Maximum gauge be 0.1mm.
Further, the electrode of the selenium photosensitive film is evenly arranged in first polarizing film according to longitude and latitude cable architecture
On film substrate.
Further, first polarizing film and second polarizing film to be polarized direction vertical.
Further, first polarizing film and the second polarizing film, by adsorbing the PVA film system with dichroism substance
At.
Display provided by the invention is additionally arranged photosensitive film between the first polarizing film and Liquid Crystal Module, by touch function
It is blended with display device structure, directly realizes touch function in display is made, the secondary installing for reducing touch panel is made
At product cost increase.The special construction for the photosensitive film added does not interfere with the display parameters of display not only, while can also
Enough effectively improve the environment resistant light interference performance of display.
Description of the drawings
Fig. 1 is the structural schematic diagram of display provided by the invention；
Fig. 2 is the reticular structure schematic diagram of the photosensitive film of the present invention；
Fig. 3 is the fundamental diagram of the photosensitive film of the present invention；
Fig. 4 is the spectrum character diagram of the photosensitive film of the present invention
1. backlight module, 2. first polarizing films, 3. photosensitive films, 4. Liquid Crystal Modules, 5. colored filters, 6. second polarizations
Piece, 7. blue-ray LEDs, 8. light guide plates.
Specific implementation mode
Present invention problem, technical solution and advantage are illustrated by reference to exemplary embodiment.However, the present invention is not
It is limited to exemplary embodiment as disclosed below, it can be realized by different form.
Attached drawing 1 is the structural schematic diagram of display provided by the invention, in the following, the side of the present invention is discussed in detail according to Fig. 1
Case.
A kind of display, as shown in Figure 1, including backlight module 1 and Liquid Crystal Module 4, the first polarizing film 2 is located at backlight module
Between 1 and Liquid Crystal Module 4, the second polarizing film 6 is located at the outside of Liquid Crystal Module 4, and colored filter 5 is located at Liquid Crystal Module 4 and
Between two polarizing films 6, and photosensitive film 3 is additionally arranged between Liquid Crystal Module 4 and the first polarizing film 2.
Backlight module 1 therein is a side-light type backing structure, and light guide plate 8 therein is will using the method for ejection formation
Propylene is pressed into the smooth plate in surface, then with having high reflection and the not material of extinction, in the bottom surface halftone of light guide plate 8
The mode of printing stamps diffusion point.The light source of backlight module 1, LED light bar are located at 8 side of light guide plate, and the light sent out is led through reflection
Enter the inside of light guide plate 8 and form internal reflection to propagate, when light is mapped to diffusion point, the suppressed destruction of internal reflection, reflected light can be to each
Then angular spread beats via the front injection of light guide plate 8 and generates polarised light on the first polarizing film 2.The polarised light most Zhongdao
Up to the second polarizing film 6, the first polarizing film 2 and the second polarizing film 6 are PVA film system of the absorption with dichroic substance
At, and the first polarizing film 2 and the second polarizing film 6 have vertical polarization direction, thus be not powered in Liquid Crystal Module 4,
Display equipment is in black picture.
Liquid Crystal Module 4 therein is placed between two panels electro-conductive glass photosensitive film 3 and colored filter 5, between two plate electrodes
The driving that voltage of electric field changes, causes the field effect of twisted liquid crystal molecules nematic, controls the rotation direction of liquid crystal molecule, in turn
Reach the function whether polarized light source outgoing of control backlight module 1, generates light and shade variation to show image, then add
The upper colored filter 5, so as to show coloured image.
Photosensitive film 3 in this programme can realize the light in particular range of wavelengths the touch recognition of higher sensitivity.Together
When, which is the photosensitive film 3 of single side sensitivity, i.e., sensitivity when photosensitive film 3 only has positive light irradiation, back of the membrane is illuminated by the light
It penetrates and does not generate electric signal, the purpose designed in this way is to ensure backlight signal by not will produce electric signal when photosensitive film 3.Including by
Smooth surface and shady face, the irradiation of light-receiving surface light generate electric signal, and the irradiation of shady face light does not generate electric signal；Light-receiving surface is close to liquid
The side of crystal module 4.The electrode of photosensitive film 3 is arranged for latitude and longitude, and is evenly arranged in the PVA film of entire first polarizing film 2
On substrate, to reduce the interference to back light, to not influence display brightness.
When there is no light, the light-sensitive material for being in reverse bias condition is stop working state, at this moment only a small number of loads
Stream forms small reverse current, i.e. dark current under the action of reverse biased.Under light source irradiation, photon is in semiconductor
It is absorbed so that the electron amount of the p type island region of photosensitive film 3 increases, and also increases the hole of N-type region, generates new free current-carrying
Son.These carriers under the action of tying electric field, to p type island region move by hole, and electronics is moved to N-type region, to make the anti-of PN junction
It is greatly increased to electric current, it is in the conduction state to form photoelectric current.
When the intensity of incident light changes, how much generations of photo-generated carrier change accordingly, the electric current of generation
Change therewith, optical signal is thus converted to electric signal, realizes the touch control of indicator screen.
One embodiment of the present invention, preferably photosensitive film 3, be backlight can by two-dimensional optical mesh structure,
As shown in Fig. 2, each node of reticular structure is touch coordinate, node therein can be triangle point, square dot or other
The point of various shapes, preferably dot in this programme.Photosensitive film 3 is designed as reticular structure or sieve texture, it is therefore an objective to ensure
Backlight can not interfere with the brightness of display by photosensitive film 3 without reduce brightness.Meanwhile two-dimensional plane reticular knot
Structure is corresponding with specific X-coordinate and Y coordinate, so as to directly position the touch coordinate of finger, improves and touches precision.
Photosensitive film 3 in this programme touches precision minimum 4096 × 4096.
One embodiment of the present invention, according to the difference of the use environment of display, the sensitive optical source wavelength of photosensitive film 3
Range is different, in the present solution, according to the conventional use environment of display, the sensitive light source of the preferably photosensitive film 3 is wave-length coverage
The blue light source of 400nm to 470nm.
Backlight module 1 therein is a side-light type backing structure, and light emitting source is the blue light that wavelength is 400nm to 470nm
The surface of LED7, blue-ray LED 7 cover one layer of faint yellow fluorescent powder.Blue-ray LED 7 sends out high energy shortwave blue light, through faint yellow fluorescence
After coating, the wider light based on yellow of spectrum is converted to.The yellow light stimulates feux rouges and green light receptor in human eye, remixes
The blue light of LED itself, to make light seem white.
When the surface of finger touch display, back light part optical signals are reflected by touch finger.Because of this part
The light of reflection is short wavelength's 400nm~470nm blue lights of high energy, such as above, when the blue light illumination photosensitive film 3 that this part is reflected
When photosensitive film 3 can be caused because carrier is mobile and in the conduction state, generate photo-signal, pass through and detect photo-signal
Variation, and its corresponding reticular structure location information is inquired, to realize that opponent refers to the positioning of touch.Because of selenium photosensitive film 3
The spectral characteristic of narrower range with 400nm~470nm wavelength, thus can effectively shield most of wavelength in natural light
Optical signal, to improve the anti-light interference characteristic of touch display unit.
One embodiment of the present invention, the different materials that photosensitive film 3 therein can use be made different materials at
Point photosensitive film 3, can be wavelength be 0.52um cadmium sulfide, the vulcanized lead of 2um, the indium antimonide of 3~5um, 0.4~1.2um
Silicon etc., when photosensitive film 3 is selenium photosensitive film 3, the dot that touch precision that the selenium photosensitive film 3 is arranged is 4096 × 4096 is netted
The maximum gauge of structure, each dot is 0.1mm.
The preparation of selenium photosensitive film 3 can be made according to existing common process, first be sprayed on PVA film substrate
Layer of transparent conductive coating, then carry and apply selenium (p-type) on the clear coat, then with the technique of sputtering, the formation one and half on selenium layer
Transparent cadmium oxide (N-type) finally sprays low fusion gold between PN junction and is used as electrode.Its theory structure schematic diagram is as shown in Figure 3.
When there is no light, the light-sensitive material in reverse bias condition is operated in cut-off state, at this moment only a small number of loads
Stream forms small reverse current, i.e. dark current under the action of reverse biased.Under blue light illumination, photon is in semiconductor
Absorbed so that the electron amount of selenium material (p type island region) increases, and also increases the hole of cadmium material (N-type region), generate it is new from
By carrier.These carriers under the action of tying electric field, to p type island region move by hole, and electronics is moved to N-type region, to make PN
The reverse current of knot greatly increases, i.e., cadmium material layer has negative electrical charge, and selenium material layer has positive charge, to form photoelectric current,
It is in the conduction state.
It is illustrated in figure 4 the spectral characteristic of selenium photosensitive film 3.As can be seen that the selenium photosensitive film 3 is to 400nm to 470nm wavelength
The sensitive to blue light of range, thus can realize the touch recognition function of higher sensitivity.
More than, although the description of several embodiments of the invention, but these embodiments are intended only as example proposition
, it is not intended to limit the scope of the present invention.For these new embodiments, can be implemented with various other ways,
In the range of not departing from the gist of the invention, various omissions, displacement and change can be carried out.These embodiments and its change
Shape while being contained in scope and spirit of the present invention, is also contained in invention described in claim and its impartial model
In enclosing.
Claims (10)
1. a kind of display, which is characterized in that including backlight module and Liquid Crystal Module,
The first polarizing film is equipped between the backlight module and Liquid Crystal Module, the outside of the Liquid Crystal Module is equipped with the second polarization
Piece；Colored filter is equipped between the Liquid Crystal Module and second polarizing film；The Liquid Crystal Module and first polarization
Photosensitive film is equipped between piece；
The photosensitive film, including light-receiving surface and shady face, the light-receiving surface light irradiation generate electric signal, the shady face light
Irradiation does not generate electric signal；The light-receiving surface is close to the side of the Liquid Crystal Module.
2. display according to claim 1, which is characterized in that
The photosensitive film, be backlight can by two-dimensional optical mesh structure, each node of the reticular structure is tactile
Touch coordinate.
3. display according to claim 2, which is characterized in that
The photosensitive film, node are the dot reticular structure of dot.
4. display according to claim 2, which is characterized in that
The photosensitive film, it is 4096 × 4096 to touch precision.
5. display according to claim 1 or 2, which is characterized in that
The photosensitive film, sensitive light source include the blue light source of wave-length coverage 400nm to 470nm；
The blue light source, surface are wider coated with can the high energy shortwave blue light that blue light source is sent out be converted to spectrum
The faint yellow fluorescent coating of light based on yellow.
6. display according to claim 1 or 2, which is characterized in that
The photosensitive film is selenium photosensitive film.
7. display according to claim 6, which is characterized in that
The selenium photosensitive film, touches the dot reticular structure that precision is 4096 × 4096, and the maximum gauge of each dot is
0.1mm。
8. display according to claim 6, which is characterized in that
The electrode of the selenium photosensitive film is evenly arranged according to longitude and latitude cable architecture on the film substrate of first polarizing film.
9. display according to claim 1, which is characterized in that
First polarizing film and second polarizing film to be polarized direction vertical.
10. display according to claim 1, which is characterized in that
First polarizing film and the second polarizing film are made by adsorbing the PVA film with dichroism substance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810365437.3A CN108415187A (en) | 2018-04-23 | 2018-04-23 | A kind of display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810365437.3A CN108415187A (en) | 2018-04-23 | 2018-04-23 | A kind of display |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108415187A true CN108415187A (en) | 2018-08-17 |
Family
ID=63136173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810365437.3A Pending CN108415187A (en) | 2018-04-23 | 2018-04-23 | A kind of display |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108415187A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110265442A (en) * | 2019-06-14 | 2019-09-20 | 京东方科技集团股份有限公司 | Display base plate and display panel comprising it |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103210350A (en) * | 2011-10-03 | 2013-07-17 | 日立化成株式会社 | Method for forming conductive pattern, conductive pattern substrate, and touch panel sensor |
| CN104156130A (en) * | 2014-07-17 | 2014-11-19 | 重庆京东方光电科技有限公司 | Touch screen and display device |
| CN105988239A (en) * | 2015-02-28 | 2016-10-05 | 联想(北京)有限公司 | Liquid crystal display device integrated with touch function and making method |
| CN208044249U (en) * | 2018-04-23 | 2018-11-02 | 成都睿联创想科技有限责任公司 | A kind of display |
-
2018
- 2018-04-23 CN CN201810365437.3A patent/CN108415187A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103210350A (en) * | 2011-10-03 | 2013-07-17 | 日立化成株式会社 | Method for forming conductive pattern, conductive pattern substrate, and touch panel sensor |
| CN104156130A (en) * | 2014-07-17 | 2014-11-19 | 重庆京东方光电科技有限公司 | Touch screen and display device |
| CN105988239A (en) * | 2015-02-28 | 2016-10-05 | 联想(北京)有限公司 | Liquid crystal display device integrated with touch function and making method |
| CN208044249U (en) * | 2018-04-23 | 2018-11-02 | 成都睿联创想科技有限责任公司 | A kind of display |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110265442A (en) * | 2019-06-14 | 2019-09-20 | 京东方科技集团股份有限公司 | Display base plate and display panel comprising it |
| CN110265442B (en) * | 2019-06-14 | 2021-04-02 | 京东方科技集团股份有限公司 | Display substrate and display panel comprising same |
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