CN109710114A - Photosensitive touch screen and hand-held intelligent terminal - Google Patents
Photosensitive touch screen and hand-held intelligent terminal Download PDFInfo
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- CN109710114A CN109710114A CN201811636136.6A CN201811636136A CN109710114A CN 109710114 A CN109710114 A CN 109710114A CN 201811636136 A CN201811636136 A CN 201811636136A CN 109710114 A CN109710114 A CN 109710114A
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Abstract
The invention discloses a kind of photosensitive touch screen and hand-held intelligent terminal, photosensitive touch screen includes pixel array and processor, and pixel array includes several according to regularly arranged pixel unit, and each pixel unit includes display unit and at least one photodiode；Photosensitive touch screen further includes analogy signal processing unit and A/D converter；Analogy signal processing unit is for handling the electric signal that each photodiode generates and exporting the first signal corresponding with electric signal to A/D converter；A/D converter is used to export corresponding second signal to processor after carrying out analog-to-digital conversion to the first signal；Processor controls the display unit in corresponding pixel unit according to each second signal to realize the adjusting to photosensitive touch screen light and shade.The present invention by the way that by photodiode and display unit, together according to being ordered on screen, light can also be received while shining by realizing, by screen become one can two-way operation device, can be realized comprehensive screen truly.
Description
Technical field
The invention belongs to touch screen field, in particular to a kind of photosensitive touch screen and hand-held intelligent terminal.
Background technique
Mobile phone screen, computer screen etc. at present, either traditional LED (light emitting diode), TFT-LCD (film crystal
Pipe liquid crystal display), or a new generation OLED (Organic Light Emitting Diode), the Micro LED (photophore of display technology of new generation
Part), these devices are luminescent devices, by converting electrical energy into luminous energy, with three kinds of basic tones, by ordering rule arrangement and
Light and shade is adjusted to show various colors.And the hand-held intelligent terminals such as current mobile phone, it is photosensitive, it is by photosensitive mould group
It is realized with camera.Photosensitive element in photosensitive mould group receives light, adjusts screen with environmental light intensity mainly for realizing
Shading value；Photosensitive element in camera receives light, achievees the purpose that take pictures after a series of processing.
The screen of hand-held intelligent terminal can't receive light as maximum luminaire at present, belong to either simplex equipment.
Since screen can only shine, light cannot be received, so even if also must rely on it to meet the adjusting of the light and shade of screen itself
His photosensitive element, namely need to complete by photosensitive mould group etc..Existing mobile phone receives the relevant function of light to realize, no
Obtaining will not include that the front panel of mobile phone is arranged in photosensitive mould group and camera etc. of photosensitive element, this will certainly occupy mobile phone screen
Segment space, lead to not realize comprehensive screen truly.
Summary of the invention
The technical problem to be solved by the present invention is in order to overcome the screen itself of hand-held intelligent terminal in the prior art cannot
Receive light, it is necessary to the function of receiving light is realized by means of other photosensitive elements, so that hand-held intelligent terminal cannot achieve very
The defect of positive meaning shielded comprehensively, provide it is a kind of can shine can also receive light can two-way operation photosensitive touch screen and hand
Hold intelligent terminal.
The present invention is to solve above-mentioned technical problem by following technical proposals:
The present invention provides a kind of photosensitive touch screen, including pixel array and processor, the pixel array includes several
According to regularly arranged pixel unit, each pixel unit includes display unit；
Each pixel unit further includes at least one photodiode；
The photosensitive touch screen further includes analogy signal processing unit and A/D (analog/digital) converter；
The analogy signal processing unit is used to carry out the electric signal that each photodiode generates processing and defeated
The first signal corresponding with the electric signal is to the A/D converter out；
The A/D converter is used to export corresponding second signal to described after carrying out analog-to-digital conversion to first signal
Processor；
The processor controls the display unit in the corresponding pixel unit according to each second signal
To realize the adjusting to the photosensitive touch screen light and shade.
Preferably, the photosensitive touch screen includes display pattern and photographing mode；
When the photosensitive touch screen is in the display pattern, the processor is controlled according to each second signal
The display unit in the corresponding pixel unit is to realize the adjusting to the photosensitive touch screen light and shade；
The photoelectricity two in the pixel unit when the photosensitive touch screen is in the photographing mode, in every row
The electric signal that pole pipe generates forms picture signal and is successively transferred to the analog signal by the signal bus of respective column
Processing unit and the A/D converter, each of generated after converted second signal composition data image signal export to
The processor；The processor controls the display list in the corresponding pixel unit according to the data image signal
Member is shown to realize the function of taking pictures.
Preferably, each pixel unit further includes switch unit, when the photosensitive touch screen is in the mould of taking pictures
When formula, the switch unit is used to control the photodiode and display unit hair in the pixel unit at place
Light out is isolated.
Preferably, the switch unit is that the high speed being set between the display unit and the photodiode is opened
It closes, the switching frequency of the high-speed switch is greater than the frequency that human eye can perceive.
Preferably, the switch unit is the baffle being set between the display unit and the photodiode, institute
Baffle is stated for the light that the photodiode is issued with the display unit to be isolated.
Preferably, the photosensitive touch screen further includes that the first row selects logic circuit, the first column selection logic circuit and when first
Sequence and logic control circuit；
The processor is also used to control first timing and logic control circuit makes first timing and logic
It is corresponding in the pixel array that control circuit drives the first row that logic circuit and the first column selection logic circuit is selected to gate
The photodiode in row and column；
The photosensitive touch screen further includes that the second row selects logic circuit, the second column selection logic circuit and the second timing and logic
Control circuit；
The processor is also used to control second timing and logic control circuit makes second timing and logic
It is corresponding in the pixel array that control circuit drives second row that logic circuit and the second column selection logic circuit is selected to gate
The display unit in row and column.
Preferably, the first row selects logic circuit for gating corresponding row in the pixel array, the first row
Selecting logic circuit includes progressive scanning mode and interlaced scan mode.
Preferably, each pixel unit further includes resetting MOS (metal-oxide semiconductor fieldeffect transistor)
Pipe, the resetting metal-oxide-semiconductor are used to reset the photodiode in the pixel unit at place.
Preferably, the analogy signal processing unit for being amplified to the electric signal that the photodiode generates and
Signal-to-noise ratio is improved to handle and export first signal corresponding with the electric signal to the A/D converter.
The present invention also provides a kind of hand-held intelligent terminal, including front panel and earpiece, the hand-held intelligent terminal is also wrapped
Include photosensitive touch screen above-mentioned, the photosensitive touch screen is set to the front panel, the earpiece be set to the front panel it
Outer region.
The positive effect of the present invention is that: photosensitive touch screen and hand-held intelligent terminal provided by the invention pass through light
Electric diode and display unit are together according to being ordered on screen, and light can also be received while shining by realizing, by screen
Become one can two-way operation device.Photosensitive touch screen including photodiode not only adjustable screen shading value, but also can
To realize the camera function of original camera.The present invention will be set to originally the camera on the front panel of hand-held intelligent terminal and
Sensor devices are realized by screen, enable to the front panel of hand-held intelligent terminal there was only screen, so as to realize real meaning
Comprehensive screen in justice.
Detailed description of the invention
Fig. 1 is the module diagram of the photosensitive touch screen of the embodiment of the present invention 1.
Fig. 2 is the partial schematic diagram of pixel array in Fig. 1.
Fig. 3 is the schematic diagram of the driving circuit of an independent light emitting diode in embodiment 1.
Fig. 4 is the schematic diagram of the relevant driving circuit of an independent photodiode in embodiment 1.
Fig. 5 is the schematic diagram of light emitting diode interlock circuit in a kind of conventional light emitting module used in embodiment 1.
Fig. 6 is the schematic diagram of photodiode interlock circuit in a kind of illuminant module used in embodiment 1.
Specific embodiment
The present invention is further illustrated below by the mode of embodiment, but does not therefore limit the present invention to the reality
It applies among a range.
Embodiment 1
A kind of photosensitive touch screen is present embodiments provided, as shown in Figure 1, the photosensitive touch screen includes pixel array 1, processing
Device 2, the first row select logic circuit 3, the first column selection logic circuit 4, the first timing and logic control circuit 5, the second row to select logic
Circuit 7, the second column selection logic circuit 6, the second timing and logic control circuit 8, analogy signal processing unit 9 and A/D converter
10.Processor 2 uses MCU chip in the present embodiment.
The partial schematic diagram of pixel array 1 is as shown in Fig. 2, pixel array 1 includes several according to rule row in the present embodiment
The pixel unit 101 of column illustrates only four pixel units 101 in Fig. 2.Each pixel unit 101 include display unit 102,
At least one photodiode 103, switch unit (not shown) and resetting metal-oxide-semiconductor (not shown).In the present embodiment
Each pixel unit 101 uses a light emitting diode 4.In the present embodiment, display unit 102 includes being shone by what is glowed
Diode 104, the light emitting diode 105 of green light, blue light-emitting light emitting diode 106, what these were drivingly connected as shown in Figure 3
The three-color light-emitting diode that light emitting diode is constituted issues three kinds of Essential colour of red, green, blue.Fig. 4 shows resetting metal-oxide-semiconductor RES
It is placed between power vd D and light emitting diode, the photodiode 103 in pixel unit 101 where being used to reset.Fig. 4
Middle VSS indicates ground, and metal-oxide-semiconductor RS is row gating metal-oxide-semiconductor, another metal-oxide-semiconductor is the source level follower metal-oxide-semiconductor for driving.
In the present embodiment, the electric signal that analogy signal processing unit 9 is used to generate each photodiode 103 is put
Big and raising signal-to-noise ratio handles and exports the first signal corresponding with the electric signal to A/D converter 10.A/D converter 10 is used
Corresponding second signal is exported to processor 2 after carrying out analog-to-digital conversion to first signal.The signal that processor 2 has been handled
Corresponding row or column is controlled with logic control circuit using the second timing selects logic circuit to drive corresponding light emitting diode.
In the present embodiment, photosensitive touch screen includes both of which, respectively display pattern and photographing mode.
When photosensitive touch screen is in display pattern, processor 2 controls corresponding pixel according to each second signal
Display unit 102 in unit 101 is to realize the adjusting to photosensitive touch screen light and shade.
When photosensitive touch screen is in photographing mode, what the photodiode 103 in the pixel unit 101 in every row generated
Electric signal composition picture signal is simultaneously successively transferred to analogy signal processing unit 9 and A/D by the signal bus of respective column
Converter 10, each of converted rear generation second signal composition data image signal are exported to processor 2.Processor 2
Display unit 102 in corresponding pixel unit 101 is controlled according to the data image signal to be shown to realize and take pictures
Function.
In the present embodiment, when photosensitive touch screen is in photographing mode, switch unit is used to control the pixel unit at place
The light that photodiode 103 in 101 is issued with display unit 102 is isolated.Switch unit is for realizing display unit 102
It is not collected by the photodiode 103 in pixel unit 101 when luminous, avoids causing maloperation.Wherein, the reality of switch unit
There are many existing modes, and a kind of implementation is baffle, at this time baffle plate setting between display unit 102 and photodiode 103,
Work at the same time the two can；Another implementation of switch unit is high-speed switch, which is set to display
Between unit 102 and the photodiode 103, the switching frequency of the high-speed switch is greater than the frequency that human eye can perceive.This
Switch unit is realized using high-speed switch in embodiment.
In the present embodiment, processor 2 is also used to control the first timing and logic control circuit 5 so that the first timing with patrol
Volume control circuit 5 drives the first row that logic circuit 3 and the first column selection logic circuit 4 is selected to gate in pixel array 1 and corresponds to row and column
In photodiode 103.Wherein, it includes the row gating metal-oxide-semiconductor RS in Fig. 4 that the first row, which selects logic circuit 3, is used to gate picture
Corresponding one-row pixels unit in pixel array 1, it includes two kinds of scan patterns that the first row, which selects logic circuit 3: respectively being progressively scanned
Mode and interlaced scan mode, may be implemented can also interlacing scan to pixel array progressive scan.
In the present embodiment, processor 2 is also used to control the second timing and logic control circuit 8 makes the second timing and logic
Control circuit 8 drives the second row that logic circuit 7 and the second column selection logic circuit 6 is selected to gate and corresponds in row and column in pixel array 1
Display unit 102.
The present embodiment by by photodiode and the display unit being made of light emitting diode together according to regularly arranged
In on screen, light can also be received by realizing while shining, and when specific implementation includes but is not limited only to following main functional modules:
If Fig. 5 shows a kind of conventional light emitting module, mainly it is made of light emitting diode matrix, is made up of constant-current source
Power supply module give screen light emitting diode power supply, make three-color light-emitting diode issue three kinds of Essential colour of red, green, blue, will be electric
It can be converted into luminous energy, achieve the purpose that display.Only illustrated three rows three column of Fig. 5, respectively row 1, row 2 and row 3, column A, column
B and column C, specific implementation is the prior art, and details are not described herein.
As Fig. 6 is shown based on a kind of illuminant module of the invention, including several photodiodes.Work as ambient light
When being irradiated to the pixel unit being made of photodiode, photoelectric effect occurs, corresponding charge is generated in pixel unit.The
A line selection logic circuit gates the pixel unit of certain corresponding a line, abbreviation row pixel unit as needed.Row pixel unit
Interior picture signal is transferred to corresponding analogy signal processing unit and A/D converter by the signal bus of respective column,
It is converted into data image signal output.
The current display technology and shooting technology of photosensitive touch screen set provided in this embodiment is in one, in screen
Pixel array improved, display unit 102 and photodiode 103 are fused into novel photosensitive touch screen.It needs
Illustrate, in the present embodiment unmentioned display and take pictures it is used to other modules have the realization side of comparative maturity
Case, details are not described herein.
Photosensitive touch screen provided in this embodiment, which solves screen itself in the prior art, cannot receive light, it is necessary to by
In other photosensitive elements realize receive light function the problem of.The present invention it is existing include the pixel unit of display unit
Middle addition photodiode, light is received instead of other photosensitive elements, and light is irradiated to two pole of photoelectricity in pixel unit
Photodiode converts light into as electric signal when pipe, and electric signal inputs analogy signal processing unit, the analog signal handled into
Enter A/D converter and be converted to digital signal, digital signal is sent again to processor, and processor is according to the feelings of the digital signal received
Condition can know the light conditions of screen, realize the light emitting control to the display unit in pixel unit according to the light conditions,
To realize adjusting to screen light and shade, thus by screen become the light that can either shine and can receive can two-way work
The device of work.
Photosensitive touch screen provided in this embodiment also solves existing screen to realize that camera function is necessarily dependent upon
The camera being set on screen front plate receives light, achievees the purpose that take pictures by a series of processing, the presence of camera
So that hand-held intelligent terminal cannot achieve the problem of comprehensive screen of real meaning.The present invention it is existing include display unit
Photodiode is added in pixel unit, receives light instead of existing camera.When being in photographing mode, processor
The picture signal that the electric signal composition that photodiode generates in every one-row pixels unit can be obtained, through analog signal processing list
Member and A/D converter, which first post-process, to be sent afterwards to processor, and processor can drive display single according to the data image signal received
Member is shown on demand, so that the function of taking pictures is realized, so that the front panel of hand-held intelligent terminal no longer needs camera, from
And realize comprehensive screen of real meaning.
Embodiment 2
The present embodiment additionally provides a kind of hand-held intelligent terminal, including front panel, earpiece and photosensitive touching described in embodiment 1
Screen is touched, the photosensitive touch screen is set to the front panel, and the earpiece is set to the region except the front panel.
Hand-held intelligent terminal provided in this embodiment such as browses mobile phone, sees video when only needing screen display function
Deng screen normal luminous；When entering photographing mode, the light emitting module that is made of light emitting diode with by photodiode
The frequency that human eye can perceive can be greater than by the switch control that switches at high speed, switching frequency between the illuminant module of realization.
Hand-held intelligent terminal provided in this embodiment is realized using photosensitive touch screen described in embodiment 1, uses luminous two
Pole pipe is substituted for adjusting the photosensitive element of screen light on and off in existing hand-held intelligent terminal, and earpiece is placed in front panel on front panel
Except region, such as be placed in the top of hand-held intelligent terminal.The function that camera is realized in existing hand-held intelligent terminal,
The image received is reached by inter-process by photodiode in the present embodiment, front panel will can't see camera and other
Module, only screen realize comprehensive screen truly.
A kind of solution for not needing that earpiece and camera are arranged on the front panel is present embodiments provided, is realized true
Comprehensive screen of positive meaning.
Although specific embodiments of the present invention have been described above, it will be appreciated by those of skill in the art that this is only
For example, protection scope of the present invention is to be defined by the appended claims.Those skilled in the art without departing substantially from
Under the premise of the principle and substance of the present invention, many changes and modifications may be made, but these change and
Modification each falls within protection scope of the present invention.
Claims (10)
1. a kind of photosensitive touch screen, including pixel array and processor, the pixel array include several according to regularly arranged
Pixel unit, each pixel unit includes display unit；
It is characterized in that,
Each pixel unit further includes at least one photodiode；
The photosensitive touch screen further includes analogy signal processing unit and A/D converter；
The analogy signal processing unit be used to handle the electric signal that each photodiode generates and export with
Corresponding first signal of the electric signal is to the A/D converter；
The A/D converter is used to export corresponding second signal to the processing after carrying out analog-to-digital conversion to first signal
Device；
The processor controls the display unit in the corresponding pixel unit according to each second signal with reality
Now to the adjusting of the photosensitive touch screen light and shade.
2. photosensitive touch screen as described in claim 1, which is characterized in that the photosensitive touch screen includes display pattern and takes pictures
Mode；
When the photosensitive touch screen is in the display pattern, the processor is corresponded to according to each second signal control
The pixel unit in the display unit to realize the adjusting to the photosensitive touch screen light and shade；
The photodiode in the pixel unit when the photosensitive touch screen is in the photographing mode, in every row
The electric signal composition picture signal of generation is simultaneously successively transferred to the analog signal processing by the signal bus of respective column
Unit and the A/D converter, each of converted rear generation second signal composition data image signal are exported to described
Processor；The processor according to the data image signal control the display unit in the corresponding pixel unit into
Row display is to realize the function of taking pictures.
3. photosensitive touch screen as claimed in claim 2, which is characterized in that each pixel unit further includes switch unit,
When the photosensitive touch screen is in the photographing mode, the switch unit is used to control in the pixel unit at place
The light that the photodiode is issued with the display unit is isolated.
4. photosensitive touch screen as claimed in claim 3, which is characterized in that the switch unit is to be set to the display unit
High-speed switch between the photodiode, the switching frequency of the high-speed switch are greater than the frequency that human eye can perceive.
5. photosensitive touch screen as claimed in claim 3, which is characterized in that the switch unit is to be set to the display unit
Baffle between the photodiode, the baffle are used for the light for issuing the photodiode and the display unit
Line is isolated.
6. photosensitive touch screen as described in claim 1, which is characterized in that the photosensitive touch screen further includes that the first row selects logic
Circuit, the first column selection logic circuit and the first timing and logic control circuit；
The processor is also used to control first timing and logic control circuit makes first timing and logic control
The first row described in circuit drives select logic circuit and the first column selection logic circuit gate correspond in the pixel array row with
The photodiode in column；
The photosensitive touch screen further includes that the second row selects logic circuit, the second column selection logic circuit and the second timing and logic control
Circuit；
The processor is also used to control second timing and logic control circuit makes second timing and logic control
Second row described in circuit drives select logic circuit and the second column selection logic circuit gate correspond in the pixel array row with
The display unit in column.
7. photosensitive touch screen as claimed in claim 6, which is characterized in that the first row selects logic circuit described for gating
Corresponding row in pixel array, it includes progressive scanning mode and interlaced scan mode that the first row, which selects logic circuit,.
8. photosensitive touch screen as described in claim 1, which is characterized in that each pixel unit further includes resetting metal-oxide-semiconductor,
The resetting metal-oxide-semiconductor is used to reset the photodiode in the pixel unit at place.
9. photosensitive touch screen as described in claim 1, which is characterized in that the analogy signal processing unit is used for the light
The electric signal that electric diode generates amplifies and improves signal-to-noise ratio and handles and export corresponding with the electric signal described first
Signal is to the A/D converter.
10. a kind of hand-held intelligent terminal, including front panel and earpiece, which is characterized in that the hand-held intelligent terminal further includes power
Benefit requires 1 to 9 described in any item photosensitive touch screens, and the photosensitive touch screen is set to the front panel, the earpiece setting
Region except the front panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201811636136.6A CN109710114A (en) | 2018-12-29 | 2018-12-29 | Photosensitive touch screen and hand-held intelligent terminal |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811636136.6A CN109710114A (en) | 2018-12-29 | 2018-12-29 | Photosensitive touch screen and hand-held intelligent terminal |
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| CN201811636136.6A Pending CN109710114A (en) | 2018-12-29 | 2018-12-29 | Photosensitive touch screen and hand-held intelligent terminal |
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| CN113157146A (en) * | 2021-04-19 | 2021-07-23 | 深圳市华星光电半导体显示技术有限公司 | Display panel and photosensitive display device |
| CN113157145A (en) * | 2021-04-19 | 2021-07-23 | 深圳市华星光电半导体显示技术有限公司 | Display panel and photosensitive display device |
| WO2022089161A1 (en) * | 2020-11-02 | 2022-05-05 | 达闼机器人有限公司 | Collection and display apparatus, and terminal |
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Address after: Building 1, No. 399 Keyuan Road, Zhangjiang hi tech park, Pudong New Area, Shanghai, 201203 Applicant after: Huaqin Technology Co.,Ltd. Address before: Building 1, No. 399 Keyuan Road, Zhangjiang hi tech park, Pudong New Area, Shanghai, 201203 Applicant before: Huaqin Technology Co.,Ltd. Address after: Building 1, No. 399 Keyuan Road, Zhangjiang hi tech park, Pudong New Area, Shanghai, 201203 Applicant after: Huaqin Technology Co.,Ltd. Address before: 201203 Building 1, 399 Zhangyuan Road, Zhangjiang, Pudong New Area, Shanghai Applicant before: HUAQIN TELECOM TECHNOLOGY Co.,Ltd. |
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