CN108169941A - LCD window and its control method with an automatic light meter - Google Patents
LCD window and its control method with an automatic light meter Download PDFInfo
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- CN108169941A CN108169941A CN201810049105.4A CN201810049105A CN108169941A CN 108169941 A CN108169941 A CN 108169941A CN 201810049105 A CN201810049105 A CN 201810049105A CN 108169941 A CN108169941 A CN 108169941A
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- 238000000034 method Methods 0.000 title claims abstract description 25
- 239000000758 substrate Substances 0.000 claims abstract description 61
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 55
- 239000011521 glass Substances 0.000 claims abstract description 51
- 238000001514 detection method Methods 0.000 claims description 9
- 238000005070 sampling Methods 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims description 5
- 238000002834 transmittance Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 6
- 238000004590 computer program Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000005693 optoelectronics Effects 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000004993 liquid crystal window Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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
- G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal cells
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
- E06B9/24—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
- E06B9/24—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds
- E06B2009/2417—Light path control; means to control reflection
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
- E06B9/24—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds
- E06B2009/2464—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds featuring transparency control by applying voltage, e.g. LCD, electrochromic panels
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/24—Structural elements or technologies for improving thermal insulation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B80/00—Architectural or constructional elements improving the thermal performance of buildings
Abstract
The invention discloses a kind of LCD window and its control method with an automatic light meter, the LCD window includes：First and second glass substrate that is oppositely arranged, the liquid crystal layer being set between two substrates, the common electrode layer between the pixel electrode layer, the liquid crystal layer and the second substrate that are set between the liquid crystal layer and the first substrate and the circuit such as lower unit：Light sensor unit for detecting ambient light light intensity, exports relevant voltage；Control unit for the voltage exported according to the light sensor unit, exports corresponding control voltage；Pixel voltage provides unit, according to the control voltage that described control unit exports, corresponding pixel voltage is exported to the pixel electrode layer, so as to form corresponding voltage difference between the common electrode layer and the pixel electrode layer.It can be according to ambient light adjust automatically light transmittance using the present invention so that LCD window intelligence higher.
Description
Technical field
The present invention relates to liquid crystal technology fields, particularly relate to a kind of LCD window and its control method with an automatic light meter.
Background technology
Liquid crystal light modulation film (or liquid crystal light modulation panel) is a kind of intelligent film, directly by film adhered in glass
On, just form our usually said electronics curtain, alternatively referred to as LCD window.LCD window utilizes the optical characteristics of liquid crystal, realizes
The photoelectric functional of film.In fact, after LCD window is powered, the voltage of loading can cause liquid crystal film (or liquid crystal display panel)
Be presented penetrates and opaque state, realizes the double requirements that people penetrate glass and protect privacy, this is other kinds at present
What class curtain can not all be realized.Moreover, LCD window has dielectric reflective effect to the thermal energy of light so that indoor cool in summer and warm in winter, tool
There is environmental protection and energy saving effect, product purpose is extensive.
LCD window obtains liking for people because light transmittance can be adjusted according to demand.But available liquid crystal window needs are borrowed
The equipment such as remote controler is helped to send signal control LCD window brightness, it is impossible to the brightness to people's demand is adjusted automatically according to ambient light,
People is made to have been among the working environment of a comfortable brightness, it is intelligent low.
Invention content
It in view of this, can basis it is an object of the invention to propose a kind of LCD window and its control method with an automatic light meter
Ambient light adjust automatically light transmittance so that LCD window intelligence higher.
A kind of LCD window is provided based on the above-mentioned purpose present invention, including：First and second glass substrate that is oppositely arranged, setting
Liquid crystal layer between two substrates, pixel electrode layer, the liquid crystal layer being set between the liquid crystal layer and the first substrate
Common electrode layer between the second substrate and the circuit such as lower unit：
Light sensor unit for detecting ambient light light intensity, exports relevant voltage；
Control unit for the voltage exported according to the light sensor unit, exports corresponding control voltage；
Pixel voltage provide unit, according to described control unit export control voltage, export corresponding pixel voltage to
The pixel electrode layer, so as to form corresponding voltage difference between the common electrode layer and the pixel electrode layer.
Preferably, the first glass substrate specifically includes liquid crystal region and circuit region, wherein, the liquid crystal of the first glass substrate
Region is opposite with the second glass substrate；And
The liquid crystal layer is specifically sandwiched between the liquid crystal region of the first glass substrate and the second glass substrate；
The circuit of the light sensor unit and pixel voltage offer unit is set to the circuit region of the first glass substrate.
Wherein, the light sensor unit specifically detects ambient light light intensity the output phase induced current using PIN photodiode,
Circuit is recycled to convert electrical current into relevant voltage output.
Wherein, the light sensor unit further includes：Transistor T1, T2, T3；
Wherein, the grid of one end of PIN and T2 connect, the bias voltage of other end access setting；The grid access of T1
Reset reset signals, one among the source electrode and drain electrode of T1 connect with the grid of T2, another access vdd voltage；The source of T2
An access vdd voltage among pole and drain electrode, another is connected to one among the source electrode and drain electrode of T3；The grid of T3 connects
Enter Gate gate-control signals, another among the source electrode and drain electrode of T3 is as output terminal and the voltage input end of described control unit
Connection.
Wherein, described control unit is specifically used for carrying out a controlling of sampling every the setting period；In a controlling of sampling
In the process, the useful signal of described control unit output Reset signals resets the light sensor unit, and then exports
The invalid signals of Reset signals and the useful signal of Gate signals；During the useful signal of the Gate signals, the control
Unit processed reads the voltage value of the light sensor unit output by voltage input end；Later, described control unit is according to reading
The voltage value taken provides unit output corresponding control voltage to the pixel voltage；
Described control unit also provides for the bias voltage.
The present invention also provides a kind of control method with an automatic light meter of LCD window, including：
Read the voltage that the light sensor unit of the LCD window is exported according to the ambient light light intensity of detection；
It provides unit output corresponding control voltage to the pixel voltage of the LCD window according to the voltage of reading, controls institute
Pixel voltage offer unit is provided and exports corresponding pixel voltage to pixel electrode layer, so that the pixel electricity in liquid crystal layer both sides
Corresponding voltage difference is formed between pole layer and common electrode layer；
Wherein, the pixel electrode layer, liquid crystal layer and common electrode layer are set in turn in what the LCD window was oppositely arranged
Between first and second glass substrate.
In the technical solution of the embodiment of the present invention, using two glass substrates being oppositely arranged, and set between two substrates
Liquid crystal layer；Ambient light light intensity is detected using light sensor unit, control unit is exported according to the light intensity that light sensor unit detects
Voltage, control pixel voltage provides unit and provides corresponding voltage to the common electrode layer and pixel electrode layer of liquid crystal layer both sides
Difference so that liquid crystal deflection can according to the ambient light light intensity of detection adjust automatically.In this way, when detecting that indoor light intensity is weaker
When, liquid crystal deflection can be controlled through brightness in more light enhanced room；Conversely, when detecting that indoor light intensity is stronger,
Liquid crystal deflection can be controlled to block penetrating for excessive light so that interior is maintained in the environment of a comfortable brightness.Due to room
The process of the adjustment of interior light intensity does not need to personnel's participation, substantially increases the intelligence of LCD window.
More preferably, in technical scheme of the present invention, pixel voltage is directly provided to the circuit of unit and light sensor unit
It is set on glass substrate, integrated level can be improved, reduce the connection installation of attachment and attachment of the LCD window outside glass substrate.
And a kind of circuit of light sensor unit provided by the invention contains only 3 transistors and an optoelectronic semiconductor, convenient in glass
It is made on substrate, structure is formed with the part for simplifying LCD window.
Description of the drawings
Fig. 1 a, 1b are the structure diagram of LCD window provided in an embodiment of the present invention；
Fig. 2 is a kind of light sensor element circuit schematic diagram provided in an embodiment of the present invention；
Fig. 3 is a kind of control method flow chart with an automatic light meter of LCD window provided in an embodiment of the present invention；
Fig. 4 is the voltage that reading light sensor unit provided in an embodiment of the present invention is exported according to the ambient light light intensity of detection
Specific method flow chart；
Fig. 5 is the signal timing diagram of light sensor element circuit provided in an embodiment of the present invention.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with specific embodiment, and reference
Attached drawing, the present invention is described in more detail.
The embodiment of the present invention is described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, and is only used for explaining the present invention, and is not construed as limiting the claims.
Those skilled in the art of the present technique are appreciated that unless expressly stated, singulative " one " used herein, " one
It is a ", " described " and "the" may also comprise plural form.It is to be further understood that when we claim element to be " connected " or " coupling
Connect " to another element when, it can be directly connected or coupled to other elements or there may also be intermediary elements.In addition, this
In " connection " or " coupling " that uses wireless connection or wireless coupling can be included.Wording "and/or" used herein includes one
The whole or any cell of a or more a associated list items and all combinations.
It should be noted that all statements for using " first " and " second " are for differentiation two in the embodiment of the present invention
The non-equal entity of a same names or non-equal parameter, it is seen that " first " " second " should not only for the convenience of statement
The restriction to the embodiment of the present invention is interpreted as, subsequent embodiment no longer illustrates this one by one.
Technical scheme of the present invention using two glass substrates being oppositely arranged, and sets liquid crystal layer between two substrates；Profit
Ambient light light intensity, the voltage that control unit is exported according to the light intensity that light sensor unit detects, control are detected with photosensitive sensing unit
Pixel voltage processed provides unit and provides corresponding voltage difference to the common electrode layer and pixel electrode layer of liquid crystal layer both sides so that liquid
Brilliant deflection can according to the ambient light light intensity of detection adjust automatically.In this way, when detecting that indoor light intensity is weaker, can control
Liquid crystal deflection processed is through brightness in more light enhanced room；Conversely, when detecting that indoor light intensity is stronger, liquid can be controlled
Penetrating for excessive light is blocked in crystalline substance deflection so that interior is maintained in the environment of a comfortable brightness.Due to indoor light intensity
Adjustment process do not need to personnel participation, substantially increase the intelligence of LCD window.
The technical solution for embodiment that the invention will now be described in detail with reference to the accompanying drawings.
LCD window provided in an embodiment of the present invention, as shown in Figure 1a, including：101 He of the first glass substrate being oppositely arranged
Second glass substrate 102, the liquid crystal layer 103 being set between two glass substrates are set to 103 and first glass substrate of liquid crystal layer
Common electrode layer 104 between pixel electrode layer 105,103 and second glass substrate 102 of liquid crystal layer between 101 and as follows
The circuit of unit：Light sensor unit 106, control unit 107, pixel voltage provide unit 108.
Wherein, light sensor unit 106 is used to detect ambient light light intensity, output and relevant voltage；Specifically, light sensor
Unit 106 can utilize PIN photodiode to detect ambient light light intensity the output phase induced current, and circuit is recycled to convert electrical current into
Relevant voltage exports；For example, relevant voltage output can be converted electrical current into using resistance.
Control unit 107 is used for the voltage exported according to light sensor unit 106, and it is defeated to provide unit 108 to pixel voltage
Go out corresponding control voltage.
Pixel voltage provides the control voltage that is exported according to control unit 107 of unit 108, export corresponding pixel voltage to
Pixel electrode layer 105, so as to form corresponding voltage between the common electrode layer of 103 both sides of liquid crystal layer and pixel electrode layer
Difference so that the corresponding angle of liquid crystal deflection.Pixel voltage offer unit 108 can be used existing well-known to those skilled in the art
Circuit does not repeat herein.
It can integrate and set preferably, the pixel voltage in said units circuit provides unit 108 and light sensor unit 106
It is placed on glass substrate, to reduce the connection of attachment and attachment of the LCD window outside glass substrate installation.
Specifically, as shown in Figure 1 b, the first glass substrate 101 can include liquid crystal region and circuit region.Wherein, first
The liquid crystal region of glass substrate 101 and the second glass substrate 102 are opposite, and the liquid crystal layer 103 is specifically sandwiched in the first glass substrate
Liquid crystal region and the second glass substrate between.The circuit that pixel voltage provides unit 108 and light sensor unit 106 is set to the
The circuit region of one glass substrate.
The circuit that unit is provided due to integrating pixel voltage on the glass substrate is well known to those skilled in the art, herein
It repeats no more.And it is provided by the invention a kind of convenient for being integrated in the circuit of the light sensor unit 106 on the first glass substrate, such as
Shown in Fig. 2, including：PIN photodiode and transistor T1, T2, T3；
Wherein, the grid of one end of PIN and T2 connect, the bias voltage of other end access setting；The grid access of T1
Reset signals (reset signal), one among the source electrode and drain electrode of T1 connect with the grid of T2, another access vdd voltage
(circuit voltage)；An access vdd voltage among the source electrode and drain electrode of T2, another is connected to the source electrode and drain electrode of T3
Among one；The grid access Gate signals (gate-control signal) of T3, another among the source electrode and drain electrode of T3 is as output
End is connect with the voltage input end of described control unit；
In the circuit of above-mentioned light sensor unit 106 shown in Fig. 2, T1, T3 are operated in linear zone, T2 as switching tube
Saturation region is operated in as amplifier tube.
Bias voltage described above, Reset signals and Gate signals can be provided by above-mentioned control unit 107.
That is, control unit 107 can export above-mentioned biased electrical for PIN by an analog voltage output port
Pressure, so that PIN may be under proper operating condition；
Control unit 107 can export Reset signals and Gate signals respectively by two digital signal output ports.
Control unit 107 specifically can be used for carrying out a controlling of sampling every the setting period；In a controlling of sampling mistake
Cheng Zhong, the useful signal that control unit 107 exports Reset signals reset above-mentioned light sensor unit, and then export
The invalid signals of Reset signals and the useful signal of Gate signals；During the useful signal of Gate signals, control unit
107 read the voltage value of the light sensor unit output by voltage input end；Later, described control unit is according to reading
Voltage value provides unit output corresponding control voltage to the pixel voltage.Control unit 107 can be additionally used in for light sensor
Unit 106 provides bias voltage.
Above-mentioned LCD window carries out the specific method of control with an automatic light meter by control unit, and idiographic flow is as shown in figure 3, packet
Include following S301~S302 steps：
Step S301：Control unit 107 reads the light sensor unit of the LCD window according to the ambient light light intensity of detection
The voltage of output.
In this step, above-mentioned control unit 107 reads the electricity that light sensor unit is exported according to the ambient light light intensity of detection
The specific method flow of pressure, as shown in figure 4, including following S401~S402 steps：
S401：The useful signal that the Time1 periods export Reset signals resets the light sensor unit.
Specifically, the Time1 periods are resetting time section, and the sequential of signal is as shown in figure 5, Gate signals are invalid letter
Number, Reset signals are useful signal, and transistor T1 is opened in above-mentioned light sensor unit shown in Fig. 2, and A points are reset to high electricity
It is flat.
S402：The Time2 periods export the invalid signals of Reset signals and the useful signal of Gate signals, and in institute
During the useful signal for stating Gate signals, the voltage value of the light sensor unit output is read.
Specifically, the Time2 periods are section of photosensitive readout time, as shown in figure 5, Gate signals are useful signal, Reset
Signal is useful signal, and T1 is closed in above-mentioned light sensor unit shown in Fig. 2, and PIN generates photoelectric current and discharges A points, A points electricity
Pressure is transmitted to the voltage input end of control unit 107 by open T3 by the amplification of T2 reflection to B points, B point voltages,
Control unit 107 reads the voltage value of voltage input end；And this voltage value can then reflect the photocurrent values that PIN is generated, you can
The light intensity that reflection PIN is sensed.
Step S302：Control unit 107 provides unit output according to the voltage of reading to the pixel voltage of the LCD window
Corresponding control voltage controls the pixel voltage to provide unit and exports corresponding pixel voltage to pixel electrode layer, so that
Corresponding voltage difference is formed between the pixel electrode layer and common electrode layer of liquid crystal layer both sides so that liquid crystal deflection respective corners
Degree.
In this step, control unit 107 first looks for pre-stored voltage value and corresponds to table, determines the value of the voltage read
The value of corresponding control voltage；For example, the value of voltage read such as the form storage of the following table 1 and the control of output can be searched
The correspondence of the value of voltage；The correspondence of the value of the voltage of reading and the value of the control voltage of output by technical staff according to
Experience and experiment pre-set and are stored in control unit 107.
Table 1
| Ambient brightness | The voltage of reading | The control voltage of output |
| L1 | V1 | Vdt1 |
| L2 | V2 | Vdt2 |
| L3 | V3 | Vdt3 |
| … | … | … |
| Ln | Vn | Vdtm |
And then control unit 107 provides unit the output phase to the pixel voltage according to the value of determining control voltage and answers
Control voltage.
The function of above-mentioned control unit 107 can be realized by the programming in logic in IC (integrated circuit) chip, how basis
Function described above carries out the technology contents that programming in logic is well known to those skilled in the art, and does not repeat herein.
Further, it is both provided with polarisation in the side far from the liquid crystal layer of the first glass substrate and the second glass substrate
Piece；Alternatively, the side of the first glass substrate or the second glass substrate far from the liquid crystal layer is provided with polaroid.
In the technical solution of the embodiment of the present invention, using two glass substrates being oppositely arranged, and set between two substrates
Liquid crystal layer；Ambient light light intensity is detected using light sensor unit, control unit is exported according to the light intensity that light sensor unit detects
Voltage, control pixel voltage provides unit and provides corresponding voltage to the common electrode layer and pixel electrode layer of liquid crystal layer both sides
Difference so that liquid crystal deflection can according to the ambient light light intensity of detection adjust automatically.In this way, when detecting that indoor light intensity is weaker
When, liquid crystal deflection can be controlled through brightness in more light enhanced room；Conversely, when detecting that indoor light intensity is stronger,
Liquid crystal deflection can be controlled to block penetrating for excessive light so that interior is maintained in the environment of a comfortable brightness.Due to room
The process of the adjustment of interior light intensity does not need to personnel's participation, substantially increases the intelligence of LCD window.
More preferably, in technical scheme of the present invention, pixel voltage is directly provided to the circuit of unit and light sensor unit
It is set on glass substrate, integrated level can be improved, reduce the connection installation of attachment and attachment of the LCD window outside glass substrate.
And a kind of circuit of light sensor unit provided by the invention contains only 3 transistors and an optoelectronic semiconductor, convenient in glass
It is made on substrate, structure is formed with the part for simplifying LCD window.
Those skilled in the art of the present technique are appreciated that the present invention includes being related to performing in operation described herein
One or more equipment.These equipment can specially be designed and be manufactured or can also include general for required purpose
Known device in computer.These equipment have the computer program being stored in it, these computer programs are selectively
Activation or reconstruct.Such computer program can be stored in equipment (for example, computer) readable medium or be stored in
It e-command and is coupled to respectively in any kind of medium of bus suitable for storage, the computer-readable medium is included but not
Be limited to any kind of disk (including floppy disk, hard disk, CD, CD-ROM and magneto-optic disk), ROM (Read-Only Memory, only
Read memory), RAM (Random Access Memory, immediately memory), EPROM (Erasable Programmable
Read-Only Memory, Erarable Programmable Read only Memory), EEPROM (Electrically Erasable
Programmable Read-Only Memory, Electrically Erasable Programmable Read-Only Memory), flash memory, magnetic card or light card
Piece.It is, readable medium includes any Jie by equipment (for example, computer) storage or transmission information in the form of it can read
Matter.
Those skilled in the art of the present technique be appreciated that can with computer program instructions come realize these structure charts and/or
The combination of each frame and these structure charts and/or the frame in block diagram and/or flow graph in block diagram and/or flow graph.This technology is led
Field technique personnel be appreciated that these computer program instructions can be supplied to all-purpose computer, special purpose computer or other
The processor of programmable data processing method is realized, so as to pass through the processing of computer or other programmable data processing methods
Device performs the scheme specified in the frame of structure chart and/or block diagram and/or flow graph disclosed by the invention or multiple frames.
Those skilled in the art of the present technique are appreciated that in the various operations crossed by discussion in the present invention, method, flow
Steps, measures, and schemes can be replaced, changed, combined or be deleted.Further, it is each with having been crossed by discussion in the present invention
Other steps, measures, and schemes in kind operation, method, flow may also be alternated, changed, rearranged, decomposed, combined or deleted.
Further, it is of the prior art have with disclosed in the present invention various operations, method, the step in flow, measure, scheme
It may also be alternated, changed, rearranged, decomposed, combined or deleted.
Those of ordinary skills in the art should understand that：The discussion of any of the above embodiment is exemplary only, not
It is intended to imply that the scope of the present disclosure is limited to these examples (including claim)；Under the thinking of the present invention, above example
Or can also be combined between the technical characteristic in different embodiments, step can be realized with random order, and be existed such as
Many other variations of the different aspect of the upper present invention, for simplicity, they are not provided in details.Therefore, it is all
Within the spirit and principles in the present invention, any omission for being made, modification, equivalent replacement, improvement etc. should be included in the present invention's
Within protection domain.
Claims (10)
1. a kind of LCD window, including：First and second glass substrate that is oppositely arranged, is set to the liquid crystal layer being set between two substrates
The common electrical between pixel electrode layer, the liquid crystal layer and the second substrate between the liquid crystal layer and the first substrate
Pole layer and the circuit such as lower unit：
Light sensor unit for detecting ambient light light intensity, exports relevant voltage；
Control unit for the voltage exported according to the light sensor unit, exports corresponding control voltage；
Pixel voltage provides unit, according to the control voltage that described control unit exports, exports corresponding pixel voltage to described
Pixel electrode layer, so as to form corresponding voltage difference between the common electrode layer and the pixel electrode layer.
2. LCD window according to claim 1, which is characterized in that the first glass substrate specifically includes liquid crystal region and circuit
Region, wherein, the liquid crystal region of the first glass substrate is opposite with the second glass substrate；And
The liquid crystal layer is specifically sandwiched between the liquid crystal region of the first glass substrate and the second glass substrate；
The circuit of the light sensor unit and pixel voltage offer unit is set to the circuit region of the first glass substrate.
3. LCD window according to claim 1 or 2, which is characterized in that
The light sensor unit specifically detects ambient light light intensity the output phase induced current using PIN photodiode, recycles electricity
Road converts electrical current into relevant voltage output.
4. LCD window according to claim 3, which is characterized in that the light sensor unit further includes：Transistor T1,
T2、T3；
Wherein, the grid of one end of PIN and T2 connect, the bias voltage of other end access setting；The grid access Reset of T1 is answered
Position signal, one among the source electrode and drain electrode of T1 connect with the grid of T2, another accesses vdd voltage；The source electrode of T2 and leakage
An access vdd voltage among pole, another is connected to one among the source electrode and drain electrode of T3；The grid access Gate of T3
Gate-control signal, another among the source electrode and drain electrode of T3 are connected as output terminal and the voltage input end of described control unit.
5. LCD window according to claim 4, which is characterized in that
Described control unit is specifically used for carrying out a controlling of sampling every the setting period；During a controlling of sampling, institute
The useful signal for stating control unit output Reset signals resets the light sensor unit, and then export Reset signals
Invalid signals and Gate signals useful signal；During the useful signal of the Gate signals, described control unit is led to
Overvoltage input terminal reads the voltage value of the light sensor unit output；Later, described control unit is according to the voltage of reading
Value provides unit output corresponding control voltage to the pixel voltage；
Described control unit also provides for the bias voltage.
6. LCD window according to claim 1 or 2, which is characterized in that in the first glass substrate and the second glass substrate
Side far from the liquid crystal layer is both provided with polaroid.
7. LCD window according to claim 1 or 2, which is characterized in that remote in the first glass substrate or the second glass substrate
Side from the liquid crystal layer is provided with polaroid.
8. a kind of control method with an automatic light meter of LCD window, which is characterized in that including：
Read the voltage that the light sensor unit of the LCD window is exported according to the ambient light light intensity of detection；
It provides unit output corresponding control voltage to the pixel voltage of the LCD window according to the voltage of reading, controls the picture
Plain voltage providing unit exports corresponding pixel voltage to pixel electrode layer, so that the pixel electrode layer in liquid crystal layer both sides
Corresponding voltage difference is formed between common electrode layer；
Wherein, the pixel electrode layer, liquid crystal layer and common electrode layer be set in turn in that the LCD window is oppositely arranged first,
Between two glass substrates.
9. according to the method described in claim 8, it is characterized in that, the light sensor unit for reading the LCD window according to
The voltage of the ambient light light intensity output of detection, specifically includes：
The useful signal of output Reset signals resets the light sensor unit；
The invalid signals of Reset signals and the useful signal of Gate signals are exported, and in the useful signal of the Gate signals
Period reads the voltage value of the light sensor unit output；
Wherein, the light sensor unit specifically includes：PIN photodiode, transistor T1, T2, T3；
Wherein, the grid of one end of PIN and T2 connect, the bias voltage of other end access setting；The grid access Reset of T1 is answered
Position signal, one among the source electrode and drain electrode of T1 connect with the grid of T2, another accesses vdd voltage；The source electrode of T2 and leakage
An access vdd voltage among pole, another is connected to one among the source electrode and drain electrode of T3；The grid access Gate of T3
Gate-control signal, another among the source electrode and drain electrode of T3 are connected as output terminal and the voltage input end of described control unit.
10. method according to claim 8 or claim 9, which is characterized in that the voltage according to reading is to the LCD window
Pixel voltage provides unit output corresponding control voltage, specifically includes：
It searches pre-stored voltage value and corresponds to table, determine the value of the control voltage corresponding to the value of the voltage read；
According to the value of determining control voltage the unit control voltage that output is answered is provided to the pixel voltage.
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