CN103198806B - A kind of display device - Google Patents

A kind of display device Download PDF

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Publication number
CN103198806B
CN103198806B CN201310120210.XA CN201310120210A CN103198806B CN 103198806 B CN103198806 B CN 103198806B CN 201310120210 A CN201310120210 A CN 201310120210A CN 103198806 B CN103198806 B CN 103198806B
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China
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described
resistance
end
pixel
sub
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CN201310120210.XA
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Chinese (zh)
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CN103198806A (en
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郭仁炜
董学
车春城
孟昭晖
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北京京东方光电科技有限公司
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    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G09G3/3607Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00Aspects of the constitution of display devices
    • G09G2300/04Structural and physical details of display devices
    • G09G2300/0439Pixel structures
    • G09G2300/0452Details of colour pixel setup, e.g. pixel composed of a red, a blue and two green components
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00Control of display operating conditions
    • G09G2320/06Adjustment of display parameters
    • G09G2320/0626Adjustment of display parameters for control of overall brightness
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2360/00Aspects of the architecture of display systems
    • G09G2360/14Detecting light within display terminals, e.g. using a single or a plurality of photosensors
    • G09G2360/144Detecting light within display terminals, e.g. using a single or a plurality of photosensors the light being ambient light

Abstract

The invention provides a kind of photo controller for display device drived control and display device.Described photo controller comprises: voltage source, in the same way input block, oppositely input block, comparing unit and control module.Described display device comprises: be arranged at the multiple pixels on display panel, for controlling data drive circuit and grid driving circuit, time schedule controller and the detuner of the display of multiple pixel, described detuner is used for the image information exporting each pixel to described time schedule controller, described time schedule controller is for controlling the output timing of described data drive circuit and grid driving circuit, described each pixel comprises multiple sub-pixel, and in described multiple sub-pixel, at least one is blast sub-pixel; Described display device also comprises the photo controller be connected with described time schedule controller, and for environmentally brightness change is to time schedule controller output control signal, described control signal is for controlling the display of described blast sub-pixel.

Description

A kind of display device

Technical field

The present invention relates to display technique field, particularly relate to a kind of display device.

Background technology

Liquid crystal display, or claim LCD (LiquidCrystalDisplay), its power consumption is very low, and therefore extremely slip-stick artist's favor, is applicable to various electronic equipment.Its cardinal principle utilizes electric field controls liquid crystal to regulate translucidus to show image, can be applicable in the electronic product such as computer, mobile phone.

Concrete, as shown in Figure 1, existing liquid crystal display comprises: detuner 100, time schedule controller 101, data drive circuit 102, grid driving circuit 103, display panel 104.Wherein, display panel 104 comprises: many grid lines and a plurality of data lines, described grid line and data line arranged in a crossed manner, form multiple sub-pixels of red, green, blue three kinds of different colours.Wherein the corresponding thin film transistor (TFT) 30 of each sub-pixel, comprising: grid, source electrode and drain electrode, wherein said grid and grid line electrical connection, source electrode and data line electrical connection, the pixel electrode electrical connection of drain electrode and sub-pixel.The signal of data drive circuit 102 control data line G1-Gn exports, and the signal that grid driving circuit 103 controls grid line S1-Sn exports.Usually, when display normally works, power supply provides required voltage to modules, detuner 100 exports the image information of the sub-pixel of red, green, blue three kinds of different colours to time schedule controller 101, the output timing of time schedule controller 101 control data driving circuit 102 and grid driving circuit 103, grid driving circuit 103 is opened the thin film transistor (TFT) that every bar grid line connects successively one by one and is inputted corresponding sub-pixel to make the data-signal of data drive circuit 102, make the liquid crystal deflection of this subpixel area, display different pictures.

But because human eye is more responsive to light, the place that light is brighter out of doors, brightness of display screen is inadequate, then image display is unclear, and visual effect will be very poor.

Summary of the invention

Embodiments of the invention provide a kind of display device, and described display device can change screen display brightness according to the brightness change of surrounding environment.

For achieving the above object, embodiments of the invention adopt following technical scheme:

The embodiment of the present invention provides a kind of photo controller for display device drived control, comprising: voltage source, in the same way input block, oppositely input block, comparing unit and control module; Wherein,

Input block comprises in the same way: first input end in the same way, is connected with the positive pole of voltage source; Second input end in the same way, is connected with the negative pole of voltage source; And output terminal in the same way;

Reverse input block comprises: oppositely first input end, is connected with first input end in the same way; Reverse second input end, is connected with the second input end in the same way; And inverse output terminal;

Comparing unit comprises: comparing unit first input end, is connected with output terminal in the same way; Comparing unit second input end, is connected with inverse output terminal; Comparing unit first output terminal, is connected with reverse second input end; Comparing unit second output terminal;

Control module comprises: control module first input end, is connected with reverse first input end; Control module second input end, is connected with comparing unit second output terminal; Control module output terminal, for exporting control signal, described control signal is used for the driving circuit that environmentally brightness change controls display device.

Concrete, described input block in the same way comprises: photoresistance, the second resistance and the first resistance, wherein,

The first end of photoresistance is the first input end in the same way of input block in the same way;

The first end of the second resistance is connected with the second end of photoresistance, and the second end of the second resistance is second input end in the same way of input block in the same way;

The first end of the first resistance is connected with the second end of photoresistance, and the second end of the first resistance is the output terminal in the same way of input block in the same way.

Concrete, described reverse input block comprises:

3rd resistance, the 5th resistance and the 4th resistance, wherein,

The first end of the 3rd resistance is the reverse first input end of reverse input block;

The first end of the 4th resistance is connected with the second end of the 3rd resistance, and the second end of the 4th resistance is reverse second input end of reverse input block;

The first end of the 5th resistance is connected with the 3rd resistance second end, and the second end of the 5th resistance is the inverse output terminal of reverse input block.

Concrete, described comparing unit comprises: comparer, the 6th resistance, the 7th resistance, the 8th resistance and triode; Wherein,

Comparer, comprise hold in the same way, backward end and output terminal, it is held in the same way and is connected with the output terminal of input block in the same way, and its backward end is connected with the output terminal of reverse input block;

The first end of the 7th resistance is connected with the output terminal of comparer;

The first end of the 6th resistance is connected with the backward end of comparer, and the second end of the 6th resistance is connected with the second end of the 7th resistance;

The first end of the 8th resistance is connected with the second end of the 7th resistance;

Triode, comprises base stage, emitter and collector, and the base stage of described triode is connected with the second end of the 8th resistance, and launch very comparing unit first output terminal, current collection is comparing unit second output terminal very.

Concrete, described control module comprises: the 9th resistance and relay, wherein,

The first end of the 9th resistance is control module first input end, and the second end of the 9th resistance is control module second input end;

Relay, comprise first input end, the second input end and output terminal, first input end in the same way, the oppositely reverse first input end of input block of the first end of its first input end and the 9th resistance and in the same way input block are connected, second end and comparing unit second output terminal of its second input end and the 9th resistance are connected, and its output terminal is control module output terminal.

Concrete, the voltage of described voltage source is between 2V-8V.

Concrete, the resistance of described first resistance, the 3rd resistance, the 5th resistance, the 6th resistance, the 7th resistance, the 8th resistance and the 9th resistance is between 1 Ω-1000 Ω.

Concrete, the resistance of described second resistance and the 4th resistance is between 1 Ω-30 Ω.

The embodiment of the present invention also provides a kind of display device, comprise: be arranged at the multiple pixels on display panel, for controlling data drive circuit and grid driving circuit, time schedule controller and the detuner of the display of multiple pixel, described detuner is used for the image information exporting each pixel to described time schedule controller, described time schedule controller is for controlling the output timing of described data drive circuit and grid driving circuit, wherein

Described each pixel comprises multiple sub-pixel, and in described multiple sub-pixel, at least one is blast sub-pixel;

Described display device also comprises the photo controller be connected with described time schedule controller, described photo controller adopts the photo controller described in above-mentioned any one, described photo controller is used for environmentally brightness change and exports control signal to time schedule controller, and described control signal is for controlling the display of described blast sub-pixel.

Further, described photo controller is used for environmentally brightness change and exports control signal to time schedule controller, and described control signal, for controlling the display of described blast sub-pixel, is specially:

When ambient brightness exceedes predetermined threshold value, described photo controller exports start signal to described time schedule controller, and described start signal control data driving circuit, to described blast sub-pixel outputting data signals, makes described blast sub-pixel show;

When ambient brightness is lower than predetermined threshold value, described photo controller exports shutdown signal to described time schedule controller, and described shutdown signal control data driving circuit stops to described blast sub-pixel outputting data signals, and described blast sub-pixel is not shown.

Further, described each pixel comprises the sub-pixel of four different colours, and described blast sub-pixel is white sub-pixels.

Further, described blast sub-pixel and other three sub-pixels are oppositely arranged.

Embodiments provide a kind of display device, because display device adds blast sub-pixel and photo controller, make it possible to the change along with ambient brightness, select blast sub-pixel whether to show, with adjusting display brightness.When surrounding environment brightness is greater than predetermined threshold value, photo controller exports control signal control data driving circuit and shows to blast sub-pixel outputting data signals, and improve display brightness, make when ambient brightness is higher, display device display is more clear; When ambient brightness is lower than predetermined threshold value, photo controller exports control signal control data driving circuit to be stopped to blast sub-pixel outputting data signals, and namely described blast sub-pixel does not show, and realize in darker environment, display device can the amount of saving energy.

Accompanying drawing explanation

Fig. 1 is existing liquid crystal display schematic diagram;

A kind of array base-plate structure schematic diagram that Fig. 2 provides for the embodiment of the present invention;

A kind of dot structure schematic diagram that Fig. 3 provides for the embodiment of the present invention;

The another kind of dot structure schematic diagram that Fig. 4 provides for the embodiment of the present invention;

A kind of photo controller schematic diagram that Fig. 5 provides for the embodiment of the present invention;

A kind of driving method schematic diagram that Fig. 6 provides for the embodiment of the present invention;

Reference numeral:

100-detuner; 101-time schedule controller; 102-data drive circuit; 103-grid driving circuit; 104-display panel; 105-photo controller; 30-thin film transistor (TFT); R-red sub-pixel; G-green sub-pixels; B-blue subpixels; W-white sub-pixels; 11-is input block in the same way; The reverse input block of 12-; 13-comparing unit; 14-control module; R l-photoresistance; R1-first resistance; R2-second resistance; R3-the 3rd resistance; R4-the 4th resistance; R5-the 5th resistance; R6-the 6th resistance; R7-the 7th resistance; R8-the 8th resistance; R9-the 9th resistance; T-triode; K-relay.

Embodiment

Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.

Embodiments provide a kind of display device, comprise: be arranged at the multiple pixels on display panel, for controlling data drive circuit and grid driving circuit, time schedule controller and the detuner of the display of multiple pixel, described detuner is used for the image information exporting each pixel to described time schedule controller, described time schedule controller is for controlling the output timing of described data drive circuit and grid driving circuit, wherein, described each pixel comprises multiple sub-pixel, and in described multiple sub-pixel, at least one is blast sub-pixel;

Described display device also comprises the photo controller be connected with described time schedule controller, and described photo controller is used for environmentally brightness change and exports control signal to time schedule controller, and described control signal is for controlling the display of described blast sub-pixel.

It should be noted that, described display panel is provided with multiple pixel, display panel can be display panels also can be organic electroluminescence display panel, or can be other any active matrix display panels with multiple pixel.Display panel generally comprises array base palte and color membrane substrates.Pixel is the base unit of image display, generally comprises the sub-pixel of red (R), green (G), blue (B) three kinds of different colours.Each sub-pixel is arranged in the network that on array base palte many grid line arranged in a crossed manner and data line are formed, wherein, the corresponding thin film transistor (TFT) of each sub-pixel, described thin film transistor (TFT) comprises: grid, source electrode and drain electrode, the grid of described thin film transistor (TFT) is connected with grid line, source electrode is connected with data line, and drain electrode is connected with pixel electrode.Again due to, grid driving circuit controls the output of gate line signals, the output of data drive circuit control data line signal, then can be controlled the unlatching of thin film transistor (TFT) and the input of data-signal and pixel electrode voltage of corresponding sub-pixel by control gate driving circuit and data drive circuit, and then the display brightness of each sub-pixel can be controlled.With each sub-pixel on array base palte one to one, color membrane substrates has the chromatic filter layer of different colours, can realize display device colour display.

In the structure of some other display panel, described chromatic filter layer also can be integrated on array base palte, namely on the basis of above-mentioned array base-plate structure, after the structure fabrications such as thin film transistor (TFT), grid line, data line complete, make chromatic filter layer above it, then the subtend substrate of this array base palte is generally transparency carrier.Concrete, the structure that the embodiment of the present invention is integrated in array base palte with chromatic filter layer is described, and as shown in Figure 2, for being integrated with the array base palte of chromatic filter layer, described array base palte comprises multiple pixel cell.Pixel on described array base palte comprises the sub-pixel of red (R), green (G), blue (B), white (W) four kinds of different colours, and wherein, described white sub-pixels is blast sub-pixel.Certainly, the sub-pixel numbers that each pixel comprises is not limited to four kinds, and each pixel can also comprise the sub-pixel of other colors, and described blast sub-pixel can also be clear subpixel.It should be noted that, described blast sub-pixel refers to that, relative to red, green, blue sub-pixel, the transmitance of light is higher, the sub-pixel that display brightness is larger.The transmitance of such as red sub-pixel is about 18%, and the transmitance of green sub-pixels is about 60%, and the transmitance of blue subpixels is about 6%, and the transmitance of white sub-pixels can reach more than 96%.In the embodiment of the present invention, other structures of display device are same as the prior art, repeat no more herein.

In the liquid crystal indicator of prior art, as shown in Figure 1, power supply provides required voltage to modules, detuner 100 exports the image information (image information as rgb pixel) of the sub-pixel of different colours to time schedule controller 101, time schedule controller 101 output timing signal gives grid driving circuit 103 and data drive circuit 102 respectively, the output timing of control gate driving circuit 103 and data drive circuit 102.Array base palte comprises many grid lines and data line, grid line and data line vertical distribution, formed latticed, a sub-pixel is formed in each grid, each sub-pixel comprises a thin film transistor (TFT), thin film transistor (TFT) comprises grid, source electrode and drain electrode, and grid is connected with grid line, and source electrode is connected with data line.The data that thin film transistor (TFT) that every bar grid line connects inputs to make the sub-pixel corresponding with this thin film transistor (TFT) write corresponding data drive circuit 102 opened successively one by one by grid driving circuit 103, the i.e. voltage of pixel electrode, control liquid crystal deflection, display different pictures.

In the embodiment of the present invention, described display device comprises multiple pixel, and each pixel comprises multiple sub-pixel, and in described multiple sub-pixel, at least one is blast sub-pixel.Described display device also comprises: the photo controller be connected with described time schedule controller, described photo controller is used for environmentally brightness change and exports control signal to time schedule controller, described control signal is for controlling the display of described blast sub-pixel, and namely data drive circuit exports corresponding pixel electrode voltage to described blast sub-pixel.

Concrete, comprise red (R), green (G), blue (B), white (W) four sub pixel with described display device, blast blast sub-pixel is wherein white sub-pixels is that example is described.Accordingly, described detuner has red (R) to time schedule controller input, green (G), blue (B), the image information of (W) each sub-pixel in vain, photo controller exports control signal according to the change of external environment brightness to time schedule controller, the output timing of time sequence controller grid driving circuit and data drive circuit, control gate driving circuit except routine successively opens thin film transistor (TFT) on each bar grid line and data drive circuit except RGB sub-pixel output pixel electrode voltage data, whether time schedule controller also will write according to the data of the control signal control white sub-pixels of photo controller input, thus whether the liquid crystal controlling white sub-pixels corresponding deflects.Concrete, when the brightness of surrounding environment is greater than certain threshold value, the liquid crystal deflection that white sub-pixels is corresponding can be made, realize printing opacity, and then improve display brightness; Or when the brightness of surrounding environment is less than certain threshold value, liquid crystal corresponding to white sub-pixels can be made not deflect, and namely this sub-pixel is light tight, with the amount of saving energy.

Above-described embodiment for described display device for liquid crystal indicator is described, it should be noted that, the display device that the embodiment of the present invention provides can also be applicable to organic light-emitting display device (OLED, OrganicLightEmittingDisplay) and any other has the active matrix display device of multiple pixel.When for organic light-emitting display device, described photo controller environmentally brightness exports control signal to time schedule controller, whether described control signal is luminous for the blast sub-pixel (as white sub-pixels) controlled wherein, namely when ambient brightness is higher than predetermined threshold value, blast sub-pixel for emitting light, improves display brightness, when ambient brightness is lower than predetermined threshold value, blast sub-pixel is not luminous, saves energy consumption.

When described display device is liquid crystal indicator, liquid crystal indicator utilizes electric field controls liquid crystal deflection to change translucidus to show image.According to the direction of an electric field driving liquid crystal, liquid crystal indicator is roughly divided into vertical electric field driving driving with horizontal component of electric field.Vertical electric field electric field type liquid crystal display device is public electrode positioned opposite to each other and pixel electrode on upper and lower base plate, vertical electric field is formed to drive liquid crystal between described public electrode and pixel electrode, as TN (TwistNematic, twisted-nematic) type, VA (VerticalAlignment, multi-domain vertical alignment) type liquid crystal indicator.Horizontal component of electric field electric field type liquid crystal display device arranges public electrode and pixel electrode on infrabasal plate, the electric field of level or multidimensional is formed to drive liquid crystal between described public electrode and pixel electrode, as ADS (Advanced-SuperDimensionalSwitching, senior super dimension field switch) type, IPS (InPlaneSwitch, transverse electric field effect) type liquid crystal indicator.The display device that the embodiment of the present invention provides goes for the liquid crystal indicator of any one type above-mentioned.

A kind of display device that the embodiment of the present invention provides, described display device comprises multiple pixel, and each pixel comprises multiple sub-pixel, and in described multiple sub-pixel, at least one is blast sub-pixel.And described display device also comprises photo controller, whether described photo controller can, according to the change of surrounding environment brightness, select blast sub-pixel to show, make when ambient brightness is higher, display device display is more clear, and when ambient brightness is not high, display device can the amount of saving energy.

Optionally, described photo controller is used for environmentally brightness change and exports control signal to time schedule controller, and described control signal, for controlling the display of described blast sub-pixel, is specially:

When ambient brightness exceedes predetermined threshold value, described photo controller exports start signal to described time schedule controller, described start signal control data driving circuit is to described blast sub-pixel outputting data signals, and described blast sub-pixel shows, and improves display brightness;

When ambient brightness is lower than predetermined threshold value, described photo controller exports shutdown signal to described time schedule controller, described shutdown signal control data driving circuit stops to described blast sub-pixel outputting data signals, and described blast sub-pixel no longer shows, the amount of saving energy.

Example, when the brightness of surrounding environment is greater than 300nit, described photo controller exports start signal to described time schedule controller, the control signal that described time schedule controller exports according to photo controller and the image information that detuner exports, control data driving circuit is to blast sub-pixel write data, the i.e. pixel electrode voltage of blast sub-pixel, realizes display; When the brightness of surrounding environment is less than 300nit, described photo controller exports shutdown signal to described time schedule controller, the control signal that described time schedule controller exports according to photo controller and the image information that detuner exports, control data driving circuit is not to blast sub-pixel write data, and blast sub-pixel does not show.It should be noted that, described luminance threshold is can be adjustable according to actual environment, the embodiment of the present invention for described threshold value for 300nit is described.

Optionally, described detuner is FPGA (Field-ProgrammableGateArray, field programmable gate array) detuner.

Optionally, each pixel on described display base plate includes the sub-pixel of four kinds of different colours, and wherein said blast sub-pixel is white sub-pixels.Concrete, as shown in Figure 2, each pixel on array base palte includes red sub-pixel (R), green sub-pixels (G), blue subpixels (B) and white sub-pixels (W), wherein, white sub-pixels (W) is blast sub-pixel.Certain described blast sub-pixel can also be the sub-pixel of clear subpixel or other colors.It can also be such as yellow sub-pixel etc.

Optionally, described blast sub-pixel and other three sub-pixels are relative.Concrete, each pixel comprises the sub-pixel of four kinds of different colours, and the sub-pixel of described four different colours can be arranged in order, and can also be as shown in Figure 3, Figure 4, and the sub-pixel of described blast sub-pixel and other three colors is oppositely arranged.For described sub-pixel shape for rectangle, the sub-pixel of described blast sub-pixel and other three colors is oppositely arranged and refers to, the minor face of corresponding three the blast sub-pixels in long limit of described blast sub-pixel, described blast sub-pixel can be positioned at any up and down position of three sub-pixels, determined by the arrangement mode of three sub-pixels, preferably three sub-pixels vertically arrange, blast sub-pixel level is arranged at top or the below of three sub-pixels, like this can the brightness of sub-pixel of each color of blast, display effect is better.

Concrete, the embodiment of the present invention also provides a kind of photo controller for display device drived control, environmentally brightness change can export control signal to time schedule controller.

Optionally, as shown in Figure 5, described photo controller comprises: voltage source, in the same way input block 11, oppositely input block 12, comparing unit 13 and control module 14; Wherein,

Input block 11 is for exporting comparative voltage in the same way, comprising: first input end in the same way, is connected with the positive pole of voltage source; Second input end in the same way, is connected with the negative pole of voltage source; And output terminal in the same way;

Reverse input block 12, for output reference voltage, comprising: oppositely first input end, is connected with first input end in the same way; Reverse second input end, is connected with the second input end in the same way; And inverse output terminal;

Comparing unit 13 for comparing comparative voltage and reference voltage, and according to the conducting state of comparative result photo controller, comprises comparing unit first input end, is connected with the first output terminal in the same way; Comparing unit second input end, is connected with inverse output terminal; Comparing unit first output terminal, is connected with reverse second input end; Comparing unit second output terminal;

Control module 14 exports control signal for the conducting state according to circuit, comprises control module first input end, is connected with reverse first input end; Control module second input end, is connected with comparing unit second output terminal; Control module output terminal, for exporting control signal.

Wherein, voltage source is used for providing a fixed voltage, input block is for generation of a comparative voltage in the same way, reverse input block is for generation of a reference voltage, after described comparative voltage and reference voltage are compared by described comparing unit, if described comparative voltage is greater than described reference voltage, then described comparing unit is by whole circuit turn-on, control module exports a high level, then photo controller is the start signal of corresponding blast sub-pixel to the control signal that time schedule controller exports, and namely data drive circuit is to blast sub-pixel write data; If described comparative voltage is less than described reference voltage, then whole circuit disconnects by described comparing unit, control module exports a low level, then photo controller is the shutdown signal of corresponding blast sub-pixel to the control signal that time schedule controller exports, and namely data drive circuit is not to blast sub-pixel write data.Wherein, the size of comparative voltage is relevant with the brightness of surrounding environment, and reference voltage can be a fixing threshold value, for comparing with comparative voltage.

Optionally, as shown in Figure 5, described input block in the same way 11 comprises: photoresistance R l, the first resistance R1 and the second resistance R2, wherein,

Photoresistance R lcan change self-resistance according to the bright change of surrounding environment, its first end is the first input end in the same way of input block in the same way;

The first end of the second resistance R2 and photoresistance R lthe second end be connected, second end of the second resistance R2 is second input end in the same way of input block in the same way;

The first end of the first resistance R1 and photoresistance R lthe second end be connected, second end of the first resistance R1 is the output terminal in the same way of input block in the same way.

Concrete, photoresistance can change self resistance according to the brightness of surrounding environment, change the size of the electric current of input block in the same way, and then changes the size of output voltage of output terminal in the same way.And when the brightness of surrounding environment is larger, then the resistance of described photoresistance is less, then the comparative voltage of the corresponding output of output terminal is in the same way larger; When the brightness of surrounding environment is less, larger in the resistance of described photoresistance, then the comparative voltage of the corresponding output of output terminal is in the same way less.

Optionally, described reverse input block 12 comprises: the 3rd resistance R3, the 5th resistance R5 and the 4th resistance R4, wherein,

The first end of the 3rd resistance R3 is the reverse first input end of reverse input block;

The first end of the 4th resistance R4 is connected with second end of the 3rd resistance R3, and second end of the 4th resistance R4 is reverse second input end of reverse input block;

The first end of the 5th resistance R5 is connected with the 3rd resistance R3 second end, and second end of the 5th resistance R5 is the inverse output terminal of reverse input block.

Optionally, described comparing unit 13 comprises: comparer U, the 6th resistance R6, the 7th resistance R7, the 8th resistance R8 and triode T; Wherein,

Comparer U, comprise hold in the same way, backward end and output terminal, it is held in the same way and is connected with the output terminal of input block in the same way, and its backward end is connected with the output terminal of reverse input block;

The first end of the 7th resistance R7 is connected with the output terminal of comparer U;

The first end of the 6th resistance R6 is connected with the backward end of comparer U, and second end of the 6th resistance R6 is connected with second end of the 7th resistance R7;

The first end of the 8th resistance R8 is connected with second end of the 7th resistance R7;

Triode T, comprises base stage B, emitter E and collector C, and its base stage B is connected with second end of the 8th resistance R8, and emitter E is comparing unit first output terminal, and collector C is comparing unit second output terminal.

Concrete, holding in the same way of described comparer is connected with the output terminal of input block in the same way, the backward end of described comparer is connected with the output terminal of reverse input block, described comparer is used for the reference voltage of the comparative voltage of input end input in the same way and reverse input end input to compare, if described comparative voltage is greater than reference voltage, and described triode ON; If described comparative voltage is less than reference voltage, described triode disconnects.

It should be noted that, the comparing unit breaker in middle pipe illustrated in figure is triode, in reality, also can apply two diodes in parallel and replace, or other any devices that can realize switching tube effect, and the present invention does not limit.

Optionally, described control module 14 comprises: the 9th resistance R9 and relay K, wherein,

The first end of the 9th resistance R9 is control module first input end, and second end of the 9th resistance R9 is control module second input end;

Relay K, comprise first input end, the second input end and an output terminal, first input end in the same way, the oppositely reverse first input end of input block of the first end of its first input end and the 9th resistance R9 and in the same way input block are all connected, second end and comparing unit second output terminal of its second input end and the 9th resistance R9 are connected, and its output terminal is control module output terminal.Concrete, when described comparative voltage is greater than reference voltage, then the triode ON of comparing unit, the output terminal of relay exports a high level; When described comparative voltage is less than reference voltage, then the triode of comparing unit disconnects, and relay output end exports a low level.

Optionally, the voltage of described voltage source is between 2V-8V.

Optionally, as shown in FIG., the resistance of described first resistance, the 3rd resistance, the 5th resistance, the 6th resistance, the 7th resistance, the 8th resistance and the 9th resistance is between 1 Ω-1000 Ω.Being understandable that, is with above-mentioned resistance for fixed resistance is illustrated in figure, and in reality, above-mentioned resistance can be also adjustable resistance, and the present invention does not limit.

Optionally, the resistance of described second resistance and described 4th resistance is between 1 Ω-30 Ω.Be understandable that, for swept resistance is illustrated in figure for described second resistance and described 4th resistance, in reality, second resistance and the 4th resistance also can be fixed resistance, then can not arbitrarily regulate for choosing of reference voltage, therefore the second resistance and the 4th resistance are preferably adjustable resistance, as swept resistance.

It should be noted that, for convenience of description, the first end of each resistance described refers to upper end or the left end of each resistance shown in figure, and the second end of each resistance described refers to lower end or the right-hand member of each resistance shown in figure.

It should be noted that, the predetermined threshold value of described ambient brightness can regulate as required, as having higher requirement to the display quality in brighter environment, predetermined threshold value can be lower, as having higher requirement to power saving in darker environment, predetermined threshold value can be relatively higher, and these the present invention all do not limit.Concrete, can be realized by the value of the reference voltage regulating reverse input block to export.

The embodiment of the present invention additionally provides a kind of driving method applying the display device of above-mentioned photo controller, as shown in Figure 6, photo controller 105 exports control signal according to the brightness change of surrounding environment to time schedule controller 101, whether described control signal is used for control data driving circuit to the output of described blast sub-pixel, and then control corresponding blast sub-pixel and show; Detuner 100 is connected with time schedule controller 101, exports the image information comprising each sub-pixel of blast sub-pixel to time schedule controller 101; Time schedule controller 101, according to the control signal of the image information of detuner 100 and photo controller 105, controls the display of each sub-pixel.

Wherein, comprise photoresistance in photo controller, the resistance of described photoresistance reduces with the increase of the brightness of surrounding environment, increases with the reduction of the brightness of surrounding environment.

Described photo controller is used for environmentally brightness change and exports control signal to time schedule controller, described control signal is used for control data driving circuit to described blast sub-pixel outputting data signals, be specially: when ambient brightness exceedes predetermined threshold value, described photo controller exports high level to time schedule controller, then described time schedule controller exports start signal, described start signal control data driving circuit, to described blast sub-pixel outputting data signals, makes described blast sub-pixel show; Or, when ambient brightness is lower than predetermined threshold value, described photo controller is to time schedule controller output low level, then described time schedule controller exports shutdown signal, described shutdown signal control data driving circuit stops to described blast sub-pixel outputting data signals, and described blast sub-pixel is not shown.

Concrete, power supply provides required voltage to modules, in photo controller, photoresistance can according to the automatic brightness adjustment resistance of surrounding environment, and when the brightness of surrounding environment is greater than certain threshold value, can be such as be greater than 300nit, then the resistance of photoresistance is less than certain value, the voltage of input block output terminal is in the same way made to be greater than the voltage of reverse input block output terminal output, then triode ON, relay exports a high level, described time schedule controller exports start signal, control data driving circuit is to blast sub-pixel write data, blast sub-pixel realizes display, the brightness of display device strengthens, show more high-visible under the environment of high brightness, when the brightness of surrounding environment is less than certain threshold value, can be such as be less than 300nit, then the resistance of photoresistance is greater than certain value, make the voltage of input block output terminal in the same way be less than the voltage of reverse input block output terminal output, then triode disconnects, and relay exports a low level, described time schedule controller exports shutdown signal, control data driving circuit is not to blast sub-pixel write data, and blast sub-pixel does not realize display and then the amount of saving energy.

The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of described claim.

Claims (15)

1. a display device, comprise: be arranged at the multiple pixels on display panel, for controlling data drive circuit and grid driving circuit, time schedule controller and the detuner of the display of multiple pixel, described detuner is used for the image information exporting each pixel to described time schedule controller, described time schedule controller, for controlling the output timing of described data drive circuit and grid driving circuit, is characterized in that:
Described display panel also comprises grid line and data line;
Described each pixel comprises multiple sub-pixel, and at least one is blast sub-pixel in described multiple sub-pixel, the corresponding thin film transistor (TFT) of each sub-pixel, described thin film transistor (TFT) comprises: grid, source electrode and drain electrode, the grid of described thin film transistor (TFT) is connected with described grid line, and the source electrode of described thin film transistor (TFT) is connected with described data line; Described grid driving circuit controls the output of described gate line signals, and described data drive circuit controls the output of described data line signal;
Described display device also comprises the photo controller be connected with described time schedule controller, and described photo controller is used for environmentally brightness change and exports control signal to time schedule controller, and described control signal is for controlling the display of described blast sub-pixel;
Described photo controller comprises: voltage source, in the same way input block, oppositely input block, comparing unit and control module; Wherein,
Input block comprises in the same way: first input end in the same way, is connected with the positive pole of voltage source; Second input end in the same way, is connected with the negative pole of voltage source; And output terminal in the same way;
Reverse input block comprises: oppositely first input end, is connected with first input end in the same way; Reverse second input end, is connected with the second input end in the same way; And inverse output terminal;
Comparing unit comprises: comparing unit first input end, is connected with output terminal in the same way; Comparing unit second input end, is connected with inverse output terminal; Comparing unit first output terminal, is connected with reverse second input end; Comparing unit second output terminal;
Control module comprises: control module first input end, is connected with reverse first input end; Control module second input end, is connected with comparing unit second output terminal; Control module output terminal, for exporting control signal, described control signal is used for the driving circuit that environmentally brightness change controls display device.
2. display device according to claim 1, is characterized in that, described photo controller is used for environmentally brightness change and exports control signal to time schedule controller, and described control signal, for controlling the display of described blast sub-pixel, is specially:
When ambient brightness exceedes predetermined threshold value, described photo controller exports start signal to described time schedule controller, and described start signal control data driving circuit, to described blast sub-pixel outputting data signals, makes described blast sub-pixel show;
When ambient brightness is lower than predetermined threshold value, described photo controller exports shutdown signal to described time schedule controller, and described shutdown signal control data driving circuit stops to described blast sub-pixel outputting data signals, and described blast sub-pixel is not shown.
3. display device according to claim 1 and 2, is characterized in that, described each pixel comprises the sub-pixel of four different colours, and described blast sub-pixel is white sub-pixels.
4. display device according to claim 3, is characterized in that, described blast sub-pixel and other three sub-pixels are oppositely arranged.
5. display device according to claim 1, is characterized in that, described input block in the same way comprises: photoresistance, the first resistance and the second resistance, wherein,
The first end of photoresistance is the first input end in the same way of input block in the same way;
The first end of the second resistance is connected with the second end of photoresistance, and the second end of the second resistance is second input end in the same way of input block in the same way;
The first end of the first resistance is connected with the second end of photoresistance, and the second end of the first resistance is the output terminal in the same way of input block in the same way.
6. display device according to claim 1, is characterized in that, described reverse input block comprises:
3rd resistance, the 5th resistance and the 4th resistance, wherein,
The first end of the 3rd resistance is the reverse first input end of reverse input block;
The first end of the 4th resistance is connected with the second end of the 3rd resistance, and the second end of the 4th resistance is reverse second input end of reverse input block;
The first end of the 5th resistance is connected with the 3rd resistance second end, and the second end of the 5th resistance is the inverse output terminal of reverse input block.
7. display device according to claim 1, is characterized in that, described comparing unit comprises: comparer, the 6th resistance, the 7th resistance, the 8th resistance and triode; Wherein,
Comparer, comprise hold in the same way, backward end and output terminal, it is held in the same way and is connected with the output terminal of input block in the same way, and its backward end is connected with the output terminal of reverse input block;
The first end of the 7th resistance is connected with the output terminal of comparer;
The first end of the 6th resistance is connected with the backward end of comparer, and the second end of the 6th resistance is connected with the second end of the 7th resistance;
The first end of the 8th resistance is connected with the second end of the 7th resistance;
Triode, comprises base stage, emitter and collector, and the base stage of described triode is connected with the second end of the 8th resistance, and launch very comparing unit first output terminal, current collection is comparing unit second output terminal very.
8. display device according to claim 1, is characterized in that, described control module comprises: the 9th resistance and relay, wherein,
The first end of the 9th resistance is control module first input end, and the second end of the 9th resistance is control module second input end;
Relay, comprise first input end, the second input end and output terminal, first input end in the same way, the oppositely reverse first input end of input block of the first end of its first input end and the 9th resistance and in the same way input block are connected, second end and comparing unit second output terminal of its second input end and the 9th resistance are connected, and its output terminal is control module output terminal.
9. the display device according to claim 1 and any one of 5-8, is characterized in that, the voltage of described voltage source is between 2V-8V.
10. display device according to claim 5, is characterized in that, the resistance of described first resistance is between 1 Ω-1000 Ω.
11. display device according to claim 6, is characterized in that, the resistance of described 3rd resistance, the 5th resistance is between 1 Ω-1000 Ω.
12. display device according to claim 7, is characterized in that, the resistance of described 6th resistance, the 7th resistance, the 8th resistance is between 1 Ω-1000 Ω.
13. display device according to claim 8, is characterized in that, the resistance of described 9th resistance is between 1 Ω-1000 Ω.
14. display device according to claim 5, is characterized in that, described second resistance is adjustable resistance, and its resistance is between 1 Ω-30 Ω.
15. display device according to claim 6, is characterized in that, described 4th resistance is adjustable resistance, and its resistance is between 1 Ω-30 Ω.
CN201310120210.XA 2013-04-08 2013-04-08 A kind of display device CN103198806B (en)

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