CN204790249U - Visual display device under sunshine - Google Patents
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- CN204790249U CN204790249U CN201520463890.XU CN201520463890U CN204790249U CN 204790249 U CN204790249 U CN 204790249U CN 201520463890 U CN201520463890 U CN 201520463890U CN 204790249 U CN204790249 U CN 204790249U
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Abstract
The utility model provides a visual display device under sunshine, including display screen, back of the body the light source device and rotatory polarization lamella, the display screen is established between back of the body the light source device and the rotatory polarization lamella, the display screen includes polarizing on, various membrane base plate, liquid crystal layer, array substrate and lower polaroid, the liquid crystal layer lies in between polarizing on and the lower polaroid, various membrane base plate is located between polarizing on and the liquid crystal layer, array substrate lies in between lower polaroid and the liquid crystal layer, the rotatory polarization lamella includes linear polarization piece and wave plate, the wave plate is established between polarizing on and the linear polarization piece, utilize the rotatory polarization lamella to subtract the disturbing reflection of anti -espionage nature reduction environment light, eliminate the rotatory polarization and subtract the colour difference of turning over and introducing through adjusting the pixel gray scale, adjust image contrast and luminance in a poor light simultaneously to realize the visuality of display device under sunshine.
Description
Technical field
The utility model relates to a kind of liquid crystal indicator, display device visual under particularly relating to a kind of sunlight.
Background technology
In the sun due to strong reflected light, the visual effect of liquid crystal display can become very poor.And LCDs is the display solution of at present most main flow.Requirement visual under outdoor display device all possesses sunlight usually.These equipment comprise hand held mobile terminals series products (mobile phone, GPS, POS, barcode scanning machine) and outdoor advertisement machine, ATM, industrial computer series products, relate to face quite extensive.Therefore visual under sunlight is a kind of technology having widespread use and be worth.Under existing solution sunlight, the method for visual problem mainly contains: increase transmission intensity and contrast or utilization or reduce reflection.Increase brightness to realize by promoting liquid crystal display aperture opening ratio or increasing back light source brightness, such as, under a kind of sunlight that patent CN201220560975 discloses visible liquid crystal display screen, have employed this technology; Improve contrast by strengthening viewing effect according to the environmental light brightness dynamic adjustments picture contrast of sensing, show unsharp method and system under the one that patent CN201210421627 discloses effectively solves LCDs sunlight, just have employed such technology; The technology utilizing reflection is typically half reflection and half transmission formula (Transflective) lcd technology, and a part for each sub-pixel of LCDs is designed to reflective by this technology, and other partial design become transmission-type.When applying under sunlight out of doors, reflecting part plays a major role, and the inside that reflected light can enter liquid crystal display becomes controlled light source, strengthens image display effect; Indoor or when applying night, transmissive portion plays a major role, utilize transmitted light to see displaying contents clearly.Under the sunlight of this technology, visual effect is with the obvious advantage, but because reflecting part occupies certain space, the more common liquid crystal display of aperture opening ratio of its transmissive portion is lower, when causing indoor or night to use, power consumption increases the weight of, and often design a new model and all need special design, again die sinking to make liquid crystal display, cost is higher, and model is less and expensive on the market.。Therefore, by contrast, reducing reflection is the mode that under more common enhancing sunlight, visual effect uses, and the realization of anti-reflection technology is mainly at display module outside surface coated with antireflection film.What utilize due to antireflection is interfere the principle disappeared mutually, and need thicknesses of layers to meet the requirement of 0.25 times for anti-reflection wavelength, therefore single antireflection film is often only best to single wavelength effect, needs double-layer reflection reducing coating to realize good look neutral.In addition, best antireflection conditional request antireflection film material refractive index is the square root of incident medium and substrate refractive index product, in visible region if substrate glass refractive index is 1.52, require that antireflecting film refractive index is 1.23, the actual film lowest refractive index that can utilize is 1.28 (MgF2), is therefore difficult to realize zero reflection.A kind of anti-reflection structure that this type of technology such as patent CN201410042064 discloses and antireflective film, the preparation method of the cleaning anti-reflection coating that patent CN201110250081 discloses.Multiple method is applied simultaneously and is contributed to realizing visual effect under better sunlight.Such as at present the way of colleague be the process of touch module plated surface anti-reflective film, adopt full coating technique simultaneously application end according to the ambient light intensity dynamic adjustments backlight illumination of photosensitive sensors perception and picture contrast, promote visual effect under sunlight.
Utility model content
The utility model proposes a kind of new method, by increasing rotatory polarization lamella in existing display device structure, rotatory polarization lamella has anti-reflection characteristic, can reduce sunlight reflection, thus make display device visual in the sun.
In order to realize above-mentioned technique effect, the technical solution adopted in the utility model is:
Display device visual under a kind of sunlight, comprise display screen, backlight arrangement and rotatory polarization lamella, described display screen is located between described backlight arrangement and rotatory polarization lamella, described display screen comprises polaroid, color membrane substrates, liquid crystal layer, array base palte and lower polaroid, described liquid crystal layer is between upper polaroid and lower polaroid, described color membrane substrates is between upper polaroid and liquid crystal layer, described array base palte is between lower polaroid and liquid crystal layer, described rotatory polarization lamella comprises linear polarizer and wave plate, described wave plate is located between described upper polaroid and linear polarizer.
Display device visual under above-mentioned a kind of sunlight, wherein, described display device also comprises touch control layer, and described touch control layer is located between described rotatory polarization lamella and display screen.
Display device visual under above-mentioned a kind of sunlight, wherein, described display device also comprises backlight driving unit, optical sensor, input block, the first processing unit, the second processing unit, described backlight driving unit is connected with the second processing unit with described backlight arrangement respectively, described first processing unit is connected with the second processing unit with described optical sensor, input block respectively, and described second processing unit is connected with described display screen.
Display device visual under above-mentioned a kind of sunlight, wherein, described wave plate is quarter-wave plate.
Display device visual under above-mentioned a kind of sunlight, wherein, described input block is that serial ports inputs and is provided with the input terminal connecting external equipment.
Display device visual under above-mentioned a kind of sunlight, wherein, described first processing unit is MCU chip or the image scaling chip being integrated with MCU, and described first processing unit output interface is LVDS form output interface or MIPI form output interface or RGB form output interface.
Display device visual under above-mentioned a kind of sunlight, wherein, described second processing unit is programming device or asic chip, described programming device is FPGA programming device or CPLD programming device, and described programming device is by described optical sensor image data and each pixel gray level of dynamic adjustments display screen and have the logic function controlling backlight arrangement backlight illumination.
Display device visual under above-mentioned a kind of sunlight, wherein, the light transmission shaft of described linear polarizer and the upper polaroid light transmission shaft of described display screen are in angle of 45 degrees.
Display device visual under above-mentioned a kind of sunlight, wherein, described backlight arrangement is side light emitting type backlight source apparatus or bottom lighting type backlight device.
Display device visual under above-mentioned a kind of sunlight, wherein, described touch control layer is electric resistance touch-control layer or capacitance touching control layer.
The utility model proposes a kind of new method, by increasing rotatory polarization lamella in existing display device structure, rotatory polarization sheet has anti-reflection characteristic and reduces reflected light further, further, rotatory polarization lamella comprises linear polarizer and wave plate, external ambient light forms line polarisation after inciding the linear polarizer in rotatory polarization lamella, wave plate again in rotatory polarization lamella is converted to circularly polarized light, this circularly polarized light is after the texture surface reflectance such as display screen, reflected light is also converted to circularly polarized light, the wave plate of this circularly polarized light again in rotatory polarization lamella and linear polarizer absorb axle light in the same way and cannot pass through, therefore anti-reflective effect can be realized.
Accompanying drawing explanation
By reading the detailed description done non-limiting example with reference to the following drawings, the utility model and feature, profile and advantage will become more obvious.Mark identical in whole accompanying drawing indicates identical part.Deliberately proportionally do not draw accompanying drawing, focus on purport of the present utility model is shown.
The sectional view of display device visual under a kind of sunlight that Fig. 1 provides for the utility model;
The workflow diagram of display device visual under a kind of sunlight that Fig. 2 provides for the utility model;
Fig. 3 is display device light path principle schematic diagram visual under a kind of sunlight of the utility model;
Embodiment
In the following description, give a large amount of concrete details to provide to understand more thoroughly the utility model.But, it is obvious to the skilled person that the utility model can be implemented without the need to these details one or more.In other example, in order to avoid obscuring with the utility model, technical characteristics more well known in the art are not described.
In order to thoroughly understand the utility model, by proposing detailed step and detailed structure in following description, to explain the technical solution of the utility model.Preferred embodiment of the present utility model is described in detail as follows, but except these are described in detail, the utility model can also have other embodiments.
According to the many disadvantages of liquid crystal indicator in prior art, illustrate in the introduction, the display device that the utility model is visual under providing a kind of sunlight, with reference to shown in Fig. 1, display device visual under a kind of sunlight, comprise display screen 700, backlight arrangement 600 and rotatory polarization lamella 703, display screen 700 is located between described backlight arrangement 600 and rotatory polarization lamella 703, display screen 700 comprises polaroid 704, color membrane substrates 705, liquid crystal layer 701, array base palte 706 and lower polaroid 707, liquid crystal layer 701 is between upper polaroid 704 and lower polaroid 707, color membrane substrates 705 is between upper polaroid 704 and liquid crystal layer 701, array base palte 706 is between lower polaroid 707 and liquid crystal layer 701, rotatory polarization lamella 703 comprises linear polarizer 7031 and wave plate 7032, wave plate 7032 is located between polaroid 704 and linear polarizer 7031, the utility model realizes like this, by increasing rotatory polarization lamella 703 in existing display device structure, rotatory polarization sheet has anti-reflection characteristic and reduces reflected light further, further, rotatory polarization lamella 703 comprises linear polarizer 7031 and wave plate 7032, external ambient light forms line polarisation after inciding the linear polarizer 7031 in rotatory polarization lamella 703, wave plate 7032 again in rotatory polarization lamella 703 is converted to circularly polarized light, this circularly polarized light is after the texture surface reflectance such as display screen, reflected light is also converted to circularly polarized light, the wave plate of this circularly polarized light again in rotatory polarization lamella and linear polarizer absorb axle light in the same way and cannot pass through, therefore anti-reflective effect can be realized, thus achieve the visual effect of display device out of doors under sunlight.
In the utility model one optional embodiment, display device also comprises touch control layer 702, touch control layer 702 is located between rotatory polarization lamella 703 and display screen 700, specifically be arranged between rotatory polarization lamella 703 and the upper polaroid 704 of display screen 700, in the utility model, also to illustrate that some display device touch control layer 702 can increase as required or delete, directly not affect the beneficial effect visual in the sun that the utility model brings.
In the utility model one optional embodiment, as shown in Figure 2, display device also comprises backlight driving unit 500, optical sensor 100, input block 200, first processing unit 300, second processing unit 400, backlight driving unit 500 is connected with the second processing unit 400 with backlight arrangement 600 respectively, first processing unit 300 respectively with optical sensor 100, input block 200 is connected with the second processing unit 400, second processing unit 400 is connected with display screen 700, in the present embodiment, the colour cast problem during antireflection of rotatory polarization lamella can be reduced, visual effect under better sunlight is clearly provided, optical sensor 100 can gather ambient light data, input block 200 inputs for serial ports and is provided with the input terminal connecting external equipment, specifically audio frequency can be connected, the input interface of video, also comprise the peripheral hardware input interfaces such as mouse-keyboard, and with the codec chip of interface kit, first processing unit 300 receives the ambient light data that optical sensor 100 collects, be converted into the display format that display unit is supported, then the second processing unit 400 is exported to, first processing unit 300 can possess the function controlling the triggering gathered simultaneously, can by user interface Non-follow control, also threshold value can be set by procedure auto-control, first processing unit 300 can be that common micro-control unit (MCU) or image scaling (Scalar) chip being integrated with MCU and peripheral circuit are formed, first processing unit 300, output interface is LVDS form output interface or MIPI form output interface or RGB form output interface, second processing unit 400 is surround lighting information and the backlight control information of the output of reception first processing unit 300, in conjunction with the RGB transmitance information preset, according to certain algorithm, real-time dynamic conditioning display pixel luma data, output pixel data is to display unit, export backlight control information to backlight driving unit 500, second processing unit 400 can be FPGA, the various programming device such as CPLD, also can be the asic chip being integrated with preset algorithm, and peripheral circuit is formed, programming device is by optical sensor 100 image data and each pixel gray level of dynamic adjustments display screen 700 and have and control backlight and fill the logic function of 600 backlight illuminations, backlight driving unit 500 is driving circuits that backlight fills 600, different drive schemes can be selected according to type of backlight difference, backlight unit 600 is backlights of LCD MODULE, can be CCFL backlight also can be LED backlight, display screen 700 can adopt the various LCDs of prior art, include but not limited to liquid crystal display display mode VA type common at present, IPS type, TN type etc., do not need to be particularly limited to, in the present embodiment, backlight unit 600 and display screen 700, common formation display unit, realize to regulate pixel gray level targetedly eliminating the aberration of rotatory polarization sheet and visuality under enhancing sunlight, need some preconditions, one of them precondition is the RGB transmitance that will record rotatory polarization lamella in advance, RGB transmitance refers to red (R) of the color rete transmission of liquid crystal display, green (G), blue (B) coloured light, increasing the transmitance before and after rotatory polarization lamella 703, such as before not adding rotatory polarization lamella, device RGB transmitance is respectively TR0, TG0, TB0, after adding rotatory polarization lamella, transmitance becomes TR1 respectively, TG1, TB1.Select red, Quan Lv, complete blue test pictures full during measurement respectively, after selected rotatory polarization lamella 703, touch control layer, Panel Type, these parameters can record, as a known conditions of pixel gray level adjustment.In order to eliminate the aberration that rotatory polarization lamella 703 is introduced, pixel gray level can be adjusted to: R1=R0*TR0/TR1, G1=G0*TG0/TG1, B1=B0*TB0/TB1.Wherein R0, G0, B0 are original gray-scale data, R1, G1, B1 are the luma data after adjustment, and another precondition is the acquisition of environment bright degrees of data, and data later for digitizing after opto-electronic conversion are divided into N rank, ambient light intensity is stronger, and corresponding exponent number is higher.Be L (N) by function representation environmental light brightness grade, N is larger, represents ambient brightness higher.According to known environmental light brightness L and pixel original gray-scale P, according to preset algorithm GTG adjustment function F (L, P), corresponding adjustment pixel gray level numerical value.According to known environmental light brightness L, according to preset algorithm backlight adjustment function B (L), corresponding adjustment back light source brightness.The utility model display device signal processing flow is that input original image information exports to the second processing unit 400 by the data after the first processing unit 300 format transformation coupling display unit demand and time sequence information; The simultaneously environmental light brightness that obtains of the first processing unit 300 reception environment optical inductor, and environmental light brightness message digit is turned to L (N) (being divided into N rank by environmental light brightness) and export to the second processing unit 400.Second processing unit 400 judges environmental light brightness according to the environmental light brightness information L (N) received, with each pixel monochrome information P (note: each pixel monochrome information P can by RGB tri-the sub-pixel gray level data acquisition of certain algorithm from this pixel), according to preset algorithm GTG adjustment function F (L, P), corresponding adjustment pixel gray level numerical value is R1=F (L, P) * R0*TR0/TR1, G1=F (L, P) * G0*TG0/TG1, B1=F (L, P) * B0*TB0/TB1.Wherein R0, G0, B0 are original gray-scale data, and R1, G1, B1 are the luma data after adjustment.It is comparatively large that GTG adjustment function F (L, P) should follow L, when P is less, and the policy setting that F (L, P) is larger.Namely when environmental light brightness is comparatively strong, when pixel luminance information is lower, adjusting range is larger.Pixel gray level data message and correlation timing information are exported to liquid crystal display display unit 700 and are shown by rear second processing unit 400 of process.Second processing unit 400 is also according to environmental light brightness information L simultaneously, controls to export backlight illumination and is adjusted to B (L).It is emphasized that when the backlight of display device be can the backlight of Region control time, export backlight illumination and also according to the pixel gray level distribution Pd of each subregion, B (L, Pd) can be adjusted to.In addition, the first processing unit 300 also has the function of the optical sensor switch that controls environment, and controls the function of the second processing unit 400 pixel gray level adjustment functional switch.Regulated by above pixel gray level and backlight, the aberration introduced when can eliminate the antireflection of rotatory polarization sheet, again can according to environmental light brightness dynamic adjustments pixel gray level and backlight illumination, visuality under enhancing sunlight.
In the utility model one optional embodiment, wave plate 7032 is quarter-wave plate, selects quarter-wave plate to have better anti-reflection effect.
In the utility model one optional embodiment, the light transmission shaft of linear polarizer 7031 and upper polaroid 704 light transmission shaft of display screen 700 in angle of 45 degrees, when outside reflected light is by display device, can realize better anti-reflection effect.
In the utility model one optional embodiment, backlight arrangement 600 is side light emitting type backlight source apparatus or bottom lighting type backlight device, and being not limited to is the backlight which kind of technology realizes.
In the utility model one optional embodiment, touch control layer 702 is electric resistance touch-control layer or capacitance touching control layer, being not limited to is the touch control layer which kind of technology realizes, laminating type does not do restriction yet and can be GFF (CoverGlass+ITOFilm+ITOFilm, ITOFilm also can be 1 layer or two-sided), GG (CoverGlass+GlassSensor, ITO can be single or double), the various laminating type such as OGS (Oneglasssolution comprises the various method only realizing touch controllable function with individual glass).
2 specific embodiments are provided to be further elaborated with regard to the utility model below.
Embodiment one
As shown in figures 1 and 3, display device visual under a kind of sunlight, comprise display screen 700, backlight arrangement 600 and rotatory polarization lamella 703, display screen 700 is located between described backlight arrangement 600 and rotatory polarization lamella 703, display screen 700 comprises polaroid 704, color membrane substrates 705, liquid crystal layer 701, array base palte 706 and lower polaroid 707, liquid crystal layer 701 is between upper polaroid 704 and lower polaroid 707, color membrane substrates 705 is between upper polaroid 704 and liquid crystal layer 701, array base palte 706 is between lower polaroid 707 and liquid crystal layer 701, rotatory polarization lamella 703 comprises linear polarizer 7031 and wave plate 7032, wave plate 7032 is located between polaroid 704 and linear polarizer 7031, the utility model realizes like this, by increasing rotatory polarization lamella 703 in existing display device structure, rotatory polarization sheet has anti-reflection characteristic and reduces reflected light further, further, rotatory polarization lamella 703 comprises linear polarizer 7031 and wave plate 7032, external ambient light forms line polarisation after inciding the linear polarizer 7031 in rotatory polarization lamella 703, wave plate 7032 again in rotatory polarization lamella 703 is converted to circularly polarized light, this circularly polarized light is after the texture surface reflectance such as display screen, reflected light is also converted to circularly polarized light, the wave plate of this circularly polarized light again in rotatory polarization lamella and linear polarizer absorb axle light in the same way and cannot pass through, therefore anti-reflective effect can be realized, thus achieve the visual effect of display device out of doors under sunlight, display device also comprises touch control layer 702, touch control layer 702 is located between rotatory polarization lamella 703 and display screen 700, in the utility model, also to illustrate that some display device touch control layer 702 can increase as required or delete, directly do not affect the beneficial effect visual in the sun that the utility model brings, wave plate 7032 is quarter-wave plate, quarter-wave plate is selected to have better anti-reflection effect, the light transmission shaft of linear polarizer 7031 and upper polaroid 704 light transmission shaft of display screen 700 are in angle of 45 degrees, when outside reflected light is by display device, better anti-reflection effect can be realized.
Embodiment two
As Fig. 1, shown in Fig. 2 and Fig. 3, display device visual under a kind of sunlight, comprise display screen 700, backlight arrangement 600 and rotatory polarization lamella 703, display screen 700 is located between described backlight arrangement 600 and rotatory polarization lamella 703, display screen 700 comprises polaroid 704, color membrane substrates 705, liquid crystal layer 701, array base palte 706 and lower polaroid 707, liquid crystal layer 701 is between upper polaroid 704 and lower polaroid 707, color membrane substrates 705 is between upper polaroid 704 and liquid crystal layer 701, array base palte 706 is between lower polaroid 707 and liquid crystal layer 701, rotatory polarization lamella 703 comprises linear polarizer 7031 and wave plate 7032, wave plate 7032 is located between polaroid 704 and linear polarizer 7031, the utility model realizes like this, by increasing rotatory polarization lamella 703 in existing display device structure, rotatory polarization sheet has anti-reflection characteristic and reduces reflected light further, further, rotatory polarization lamella 703 comprises linear polarizer 7031 and wave plate 7032, external ambient light forms line polarisation after inciding the linear polarizer 7031 in rotatory polarization lamella 703, wave plate 7032 again in rotatory polarization lamella 703 is converted to circularly polarized light, this circularly polarized light is after the texture surface reflectance such as display screen, reflected light is also converted to circularly polarized light, the wave plate of this circularly polarized light again in rotatory polarization lamella and linear polarizer absorb axle light in the same way and cannot pass through, therefore anti-reflective effect can be realized, thus achieve the visual effect of display device out of doors under sunlight, display device also comprises touch control layer 702, touch control layer 702 is located between rotatory polarization lamella 703 and display screen 700, in the utility model, also to illustrate that some display device touch control layer 702 can increase as required or delete, directly do not affect the beneficial effect visual in the sun that the utility model brings, display device also comprises backlight driving unit 500, optical sensor 100, input block 200, first processing unit 300, second processing unit 400, backlight driving unit 500 is connected with the second processing unit 400 with backlight arrangement 600 respectively, first processing unit 300 respectively with optical sensor 100, input block 200 is connected with the second processing unit 400, in the present embodiment, the colour cast problem during antireflection of rotatory polarization lamella can be reduced, visual effect under better sunlight is clearly provided, optical sensor 100 can gather ambient light data, input block 200 comprises audio frequency, the input interface of video, also comprise the peripheral hardware input interfaces such as mouse-keyboard, and with the codec chip of interface kit, first processing unit 300 receives the ambient light data that optical sensor 100 collects, be converted into the display format that display unit is supported, then the second processing unit 400 is exported to, first processing unit 300 can possess the function controlling the triggering gathered simultaneously, can by user interface Non-follow control, also threshold value can be set by procedure auto-control, first processing unit 300 can be that common micro-control unit (MCU) and image scaling (Scalar) chip being integrated with MCU and peripheral circuit are formed, second processing unit 400 is surround lighting information and the backlight control information of the output of reception first processing unit 300, in conjunction with the RGB transmitance information preset, according to certain algorithm, real-time dynamic conditioning display pixel luma data, output pixel data is to display unit, export backlight control information to backlight driving unit 500, second processing unit 400 can be FPGA, the various programming device such as CPLD, also can be the asic chip being integrated with preset algorithm, and peripheral circuit is formed, backlight driving unit 500 is driving circuits of backlight, different drive schemes can be selected according to type of backlight difference, backlight unit 600 is backlights of LCD MODULE, can be CCFL backlight also can be LED backlight, display screen 700 can adopt the various LCDs of prior art, include but not limited to liquid crystal display display mode VA type common at present, IPS type, TN type etc., do not need to be particularly limited to, in the present embodiment, backlight unit 600 and display screen 700, common formation display unit, realize to regulate pixel gray level targetedly eliminating the aberration of rotatory polarization sheet and visuality under enhancing sunlight, need some preconditions, one of them precondition is the RGB transmitance that will record rotatory polarization lamella in advance, RGB transmitance refers to red (R) of the color rete transmission of liquid crystal display, green (G), blue (B) coloured light, increasing the transmitance before and after rotatory polarization lamella 703, such as before not adding rotatory polarization lamella, device RGB transmitance is respectively TR0, TG0, TB0, after adding rotatory polarization lamella, transmitance becomes TR1 respectively, TG1, TB1.Red, Quan Lv, complete blue test pictures is entirely selected respectively during measurement, after selected rotatory polarization lamella 703, touch control layer, Panel Type, these parameters can record, as a known conditions of pixel gray level adjustment, in order to eliminate the aberration that rotatory polarization lamella 703 is introduced, pixel gray level can be adjusted to: R1=R0*TR0/TR1, G1=G0*TG0/TG1, B1=B0*TB0/TB1.Wherein R0, G0, B0 are original gray-scale data, R1, G1, B1 are the luma data after adjustment, and another precondition is the acquisition of environment bright degrees of data, and data later for digitizing after opto-electronic conversion are divided into N rank, ambient light intensity is stronger, and corresponding exponent number is higher.Be L (N) by function representation environmental light brightness grade, N is larger, represents ambient brightness higher.According to known environmental light brightness L and pixel original gray-scale P, according to preset algorithm GTG adjustment function F (L, P), corresponding adjustment pixel gray level numerical value.According to known environmental light brightness L, according to preset algorithm backlight adjustment function B (L), corresponding adjustment back light source brightness.The utility model display device signal processing flow is that input original image information exports to the second processing unit 400 by the data after the first processing unit 300 format transformation coupling display unit demand and time sequence information; The simultaneously environmental light brightness that obtains of the first processing unit 300 reception environment optical inductor, and environmental light brightness message digit is turned to L (N) (being divided into N rank by environmental light brightness) and export to the second processing unit 400.Second processing unit 400 judges environmental light brightness according to the environmental light brightness information L (N) received, with each pixel monochrome information P (note: each pixel monochrome information P can by RGB tri-the sub-pixel gray level data acquisition of certain algorithm from this pixel), according to preset algorithm GTG adjustment function F (L, P), corresponding adjustment pixel gray level numerical value is R1=F (L, P) * R0*TR0/TR1, G1=F (L, P) * G0*TG0/TG1, B1=F (L, P) * B0*TB0/TB1.Wherein R0, G0, B0 are original gray-scale data, and R1, G1, B1 are the luma data after adjustment.It is comparatively large that GTG adjustment function F (L, P) should follow L, when P is less, and the policy setting that F (L, P) is larger.Namely when environmental light brightness is comparatively strong, when pixel luminance information is lower, adjusting range is larger.Pixel gray level data message and correlation timing information are exported to liquid crystal display display unit 700 and are shown by rear second processing unit 400 of process.Second processing unit 400 is also according to environmental light brightness information L simultaneously, controls to export backlight illumination and is adjusted to B (L).It is emphasized that when the backlight of display device be can the backlight of Region control time, export backlight illumination and also according to the pixel gray level distribution Pd of each subregion, B (L, Pd) can be adjusted to.In addition, the first processing unit 300 also has the function of the optical sensor switch that controls environment, and controls the function of the second processing unit 400 pixel gray level adjustment functional switch.Regulated by above pixel gray level and backlight, the aberration introduced when can eliminate the antireflection of rotatory polarization sheet, again can according to environmental light brightness dynamic adjustments pixel gray level and backlight illumination, visual under strengthening sunlight, wave plate 7032 is quarter-wave plate, quarter-wave plate is selected to have better anti-reflection effect, the light transmission shaft of linear polarizer 7031 and upper polaroid 704 light transmission shaft of display screen 700 are in angle of 45 degrees, when outside reflected light is by display device, better anti-reflection effect can be realized, backlight arrangement 600 is side light emitting type backlight source apparatus or bottom lighting type backlight device, be not limited to be the backlight touch control layer 702 which kind of technology realizes is electric resistance touch-control layer or capacitance touching control layer, being not limited to is the touch control layer which kind of technology realizes, laminating type does not do restriction yet and can be GFF (CoverGlass+ITOFilm+ITOFilm, ITOFilm also can be 1 layer or two-sided), GG (CoverGlass+GlassSensor, ITO can be single or double), OGS (Oneglasssolution, comprise the various method only realizing touch controllable function with individual glass) etc. various laminating type, in the present embodiment by LVDS interface output pixel data and correlation timing information to display unit, be not limited to and adopt LVDS interface transmission pixel data, can be various data-interface forms, include but not limited to LVDS, MIPI, RGB etc., the present embodiment display device signal processing flow exports to the second processing unit 400 for inputting after original image information mates display unit demand by the first processing unit 300 format transformation, the environmental light brightness of the first processing unit 300 reception environment optical inductor acquisition simultaneously, and environmental light brightness message digit is turned to L (N) and (be divided into N rank by environmental light brightness, in the present embodiment, N is for be divided into 256 rank from 0 to 255, setting L=N/256) export to the second processing unit 400.Second processing unit 400 judges environmental light brightness according to the environmental light brightness information L (N) received, with each pixel monochrome information P, each pixel luminance information is set as its sub-pixel GTG sum is divided by three in the present embodiment, i.e. P=(R+G+B)/3, if RGB is 8bit, then the numerical value of P is from 0-255.According to preset algorithm GTG adjustment function F (L, P), corresponding adjustment pixel gray level numerical value is:
R1＝F(L,P)*R0*TR0/TR1，G1＝F(L,P)*G0*TG0/TG1；
B1＝F(L,P)*B0*TB0/TB1。
Wherein R0, G0, B0 are original gray-scale data, and R1, G1, B1 are the luma data after adjustment.It is comparatively large that GTG adjustment function F (L, P) should follow L, when P is less, and the policy setting that F (L, P) is larger.Such as, can set F (L, P)=1+c*L* (255-P)/255 in the present embodiment, wherein c is positive constant.Namely when environmental light brightness is comparatively strong, when pixel luminance information is lower, adjusting range is larger.F (L, P) also can be set as other forms as required, only illustrates here.Second processing unit 400 is also according to environmental light brightness information L simultaneously, control to export backlight illumination and be adjusted to B (L), such as L is set as 256 rank, and backlight B (L) also can be set as 256 rank equally, according to the exponent number of L, export the backlight of identical exponent number.Regulated by above pixel gray level and backlight, the aberration introduced when can eliminate the antireflection of rotatory polarization sheet, again can according to environmental light brightness dynamic adjustments pixel gray level and backlight illumination, visual under strengthening sunlight, the colour cast problem during antireflection of rotatory polarization lamella can be reduced in the present embodiment, thus visual effect better under achieving sunlight out of doors.
The beneficial effects of the utility model:
The utility model proposes a kind of new method, by increasing rotatory polarization lamella in existing display device structure, rotatory polarization sheet has anti-reflection characteristic and reduces reflected light further, further, rotatory polarization lamella comprises linear polarizer and wave plate, external ambient light forms line polarisation after inciding the linear polarizer in rotatory polarization lamella, wave plate again in rotatory polarization lamella is converted to circularly polarized light, this circularly polarized light is after the texture surface reflectance such as display screen, reflected light is also converted to circularly polarized light, the wave plate of this circularly polarized light again in rotatory polarization lamella and linear polarizer absorb axle light in the same way and cannot pass through, therefore anti-reflective effect can be realized.For application under liquid crystal indicator outdoors sunlight opens new method, technology of the present utility model can be widely used in the equipment that GPS, mobile phone, POS etc. have application demand under outdoors sunlight.
Above preferred embodiment of the present utility model is described.It is to be appreciated that the utility model is not limited to above-mentioned particular implementation, the equipment wherein do not described in detail to the greatest extent and structure are construed as to be implemented with the common mode in this area; Any those of ordinary skill in the art, do not departing under technical solutions of the utility model ambit, the Method and Technology content of above-mentioned announcement all can be utilized to make many possible variations and modification to technical solutions of the utility model, or being revised as the Equivalent embodiments of equivalent variations, this does not affect flesh and blood of the present utility model.Therefore, every content not departing from technical solutions of the utility model, according to technical spirit of the present utility model to any simple modification made for any of the above embodiments, equivalent variations and modification, all still belongs in the scope of technical solutions of the utility model protection.
Claims (10)
1. display device visual under a sunlight, it is characterized in that, comprise display screen, backlight arrangement and rotatory polarization lamella, described display screen is located between described backlight arrangement and rotatory polarization lamella, described display screen comprises polaroid, color membrane substrates, liquid crystal layer, array base palte and lower polaroid, described liquid crystal layer is between upper polaroid and lower polaroid, described color membrane substrates is between upper polaroid and liquid crystal layer, described array base palte is between lower polaroid and liquid crystal layer, described rotatory polarization lamella comprises linear polarizer and wave plate, described wave plate is located between described upper polaroid and linear polarizer.
2. display device visual under a kind of sunlight as claimed in claim 1, it is characterized in that, described display device also comprises touch control layer, and described touch control layer is located between described rotatory polarization lamella and display screen.
3. display device visual under a kind of sunlight as claimed in claim 1, it is characterized in that, described display device also comprises backlight driving unit, optical sensor, input block, the first processing unit, the second processing unit, described backlight driving unit is connected with the second processing unit with described backlight arrangement respectively, described first processing unit is connected with the second processing unit with described optical sensor, input block respectively, and described second processing unit is connected with described display screen.
4. display device visual under a kind of sunlight as claimed in claim 1, is characterized in that, described wave plate is quarter-wave plate.
5. display device visual under a kind of sunlight as claimed in claim 3, is characterized in that, described input block is that serial ports inputs and is provided with the input terminal connecting external equipment.
6. display device visual under a kind of sunlight as claimed in claim 3, it is characterized in that, described first processing unit is MCU chip or the image scaling chip being integrated with MCU, and described first processing unit output interface is LVDS form output interface or MIPI form output interface or RGB form output interface.
7. display device visual under a kind of sunlight as claimed in claim 3, it is characterized in that, described second processing unit is programming device or asic chip, described programming device is FPGA programming device or CPLD programming device, and described programming device is by described optical sensor image data and each pixel gray level of dynamic adjustments display screen and have the logic function controlling backlight arrangement backlight illumination.
8. display device visual under a kind of sunlight as described in as arbitrary in claim 1-7, it is characterized in that, the light transmission shaft of described linear polarizer and the upper polaroid light transmission shaft of described display screen are in angle of 45 degrees.
9. display device visual under a kind of sunlight as claimed in claim 8, is characterized in that, described backlight arrangement is side light emitting type backlight source apparatus or bottom lighting type backlight device.
10. display device visual under a kind of sunlight as claimed in claim 2, is characterized in that, described touch control layer is electric resistance touch-control layer or capacitance touching control layer.
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| CN201520463890.XU CN204790249U (en) | 2015-06-30 | 2015-06-30 | Visual display device under sunshine |
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| CN201520463890.XU CN204790249U (en) | 2015-06-30 | 2015-06-30 | Visual display device under sunshine |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017152446A1 (en) * | 2016-03-11 | 2017-09-14 | 武汉华星光电技术有限公司 | Liquid crystal display panel and device |
| CN108351551A (en) * | 2016-04-18 | 2018-07-31 | 日东电工株式会社 | Liquid crystal display device |
| WO2019042008A1 (en) * | 2017-09-04 | 2019-03-07 | 深圳Tcl新技术有限公司 | Polarizer and liquid crystal display screen |
| CN112415803A (en) * | 2019-08-20 | 2021-02-26 | 京东方科技集团股份有限公司 | Liquid crystal display panel, display method thereof and display device |
-
2015
- 2015-06-30 CN CN201520463890.XU patent/CN204790249U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017152446A1 (en) * | 2016-03-11 | 2017-09-14 | 武汉华星光电技术有限公司 | Liquid crystal display panel and device |
| CN108351551A (en) * | 2016-04-18 | 2018-07-31 | 日东电工株式会社 | Liquid crystal display device |
| WO2019042008A1 (en) * | 2017-09-04 | 2019-03-07 | 深圳Tcl新技术有限公司 | Polarizer and liquid crystal display screen |
| CN112415803A (en) * | 2019-08-20 | 2021-02-26 | 京东方科技集团股份有限公司 | Liquid crystal display panel, display method thereof and display device |
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