CN107132692A - Display device - Google Patents
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- CN107132692A CN107132692A CN201710305272.6A CN201710305272A CN107132692A CN 107132692 A CN107132692 A CN 107132692A CN 201710305272 A CN201710305272 A CN 201710305272A CN 107132692 A CN107132692 A CN 107132692A
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- 238000001228 spectrum Methods 0.000 claims abstract description 41
- 239000000463 material Substances 0.000 claims description 20
- 239000000843 powder Substances 0.000 claims description 10
- 230000001360 synchronised effect Effects 0.000 claims description 7
- 229910003202 NH4 Inorganic materials 0.000 claims description 3
- 229910052792 caesium Inorganic materials 0.000 claims description 3
- 229910052744 lithium Inorganic materials 0.000 claims description 3
- 229910052700 potassium Inorganic materials 0.000 claims description 3
- 229910052701 rubidium Inorganic materials 0.000 claims description 3
- 229910052708 sodium Inorganic materials 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 239000013078 crystal Substances 0.000 description 11
- 239000002096 quantum dot Substances 0.000 description 10
- 230000000694 effects Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 8
- 238000002474 experimental method Methods 0.000 description 4
- 238000009877 rendering Methods 0.000 description 4
- 238000005286 illumination Methods 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 208000003464 asthenopia Diseases 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 208000030533 eye disease Diseases 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000010606 normalization Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133624—Illuminating devices characterised by their spectral emissions
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Led Device Packages (AREA)
Abstract
A display device comprises a display panel and a light source module. The light source module is arranged on one side of the display panel. The light source module provides light source to present display light after passing through the display panel. The spectrum of the display light includes at least one of a first waveform, a second waveform, and a third waveform having different peak wavelengths. The first waveform has a first peak wavelength λ 1 and λ 1 is in a range of 500nm to 570 nm. The second waveform has a second peak wavelength λ 2 and λ 2 is in a range of 590nm to 700 nm. The first waveform has a full width at half maximum FWHM1 and conforms to equation 1: FWHM1≤‑15970λv 2+29486λv-13533, wherein λ v ═ λ 1/λ 2.
Description
Technical field
The invention relates to a kind of electronic installation, and in particular to a kind of display device.
Background technology
As display device becomes increasingly popular, people are gradually increased using the frequency of display device and time.Use display
During device, the display light launched by display device can be directly entered human eye, to allow user to watch the shadow shown by display device
Picture.In general, the energy that the display light sent by display device enters human eye is connect when being often higher than user's viewing paper
The energy received.This is also that user watches one of the reason for being easier fatigue when image relatively watches paper using display device.
Particularly, the energy of display light into human eye is bigger, the easier fatigue of eyes of user, even results in the eye disease of user
Become.Therefore, in addition to the improvement in image quality and device quality, degree of fatigue when can slow down user's viewing picture is also
The improvement of display device needs the factor considered.
The content of the invention
The present invention provides a kind of display device, can maintain preferable display effect and mitigate user's viewing display picture
When produce fatigue degree.
The display device of one embodiment of the invention includes display panel and light source module.Light source module is arranged at display panel
Side.Light source module, which is provided after light source passes through display panel, shows display light.Showing the frequency spectrum of light includes peak wavelength not
At least one of same first waveform, the second waveform and the 3rd waveform.First waveform has the first peak wavelength, the first peak value ripple
A length of λ 1 and λ 1 is in the range of 500nm to 570nm.Second waveform has the second peak wavelength, and the second peak wavelength is λ 2 and λ
2 in the range of 590nm to 700nm.The halfwidth of the first waveform is FWHM1And coincidence formula 1：FWHM1≤-15970
λv 2+29486λv- 13533, wherein λvThe λ 2 of=λ 1/.
In one embodiment of this invention, 0.852<λv<0.894。
In one embodiment of this invention, the halfwidth of the second waveform is FWHM2And coincidence formula 2：FWHM2≤-15970
λv 2+29486λv-13533。
In one embodiment of this invention, FWHM1With FWHM2Difference be less than 5nm.
In one embodiment of this invention, 0.866<λv<0.886, the halfwidth of the second waveform is FWHM2, then FWHM1<
59.4nm and FWHM2<59.4nm.
In one embodiment of this invention, 0.862<λv<0.868, the halfwidth of the second waveform is FWHM2, then FWHM1<
32.7nm and FWHM2<32.7nm.
In one embodiment of this invention, the halfwidth of the second waveform is FWHM2, and FWHM2 is equal to FWHM1.
In one embodiment of this invention, light source module includes multiple light-emitting components.Light-emitting component be suitable to send light source and
Light-emitting component includes three wave length type light-emitting components.
In one embodiment of this invention, three wave length type light-emitting components include quantum point type light-emitting diode, fluorescence
Powder type light-emitting diode, chip type light emitting diode element or its combination.
In one embodiment of this invention, display panel include multiple first sub-pixels, multiple second sub-pixels with it is multiple
3rd sub-pixel.First sub-pixel, the second sub-pixel and the 3rd sub-pixel are arranged in array, and the first sub-pixel, the second sub- picture
Element is suitable to synchronous or asynchronous unlatching to show the display light with the 3rd sub-pixel.
In one embodiment of this invention, display panel makes display light include first wave by the first sub-pixel is opened
Shape.
In one embodiment of this invention, display panel makes display light include the second ripple by the second sub-pixel is opened
Shape.
In one embodiment of this invention, display panel makes display light include the 3rd ripple by the 3rd sub-pixel is opened
Shape.
In one embodiment of this invention, display panel further includes multiple 4th sub-pixels.First sub-pixel, the second sub- picture
Element, the 3rd sub-pixel and the 4th sub-pixel are arranged in array, and the first sub-pixel, the second sub-pixel, the 3rd sub-pixel and the 4th
Sub-pixel is suitable to synchronous or asynchronous unlatching to show display light.
In one embodiment of this invention, display panel makes display light include first wave by the 4th sub-pixel is opened
Shape, the second waveform and the 3rd waveform.
In one embodiment of this invention, the 3rd waveform has the 3rd peak wavelength, and the 3rd peak wavelength is λ 3 and λ 3 exists
In the range of 440nm to 470nm.
The display device of one embodiment of the invention includes display panel and light source module.Light source module is arranged at display panel
Side.Light source module, which is provided after light source passes through display panel, shows display light.Showing the frequency spectrum of light includes peak wavelength not
At least one of same first waveform, the second waveform and the 3rd waveform.First waveform has the first peak wavelength, the first peak value ripple
A length of λ 1C and λ 1C are in the range of 500nm to 570nm.Second waveform has multiple peak wavelengths.The peak value ripple of second waveform
Long the maximum is in the range of 590nm to 700nm.The halfwidth of first waveform is Fc and Fc coincidence formulas 3:Fc≤-0.16λ1C 2
+181.2λ1C-51212。
In one embodiment of this invention, the second waveform has three peak wavelengths.
In one embodiment of this invention, light source module includes an at least fluorescent material type light-emitting diode.Fluorescent material
The light of the waveform of type light-emitting diode second.
In one embodiment of this invention, the fluorescent material shape light-emitting diode includes red fluorescence powder, and red
The chemical formula of fluorescent material is A2(MF6):Mn4+, wherein A is Li, Na, K, Rb, Cs, NH4One of which, and Ge that M is, Si,
The combination of Sn, Ti, Zr one of which either above-mentioned element.
Based on above-mentioned, the display device of the embodiment of the present invention, adjusted, showed with reaching using the peak wavelength for showing light
The relatively low display light of the pleasing to the eye energy of unit.Meanwhile, the display device of the embodiment of the present invention under the pleasing to the eye energy of relatively low unit still
Preferable color rendering and display quality can be maintained.
For the features described above and advantage of the present invention can be become apparent, special embodiment below, and coordinate institute's accompanying drawings
It is described in detail below.
Brief description of the drawings
Fig. 1 is to regard effect functional arrangement.
Fig. 2 is the schematic diagram of the display device of one embodiment of the invention.
The overall spectrum for the display light that Fig. 3 to Fig. 5 is sent by display device, the wherein longitudinal axis are luminous intensity through normalization
Intensity percent obtained by afterwards, and transverse axis is emission wavelength.
The upper schematic diagram of an embodiment of display panel in the display device that Fig. 6 is Fig. 2.
The upper schematic diagram of another embodiment of display panel in the display device that Fig. 7 is Fig. 2.
Wherein, reference：
10：Depending on effect function distributing line
100：Display device
110、110A、110B：Display panel
112：First sub-pixel
114：Second sub-pixel
116：3rd sub-pixel
118：4th sub-pixel
120：Light source module
122：Light-emitting component
FWHM1、FWHM2、FWHM3：Halfwidth
L：Show light
S：Light source
SP1、SP2、SP3：Frequency spectrum
W1、W1A、W1B、W1C：First waveform
W2、W2A、W2B、W2C：Second waveform
W3、W3A、W3B、W3C：3rd waveform
λ1、λ1C：First peak wavelength
λ2：Second peak wavelength
λ3：3rd peak wavelength
Embodiment
Because human eye has different acutenesses for the light of different wave length, the actual luminous intensity of display device is simultaneously non-straight
It is reversed to mirror the brightness that human eye is experienced.Therefore, International Commission on Illumination (INTERNATIONAL COMMISSION ON
ILLUMINATION, CIE) disclose empirically obtain regard effect function (as shown in Figure 1) as brightness calculation standard
Function.
Specifically, brightness (luminance) is the anti-of the luminous or irradiated object surface that represents human eye to illuminator
Light is penetrated into the actual impression degree of the luminous intensity of human eye.The standard issued according to International Commission on Illumination (CIE), one lights
The brightness of device for this light-emitting device luminous intensity frequency spectrum with regarding imitate function be multiplied after inner product, and brill be lumen
(lumen, lm).For the article for a reflection light that do not light itself, then the luminous intensity frequency of ambient lighting can be used
Spectrum makes the luminous intensity frequency spectrum into human eye with the product of the reflectivity of article, and to enter the luminous intensity frequency spectrum of human eye with regarding
Inner product after effect function is multiplied watches the brightness that such article is experienced to calculate human eye.In addition, according to the calculating of brightness
Mode understands that the luminous intensity sum total and the ratio of brightness in frequency spectrum under each wavelength into human eye can be considered as the list of per unit brightness
The pleasing to the eye energy in position (unit for watt/lumen, W/lm).
Visible reflectance is watched using under colour temperature 5500K ambient lighting as 75% to 85% paper, resulting list
The pleasing to the eye energy substantially 3.15 × 10 in position-3Watt/lumen (W/lm).In comparison, the display device on market today is (with liquid crystal
Exemplified by showing device) the pleasing to the eye energy of unit of display light be about 3.4 × 10-3Watt/lumen (W/lm) to 4.01 × 10-3Watt/lumen
(W/lm) even more high.It follows that viewing display device picture with viewing printed on paper both information in comparison,
Human eye experiences fatigue phenomenon when watching the picture of display device is more obvious.
Effect function distributing line 10 is regarded from Fig. 1, the peak wavelength depending on imitating function substantially falls at 555nm, and by
Successively decrease at 555nm to both sides, that is, normal distribution (normal distribution) type function.According to regarding effect function
Distributing line 10, under identical luminous intensity, the brighter display that the wavelength of light can be experienced closer to 555nm, human eye.Therefore,
If the pleasing to the eye energy reduction of the unit of display device is maintained into the brightness that human eye is watched again, the display of display device is adjusted
The spectrum distribution of light is a kind of adoptable mode.
Table one is the result of the pleasing to the eye energy of unit of the display light of the gained after experiment.The result of table one is in display device
Light source module in use the light-emitting component of different size, and measure the unit calculated after the intensity spectrum of display light and enter
Eye energy.Here, the intensity spectrum of display light is made up of three waveforms, therefore with three crests, its peak wavelength is by being short to
Length can represent blue light waveform, green glow waveform and red waveforms respectively.Each form lists three numerals in first column of table one, this
Three numerals represent the peak wavelength of these three waveforms respectively.In the experiment of table one, the peak wavelength of blue light waveform is fixed as
450nm, the peak wavelength of green glow waveform includes 530nm, 535nm, 540nm, 545nm, 550nm and 555nm, and red waveforms
Peak wavelength includes 630nm, 625nm, 620nm, 615nm and 610nm.In addition, in the experiment of table one, can be by luminous member
The selection of part so that green glow waveform and the halfwidth of red waveforms are all identical, and the FWHM of first row is to be expressed as green glow waveform
With halfwidth size of the red waveforms in each experimental example, it is in 20nm~60nm.
By table one it is known that the peak wavelength and halfwidth of the pleasing to the eye energy of unit and red waveforms and green glow waveform have
Close.When the peak wavelength of red waveforms and green glow waveform is fixed, the halfwidth of red waveforms and green glow waveform is bigger, and unit is pleasing to the eye
Energy is bigger.When the halfwidth of red waveforms and green glow waveform is fixed, the pleasing to the eye energy of unit can be with green glow waveform and red waveforms
Peak wavelength compare value changes.After statistics, the halfwidth that can obtain green glow waveform is FWHMGMeet following equation：FWHMG≤-
15970λv 2+29486λvWhen -13533, the pleasing to the eye energy of unit is not more than 3.15 × 10-3Watt/lumen (W/lm), wherein λvFor green glow
The peak wavelength ratio of waveform and red waveforms, that is to say, that the peak wavelength of green glow waveform is λ G, the peak value ripple of red waveforms
During a length of λ R, λv=λ G/ λ R.Meanwhile, the halfwidth FWHM of red waveformsRMeet following equation：FWHMR≤-15970λv 2+
29486λvWhen -13533, the pleasing to the eye energy of unit is not more than 3.15 × 10-3Watt/lumen (W/lm).Therefore, display device can be according to
Designed according to above-mentioned relation formula to mitigate human eye viewing sense of fatigue, allow user comfortably to watch picture.
Fig. 2 is the schematic diagram of the display device of one embodiment of the invention.Fig. 2 is refer to, display device 100 includes display surface
Plate 110 and light source module 120, wherein light source module 120 are arranged at the side of display panel 110, and light source module 120 is provided
Light source S pass through display light L showed after display panel 110.Light source module 120, which is one, can provide the member of area source
Part, can be realized using the kenel of direct type backlight module or be realized using the kenel of side incident backlight module.
Fig. 2 is that direct type backlight module is illustrated as example using light source module 120, but is not limited.
Light source module 120 includes multiple light-emitting components 122, and light-emitting component 122 light emission direction towards display panel 110
To provide light source S.Light source module 120 can further include the optical sheet such as diffusion sheet, prismatic lens, blast piece (not illustrating), and optics
Piece can be arranged between display panel 110 and light-emitting component 122.In other embodiments, if light source module 120 is using side
The kenel of face light-entering type backlight module is implemented, then light source module 120 can include a light guide plate, and it has adjacent incidence surface
With exiting surface.Now, the light emission direction of light-emitting component 122 can towards light guide plate incidence surface, and the exiting surface of light guide plate can
With towards display panel 110.
In one embodiment, light-emitting component 122 is to send light source S, and light source S shows after display panel 110
The display light L come overall spectrum is as shown in Figure 3.From the figure 3, it may be seen that display light L overall spectrum includes first waveform W1, second
Waveform W2 and the 3rd waveform W3.The first peak wavelength that first waveform W1 has is the scope of λ 1 and λ 1 in 500nm to 570nm
It is interior.The second peak wavelength that second waveform W2 has is λ 2 and λ 2 is in the range of 590nm to 700nm.3rd waveform W3 has
The 3rd peak wavelength be λ 3 and λ 3 in the range of 440nm to 470nm.Consequently, it is possible to which first waveform W1 wide cause is presented
Go out green glow, the second waveform W2 wide cause shows feux rouges and the 3rd waveform W3 wide cause shows blue light.Display device 110
Display light L can by first waveform W1, the second waveform W2 and the 3rd waveform W3 at least one or and its constitute to show
The picture color needed.
For example, when showing white picture, the display light L of display device 100 can be by first waveform W1, the second waveform
W2 is collectively constituted with the 3rd waveform W3 three；When showing blue picture, the display light L of display device 100 can be by the 3rd waveform
W3 is constituted.During display green picture, the display light L of display device 100 can be made up of first waveform W1.The red picture of display
When, the display light L of display device 100 is then made up of the second waveform W2.When showing purple picture, the display light L of display device 100
Then it is made up of the second waveform W2 and the 3rd waveform W3.When showing yellow picture, the display light L of display device 100 is then by first wave
Shape W1 and the second waveform W2 is constituted.
In the present embodiment, in order that display device 100 provides more comfortable visual effect, first waveform can be adjusted
W1 halfwidth FWHM1, the second waveform W2 halfwidth FWHM2With the 3rd waveform W3 halfwidth FWHM3At least one of and/
At least one of or the first peak value wavelength X 1 of adjustment, the second peak wavelength λ 2 and the first peak value wavelength X 3.Specifically, according to before
The experimental result of table one is stated, the pleasing to the eye energy of unit that to make the display light L of display device 100 has is not more than 3.15 × 10-3Watt/
Lumen (W/lm), first waveform W1 halfwidth FWHM1It may be configured as coincidence formula 1：FWHM1≤≤-15970λv 2+29486λv-
13533, wherein λvThe λ 2 of=λ 1/.Meanwhile, the second waveform W2 halfwidth FWHM2It may be configured as coincidence formula 2, wherein formula 2：
FWHM2≤-15970λv 2+29486λv-13533。
In general, λvThe too big color rendering that may cause display device 100 is not good, and λvIt is too small to be not easy to meet low list
The demand of the pleasing to the eye energy in position.For example, in λv>When 0.894, due to the first waveform W1 of green glow is presented with being presented the of feux rouges
The color that two waveform W2 are presented is closer to each other, and the NTSC coverage rates of display device 100 can be less than 80%, and this will be because of color rendering
It is not good and be unable to reach nature and display effect true to nature.In λv<When 0.852, the experimental result through table one is learnt, display light L
The pleasing to the eye energy of unit generally all can be higher than 3.15 × 10-3Watt/lumen (W/lm).Therefore, in one embodiment, one can also be entered
Step selection is with 0.852<λv<0.894 imposing a condition as display device.
For example, λ 1 is 536nm and when λ 2 is 629nm, λvFor 0.852.In such first peak value wavelength X 1 and
Under two peak wavelength λ 2, in order to reach the pleasing to the eye energy of preferable unit, FWHM1With FWHM2Need all for 1nm or so.λ 1 is
When 543nm and λ 2 are 620nm, λvOr 0.852.Under such first peak value wavelength X 1 and the second peak wavelength λ 2, it is
Reach the pleasing to the eye energy FWHM of preferable unit1With FWHM2Need all to be below 30nm.In addition, λ 1 is 550nm and λ 2 is 615nm
When, λvFor 0.894.Under such first peak value wavelength X 1 and the second peak wavelength λ 2, in order to reach that preferable unit is pleasing to the eye
Energy, FWHM1With FWHM2Need all to be below 64nm.
In other embodiments, it may be selected to allow 0.866<λv<0.886, FWHM1<59.4nm and FWHM2<59.4nm.Now,
λ 1 can be 540nm to 545nm, and λ 2 can be 612nm to 625nm.In still another embodiment, it may be selected to allow 0.862<λv
<0.868, FWHM1<32.7nm and FWHM2<32.7nm.Now, λ 1 can be 544nm to 546nm, and λ 2 can be for 629nm extremely
631nm.Under above-mentioned various condition and ranges, during 100 display picture of display device, the display light L pleasing to the eye energy of unit can not
Higher than 3.15 × 10-3Watt/lumen (W/lm).
Fig. 2 display device 100 can select the luminous member in light source module 120 according to the pleasing to the eye energy of the unit of target
Part 122, so that display light L frequency spectrum meets above-mentioned various conditions.Specifically, light-emitting component 122 can be three wave length types hair
Optical element, and three wave length type light-emitting components can include quantum point type light-emitting diode, fluorescent material type light emitting diode member
Part, chip type light emitting diode element or its combination.Display device is used as when using same type of light-emitting diode
During 100 light-emitting component 122, the halfwidth FWHM in Fig. 31With FWHM2Difference can be less than 5nm, or even halfwidth FWHM1
With FWHM2It can be equal to each other, but be not limited.In addition, in one embodiment, in halfwidth FWHM1Or FWHM2It is more than
During 5nm, the 3rd waveform W3 halfwidth FWHM3Can be 15nm to 30nm.In addition, in halfwidth FWHM1Or FWHM2Less than 5nm
When, the 3rd waveform W3 halfwidth FWHM3Can be again smaller than 5nm.The light-emitting component of the less waveform of halfwidth is, for example, laser
Element, but be not limited.
Quantum point type light-emitting diode includes light-emitting diode chip for backlight unit and with light emitting diode chip package one
The quantum dot crystal risen.Light-emitting diode chip for backlight unit adopts electroluminescent mode and emits beam, and light-emitting diode chip for backlight unit is sent
After light irradiation quantum dot crystal, quantum dot crystal can also emit beam.In general, the light that light-emitting diode chip for backlight unit is sent can be with
It is blue light or ultraviolet light.Size (or diameter) size of quantum dot crystal may decide that the luminous frequency spectrum of light-emitting component, and amount
The peak wavelength of the smaller frequency spectrum that then lights of size of son point crystal is smaller.It therefore, it can determine according to the peak wavelength needed
The size of quantum dot crystal.
Fluorescent material type light-emitting diode includes light-emitting diode chip for backlight unit and with light emitting diode chip package one
The fluorescent material risen.Light-emitting diode chip for backlight unit is adopted electroluminescent mode and emitted beam, and the light irradiation of light-emitting diode chip for backlight unit is glimmering
After light powder, fluorescent material can send the light of different wave length.In general, the light that light-emitting diode chip for backlight unit is sent can be blue light or
Ultraviolet light.The material of fluorescent material may decide that the luminous frequency spectrum of light-emitting component.It therefore, it can determine according to the peak wavelength needed
Determine the species of fluorescent material.In one embodiment, can arrange in pairs or groups red fluorescence powder and green emitting phosphor blue light-emitting diode core
Piece is packaged together to be used as white light emitting element.Now, single light-emitting component can be just sent with three peak wavelengths
The light of frequency spectrum.Furthermore it is possible to select using three light-emitting components as one group, three light-emitting components are allowed respectively to provide different peak values
The light of wavelength (different colours).
Chip type light emitting diode element can be the light sent using light-emitting diode chip for backlight unit itself as light source.Lift
For example, the light-emitting component 122 applied to Fig. 2 display device 100 can be made up of three kinds of chip type light emitting diode elements,
It include with the chip type light emitting diode elements of red light chips, the chip type light emitting diode element with blue chip with
And the chip type light emitting diode element with green glow chip.The luminous frequency spectrum of chip type light emitting diode element is by its chip sheet
The lattice structure of body is determined.At this point it is possible to which peak wavelength as needed selects corresponding chip type light emitting diode member
Part.
The method of the pleasing to the eye energy of unit of the display light of adjustment display device illustrated below.But, illustrate below only
It is that citing is used, is not limited to the concrete practice mode of the present invention.Fig. 4 is the overall spectrum of the display light of display device
Schematic diagram.In one embodiment, the display light L of display device 100 has the first frequency spectrum SP1, wherein the first frequency spectrum SP1 includes the
One waveform W1A, the second waveform W2A and the 3rd waveform W3A.Specifically, the first quantum point type is used in this display device 100
Light-emitting diode provides the light with first waveform W1A, is provided using the second quantum point type light-emitting diode
Light with the second waveform W2A, and the light with the 3rd waveform W3A is provided using chip type light emitting diode element.First
The size (diameter) of the quantum dot crystal of quantum point type light-emitting diode is 2.49nm, and the second quantum point type light-emitting diodes
The size (diameter) of the quantum dot crystal of tube elements is 3.89nm.In this way, first waveform W1A peak wavelength is 528nm, second
Waveform W2A peak wavelength is 630nm, and the 3rd waveform W3A peak wavelength is 460nm.The first frequency spectrum SP1 is computed to obtain
The pleasing to the eye energy of unit of the display light of this display device is 3.74 × 10-3Watt/lumen (W/lm), this is more than expected 3.15 ×
10-3Watt/lumen (W/lm).Therefore, this display device needs further amendment and adjustment.
In one embodiment, adjusting the mode of above-mentioned display device 100 is included the first quantum point type light emitting diode member
The size (diameter) of the quantum dot crystal of part is revised as 2.61nm by 2.49nm, and by the second quantum point type light-emitting diode
The size (diameter) of quantum dot crystal 3.71nm is revised as by 3.89nm.Consequently, it is possible to which the display light of display device is presented such as
Second frequency spectrum SP2.Second frequency spectrum SP2 includes first waveform W1B, the second waveform W2B and the 3rd waveform W3B, and first waveform W1B
Peak wavelength be 543nm, the second waveform W2B peak wavelength is 620nm and the 3rd waveform W3B peak wavelength is still
460nm.After the second frequency spectrum SP2 of amended display device is computed, the obtained pleasing to the eye energy of unit is 3.12 × 10-3
Watt/lumen (W/lm), this may conform to expected standard 3.15 × 10-3Watt/lumen (W/lm).Thus example is understood, changes luminous
The size of quantum dot crystal in element can as adjustment display device display light the pleasing to the eye energy of unit means
One of.
Fig. 5 is the schematic diagram of the overall spectrum of the display light of display device.In one example, the display light of display device
Frequency spectrum SP3 includes first waveform W1C, the second waveform W2C and the 3rd waveform W3C, wherein first waveform W1C and the 3rd waveform W2C
All it is unimodal waveform and the second waveform W2C is tripeak waveform.Specifically, sent out in this display device using the first fluorescent material type
Optical diode element provides the light with first waveform W1B, using the second fluorescent material type light-emitting diode provides tool
There is the second waveform W2B light, and the light with the 3rd waveform W3C is provided using chip type light emitting diode element.Here, the
Two waveform W2C have multiple peak wavelengths, wherein model of the maximum of the second waveform W2C peak wavelength in 590nm to 700nm
In enclosing.In the light-emitting component of second fluorescent material type light-emitting diode, the chemical formula of red fluorescence powder is A2(MF6):Mn4+,
Wherein A is Li, Na, K, Rb, Cs, NH4One of which, and the one of which for Ge, Si, Sn, Ti, Zr that M is either it is above-mentioned
The combination of element.This red fluorescence powder is also referred to as being fluorinated matter fluorescent powder, or KSF fluorescent material.With such a red fluorescence powder
The luminescent waveform (i.e. the second waveform W2C) of light-emitting diode be in general fixed, it is not easy to adjust.Therefore, show
Showing device 100 uses this light-emitting component as the element for sending feux rouges in light source module, needs to adjust again to show light to have
When having the pleasing to the eye energy of suitable unit, it can be realized using the luminous frequency spectrum of the first fluorescent material type light-emitting diode of adjustment.
For example, table two is the experiment knot as the display device of a part of light-emitting component using above-mentioned red light-emitting diode element
Really.
After the result of table two is counted and calculated, first waveform W1C peak wavelength for λ 1C, λ 1C in 500nm extremely
In the range of 570nm, and first waveform W1C halfwidth Fc coincidence formulas three：Fc≤-0.16λ1C 2+181.2λ1C- 51212, can
The pleasing to the eye energy of unit of display device is set to be not more than 3.15 × 10-3Watt/lumen (W/lm).
The upper schematic diagram of an embodiment of display panel in the display device that Fig. 6 is Fig. 2.It will be appreciated from fig. 6 that display panel
110A includes multiple first sub-pixels 112, multiple second sub-pixels 114 and multiple 3rd sub-pixels 116.First sub-pixel 112,
Second sub-pixel 114 and the 3rd sub-pixel 116 are arranged in array.In addition, the first sub-pixel 112, the second sub-pixel 114 and the 3rd
Sub-pixel 116 is suitable to synchronous or asynchronous unlatching to show display light L.
The upper schematic diagram of another embodiment of display panel in the display device that Fig. 7 is Fig. 2.As shown in Figure 7, display surface
Plate 110B in addition to multiple first sub-pixels 112 shown in Fig. 6, multiple second sub-pixels 114 and multiple 3rd sub-pixels 116,
Also include the 4th sub-pixel 118.First sub-pixel 112, the second sub-pixel 114, the 3rd sub-pixel 116 and the 4th sub-pixel 118
Arranged in array.In addition, in the present embodiment, the first sub-pixel 112, the sub-pixel 116 of the second sub-pixel 114 the 3rd and the 4th son
Pixel 118 is suitable to synchronous or asynchronous unlatching to show display light L.
In Fig. 6 and Fig. 7 embodiments, the first sub-pixel 112, the second sub-pixel 114 and the 3rd sub-pixel 116 for example to
Control the GTG height of different color.4th sub-pixel 118 is then used for controlling light source S penetration, therefore without special color
Coloured silk, but not to be limited.When Fig. 6 display panel 110A or Fig. 7 display panel 110B are applied to display device 100, display dress
Putting the 100 display light L sent frequency spectrum can be determined by the unlatching of these sub-pixels.
Specifically, when the first sub-pixel 112 is opened, may be such that display light L frequency spectrum includes first waveform W1.Namely
Say, the first sub-pixel 112 can for control first waveform W1 light throughput.When second sub-pixel 114 is opened, it may be such that
Showing light L frequency spectrum includes the second waveform W2.That is, the second sub-pixel 114 can for control the second waveform W2 light
Throughput.When 3rd sub-pixel 116 is opened, may be such that display light L frequency spectrum includes the 3rd waveform W3.That is, the 3rd
Sub-pixel 116 can for control the 3rd waveform W3 light throughput.In addition, during the unlatching of the 4th sub-pixel 118, showing light
L can include Fig. 3 first waveform W1, the second waveform W2 and the 3rd waveform W3 simultaneously.That is, the first sub-pixel 112 can
To control first waveform W1, the second waveform W2, the throughput with the light of the 3rd waveform W3 three.In addition, when the first sub-pixel
112nd, when the second sub-pixel 114 and the 3rd sub-pixel 116 are switched on, display light L frequency spectrum can also include first waveform simultaneously
W1, the second waveform W2 and the 3rd waveform W3 three.Therefore, display light L overall spectrum may include different first of peak wavelength
Waveform W1, the second waveform W2 and the 3rd waveform W3.But, these sub-pixels can it is synchronous or it is nonsynchronous open and close,
So display light L frequency spectrum at least one can be substantially made up of first waveform W1, the second waveform W2 and the 3rd waveform W3, and
Include this three waveforms while non-limiting necessary constant.
In summary, correspond in the frequency spectrum that light is shown by adjustment green glow waveform peak wavelength and halfwidth with
And/or the peak wavelength and the adjustable pleasing to the eye energy of unit for showing dress of halfwidth of the waveform corresponding to feux rouges.Based on the present invention
The halfwidth condition of embodiment, can allow the pleasing to the eye energy of unit of display light to be less than 3.15 × 10-3Watt/lumen (W/lm), and allow aobvious
The good color rendering of showing device maintenance and/or display effect.Therefore, the display device of the embodiment of the present invention can mitigate beholder
Eye strain sense and still with preferable display quality.
Although the present invention is disclosed above with embodiment, so it is not limited to the present invention, any art
Middle tool usually intellectual, without departing from the spirit and scope of the present invention, when a little change and retouching can be made, thus it is of the invention
Protection domain when being defined depending on the appended claims person of defining.
Claims (20)
1. a kind of display device, it is characterised in that including：
Display panel；And
Light source module, is arranged at the side of the display panel, and the light source module provides light source and passed through after the display panel
Display light is showed, the frequency spectrum of the display light is included in peak wavelength different first waveform, the second waveform and the 3rd waveform
At least one, wherein
The first waveform has the first peak wavelength, and first peak wavelength is the scope of λ 1 and λ 1 in 500nm to 570nm
It is interior；
Second waveform has the second peak wavelength, and second peak wavelength is the scope of λ 2 and λ 2 in 590nm to 700nm
It is interior；And
The halfwidth of the first waveform is FWHM1And coincidence formula 1：
FWHM1≤-15970λv 2+29486λv- 13533, wherein λvThe λ 2 of=λ 1/.
2. display device according to claim 1, it is characterised in that 0.852<λv<0.894.
3. display device according to claim 1, it is characterised in that the halfwidth of second waveform is FWHM2And meet
Formula 2：
FWHM2≤-15970λv 2+29486λv-13533。
4. display device according to claim 3, it is characterised in that FWHM1 and FWHM2 difference is less than 5nm.
5. display device according to claim 1, it is characterised in that 0.866<λv<0.886, the half of second waveform is high
A width of FWHM2, then FWHM1<59.4nm and FWHM2<59.4nm。
6. display device according to claim 1, it is characterised in that 0.862<λv<0.868, the half of second waveform is high
A width of FWHM2, then FWHM1<32.7nm and FWHM2<32.7nm。
7. display device according to claim 1, it is characterised in that the halfwidth of second waveform is equal to described first
The halfwidth of waveform.
8. display device according to claim 1, it is characterised in that the light source module includes multiple light-emitting components, institute
Light-emitting component is stated to be suitable to send the light source.
9. display device according to claim 8, it is characterised in that the light-emitting component includes quantum point type light-emitting diodes
Tube elements, fluorescent material type light-emitting diode, chip type light emitting diode element or its combination.
10. display device according to claim 1, it is characterised in that the display panel include multiple first sub-pixels,
Multiple second sub-pixels and multiple 3rd sub-pixels, first sub-pixel, second sub-pixel and the 3rd sub-pixel
Arranged in array, and first sub-pixel, second sub-pixel and the 3rd sub-pixel are suitable to synchronous or asynchronous opened
Open to show the display light.
11. display device according to claim 10, it is characterised in that the display panel is sub by opening described first
Pixel and make it is described display light include the first waveform.
12. display device according to claim 10, it is characterised in that the display panel is sub by opening described second
Pixel and make it is described display light include second waveform.
13. display device according to claim 10, it is characterised in that the display panel is sub by opening the described 3rd
Pixel and make it is described display light include the 3rd waveform.
14. display device according to claim 10, it is characterised in that the display panel further includes multiple 4th sub- pictures
Element, first sub-pixel, second sub-pixel, the 3rd sub-pixel are arranged with the 4th sub-pixel in array, and
First sub-pixel, second sub-pixel, the 3rd sub-pixel are suitable to synchronous or asynchronous with the 4th sub-pixel
Open to show the display light.
15. display device according to claim 14, it is characterised in that the display panel is sub by opening the described 4th
Pixel and the display light is included the first waveform, second waveform and the 3rd waveform.
16. display device according to claim 1, it is characterised in that the 3rd waveform has the 3rd peak wavelength, institute
It is λ 3 and λ 3 in the range of 440nm to 470nm to state the 3rd peak wavelength.
17. a kind of display device, it is characterised in that including：
Display panel；And
Light source module, is arranged at the side of the display panel, and the light source module provides light source and passed through after the display panel
Display light is showed, the frequency spectrum of the display light is included in peak wavelength different first waveform, the second waveform and the 3rd waveform
At least one, wherein
The first waveform has the first peak wavelength, and first peak wavelength is the model of λ 1C and λ 1C in 500nm to 570nm
In enclosing；
Second waveform has multiple peak wavelengths, and described peak wavelength the maximum is in the range of 590nm to 700nm；And
The halfwidth of the first waveform is Fc and coincidence formula 3:
Fc≤-0.16λ1C 2+181.2λ1C-51212。
18. display device according to claim 17, it is characterised in that second waveform has three peak wavelengths.
19. display device according to claim 17, it is characterised in that the light source module includes an at least fluorescent material shape
Light-emitting diode, the fluorescent material shape light-emitting diode sends the light of second waveform.
20. display device according to claim 19, it is characterised in that the fluorescent material shape light-emitting diode includes
Red fluorescence powder, and the chemical formula of the red fluorescence powder is A2(MF6):Mn4+, wherein A is Li, Na, K, Rb, Cs, NH4Its
Middle one kind, and the combination of the one of which for Ge, Si, Sn, Ti, Zr that M is either above-mentioned element.
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| CN110690361A (en) * | 2019-02-20 | 2020-01-14 | 友达光电股份有限公司 | Display device |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN107132692B (en) | 2020-03-06 |
| CN111367120A (en) | 2020-07-03 |
| TW201837511A (en) | 2018-10-16 |
| TWI636286B (en) | 2018-09-21 |
| CN111367120B (en) | 2023-04-14 |
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