CN113629119A - Display device and working method and device thereof - Google Patents
Display device and working method and device thereof Download PDFInfo
- Publication number
- CN113629119A CN113629119A CN202110982055.7A CN202110982055A CN113629119A CN 113629119 A CN113629119 A CN 113629119A CN 202110982055 A CN202110982055 A CN 202110982055A CN 113629119 A CN113629119 A CN 113629119A
- Authority
- CN
- China
- Prior art keywords
- liquid crystal
- cholesteric liquid
- functional layer
- crystal functional
- state
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 10
- 239000004986 Cholesteric liquid crystals (ChLC) Substances 0.000 claims abstract description 167
- 239000002346 layers by function Substances 0.000 claims abstract description 147
- 239000000758 substrate Substances 0.000 claims abstract description 93
- 230000005684 electric field Effects 0.000 claims abstract description 27
- 239000010410 layer Substances 0.000 claims description 37
- 238000004806 packaging method and process Methods 0.000 claims description 22
- 239000003292 glue Substances 0.000 claims description 8
- 238000011017 operating method Methods 0.000 claims 2
- 239000004973 liquid crystal related substance Substances 0.000 description 16
- 230000003098 cholesteric effect Effects 0.000 description 15
- 230000001276 controlling effect Effects 0.000 description 15
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 14
- 238000002834 transmittance Methods 0.000 description 13
- 239000000853 adhesive Substances 0.000 description 7
- 230000001070 adhesive effect Effects 0.000 description 7
- 230000001427 coherent effect Effects 0.000 description 7
- 229910052757 nitrogen Inorganic materials 0.000 description 7
- 239000012790 adhesive layer Substances 0.000 description 5
- 230000003247 decreasing effect Effects 0.000 description 5
- 230000003287 optical effect Effects 0.000 description 5
- 239000004820 Pressure-sensitive adhesive Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000005538 encapsulation Methods 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 102100026561 Filamin-A Human genes 0.000 description 3
- 101000913549 Homo sapiens Filamin-A Proteins 0.000 description 3
- 238000000889 atomisation Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000002596 correlated effect Effects 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 208000007138 otopalatodigital syndrome type 1 Diseases 0.000 description 2
- 239000012945 sealing adhesive Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- -1 region Substances 0.000 description 1
- 230000004044 response Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/50—OLEDs integrated with light modulating elements, e.g. with electrochromic elements, photochromic elements or liquid crystal elements
Landscapes
- Liquid Crystal (AREA)
Abstract
The invention provides a display device and a working method and device thereof, and belongs to the technical field of display. Wherein, display device includes: an OLED display substrate; the cholesteric liquid crystal functional layer is positioned on the light emergent side of the OLED display substrate; the cholesteric liquid crystal functional layer can be switched between a first state and a second state by changing an electric field of the cholesteric liquid crystal functional layer, and the cholesteric liquid crystal functional layer can transmit light in the first state; in the second state, the cholesteric liquid crystal functional layer scatters incident light. The invention can improve the rainbow texture phenomenon.
Description
Technical Field
The present invention relates to the field of display technologies, and in particular, to a display device, a method and an apparatus for operating the same.
Background
An Organic Light-Emitting Diode (OLED) display device has been classified as a next-generation display technology with great development prospect because of its advantages of thinness, lightness, wide viewing angle, active Light emission, continuously adjustable Light emission color, low cost, fast response speed, low energy consumption, low driving voltage, wide working temperature range, simple production process, high Light-Emitting efficiency, flexible display, etc.
For the rigid OLED display substrate, a gap exists between the rigid packaging cover plate and the OLED film layer, nitrogen is filled in the gap, and after ambient light incident from the outside is reflected by the OLED film layer and the packaging cover plate due to the large difference of the refractive indexes of the nitrogen and the packaging cover plate, reflected light reflected by the OLED film layer and reflected light reflected by the packaging cover plate generate obvious equal-inclination interference at the interface of the packaging cover plate and air; under the condition of monochromatic light, the phenomenon that the intensity of reflected light changes alternately appears; under the condition of polychromatic light, the refractive indexes of light with different wavelengths in the same medium are different, and the distribution positions of light intensity after interference are different, so that chromatic dispersion is caused, namely rainbow fringes appear.
Disclosure of Invention
The invention aims to provide a display device and a working method and device thereof, which can improve the rainbow texture phenomenon.
To solve the above technical problem, embodiments of the present invention provide the following technical solutions:
in one aspect, there is provided a display device including:
an OLED display substrate;
the cholesteric liquid crystal functional layer is positioned on the light emergent side of the OLED display substrate;
the cholesteric liquid crystal functional layer can be switched between a first state and a second state by changing an electric field of the cholesteric liquid crystal functional layer, and the cholesteric liquid crystal functional layer can transmit light in the first state; in the second state, the cholesteric liquid crystal functional layer scatters incident light.
In some embodiments, the OLED display substrate includes:
a substrate base plate;
the OLED display film layer is positioned on the substrate base plate;
and the packaging cover plate is positioned on one side of the OLED display film layer, which is far away from the substrate base plate, and a gap is formed between the packaging cover plate and the substrate base plate.
In some embodiments, the display device further comprises:
and the polaroid is positioned between the OLED display substrate and the cholesteric liquid crystal functional layer.
In some embodiments, the cholesteric liquid crystal functional layer is bonded to the polarizer by a conformable glue layer.
In some embodiments, the cholesteric liquid crystal functional layer is bonded on the OLED display substrate through a bonding glue layer.
In some embodiments, the display device further comprises:
and the polarizer is positioned on one side of the cholesteric liquid crystal functional layer, which is far away from the OLED display substrate.
In some embodiments, the cholesteric liquid crystal functional layer comprises:
a first substrate and a second substrate provided to the cartridge;
the first transparent electrode is positioned on one side of the first substrate facing the second substrate;
the second transparent electrode is positioned on one side of the second substrate facing the first substrate;
cholesteric liquid crystal between the first transparent electrode and the second transparent electrode.
The embodiment of the invention also provides a working method of the display device, which is applied to the display device and comprises the following steps:
detecting the intensity of ambient light of the environment where the display device is located;
when the intensity of the ambient light is greater than or equal to a preset threshold value, controlling an electric field of the cholesteric liquid crystal functional layer to enable the cholesteric liquid crystal functional layer to be in the second state; and when the intensity of the ambient light is smaller than a preset threshold value, controlling an electric field of the cholesteric liquid crystal functional layer to enable the cholesteric liquid crystal functional layer to be in the first state.
In some embodiments, said controlling the electric field of said cholesteric liquid crystal functional layer such that said cholesteric liquid crystal functional layer is in said second state comprises:
and applying voltage to the electrodes at two sides of the cholesteric liquid crystal functional layer to enable the voltage difference between the two electrodes to be larger than the H-state critical voltage, and then controlling the voltage difference between the two electrodes to be stepped down to enable the cholesteric liquid crystal functional layer to be in the second state.
In some embodiments, controlling the electric field of the cholesteric liquid crystal functional layer such that the cholesteric liquid crystal functional layer is in the first state comprises:
and applying voltage to the electrodes at two sides of the cholesteric liquid crystal functional layer to enable the voltage difference between the two electrodes to be larger than the H-state critical voltage, so that the cholesteric liquid crystal functional layer is in the first state.
An embodiment of the present invention further provides a working device of a display device, which is applied to the display device described above, and the working device includes:
an ambient light sensor for detecting an intensity of ambient light of an environment in which the display device is located;
the controller is used for controlling the electric field of the cholesteric liquid crystal functional layer when the intensity of the ambient light is greater than or equal to a preset threshold value, so that the cholesteric liquid crystal functional layer is in the second state; and when the intensity of the ambient light is smaller than a preset threshold value, controlling an electric field of the cholesteric liquid crystal functional layer to enable the cholesteric liquid crystal functional layer to be in the first state.
In some embodiments, the controller is specifically configured to apply a voltage to electrodes on both sides of the cholesteric liquid crystal functional layer, so that a voltage difference between the two electrodes is greater than an H-state threshold voltage, and then control a voltage difference between the two electrodes to step down, so that the cholesteric liquid crystal functional layer is in the second state.
In some embodiments, the controller is specifically configured to apply a voltage to electrodes on both sides of the cholesteric liquid crystal functional layer, so that a voltage difference between the two electrodes is greater than an H-state threshold voltage, and the cholesteric liquid crystal functional layer is in the first state.
The embodiment of the invention has the following beneficial effects:
in the scheme, the cholesteric liquid crystal functional layer is arranged on the light emergent side of the OLED display substrate, the cholesteric liquid crystal functional layer can be switched between a first state and a second state by changing the electric field of the cholesteric liquid crystal functional layer, and the cholesteric liquid crystal functional layer penetrates through light in the first state, so that the normal display of the OLED display substrate is not influenced; in the second state, the cholesteric liquid crystal functional layer scatters incident light, the scattered light is non-correlated light, the interference phenomenon caused after the incident light is reflected by the OLED display substrate can be avoided, and the rainbow texture phenomenon is solved.
Drawings
Fig. 1 and 2 are schematic diagrams illustrating a rainbow pattern appearing on a conventional display panel;
fig. 3-5 are schematic views of cholesteric liquid crystal panels in different states;
FIG. 6 is a schematic diagram of the transmittance of a cholesteric liquid crystal panel as a function of the voltage applied across the electrodes;
FIGS. 7 and 11 are schematic structural views of a display device according to an embodiment of the present invention;
FIG. 8 is a schematic structural diagram of a cholesteric liquid crystal functional layer according to an embodiment of the present invention;
FIG. 9 is a schematic diagram of an embodiment of the present invention in which coherent light passes through a cholesteric liquid crystal functional layer in an FC state and becomes incoherent light;
fig. 10 is a schematic view of a cholesteric liquid crystal functional layer in which light passes through an H state according to an embodiment of the present invention.
Reference numerals
01 substrate base plate
02 OLED display film layer
03 packaging layer
04 frame sealing glue
05 packaging cover plate
06 voids
07 polarizer
08 adhesive layer
09 cholesteric liquid crystal functional layer
23 cholesteric liquid crystal
091 first substrate
096 second substrate
093 packaging adhesive
092 first transparent electrode
095 second transparent electrode
094 cholesteric liquid crystal
Detailed Description
In order to make the technical problems, technical solutions and advantages to be solved by the embodiments of the present invention clearer, the following detailed description will be given with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, the conventional OLED display substrate includes: the packaging box comprises a substrate base plate 01 and a packaging cover plate 05 which are arranged oppositely, wherein the substrate base plate 01 and the packaging cover plate 05 are packaged together through frame sealing glue 04; an OLED display film layer 02 and an encapsulation layer 03 are arranged on the substrate base plate 01; a gap 06 exists between the substrate base plate 01 and the package cover plate 05, and the gap 06 is generally filled with nitrogen. The difference between the refractive index of the nitrogen and the refractive index of the packaging cover plate is relatively large, as shown in fig. 1, after ambient light enters the OLED display substrate, the following formula is satisfied:
n1sinθ1＝n2sinα1＝n3sinβ1 n1sine2＝n2sinα2＝n3sinβ2
OPD1＝2tcosα1+2dcosβ1＝jλ(j＝0，1，2，3...) OPD2＝2tcosα2+2dcosβ2＝(2j-1)λ/2(j＝0，1，2，3...)
wherein n is1Is the refractive index of air, n2Refractive index of the cover plate, n3For the refractive index of nitrogen, OPD1 and OPD2 are the optical paths of the two different light beams on the left and right in fig. 1, respectively, t is the thickness of the package cover plate, and d is the thickness of the gap, i.e. the distance between the package cover plate and the package layer.
It can be seen that after the ambient light is reflected by the encapsulation layer, interference occurs between the interface between the encapsulation cover plate and the air and the light emitted by the encapsulation cover plate after the ambient light is emitted, and under the condition of monochromatic light, the phenomenon that the intensity of the reflected light is changed alternately occurs. As shown in fig. 2, in the case of polychromatic light, due to the difference in refractive index of light with different wavelengths in the same medium, the distribution position of light intensity after interference is different, causing dispersion, i.e., rainbow patterns appear, where G is white light, G1 is blue light, G2 is green light, and G3 is red light.
The embodiment of the invention provides a display device and a working method and device thereof, which can improve rainbow texture phenomenon.
An embodiment of the present invention provides a display device including:
an OLED display substrate;
the cholesteric liquid crystal functional layer is positioned on the light emergent side of the OLED display substrate;
the cholesteric liquid crystal functional layer can be switched between a first state and a second state by changing an electric field of the cholesteric liquid crystal functional layer, and the cholesteric liquid crystal functional layer can transmit light in the first state; in the second state, the cholesteric liquid crystal functional layer scatters incident light.
In the embodiment, the cholesteric liquid crystal functional layer is arranged on the light emergent side of the OLED display substrate, the cholesteric liquid crystal functional layer can be switched between a first state and a second state by changing the electric field of the cholesteric liquid crystal functional layer, and the cholesteric liquid crystal functional layer penetrates through light in the first state, so that the normal display of the OLED display substrate is not influenced; in the second state, the cholesteric liquid crystal functional layer scatters incident light, the scattered light is non-correlated light, the interference phenomenon caused after the incident light is reflected by the OLED display substrate can be avoided, and the rainbow texture phenomenon is solved.
The cholesteric multistable liquid crystal layer can present three different molecular structure arrangements, namely a Planar Texture (P state for short); focal conic texture (FC) and Homeotropic texture (Homeotropic texture), which may also be referred to as Homeotropic phase, H. When the applied voltage (i.e., the voltage difference between the electrodes applied to both sides of the cholesteric multistable liquid crystal layer) reaches or exceeds Ec (H-state threshold voltage), the liquid crystal 23 is in the H state, and the cholesteric multistable liquid crystal layer is transparent, as shown in fig. 3 and 5 c; as shown in fig. 5a, when the applied voltage rapidly drops to zero (e.g. drops to zero within 50-80 ms) after reaching Ec (H state threshold voltage), the cholesteric multistable liquid crystal layer is driven to a planar state, i.e. P state (reflecting light of a fixed wavelength); as shown in fig. 4 and 5b, after the applied voltage reaches Ec and the step voltage is decreased to zero, the cholesteric multistable liquid crystal layer is driven to FC state (focal conic state), the cholesteric multistable liquid crystal layer in FC state is in multi-domain state, and a helical structure still exists in each domain, at this time, the cholesteric multistable liquid crystal layer will generate strong scattering effect to the incident light.
As shown in fig. 6, when the applied voltage is small, for example, less than 2V, the cholesteric multistable liquid crystal layer will generate strong scattering effect on the incident light, and the transmittance of the cholesteric multistable liquid crystal layer is 0; when the applied voltage is less than 4V and more than 2V, the cholesteric multistable liquid crystal layer generates a scattering effect on incident light, and the transmittance of the cholesteric multistable liquid crystal layer is more than 1% and less than 80%; when the applied voltage is large, for example, more than 4.5V, the cholesteric multistable liquid crystal layer is transparent, and the transmittance is more than 80%. Therefore, by controlling the voltage applied to the cholesteric multistable liquid crystal layer, the cholesteric multistable liquid crystal layer can be controlled to transmit or scatter light.
In the embodiment, by using the characteristics of the cholesteric multistable liquid crystal layer and changing the electric field of the cholesteric liquid crystal functional layer, the cholesteric liquid crystal functional layer can be switched between the first state and the second state, so that the interference phenomenon caused by the incident light reflected by the OLED display substrate is avoided, and the rainbow texture phenomenon is solved.
In one embodiment, as shown in fig. 7, the display device includes an OLED display substrate, and a cholesteric liquid crystal functional layer 09 on a light emitting side of the OLED display substrate, as shown in fig. 8, the cholesteric liquid crystal functional layer 09 includes:
a first substrate 091 and a second substrate 096 provided to the cartridge, the first substrate 091 and the second substrate 096 being sealed together by a frame sealing adhesive 093;
a first transparent electrode 092 on a side of the first substrate 091 facing the second substrate 096;
a second transparent electrode 095 on a side of the second substrate 096 facing the first substrate 091;
cholesteric liquid crystal 094 between the first transparent electrode 092 and the second transparent electrode 095.
As shown in fig. 7, the OLED display substrate includes:
a base substrate 01;
the OLED display film layer 02 is positioned on the substrate base plate 01;
the packaging cover plate 05 is positioned on one side, away from the substrate base plate 01, of the OLED display film layer 02, the packaging cover plate 05 and the substrate base plate 01 are packaged together through frame sealing glue, a gap is formed between the packaging cover plate 05 and the substrate base plate 01, and nitrogen is generally filled in the gap.
As shown in fig. 7, the display device further includes:
the polarizer 07 is positioned between the OLED display substrate and the cholesteric liquid crystal functional layer 09; in some embodiments, the cholesteric liquid crystal functional layer 09 is adhered to the polarizer 07 through an adhesive layer 08, and the adhesive layer 08 may be a pressure-sensitive adhesive, an optical adhesive, or a water gel, and is not limited to the application of the pressure-sensitive adhesive, the optical adhesive, or the water gel.
In this embodiment, the cholesteric liquid crystal functional layer 09 can be switched between the first state and the second state by changing the electric field of the cholesteric liquid crystal functional layer 09 according to the environment in which the display device is placed. For example, under weak ambient light, the cholesteric liquid crystal functional layer is controlled to be in a first state, and the cholesteric liquid crystal functional layer penetrates through light, so that normal display of the OLED display substrate is not influenced; under strong ambient light, the cholesteric liquid crystal functional layer is controlled to be in the second state, the cholesteric liquid crystal functional layer scatters incident light, the scattered light is irrelevant light, the interference phenomenon after the incident light is reflected by the OLED display substrate can be avoided, and the rainbow texture phenomenon is solved.
In another embodiment, as shown in fig. 11, the display device includes an OLED display substrate, and a cholesteric liquid crystal functional layer 09 on the light emitting side of the OLED display substrate, as shown in fig. 8, the cholesteric liquid crystal functional layer 09 includes:
a first substrate 091 and a second substrate 096 provided to the cartridge, the first substrate 091 and the second substrate 096 being sealed together by a frame sealing adhesive 093;
a first transparent electrode 092 on a side of the first substrate 091 facing the second substrate 096;
a second transparent electrode 095 on a side of the second substrate 096 facing the first substrate 091;
cholesteric liquid crystal 094 between the first transparent electrode 092 and the second transparent electrode 095.
As shown in fig. 11, the OLED display substrate includes:
a base substrate 01;
the OLED display film layer 02 is positioned on the substrate base plate 01;
the packaging cover plate 05 is positioned on one side, away from the substrate base plate 01, of the OLED display film layer 02, the packaging cover plate 05 and the substrate base plate 01 are packaged together through frame sealing glue, a gap is formed between the packaging cover plate 05 and the substrate base plate 01, and nitrogen is generally filled in the gap.
As shown in fig. 11, the cholesteric liquid crystal functional layer 09 is bonded to the OLED display substrate by an adhesive layer 08. The adhesive layer 08 may be a pressure-sensitive adhesive, an optical adhesive, or a water adhesive, and is not limited to the pressure-sensitive adhesive, the optical adhesive, or the water adhesive. The display device further includes: and the polarizer 07 is positioned on the cholesteric liquid crystal functional layer 09 and is far away from the OLED display substrate.
In this embodiment, the cholesteric liquid crystal functional layer 09 can be switched between the first state and the second state by changing the electric field of the cholesteric liquid crystal functional layer 09 according to the environment in which the display device is placed. For example, under weak ambient light, the cholesteric liquid crystal functional layer is controlled to be in a first state, and the cholesteric liquid crystal functional layer penetrates through light, so that normal display of the OLED display substrate is not influenced; under strong ambient light, the cholesteric liquid crystal functional layer is controlled to be in the second state, the cholesteric liquid crystal functional layer scatters incident light, the scattered light is irrelevant light, the interference phenomenon after the incident light is reflected by the OLED display substrate can be avoided, and the rainbow texture phenomenon is solved.
When the display device is under strong ambient light which generates rainbow fringes, a voltage is applied to the first transparent electrode 092 and the second transparent electrode 095 such that a voltage difference between the first transparent electrode 092 and the second transparent electrode 095 is greater than a voltage Ec of an H-state threshold voltage, then step-down is performed, for example, the voltage difference between the first transparent electrode 092 and the second transparent electrode 095 is decreased to 0.8Ec for a certain period of time, then the voltage difference between the first transparent electrode 092 and the second transparent electrode 095 is decreased to 0.6Ec for a certain period of time, then the voltage difference between the first transparent electrode 092 and the second transparent electrode 095 is decreased to 0.4Ec for a certain period of time, then the voltage difference between the first transparent electrode 092 and the second transparent electrode 095 is decreased to 0.2Ec for a certain period of time to obtain an FC state, at which, as shown in fig. 9, cholesteric liquid crystal generates a multi-domain structure, and light is scattered when passing through, the coherence is reduced, the coherent light becomes incoherent light after passing through the cholesteric liquid crystal functional layer 09, and the rainbow texture phenomenon can be improved because only the coherent light can appear. For interference rainbow patterns with different intensities, different driving voltages E (voltage difference between the first transparent electrode 092 and the second transparent electrode 095) can be applied to the cholesteric liquid crystal in the FC state to control the turning of the multi-domains, so as to obtain different haze (scattering rate) to correspond to the interference rainbow patterns with different intensities, and the greater the intensity of the interference rainbow pattern, the greater the haze of the cholesteric liquid crystal. Wherein, E is smaller than Ec, and the larger E is, the smaller the included angle between adjacent cholesteric liquid crystals in the cholesteric liquid crystal functional layer 09 is, the larger the haze of the cholesteric liquid crystal functional layer 09 is, that is, the larger the scattering rate of incident light is, the lower the transmittance of the cholesteric liquid crystal functional layer 09 is. In practical applications, the driving voltage applied to the cholesteric liquid crystal functional layer 09 can be adjusted according to the required transmittance and haze.
When the display device is under weak ambient light, rainbow patterns are not easy to generate. Voltage is applied to the first transparent electrode 092 and the second transparent electrode 095, so that the voltage difference between the first transparent electrode 092 and the second transparent electrode 095 is greater than the voltage Ec of the H-state threshold voltage, as shown in fig. 10, the cholesteric liquid crystal functional layer 09 is changed into an H state and becomes transparent, and at this time, the light transmittance of the cholesteric liquid crystal functional layer 09 can be ensured, and the green spark phenomenon caused by atomization is avoided.
The embodiment of the invention also provides a working method of the display device, which is applied to the display device and comprises the following steps:
detecting the intensity of ambient light of the environment where the display device is located;
when the intensity of the ambient light is greater than or equal to a preset threshold value, controlling an electric field of the cholesteric liquid crystal functional layer to enable the cholesteric liquid crystal functional layer to be in the second state; and when the intensity of the ambient light is smaller than a preset threshold value, controlling an electric field of the cholesteric liquid crystal functional layer to enable the cholesteric liquid crystal functional layer to be in the first state.
In some embodiments, said controlling the electric field of said cholesteric liquid crystal functional layer such that said cholesteric liquid crystal functional layer is in said second state comprises:
and applying voltage to the electrodes at two sides of the cholesteric liquid crystal functional layer to enable the voltage difference between the two electrodes to be larger than the H-state critical voltage, and then controlling the voltage difference between the two electrodes to be stepped down to enable the cholesteric liquid crystal functional layer to be in the second state.
When the display device is under strong ambient light which generates rainbow fringes, as shown in fig. 9, a voltage is applied to the first and second transparent electrodes 092 and 095 such that the voltage difference between the first and second transparent electrodes 092 and 095 is greater than the voltage Ec of the H-state threshold voltage, and then step-down is performed, such as maintaining the voltage difference between the first and second transparent electrodes 092 and 095 to 0.8Ec for a certain period of time, then maintaining the voltage difference between the first and second transparent electrodes 092 and 095 to 0.6Ec for a certain period of time, then maintaining the voltage difference between the first and second transparent electrodes 092 and 095 to 0.4Ec for a certain period of time, and then maintaining the voltage difference between the first and second transparent electrodes 092 and 095 to 0.2Ec for a certain period of time to obtain an FC state, at which the cholesteric liquid crystal generates a multi-domain structure as shown in fig. 9, the light generates scattering when passing through, the coherence is reduced, the coherent light becomes incoherent light after passing through the cholesteric liquid crystal functional layer 09, and the rainbow texture phenomenon can be improved because only the coherent light can generate the rainbow texture phenomenon. For interference rainbow patterns with different intensities, different driving voltages E (voltage difference between the first transparent electrode 092 and the second transparent electrode 095) can be applied to the cholesteric liquid crystal in the FC state to control the turning of the multi-domains, so as to obtain different haze (scattering rate) to correspond to the interference rainbow patterns with different intensities, and the greater the intensity of the interference rainbow pattern, the greater the haze of the cholesteric liquid crystal. Wherein, E is smaller than Ec, and the larger E is, the smaller the included angle between adjacent cholesteric liquid crystals in the cholesteric liquid crystal functional layer 09 is, the larger the haze of the cholesteric liquid crystal functional layer 09 is, that is, the larger the scattering rate of incident light is, the lower the transmittance of the cholesteric liquid crystal functional layer 09 is. In practical applications, the driving voltage applied to the cholesteric liquid crystal functional layer 09 can be adjusted according to the required transmittance and haze.
In some embodiments, controlling the electric field of the cholesteric liquid crystal functional layer such that the cholesteric liquid crystal functional layer is in the first state comprises:
and applying voltage to the electrodes at two sides of the cholesteric liquid crystal functional layer to enable the voltage difference between the two electrodes to be larger than the H-state critical voltage, so that the cholesteric liquid crystal functional layer is in the first state.
When the display device is under weak ambient light, rainbow patterns are not easy to generate. As shown in fig. 10, a voltage is applied to the first transparent electrode 092 and the second transparent electrode 095 so that the voltage difference between the first transparent electrode 092 and the second transparent electrode 095 is greater than the voltage Ec of the H-state threshold voltage, and as shown in fig. 10, the cholesteric liquid crystal functional layer 09 is converted into the H state and becomes transparent. The light transmittance of the cholesteric liquid crystal functional layer 09 can be ensured, and the phenomenon of green scattering caused by atomization is avoided.
An embodiment of the present invention further provides a working device of a display device, which is applied to the display device described above, and the working device includes:
an ambient light sensor for detecting an intensity of ambient light of an environment in which the display device is located;
the controller is used for controlling the electric field of the cholesteric liquid crystal functional layer when the intensity of the ambient light is greater than or equal to a preset threshold value, so that the cholesteric liquid crystal functional layer is in the second state; and when the intensity of the ambient light is smaller than a preset threshold value, controlling an electric field of the cholesteric liquid crystal functional layer to enable the cholesteric liquid crystal functional layer to be in the first state.
In some embodiments, the controller is specifically configured to apply a voltage to electrodes on both sides of the cholesteric liquid crystal functional layer, so that a voltage difference between the two electrodes is greater than an H-state threshold voltage, and then control a voltage difference between the two electrodes to step down, so that the cholesteric liquid crystal functional layer is in the second state.
When the display device is under strong ambient light which generates rainbow fringes, as shown in fig. 9, a voltage is applied to the first and second transparent electrodes 092 and 095 such that the voltage difference between the first and second transparent electrodes 092 and 095 is greater than the voltage Ec of the H-state threshold voltage, and then step-down is performed, such as maintaining the voltage difference between the first and second transparent electrodes 092 and 095 to 0.8Ec for a certain period of time, then maintaining the voltage difference between the first and second transparent electrodes 092 and 095 to 0.6Ec for a certain period of time, then maintaining the voltage difference between the first and second transparent electrodes 092 and 095 to 0.4Ec for a certain period of time, and then maintaining the voltage difference between the first and second transparent electrodes 092 and 095 to 0.2Ec for a certain period of time to obtain an FC state, at which the cholesteric liquid crystal generates a multi-domain structure as shown in fig. 9, the light generates scattering when passing through, the coherence is reduced, the coherent light becomes incoherent light after passing through the cholesteric liquid crystal functional layer 09, and the rainbow texture phenomenon can be improved because only the coherent light can generate the rainbow texture phenomenon. For interference rainbow patterns with different intensities, different driving voltages E (voltage difference between the first transparent electrode 092 and the second transparent electrode 095) can be applied to the cholesteric liquid crystal in the FC state to control the turning of the multi-domains, so as to obtain different haze (scattering rate) to correspond to the interference rainbow patterns with different intensities, and the greater the intensity of the interference rainbow pattern, the greater the haze of the cholesteric liquid crystal. Wherein, E is smaller than Ec, and the larger E is, the smaller the included angle between adjacent cholesteric liquid crystals in the cholesteric liquid crystal functional layer 09 is, the larger the haze of the cholesteric liquid crystal functional layer 09 is, that is, the larger the scattering rate of incident light is, the lower the transmittance of the cholesteric liquid crystal functional layer 09 is. In practical applications, the driving voltage applied to the cholesteric liquid crystal functional layer 09 can be adjusted according to the required transmittance and haze.
In some embodiments, the controller is specifically configured to apply a voltage to electrodes on both sides of the cholesteric liquid crystal functional layer, so that a voltage difference between the two electrodes is greater than an H-state threshold voltage, and the cholesteric liquid crystal functional layer is in the first state.
When the display device is under weak ambient light, rainbow patterns are not easy to generate. As shown in fig. 10, a voltage is applied to the first transparent electrode 092 and the second transparent electrode 095 so that the voltage difference between the first transparent electrode 092 and the second transparent electrode 095 is greater than the voltage Ec of the H-state threshold voltage, and as shown in fig. 10, the cholesteric liquid crystal functional layer 09 is converted into the H state and becomes transparent. The light transmittance of the cholesteric liquid crystal functional layer 09 can be ensured, and the phenomenon of green scattering caused by atomization is avoided.
In this embodiment, the display device includes but is not limited to: radio frequency unit, network module, audio output unit, input unit, sensor, display unit, user input unit, interface unit, memory, processor, and power supply. It will be appreciated by those skilled in the art that the above described configuration of the display device does not constitute a limitation of the display device, and that the display device may comprise more or less of the components described above, or some components may be combined, or a different arrangement of components. In the embodiment of the present invention, the display device includes, but is not limited to, a display, a mobile phone, a tablet computer, a television, a wearable electronic device, a navigation display device, and the like.
The display device may be: the display device comprises a television, a display, a digital photo frame, a mobile phone, a tablet personal computer and any other product or component with a display function, wherein the display device further comprises a flexible circuit board, a printed circuit board and a back plate.
It should be noted that, in the present specification, all the embodiments are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the embodiments, since they are substantially similar to the product embodiments, the description is simple, and the relevant points can be referred to the partial description of the product embodiments.
Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The use of "first," "second," and similar terms in this disclosure is not intended to indicate any order, quantity, or importance, but rather is used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
It will be understood that when an element such as a layer, film, region, or substrate is referred to as being "on" or "under" another element, it can be "directly on" or "under" the other element or intervening elements may be present.
In the foregoing description of embodiments, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only for the specific embodiments of the present disclosure, but the scope of the present disclosure is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present disclosure, and all the changes or substitutions should be covered within the scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.
Claims (13)
1. A display device, comprising:
an OLED display substrate;
the cholesteric liquid crystal functional layer is positioned on the light emergent side of the OLED display substrate;
the cholesteric liquid crystal functional layer can be switched between a first state and a second state by changing an electric field of the cholesteric liquid crystal functional layer, and the cholesteric liquid crystal functional layer can transmit light in the first state; in the second state, the cholesteric liquid crystal functional layer scatters incident light.
2. The display device of claim 1, wherein the OLED display substrate comprises:
a substrate base plate;
the OLED display film layer is positioned on the substrate base plate;
and the packaging cover plate is positioned on one side of the OLED display film layer, which is far away from the substrate base plate, and a gap is formed between the packaging cover plate and the substrate base plate.
3. The display device according to claim 1, further comprising:
and the polaroid is positioned between the OLED display substrate and the cholesteric liquid crystal functional layer.
4. A display device as claimed in claim 3, characterized in that the cholesteric liquid crystal functional layer is bonded to the polarizer by means of a layer of glue.
5. The display device according to claim 1,
the cholesteric liquid crystal functional layer is bonded on the OLED display substrate through a bonding glue layer.
6. The display device according to claim 5, further comprising:
and the polarizer is positioned on one side of the cholesteric liquid crystal functional layer, which is far away from the OLED display substrate.
7. A display device as claimed in any one of claims 1 to 6, characterized in that the cholesteric liquid crystal functional layer comprises:
a first substrate and a second substrate provided to the cartridge;
the first transparent electrode is positioned on one side of the first substrate facing the second substrate;
the second transparent electrode is positioned on one side of the second substrate facing the first substrate;
cholesteric liquid crystal between the first transparent electrode and the second transparent electrode.
8. An operating method of a display device, applied to the display device according to any one of claims 1 to 7, the operating method comprising:
detecting the intensity of ambient light of the environment where the display device is located;
when the intensity of the ambient light is greater than or equal to a preset threshold value, controlling an electric field of the cholesteric liquid crystal functional layer to enable the cholesteric liquid crystal functional layer to be in the second state; and when the intensity of the ambient light is smaller than a preset threshold value, controlling an electric field of the cholesteric liquid crystal functional layer to enable the cholesteric liquid crystal functional layer to be in the first state.
9. The method according to claim 8, wherein said controlling the electric field of the cholesteric liquid crystal functional layer such that the cholesteric liquid crystal functional layer is in the second state comprises:
and applying voltage to the electrodes at two sides of the cholesteric liquid crystal functional layer to enable the voltage difference between the two electrodes to be larger than the H-state critical voltage, and then controlling the voltage difference between the two electrodes to be stepped down to enable the cholesteric liquid crystal functional layer to be in the second state.
10. Method for operating a display device according to claim 8, wherein controlling the electric field of the cholesteric liquid crystal functional layer such that the cholesteric liquid crystal functional layer is in the first state comprises:
and applying voltage to the electrodes at two sides of the cholesteric liquid crystal functional layer to enable the voltage difference between the two electrodes to be larger than the H-state critical voltage, so that the cholesteric liquid crystal functional layer is in the first state.
11. An operating device for a display device, applied to the display device according to any one of claims 1 to 7, comprising:
an ambient light sensor for detecting an intensity of ambient light of an environment in which the display device is located;
the controller is used for controlling the electric field of the cholesteric liquid crystal functional layer when the intensity of the ambient light is greater than or equal to a preset threshold value, so that the cholesteric liquid crystal functional layer is in the second state; and when the intensity of the ambient light is smaller than a preset threshold value, controlling an electric field of the cholesteric liquid crystal functional layer to enable the cholesteric liquid crystal functional layer to be in the first state.
12. The operating device for a display device according to claim 11, wherein the controller is configured to apply a voltage to electrodes on both sides of the cholesteric liquid crystal functional layer so that a voltage difference between the two electrodes is greater than an H-state threshold voltage, and then control a voltage difference step-down between the two electrodes so that the cholesteric liquid crystal functional layer is in the second state.
13. The operating device of a display device according to claim 11, wherein the controller is configured to apply a voltage to the electrodes on both sides of the cholesteric liquid crystal functional layer, such that the voltage difference between the two electrodes is greater than the H-state threshold voltage, and such that the cholesteric liquid crystal functional layer is in the first state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110982055.7A CN113629119A (en) | 2021-08-25 | 2021-08-25 | Display device and working method and device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110982055.7A CN113629119A (en) | 2021-08-25 | 2021-08-25 | Display device and working method and device thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113629119A true CN113629119A (en) | 2021-11-09 |
Family
ID=78387646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110982055.7A Pending CN113629119A (en) | 2021-08-25 | 2021-08-25 | Display device and working method and device thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113629119A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10123559A (en) * | 1996-10-23 | 1998-05-15 | Sharp Corp | Liquid crystal display device |
| CN1714311A (en) * | 2002-11-22 | 2005-12-28 | 皇家飞利浦电子股份有限公司 | Transflective liquid crystal display device |
| TW201118823A (en) * | 2009-11-27 | 2011-06-01 | Univ Nat Taiwan | Transflective display device |
| KR20160002600A (en) * | 2014-06-30 | 2016-01-08 | 엘지디스플레이 주식회사 | Light controlling apparatus and transparent display device using the same |
| CN108873533A (en) * | 2018-06-29 | 2018-11-23 | 深圳市华星光电技术有限公司 | Display device |
| CN113241356A (en) * | 2021-04-25 | 2021-08-10 | 京东方科技集团股份有限公司 | OLED display panel, manufacturing method thereof and display device |
| CN215988766U (en) * | 2021-08-25 | 2022-03-08 | 京东方科技集团股份有限公司 | Display device and working device thereof |
-
2021
- 2021-08-25 CN CN202110982055.7A patent/CN113629119A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10123559A (en) * | 1996-10-23 | 1998-05-15 | Sharp Corp | Liquid crystal display device |
| CN1714311A (en) * | 2002-11-22 | 2005-12-28 | 皇家飞利浦电子股份有限公司 | Transflective liquid crystal display device |
| TW201118823A (en) * | 2009-11-27 | 2011-06-01 | Univ Nat Taiwan | Transflective display device |
| KR20160002600A (en) * | 2014-06-30 | 2016-01-08 | 엘지디스플레이 주식회사 | Light controlling apparatus and transparent display device using the same |
| CN108873533A (en) * | 2018-06-29 | 2018-11-23 | 深圳市华星光电技术有限公司 | Display device |
| CN113241356A (en) * | 2021-04-25 | 2021-08-10 | 京东方科技集团股份有限公司 | OLED display panel, manufacturing method thereof and display device |
| CN215988766U (en) * | 2021-08-25 | 2022-03-08 | 京东方科技集团股份有限公司 | Display device and working device thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6456279B1 (en) | Liquid crystal display device with a touch panel | |
| JP4747053B2 (en) | Liquid crystal display element and electronic device equipped with the same | |
| CN101464588B (en) | Display and electronic apparatus | |
| US10139670B2 (en) | Display panel and display device | |
| TWI237143B (en) | Half-transmissive liquid crystal display element | |
| TWI622818B (en) | Backlight unit and mobile electronic device including the same | |
| KR20000068539A (en) | Liquid crystal display | |
| TWI715258B (en) | Display apparatus | |
| CN215988766U (en) | Display device and working device thereof | |
| KR100915111B1 (en) | A photocell device integrated into a full color display | |
| US11163192B2 (en) | Display apparatus | |
| US10586833B2 (en) | OLED display color compensation | |
| US20130235559A1 (en) | Spectrally Transflective Display | |
| US11392007B2 (en) | Display apparatus with a micro lite-emmitting diode panel overlapped with a reflective display panel | |
| CN113629119A (en) | Display device and working method and device thereof | |
| WO2000072084A1 (en) | Liquid crystal display panel | |
| CN114200722A (en) | Display panel and display device | |
| JPH0561024A (en) | Liquid crystal display device | |
| TWI812093B (en) | A method for switching a wearing device | |
| US11927864B2 (en) | Optical systems having fLCOS display panels | |
| US20240021138A1 (en) | Display apparatus and mobile terminal | |
| TWI840971B (en) | Electronic device | |
| US11099386B1 (en) | Display device with optical combiner | |
| US20230324740A1 (en) | Optical Systems Having Polarization Recycling Structures | |
| KR101166825B1 (en) | Transflective Type Liquid Crystal Display Device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |