CN218831183U - Display device - Google Patents
Display device Download PDFInfo
- Publication number
- CN218831183U CN218831183U CN202222325585.7U CN202222325585U CN218831183U CN 218831183 U CN218831183 U CN 218831183U CN 202222325585 U CN202222325585 U CN 202222325585U CN 218831183 U CN218831183 U CN 218831183U
- Authority
- CN
- China
- Prior art keywords
- layer
- display device
- light
- substrate
- light emitting
- 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.)
- Active
Links
Images
Landscapes
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The utility model relates to a technical field who shows discloses a display device, include: a substrate base plate having a first surface and a second surface; a structural functional layer located on the first surface of the substrate base plate; and the thermochromic layer is positioned on the first surface of the substrate base plate and used for reducing the transmittance of ambient light. The thermochromic layer arranged on the substrate can block the transmission of near infrared light at high light and high temperature, has small influence on the transmittance of visible light wave bands, and can reduce the temperature of entering the thermochromic layer under the condition of not influencing display, thereby reducing the adverse effect of high temperature on the display device, particularly on outdoor display.
Description
Technical Field
The utility model relates to a technical field who shows, in particular to display device.
Background
With the rapid development of display technologies, display devices such as vehicle-mounted, outdoor and wearable devices are increasingly applied to life. The display effect is affected by strong outdoor sunlight, high temperature and other conditions, such as high reflection, large visual angle color cast, brightness loss, contrast reduction and the like. Therefore, how to improve the poor display caused by high temperature on the display device.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a display device for it is bad to improve because of the demonstration that high temperature caused display device.
In order to achieve the above purpose, the utility model provides the following technical scheme:
a display device, comprising:
a substrate base plate having a first surface and a second surface;
a structural functional layer located on the first surface of the substrate base plate;
and the thermochromic layer is positioned on the first surface of the substrate base plate and is used for reducing the transmittance of ambient light.
The thermochromic layer arranged on the substrate can block the transmission of near infrared light at high light and high temperature, has small influence on the transmittance of visible light wave bands, and can reduce the temperature of entering the thermochromic layer under the condition of not influencing display, thereby reducing the adverse effect of high temperature on the display device, particularly on outdoor display.
Optionally, the structural functional layer comprises: the sensor layer is positioned on the first surface of the substrate base plate, and the light emitting structure layer is positioned on one side, away from the substrate base plate, of the sensor layer;
the thermochromic layer is located between the sensor layer and the light emitting structure layer.
Optionally, the light emitting structure layer includes a pixel defining layer and a light emitting function layer, where the pixel defining layer is located on a side of the sensor layer away from the substrate, the pixel defining layer has a plurality of openings, the light emitting function layer is located in the openings, and a light emitting direction of the light emitting function layer faces away from the substrate;
the thermochromic layer is located on one side of the pixel defining layer facing the substrate.
Optionally, the method further comprises: a light blocking layer located between the thermochromic layer and the sensor layer.
Optionally, the sensor layer has photosensitive devices corresponding to the light-emitting function layers one to one;
the light blocking layer is provided with imaging holes which correspond to the photosensitive devices one by one.
Optionally, an orthographic projection of the thermochromic layer on the substrate covers an orthographic projection of the light emitting structure layer on the substrate.
Optionally, the method further comprises: a back plate layer located between the thermochromic layer and the pixel defining layer.
Optionally, an orthographic projection of the thermochromic layer on the substrate coincides with an orthographic projection of the pixel defining layer on the substrate.
Optionally, the method further comprises: a back sheet layer positioned between the thermochromic layer and the light blocking layer.
Optionally, the structural functional layer comprises a display panel, and the thermochromic layer is located on a light exit side of the display panel.
Drawings
Fig. 1 a-1 b are schematic diagrams illustrating changes of a thermochromic layer in a display device according to an embodiment of the present invention;
FIG. 2 is a graph of the transmittance change of a thermochromic layer at different wavelengths;
fig. 3 is a first schematic structural diagram of a display device according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a display device according to an embodiment of the present invention;
fig. 5 is a third schematic structural diagram of a display device according to an embodiment of the present invention.
Icon: 11-substrate base plate 11; 12-a structural functional layer 12; 13-a thermochromic layer 13; 14-a sensor layer 14; 141-a light sensing device 141; 15-light emitting structure layer 15; 151-pixel defining layer 151; 152-a light emitting functional layer; 16-a light-blocking layer 16; 161-imaging aperture 161; 17-a backsheet layer 17; 2-packaging layer.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1a to 5, an embodiment of the present invention provides a display device, including:
a substrate base plate 11, the substrate base plate 11 having a first surface and a second surface;
a structural functional layer 12 located on a first surface of the substrate base plate 11;
and the thermochromic layer 13 is positioned on the first surface of the substrate base plate 11 and used for reducing the transmittance of ambient light.
The thermochromic layer 13 arranged on the substrate 11 can block the transmission of near infrared light under strong light and high temperature, has small influence on the transmittance of visible light wave bands, and can reduce the temperature of entering the thermochromic layer 13 under the condition of not influencing display, thereby reducing the adverse effect of high temperature on the display device, particularly outdoor display.
As shown in fig. 1a and 1b, the thermochromic material in the thermochromic layer 13 is a material that changes its configuration under strong light irradiation and temperature rise, and exhibits high transmittance at normal temperature, and changes its transmittance in different wavelength bands, for example, blocking infrared light, while not blocking other visible light, when the temperature rise reaches the phase transition temperature.
The embodiment of the utility model provides a material is microgel in the thermochromism layer 13 among the display device, through the functional material of compound different photoresponse wave bands, utilizes the doping tungsten vanadium dioxide (V1-xWxO2 @ SiO2) of nucleocapsid structure and the poly N-isopropyl acrylamide (PNIPAm) of temperature sensitive characteristic to build and form. As shown in fig. 1a, which represents the material change in the thermochromic layer 13 at 20 ℃, the thickness of the arrow represents the magnitude of the light intensity, i.e. the stronger the light intensity, the thicker the arrow, the arrow direction represents the direction of irradiation of the light; when the temperature is lower than the critical phase transition temperature, for example, 20 ℃, the particle size in the thermochromic layer 13 is increased to form a continuous phase, the continuous phase is isotropic, the spectral transmittance is high, and visible light and infrared light in a low-temperature Gao Touming state are highly transmitted; as shown in fig. 1b, which represents the material change in the thermochromic layer 13 at 40 ℃, the thickness of the arrow represents the magnitude of the light intensity, i.e. the stronger the light intensity, the thicker the arrow, the arrow direction represents the direction of irradiation of the light; when 47% of energy is distributed in a near infrared band of 750nm-2500nm under the irradiation of sunlight and the temperature is higher than the critical phase transition temperature, the particle sizes in the system are reduced, the particles are separated from each other, two phases are formed with a water phase, and the particles are anisotropic, so that light rays are refracted and scattered in the system, the spectral transmittance is low, a high-temperature opaque state is shown, high reflection is shown for infrared light, the influence on visible light is small, and the temperature in the thermochromic layer 13 is prevented from rising. Wherein, the phase-change temperature can be adjusted by changing the doping concentration of tungsten, and the method has flexible adjustability.
As shown in fig. 2, the transmittance of the thermochromic layer 13 provided by the embodiment of the present invention at different wavelengths, that is, the transmittance of the light at the wavelength range of 800nm to 2500nm, that is, the transmittance of the light at the wavelength range of 380nm to 780nm does not change significantly, that is, the infrared light is blocked by the thermochromic layer 13, so that the inside entering the thermochromic layer 13 decreases significantly, and the visible light at the wavelength range of 380nm to 780nm has a transmittance of more than 90%, so that the visible light is transmitted through the thermochromic layer 13, and the display effect of the display device is not affected.
In some embodiments, as shown in fig. 3, the structural functional layer 12 comprises a display panel, and the thermochromic layer 13 is located on the light-emitting side of the display panel. That is, a display panel is disposed on the substrate 11, and the thermochromic layer 13 is disposed on the light-emitting side of the display panel, for example, the thermochromic layer 13 can be integrated on the surface of the display panel in a simple form of film or coating, and the material exhibits high transmittance characteristics at normal temperature without affecting the display effect of the display. Under strong sunlight irradiation, the surface temperature of the display panel rises, and the thermochromic layer 13 shows extremely strong reflection characteristics to near infrared light, so that the transmittance of the infrared light is reduced, and the effect of reducing the temperature of the display panel is achieved.
For example, for a transparent display panel, the thermochromic film can be attached to the surface facing the sunlight, so that the display definition is ensured, and the temperature rise in the display panel is well controlled.
For example, in the case of a conventional display device, the thermochromic layer 13 may be coated or attached on the surface of the display panel, so that the temperature in the display panel can be reduced without affecting the display effect under the irradiation of strong light. The display device is not limited to the OLED, but is also applicable to the LCD, the micro-LED, and the mini-LED.
In other specific embodiments, as shown in fig. 4, for a display device having an underscreen fingerprint identification function, the structural function layer 12 includes a sensor layer 14, a light blocking layer 16, a back plate layer 17 and a light emitting structure layer 15, the sensor layer 14 is located on the first surface of the substrate 11, the sensor layer 14 has a sensing device, the light blocking layer 16 is disposed on a side of the sensor layer 14 away from the substrate 11, the light blocking layer 16 has an imaging hole 161, the back plate layer 17 is disposed on a side of the light blocking layer 16 away from the substrate 11, the light emitting structure layer 15 is disposed on a side of the back plate layer 17 away from the substrate 11, and the encapsulation layer 2 is located on a side of the light emitting structure layer 15 facing away from the light emitting side. The thermochromic layer 13 is located between the sensor layer 14 and the light emitting structure layer 15.
Specifically, the light emitting structure layer 15 includes a pixel defining layer 151 and a light emitting function layer 152, wherein the pixel defining layer 151 is located on a side of the sensor layer 14 facing away from the substrate 11, the pixel defining layer 151 has a plurality of openings, the light emitting function layer 152 is located in the openings, and a light emitting direction of the light emitting function layer 152 faces away from the substrate 11; the thermochromic layer 13 is located on a side of the pixel defining layer 151 facing the substrate 11. The sensor layer 14 has photosensitive devices 141 in one-to-one correspondence with the light-emitting functional layers 152; the light blocking layer 16 has imaging holes 161 corresponding to the light sensing devices 141 one to one. The orthographic projection of the thermochromic layer 13 on the base substrate 11 covers the orthographic projection of the light emitting structure layer 15 on the base substrate 11.
The working principle of the fingerprint identification under the screen is that light emitted by the light emitting structure layer 15 reaches a finger to be reflected, the reflected light sequentially passes through the packaging layer 2, the light emitting structure layer 15, the back plate layer 17, the thermochromic layer 13 and the imaging hole 161 in the light blocking layer 16 to reach the photosensitive device 141 of the sensor layer 14, so that the fingerprint identification is completed, and because the thermochromic layer 13 blocks infrared light when the temperature exceeds the phase change temperature, and other visible light is not blocked, the visible light is not influenced to be obtained by the photosensitive device 141.
In other specific embodiments, as shown in fig. 5, for a display device having an underscreen fingerprint identification function, the structural functional layer 12 includes a sensor layer 14, a light blocking layer 16, a back plate layer 17 and a light emitting structural layer 15, the sensor layer 14 is located on a first surface of the substrate 11, the sensor layer 14 has a sensing device, the light blocking layer 16 is disposed on a side of the sensor layer 14 away from the substrate 11, the light blocking layer 16 has an imaging hole 161, the light blocking layer 16 is disposed on a side of the light blocking layer 16 away from the substrate 11 and is provided with the back plate layer 17, the light emitting structural layer 15 is disposed on a side of the back plate layer 17 away from the substrate 11, the light emitting structural layer 15 includes a pixel defining layer 151 and a light emitting functional layer 152, wherein the pixel defining layer 151 is located on a side of the sensor layer 14 away from the substrate 11, the pixel defining layer 151 has a plurality of openings, the light emitting functional layer 152 is located in the openings, a light emitting direction of the light emitting functional layer 152 is away from the color change substrate 11, the light emitting layer 13 is located at a bottom of the pixel defining layer 151, and the encapsulation layer 2 is located on a light emitting side of the light emitting structural layer 15.
Specifically, the sensor layer 14 has photosensitive devices 141 in one-to-one correspondence with the light-emitting function layers 152; the light blocking layer 16 has imaging holes 161 corresponding to the light sensing devices 141 one to one. An orthogonal projection of the thermochromic layer 13 on the base substrate 11 coincides with an orthogonal projection of the pixel defining layer 151 on the base substrate 11.
The working principle of the fingerprint identification under the screen is that light emitted by the light emitting structure layer 15 reaches a finger to be reflected, the reflected light sequentially passes through the packaging layer 2, the light emitting structure layer 15, the thermochromic layer 13, the back plate layer 17 and the imaging hole 161 in the light blocking layer 16 to reach the photosensitive device 141 of the sensor layer 14, so that the fingerprint identification is completed, and because the thermochromic layer 13 blocks infrared light when the temperature exceeds the phase change temperature, and other visible light is not blocked, the visible light is not influenced to be obtained by the photosensitive device 141.
It will be apparent to those skilled in the art that various changes and modifications may be made to the embodiments of the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A display device, comprising:
a substrate base plate having a first surface and a second surface;
a structural functional layer located on the first surface of the substrate base plate;
and the thermochromic layer is positioned on the first surface of the substrate base plate and used for reducing the transmittance of ambient light.
2. The display device of claim 1, wherein the structural functional layers comprise: the sensor layer is positioned on the first surface of the substrate base plate, and the light emitting structure layer is positioned on one side, away from the substrate base plate, of the sensor layer;
the thermochromic layer is located between the sensor layer and the light emitting structure layer.
3. The display device according to claim 2, wherein the light emitting structure layer comprises a pixel defining layer and a light emitting function layer, wherein the pixel defining layer is located on a side of the sensor layer facing away from the substrate, the pixel defining layer has a plurality of openings, the light emitting function layer is located in the openings, and a light emitting direction of the light emitting function layer faces away from the substrate;
the thermochromic layer is located on one side, facing the substrate base plate, of the pixel defining layer.
4. The display device of claim 3, wherein the structural functional layer further comprises: a light blocking layer located between the thermochromic layer and the sensor layer.
5. The display device according to claim 4, wherein the sensor layer has photosensitive devices in one-to-one correspondence with the light emitting function layers;
the light blocking layer is provided with imaging holes which correspond to the photosensitive devices one by one.
6. The display device according to claim 5, wherein an orthographic projection of the thermochromic layer on the substrate is overlaid with an orthographic projection of the light emitting structure layer on the substrate.
7. The display device of claim 6, wherein the structural functional layer further comprises: a back plate layer located between the thermochromic layer and the pixel defining layer.
8. A display device as claimed in claim 5, characterised in that the orthographic projection of the thermochromic layer on the substrate coincides with the orthographic projection of the pixel defining layer on the substrate.
9. The display device according to claim 8, wherein the structural functional layer further comprises: a back sheet layer positioned between the thermochromic layer and the light blocking layer.
10. The display device according to claim 1, wherein the structural functional layer comprises a display panel, and the thermochromic layer is located on a light exit side of the display panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222325585.7U CN218831183U (en) | 2022-08-31 | 2022-08-31 | Display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222325585.7U CN218831183U (en) | 2022-08-31 | 2022-08-31 | Display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218831183U true CN218831183U (en) | 2023-04-07 |
Family
ID=87043405
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222325585.7U Active CN218831183U (en) | 2022-08-31 | 2022-08-31 | Display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218831183U (en) |
-
2022
- 2022-08-31 CN CN202222325585.7U patent/CN218831183U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP7156808B2 (en) | Display device with input detection unit | |
| US10872922B2 (en) | Display substrate and method for manufacturing the same, fingerprint recognition device and display device | |
| CN106773229B (en) | A kind of fingerprint recognition display device and its driving method | |
| CN108983487B (en) | Liquid crystal display panel and display device | |
| KR101975309B1 (en) | Organic light emitting display device and manufacturing method thereof | |
| WO2021012428A1 (en) | Display panel and display device | |
| CN111345013B (en) | Terminal | |
| EP3913523B1 (en) | Fingerprint recognition apparatus and electronic device | |
| CN104020896B (en) | Optical touch screen based on grating | |
| KR102440471B1 (en) | Display apparatus and manufacturimg method thereof | |
| CN104141896B (en) | Light source module | |
| CN106971181B (en) | Display panel and display device | |
| CN102866446B (en) | Optical touch display device and color filter thereof | |
| CN107452283A (en) | Display module and its manufacture method, display device | |
| CN211180467U (en) | Liquid crystal display device having a plurality of pixel electrodes | |
| KR20150014656A (en) | Display panel having a polarizer | |
| CN108695345B (en) | Image Sensors and Imaging Modules | |
| TWI706553B (en) | Light sensor and display apparatus | |
| CN108663838B (en) | Touch panel and display device | |
| CN218831183U (en) | Display device | |
| KR102076962B1 (en) | Organic light emitting display device and manufacturing method thereof | |
| CN216978134U (en) | Ambient light sensor and electronic device | |
| CN204925434U (en) | Product is dressed to blue optical attenuator spare, base plate, display and intelligence | |
| CN114740994A (en) | Display screen and display device | |
| CN105629368A (en) | Polaroid and display device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |