CN110796977B - Display device with optical wireless communication function - Google Patents
Display device with optical wireless communication function Download PDFInfo
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- CN110796977B CN110796977B CN201810862179.XA CN201810862179A CN110796977B CN 110796977 B CN110796977 B CN 110796977B CN 201810862179 A CN201810862179 A CN 201810862179A CN 110796977 B CN110796977 B CN 110796977B
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/3406—Control of illumination source
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/11—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
- H04B10/114—Indoor or close-range type systems
- H04B10/116—Visible light communication
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Abstract
The invention provides a display device with an optical wireless communication function, which comprises a display panel and a control circuit. The display panel comprises a display pixel area for displaying images and an infrared light signal pixel area for sending optical signals, wherein the light transmittance of the display pixel area for a visible light wave area is larger than that of the display pixel area for an infrared light wave area, and the light transmittance of the infrared light signal pixel area for the infrared light wave area is larger than that of the display pixel area for the visible light wave area. The control circuit is used for providing control signals required by the display panel when displaying the image and transmitting the optical signals.
Description
Technical Field
The present invention relates to a display device with an optical wireless communication function, and more particularly, to a display device with an optical wireless communication function using infrared light.
Background
Compared with the traditional incandescent bulb, the light emitting diode (light emitting diode, LED) has the advantages of low power consumption, long service life of the element, small volume, no need of warming lamp time, high reaction speed and the like, and can be manufactured into tiny or array elements according to application requirements. In addition to outdoor displays, traffic lights, and liquid crystal display backlights of various consumer electronic products such as mobile phones, notebook computers, or televisions, light emitting diodes are widely used in various indoor and outdoor lighting devices to replace fluorescent tubes or incandescent bulbs, etc.
With the great demand and development of global communication, optical wireless communication becomes an important ring for deploying a communication system, and the LED visible light transmission technology utilizes LEDs to emit high-speed flickering signals which are not perceived by naked eyes, so as to transmit optical signals in a wireless mode. In addition to the advantage of large transmission capacity, optical wireless communication is much safer than conventional microwave wireless systems because the beam of optical wireless communication is narrow and very directional. In addition, the visible light wireless communication can avoid the interference of electromagnetic waves of general wireless local area network or high frequency wireless transmission on human body and peripheral electronic equipment, and can replace a wireless base station, and has the characteristic of high safety.
The existing optical wireless communication system adopts an LED backlight signal modulation technology, a display at a transmitting end transmits rapid flickering digital signals (logic 1 and logic 0) by controlling the update frequency of an LED backlight module, and a receiving end device is provided with an image sensor equipped with a special application program to receive and identify the digital signals which cannot be identified by human eyes. However, the above-mentioned backlight signal modulation technique is operated at a high frequency, which may not only increase the power consumption of the backlight module and affect the brightness of the image, but also may not modulate the backlight in a low brightness backlight usage mode or cause the display to fail to correctly display the preset image.
Disclosure of Invention
The invention provides a display device with an optical wireless communication function, which comprises a display panel and a control circuit. The display panel comprises a display pixel area for displaying an image and an infrared light signal pixel area for transmitting an optical signal, wherein the light transmittance of the display pixel area for a visible light wave area is larger than that for an infrared light wave area, and the light transmittance of the infrared light signal pixel area for the infrared light wave area is larger than that for the visible light wave area. The control circuit is used for providing control signals required by the display panel when displaying the image and transmitting the optical signals.
Drawings
Fig. 1 is a functional block diagram of a display device with an optical wireless communication function according to an embodiment of the invention.
Fig. 2 is an external view of a display device according to an embodiment of the invention.
Fig. 3 is a timing chart of a driving method of a display device according to an embodiment of the invention.
Fig. 4 is a schematic diagram illustrating an implementation manner of a display panel of a display device according to an embodiment of the invention.
Fig. 5 is a schematic diagram illustrating an implementation manner of a display panel of a display device according to another embodiment of the invention.
Fig. 6 is a schematic diagram illustrating an implementation manner of a display panel of a display device according to another embodiment of the invention.
Fig. 7 is a schematic diagram illustrating an implementation manner of a display panel of a display device according to another embodiment of the invention.
Fig. 8 is a schematic diagram illustrating an implementation manner of a display panel of a display device according to another embodiment of the invention.
Reference numerals illustrate:
10: a display panel; l (L) R : red light;
12: displaying a pixel region; l (L) G : green light;
14: an infrared light signal pixel region; l (L) B : blue light;
20: a control circuit; l (L) IR : infrared light;
100: a display device; a is that R : red light from the light emitter;
110: a color filter substrate; a is that G : green light from the light emitter;
120: a thin film transistor substrate; a is that B : blue light self-luminous body;
130: a liquid crystal layer; a is that W : white light self-luminous body;
140: a backlight module; a is that IR : infrared light from the light emitting body;
150: an infrared light guide plate; LED (light emitting diode) W : white light emitting diodes;
210: an upper substrate; LED (light emitting diode) IR : an infrared light emitting diode;
220: a lower substrate; f (F) R 、F G 、F B : a color filter;
230: an insulating layer; f (F) IR : a visible light filter;
r: red light pixels; d (D) IMAGE : image data;
g: a green light pixel; d (D) SIGNAL : an optical signal;
b: blue light pixels; SW, SW R 、SW G 、SW B 、SW IR : a switch;
IR: an infrared light pixel; s is S R 、S G 、S B 、S IR : a control signal.
L: light rays;
Detailed Description
In order to make the above features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below.
Fig. 1 is a functional block diagram of a display device 100 with optical wireless communication function according to an embodiment of the invention. The display device 100 includes a display panel 10 and a control circuit 20. The display panel 10 includes a display pixel region 12 and an infrared light signal pixel region 14. The display pixel region 12 has a light transmittance in the visible light wave region (e.g., a wavelength range of 0.35-0.85 um) that is greater than a light transmittance in the infrared light wave region (e.g., a wavelength range of 0.75-1000 um), and the infrared light signal pixel region 14 has a light transmittance in the infrared light wave region that is greater than a light transmittance in the visible light wave region. The display panel 10 can display images in the visible light in the display pixel region 12 and transmit optical signals (digital logic 1 and logic 0) in the infrared light signal pixel region 14 in the infrared light. The control circuit 20 is used for providing control signals required by the display panel 10 when displaying images and transmitting optical signals, so that the signal update frequency in the display pixel area 12 is different from the signal update frequency in the infrared light signal pixel area 14.
In another embodiment of the present invention, the light transmittance of the display pixel region 12 for the infrared light wave region is at least less than 50% of the original energy attenuation of the incident light, and the light transmittance of the infrared light signal pixel region 14 for the visible light wave region is at least less than 50% of the original energy attenuation of the incident light.
Fig. 2 is an external view of a display device 100 according to an embodiment of the invention. In this embodiment, a plurality of red pixels R, green pixels G, and blue pixels B are disposed in the display pixel region 12, and a plurality of infrared pixels IR are disposed in the infrared light signal pixel region 14. In the embodiment of the present invention, the total area of the display pixel region 12 is larger than the total area of the infrared light signal pixel region 14, but the shapes and layout of the red light pixels R, the green light pixels G, the blue light pixels and the infrared light pixels IR do not limit the scope of the present invention.
Fig. 3 is a timing chart illustrating a driving method of the display device 100 according to an embodiment of the invention. Control circuit 20 can generate a control signal S R To drive red pixels R and generate control signals S G To drive green pixels G and generate control signals S B To drive blue pixel B and generate control signal S IR To drive the infrared light pixels IR. As shown in fig. 3, the display pixel region 12 provides display image data D IMAGE The update frequency of (2) is different from the optical signal data D provided by the infrared light signal pixel region 14 SIGNAL Is used for updating the frequency of the update.
Fig. 4 is a schematic diagram illustrating an implementation manner of the display panel 10 of the display device 100 according to an embodiment of the invention. In this embodiment, the display panel 10 is a liquid crystal module (liquid crystal module, LCM) comprising a color filter substrate 110, a thin film transistor (thin film transistor, TFT) substrate 120, a liquid crystal layer 130, and a backlight module 140. The liquid crystal layer 130 is disposed between the color filter substrate 110 and the thin film transistor substrate 120. The backlight module 140 is disposed on the light incident side of the thin film transistor substrate 120 and comprises a white light emitting diode LED W And an infrared light emitting diode LED IR To provide light L at the light exit side. The thin film transistor substrate 120 receives the light L at the light incident side, and a plurality of switches SW are disposed at positions corresponding to each of the display pixel region 12 and the infrared light signal pixel region 14 on the light emergent side, which can control the transmittance of the light L at the corresponding pixels. The color filter substrate 110 is provided with a plurality of color filters F on the light incident side corresponding to each pixel in the display pixel region 12 R 、F G And F B And a plurality of visible light filters F are arranged on the light incident side corresponding to each pixel in the infrared light signal pixel region 14 IR . For simplicity of illustration, FIG. 4 shows only three color filters F R 、F G 、F B And a visible light filter F IR . Color filter F R 、F G 、F B And a visible light filter F IR Allowing the components of a specific wavelength range in the light L to pass through and filtering out the components of other wavelength ranges in the light L, wherein the filter F R Can let red light L in light L R Through (wavelength range about 625nm to 750 nm), the filter F G Can let green light L in light L G Through (wavelength range about 500 nm-565 nm), filter F B Blue light L in the light L can be allowed B Through (wavelength range about 440nm to 485 nm), and visible light filter F IR Let infrared light L in light L IR Pass (wavelength greater than 850 nm). The arrangement of the liquid crystal molecules in the liquid crystal layer 130 can be changed by powering on the color filter substrate 110 and the thin film transistor substrate 120, so as to adjust the polarization of the light L, and the red light L can be adjusted by matching the on or off of the switch SW R Green light L G Blue light L B To display pictures with different light intensities and colors, and adjust the infrared light L IR To transmit light (logic 1) dark (logic 0) optical signals.
In the embodiment shown in FIG. 4, the control circuit 20 (not shown in FIG. 4) can generate a control signal S for turning on the switch SW R 、S G 、S B 、S IR To adjust the red light L respectively R Green light L G Blue light L B And infrared light L IR Such that the signal update frequency in the display pixel region 12 is different from the signal update frequency in the infrared light signal pixel region 14. Alternatively, the control circuit 20 (not shown in FIG. 4) may further generate a driving signal for driving the white light LED and the infrared light LED, respectively IR Respectively adjusting the red light L by modulating the light source of the backlight module 140 R Green light L G Blue light L B And infrared light L IR Such that the signal update frequency in the display pixel region 12 is different from the signal update frequency in the infrared light signal pixel region 14.
Fig. 5 is a schematic diagram illustrating an implementation manner of the display panel 10 of the display device 100 according to another embodiment of the invention. In this embodiment, the display panel 10 is a liquid crystal module, which includes a color filter substrate 110, a thin film transistor substrate 120, a liquid crystal layer 130, a backlight module 140, and an infrared light guide plate 150. The liquid crystal layer 130 is disposed between the color filter substrate 110 and the thin film transistor substrate 120. The backlight module 140 is disposed on the light incident side of the thin film transistor substrate 120 and comprises a white light emitting deviceDiode LED W To provide light L. The thin film transistor substrate 120 receives the light L at the light incident side, and a plurality of switches SW are disposed at the light emergent side corresponding to each pixel in the display pixel region 12, which can control the transmittance of the light L at the corresponding pixel. The color filter substrate 110 is provided with a plurality of color filters F in a region corresponding to the display pixel region 12 on the light incident side R 、F G And F B . For simplicity of illustration, FIG. 5 shows only three color filters F R 、F G 、F B . Color filter F R 、F G 、F B Allowing the components of a specific wavelength range in the light L to pass through and filtering out the components of other wavelength ranges in the light L, wherein the filter F R Can let red light L in light L R Through (wavelength range about 625nm to 750 nm), the filter F G Can let green light L in light L G Pass through (wavelength range about 500nm to 565 nm), and filter F B Blue light L in the light L can be allowed B Through (wavelength range of about 440nm to 485 nm). The infrared light guide plate 150 is disposed on the light emitting side of the color filter substrate 110, and can be provided with an infrared light emitting diode LED on its side IR Emitted red light L IR And is directed to the light-emitting surface of the infrared light guide plate 150. Meanwhile, the infrared light guide plate 150 may be made of a transparent material having high transmittance to visible light, so that the red light L is not affected R Green light L G And blue light L B Is a light emitting process of (1). The arrangement of the liquid crystal molecules in the liquid crystal layer 130 can be changed by powering on the color filter substrate 110 and the thin film transistor substrate 120, so as to adjust the polarization of the light L, and the red light L can be adjusted by matching the on or off of the switch SW R Green light L G Blue light L B To display pictures of different light intensities and colors. On the other hand, by emitting light from infrared light IR Light source modulation adjustable infrared light L IR And thus sends out a bright (logic 1) dark (logic 0) optical signal.
In the embodiment shown in FIG. 5, the control circuit 20 (not shown in FIG. 5) may generate the on-switch SW and the infrared light emitting diode LED IR Control signal S of (2) R 、S G 、S B 、S IR To adjust the red light L respectively R Green light L G Blue light L B And infrared light L IR Such that the signal update frequency in the display pixel region 12 is different from the signal update frequency in the infrared light signal pixel region 14.
Fig. 6 is a schematic diagram illustrating an implementation manner of the display panel 10 of the display device 100 according to another embodiment of the invention. In this embodiment, the display panel 10 is a self-luminous panel, which includes an upper substrate 210, a lower substrate 220, an insulating layer 230, and a plurality of red self-luminous bodies A R Multiple green light self-luminous bodies A G Multiple blue light self-luminous bodies A B Multiple infrared light self-luminous bodies A IR And a plurality of switches SW R 、SW G 、SW B And SW IR . For simplicity of illustration, FIG. 6 shows only a single red light emitter A R Single green light self-luminous body A G Single blue light self-luminous body A B Single infrared light self-luminous body A IR And 4 switches SW R 、SW G 、SW B And SW IR . The insulating layer 230, each self-luminous body, and each switch are formed between the upper substrate 210 and the lower substrate 220. Switch SW R 、SW G And SW B A switch SW disposed on the lower substrate 220 corresponding to each pixel in the display pixel region 12 IR Is disposed on the lower substrate 220 corresponding to each pixel in the infrared light signal pixel region 14. An insulating layer 230 is formed on the lower substrate 220 to cover the switch SW R 、SW G 、SW B And SW IR . Red light self-luminous body A R Green light self-luminous body A G And blue light self-luminous body A B Is disposed on the insulating layer 230 and corresponds to each pixel in the display pixel region 12, and is respectively formed by a switch SW R 、SW G And SW B To control its red light L R Green light L G And blue light L B Is a light-emitting frequency of the light source. Infrared light self-luminous body A IR Is disposed on the insulating layer 230 corresponding to each pixel in the infrared light signal pixel region 14, and is formed by a switch SW IR To control the infrared light L thereof IR Is emitted by (a) lightFrequency. The control circuit 20 (not shown in FIG. 6) can generate the on-switch SW R 、SW G 、SW B And SW IR Control signal S of (2) R 、S G 、S B 、S IR To change the red light from the luminous body A R Green light self-luminous body A G Blue light self-luminous body A B And infrared light self-luminous body A IR To adjust the red light L R Green light L G Blue light L B To display pictures with different light intensities and colors, and adjust the infrared light L IR To transmit light (logic 1) dark (logic 0) optical signals and to cause the signal update frequency within display pixel region 12 to be different from the signal update frequency within infrared light signal pixel region 14.
Fig. 7 is a schematic diagram illustrating an implementation manner of the display panel 10 of the display device 100 according to another embodiment of the invention. The display device 100 includes an upper substrate 210, a lower substrate 220, an insulating layer 230, and a plurality of red light self-luminous bodies A R Multiple green light self-luminous bodies A G Multiple blue light self-luminous bodies A B Multiple white light self-luminous bodies A W A visible light filter F IR And a plurality of switches SW R 、SW G 、SW B And SW IR . For simplicity of illustration, FIG. 7 shows only a single red light emitter A R Single green light self-luminous body A G Single blue light self-luminous body A B Single white light self-luminous body A W And 4 switches SW R 、SW G 、SW B And SW IR . Switch SW R 、SW G And SW B A switch SW disposed on the lower substrate 220 in a region corresponding to the display pixel region 12 IR Is disposed on the lower substrate 220 in a region corresponding to the infrared light signal pixel region 14. An insulating layer 230 is formed on the lower substrate 220 to cover the switch SW R 、SW G 、SW B And SW IR . Red light self-luminous body A R Green light self-luminous body A G And blue light self-luminous body A B Is disposed on the insulating layer 230 in the region corresponding to the display pixel region 12 and is respectively formed by the switches SW R 、SW G And SW B To control its red light L R Green light L G And blue light L B Is a light-emitting frequency of the light source. White light self-luminous body A W Is disposed on the insulating layer 230 in a region corresponding to the infrared light signal pixel region 14, and emits white light passing through the visible light filter F IR Only infrared light L IR Can pass through (wavelength greater than 850 nm) by switch SW IR I.e. infrared light L can be controlled IR Is a light-emitting frequency of the light source. The control circuit 20 (not shown in FIG. 7) can generate the on-switch SW R 、SW G 、SW B And SW IR Control signal S of (2) R 、S G 、S B 、S IR To change the red light from the luminous body A R Green light self-luminous body A G Blue light self-luminous body A B And white light self-luminous body A W To adjust the red light L R Green light L G Blue light L B To display pictures with different light intensities and colors, and adjust the infrared light L IR To transmit light (logic 1) dark (logic 0) optical signals and to cause the signal update frequency within display pixel region 12 to be different from the signal update frequency within infrared light signal pixel region 14.
Fig. 8 is a schematic diagram illustrating an implementation manner of the display panel 10 of the display device 100 according to another embodiment of the invention. In this embodiment, the display panel 10 is a self-luminous panel, which includes an upper substrate 210, a lower substrate 220, an insulating layer 230, and a plurality of red self-luminous bodies A R Multiple green light self-luminous bodies A G Multiple blue light self-luminous bodies A B Multiple infrared light self-luminous bodies A IR A plurality of switches SW R 、SW G 、SW B And an infrared light guide plate 150. For simplicity of illustration, FIG. 8 shows only a single red light emitter A R Single green light self-luminous body A G Single blue light self-luminous body A B Single infrared light self-luminous body A IR And 3 switches SW R 、SW G And SW B . Switch SW R 、SW G And SW B Is disposed on the lower substrate 220 in an area corresponding to the display pixel area 12. An insulating layer 230 is formed on the lower substrate 220 to coverSwitch SW R 、SW G And SW B . Red light self-luminous body A R Green light self-luminous body A G And blue light self-luminous body A B Is disposed on the insulating layer 230 in the region corresponding to the display pixel region 12 and is respectively formed by the switches SW R 、SW G And SW B To control its red light L R Green light L G And blue light L B Is a light-emitting frequency of the light source. The infrared light guide plate 150 is disposed on the light emitting surface of the upper substrate 210, and can emit infrared light from the light emitting body A disposed on the side thereof IR Emitted red light L IR And is directed to the light-emitting surface of the infrared light guide plate 150. Meanwhile, the infrared light guide plate 150 has high transmittance to visible light, so red light L is not affected R Green light L G And blue light L B Is a light emitting process of (1). The control circuit 20 (not shown in FIG. 8) can generate the on-switch SW R 、SW G And SW B Control signal S of (2) R 、S G And S is B To change the red light from the luminous body A R Green light self-luminous body A G And blue light self-luminous body A B To adjust the red light L R Green light L G Blue light L B To display pictures with different light intensities and colors, and to generate the infrared light self-luminous body A IR Control signal S for modulating light source IR To transmit an optical signal that is bright (logic 1) and dark (logic 0) and to cause the signal update frequency in the display pixel area 12 to be different from the signal update frequency in the infrared light signal pixel area 14.
In the embodiment of the invention, the red light self-luminous body A R Green light self-luminous body A G Blue light self-luminous body A B White light self-luminous body A W And infrared light self-luminous body A IR May be organic light emitting diodes (organic light emitting diode, OLED) or miniaturized light emitting diodes (micro LEDs). However, the kind of the self-luminous body does not limit the scope of the present invention.
In summary, the present invention provides a display device with an optical wireless communication function, which displays an image frame with visible light in a display pixel area of a display panel, and transmits an optical signal with infrared light in an infrared light signal pixel area of the display panel. Therefore, the invention can increase the information transmission quantity of optical communication without affecting the display of the image picture.
The foregoing description is only of the preferred embodiments of the invention, and all changes and modifications that come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Claims (10)
1. A display device with optical wireless communication function, comprising:
a display panel, comprising:
a display pixel area for displaying an image, wherein the light transmittance of the display pixel area for a visible light wave area is greater than the light transmittance for an infrared light wave area; and
an infrared light signal pixel region for transmitting an optical signal, wherein the light transmittance of the infrared light signal pixel region for the infrared light wave region is greater than the light transmittance for the visible light wave region; and
a control circuit for providing control signals required by the display panel when displaying the image and transmitting the optical signals;
for a first incident light, the light transmittance of the display pixel area in the infrared light wave area is at least less than 50% of the original energy attenuation of the first incident light; and is also provided with
For a second incident light, the light transmittance of the infrared light signal pixel region in the visible light wave region is at least less than 50% of the original energy attenuation of the second incident light.
2. The display device of claim 1, wherein a total area of the display pixel area is greater than a total area of the infrared light signal pixel area.
3. The display device of claim 1, wherein the control circuit provides control signals required by the display panel to display the image and transmit the optical signals such that a signal update frequency in the display pixel area is different from a signal update frequency in the infrared light signal pixel area.
4. The display device according to claim 1, wherein:
the display panel includes:
a backlight module including a white light LED and an infrared light LED for providing a light;
a thin film transistor substrate which receives the light on a first light-in side and is provided with a plurality of switches on a first light-out side corresponding to each pixel in the display pixel area and the infrared light signal pixel area so as to control the transmittance of the light at the corresponding pixel;
a color filter substrate, which is provided with a plurality of color filters on a first light-in side corresponding to the display pixel area, and is provided with at least one visible light filter on the first light-in side corresponding to the infrared light signal pixel area; and
a liquid crystal layer arranged between the color filter substrate and the thin film transistor substrate;
a first color filter of the plurality of color filters allows a red light of the light to pass through;
a second color filter of the plurality of color filters allows a green light of the light to pass through;
a third color filter of the plurality of color filters allows a blue light of the light to pass through; and is also provided with
The visible light filter allows an infrared light in the light to pass through.
5. The display device according to claim 1, wherein:
the display panel includes:
a backlight module including a white light LED for providing a light;
a thin film transistor substrate for receiving the light at a first light incident side and providing a plurality of switches at a position corresponding to each pixel in the display pixel region on a first light emergent side so as to control the transmittance of the light at the position corresponding to the pixel;
a color filter substrate provided with a plurality of color filters on a second light incident side corresponding to the display pixel region;
a liquid crystal layer arranged between the color filter substrate and the thin film transistor substrate; and
the infrared light guide plate is arranged on a second light emitting side of the color filter substrate and used for guiding infrared light emitted by an infrared light emitting diode arranged on one side of the infrared light guide plate to a third light emitting side for emission;
a first color filter of the plurality of color filters allows a red light of the light to pass through;
a second color filter of the plurality of color filters allows a green light of the light to pass through;
a third color filter of the plurality of color filters allows a blue light of the light to pass through; and is also provided with
The infrared light guide plate receives the red light, the green light and the blue light at a third light incident side, and passes the red light, the green light and the blue light to be emitted from the third light emergent side.
6. The display device according to claim 1, wherein the display panel includes:
a substrate;
the red light self-luminous body, the green light self-luminous body and the blue light self-luminous body are arranged at the positions corresponding to the display pixel areas and are used for providing red light, green light and blue light respectively;
an infrared light self-luminous body, which is arranged at the position corresponding to the infrared light signal pixel area and is used for providing infrared light;
the first switch, the second switch, the third switch and the fourth switch are respectively arranged on the substrate and correspond to the red light self-luminous body, the green light self-luminous body, the blue light self-luminous body and the infrared light self-luminous body, and are respectively used for controlling the light emitting frequencies of the red light, the green light, the blue light and the infrared light; and
an insulating layer is arranged between each self-luminous body and each switch.
7. The display device according to claim 1, wherein the display panel includes:
a substrate;
the red light self-luminous body, the green light self-luminous body and the blue light self-luminous body are arranged at the positions corresponding to the display pixel areas and are used for providing red light, green light and blue light respectively;
a white light self-luminous body, which is arranged at the position corresponding to the infrared light signal pixel area and is used for providing white light;
the visible light filter is arranged on the light emitting side of the white light self-luminous body so as to allow infrared light in the white light to pass through;
the first switch, the second switch, the third switch and the fourth switch are respectively arranged on the substrate and correspond to the red light self-luminous body, the green light self-luminous body, the blue light self-luminous body and the white light self-luminous body, and are respectively used for controlling the light emitting frequencies of the red light, the green light, the blue light and the white light; and
an insulating layer is arranged between each self-luminous body and each switch.
8. The display device according to claim 1, wherein the display panel includes:
a substrate;
the red light self-luminous body, the green light self-luminous body and the blue light self-luminous body are arranged at the positions corresponding to the display pixel areas and are used for providing red light, green light and blue light respectively;
the first switch, the second switch and the third switch are respectively arranged on the substrate and correspond to the red light self-luminous body, the green light self-luminous body and the blue light self-luminous body and are respectively used for controlling the light emitting frequencies of the red light, the green light and the blue light;
an insulating layer arranged between each self-luminous body and each switch; and
and the infrared light guide plate is used for guiding infrared light emitted by an infrared light emitting body arranged at one side edge of the infrared light guide plate to the advancing directions of the red light, the green light and the blue light.
9. The display device of any one of claims 4 to 8, wherein the control circuit is further configured to provide a plurality of control signals for turning on the plurality of switches such that a signal update frequency in the display pixel region is different from a signal update frequency in the infrared light signal pixel region.
10. The display device of any one of claims 4 to 8, wherein the control circuit is further configured to provide a plurality of control signals for modulating the ir led, the ir led or the white led such that a signal update frequency in the display pixel region is different from a signal update frequency in the ir signal pixel region.
Priority Applications (1)
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