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CN110796977B - Display device with optical wireless communication function - Google Patents

Display device with optical wireless communication function Download PDF

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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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light
self
luminous body
infrared
infrared light
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CN110796977A (en
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向瑞杰
陈志强
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Acer Inc
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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
    • 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
    • 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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  • Optical Communication System (AREA)
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Abstract

本发明提供一种具光学无线通信功能的显示装置，包含一显示面板和一控制电路。显示面板包含用来显示影像的显示像素区域和用来发送光学信号的红外光信号像素区域，其中显示像素区域对可见光波区的光穿透率大于对红外光波区的光穿透率，而红外光信号像素区域对红外光波区的光穿透率大于对可见光波区的光穿透率。控制电路用来提供显示面板在显示该影像和发送光学信号时所需的控制信号。

Figure 201810862179

The invention provides a display device with optical wireless communication function, which includes a display panel and a control circuit. The display panel includes 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 to the visible light wave region is greater than that to the infrared light wave region, while the infrared The light transmittance of the light signal pixel area to the infrared light wave region is greater than the light transmittance to the visible light wave region. The control circuit is used for providing the control signal required by the display panel when displaying the image and sending the optical signal.

Figure 201810862179

Description

具光学无线通信功能的显示装置Display device with optical wireless communication function

技术领域technical field

本发明相关于一种具光学无线通信功能的显示装置，尤指一种利用红外光来进行光学无线通信功能的显示装置。The present invention relates to a display device with optical wireless communication function, in particular to a display device with optical wireless communication function using infrared light.

背景技术Background technique

相较于传统的白炽灯泡，发光二极管(light emitting diode，LED)具有耗电量低、元件寿命长、体积小、无需暖灯时间和反应速度快等优点，并可配合应用需求而制成极小或阵列式的元件。除了户外显示器、交通信号灯之外、各种消费性电子产品，例如移动电话、笔记本电脑或电视的液晶显示屏幕背光源之外，发光二极管亦广泛地被应用于各种室内室外照明装置，以取代日光灯管或白炽灯泡等。Compared with traditional incandescent light bulbs, light emitting diodes (light emitting diodes, LEDs) have the advantages of low power consumption, long component life, small size, no need for warm-up time and fast response, and can be made into extremely Small or arrayed components. In addition to outdoor displays, traffic lights, various consumer electronics products, such as mobile phones, laptops or LCD screen backlights for TVs, LEDs are also widely used in various indoor and outdoor lighting devices to replace Fluorescent tubes or incandescent bulbs, etc.

随全球通信大量需求与发展，光学无线通信成为部署通信系统的重要一环，LED可见光传输技术是利用LED发出肉眼感觉不到的高速闪烁信号，进而以无线方式来传输光学信号。光学无线通信除了具有传输容量大的优点外，由于光学无线通信的波束很窄又非常定向，因此其保密性比通常的微波无线系统安全得多。此外，可见光无线通信可避免一般无线区域网路或高频无线传输的电磁波对人体与周边电子设备造成干扰的影响，并且可代替无线基地台，同时具备安全性高的特点。With the large demand and development of global communications, optical wireless communication has become an important part of the deployment of communication systems. LED visible light transmission technology uses LEDs to send out high-speed flickering signals that cannot be felt by the naked eye, and then transmits optical signals wirelessly. In addition to the advantages of large transmission capacity, optical wireless communication has a very narrow beam and is very directional, so its confidentiality is much safer than the usual microwave wireless system. In addition, visible light wireless communication can avoid the interference of the general wireless area network or high-frequency wireless transmission of electromagnetic waves on the human body and peripheral electronic equipment, and can replace wireless base stations, and has the characteristics of high security.

现有光学无线通信系统是采用LED背光信号调变技术，发送端的显示器通过控制LED背光模块的更新频率以发送快速闪烁的数字信号(逻辑1和逻辑0)，接收端装置搭备配备了专用应用程序的图像传感器来接收并辨识人眼无法识别的数字信号。然而，上述背光信号调变技术为高频运作，除了会提升背光模块的功耗并影响影像亮度外，在低亮度背光使用模式下可能无法再进行调变或造成显示器无法正确地显示预设的影像画面。The existing optical wireless communication system uses LED backlight signal modulation technology. The display at the sending end sends fast flashing digital signals (logic 1 and logic 0) by controlling the update frequency of the LED backlight module. The receiving end device is equipped with a dedicated application The image sensor of the program receives and recognizes digital signals that cannot be recognized by the human eye. However, the above-mentioned backlight signal modulation technology operates at high frequency. In addition to increasing the power consumption of the backlight module and affecting the brightness of the image, it may not be able to be modulated in low-brightness backlight usage mode or the display may not be able to correctly display the preset signal. video screen.

发明内容Contents of the invention

本发明提供一种具光学无线通信功能的显示装置，其包含一显示面板和一控制电路。该显示面板包含用来显示影像的一显示像素区域和用来发送光学信号的一红外光信号像素区域，其中该显示像素区域对一可见光波区的光穿透率大于对一红外光波区的光穿透率，而该红外光信号像素区域对该红外光波区的光穿透率大于对该可见光波区的光穿透率。该控制电路用来提供该显示面板在显示该影像和发送该光学信号时所需的控制信号。The invention provides a display device with optical wireless communication function, which includes a display panel and a control circuit. The display panel includes 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 to a visible light wave region is greater than that to an infrared light wave region Transmittance, and the light transmittance of the infrared light signal pixel area to the infrared light wave region is greater than the light transmittance to the visible light wave region. The control circuit is used for providing the control signal required by the display panel when displaying the image and sending the optical signal.

附图说明Description of drawings

图1为本发明实施例中一种具光学无线通信功能的显示装置的功能方块图。FIG. 1 is a functional block diagram of a display device with optical wireless communication function in an embodiment of the present invention.

图2为本发明实施例中显示装置的外观示意图。FIG. 2 is a schematic diagram of the appearance of a display device in an embodiment of the present invention.

图3为本发明实施例中显示装置驱动方式的时序图。FIG. 3 is a timing diagram of a driving method of a display device in an embodiment of the present invention.

图4为本发明实施例中显示装置的显示面板实作方式的示意图。FIG. 4 is a schematic diagram of an implementation of a display panel of a display device in an embodiment of the present invention.

图5为本发明另一实施例中显示装置的显示面板实作方式的示意图。FIG. 5 is a schematic diagram of an implementation of a display panel of a display device in another embodiment of the present invention.

图6为本发明另一实施例中显示装置的显示面板实作方式的示意图。FIG. 6 is a schematic diagram of an implementation of a display panel of a display device in another embodiment of the present invention.

图7为本发明另一实施例中显示装置的显示面板实作方式的示意图。FIG. 7 is a schematic diagram of an implementation of a display panel of a display device in another embodiment of the present invention.

图8为本发明另一实施例中显示装置的显示面板实作方式的示意图。FIG. 8 is a schematic diagram of an implementation of a display panel of a display device in another embodiment of the present invention.

附图标记说明：Explanation of reference signs:

10：显示面板；                      LR：红光；10: display panel; L R : red light;

12：显示像素区域；                  LG：绿光；12: display pixel area; L G : green light;

14：红外光信号像素区域；            LB：蓝光；14: Infrared light signal pixel area; L B : blue light;

20：控制电路；                      LIR：红外光；20: control circuit; L IR : infrared light;

100：显示装置；                     AR：红光自发光体；100: display device; A R : red self-illuminating body;

110：彩色滤光片基板；               AG：绿光自发光体；110: color filter substrate; A G : green self-illuminating body;

120：薄膜晶体管基板；               AB：蓝光自发光体；120: thin film transistor substrate; A B : blue light self-illuminating body;

130：液晶层；                       AW：白光自发光体；130: liquid crystal layer; A W : white light self-luminous body;

140：背光模块；                     AIR：红外光自发光体；140: backlight module; A IR : infrared self-luminous body;

150：红外光导光板；                 LEDW：白光发光二极管；150: infrared light guide plate; LED W : white light-emitting diode;

210：上基板；                       LEDIR：红外光发光二极管；210: upper substrate; LED IR : infrared light emitting diode;

220：下基板；                       FR、FG、FB：彩色滤光片；220: lower substrate; F R , F G , F B : color filters;

230：绝缘层；                       FIR：可见光滤光片；230: insulating layer; F IR : visible light filter;

R：红光像素；                       DIMAGE：影像数据；R: red light pixel; D IMAGE : image data;

G：绿光像素；                       DSIGNAL：光学信号；G: green pixel; D SIGNAL : optical signal;

B：蓝光像素；                       SW、SWR、SWG、SWB、SWIR：开关；B: Blu-ray pixel; SW, SW R , SW G , SW B , SW IR : switch;

IR：红外光像素；                    SR、SG、SB、SIR：控制信号。IR: infrared light pixel; S R , S G , S B , S IR : control signals.

L：光线；L: light;

具体实施方式Detailed ways

为使本发明的上述特征和优点能更明显易懂，下文特举实施例，并配合所附图作详细说明如下。In order to make the above-mentioned features and advantages of the present invention more comprehensible, the following specific embodiments are described in detail in conjunction with the accompanying drawings.

图1为本发明实施例中一种具光学无线通信功能的显示装置100的功能方块图。显示装置100包含一显示面板10和一控制电路20。显示面板10包含一显示像素区域12和一红外光信号像素区域14。显示像素区域12对可见光波区(例如：波长范围位于0.35～0.85um)的光穿透率大于对红外光波区(例如：波长范围位于0.75～1000um)的光穿透率，而红外光信号像素区域14对红外光波区的光穿透率大于对可见光波区的光穿透率。显示面板10可在显示像素区域12内以可见光来显示影像，并在红外光信号像素区域14内以红外光来传输光学信号(数字逻辑1和逻辑0)。控制电路20用来提供显示面板10在显示影像和发送光学信号时所需的控制信号，使得显示像素区域12内的信号更新频率相异于红外光信号像素区域14内的信号更新频率。FIG. 1 is a functional block diagram of a display device 100 with an optical wireless communication function in an embodiment of the present invention. The display device 100 includes a display panel 10 and a control circuit 20 . The display panel 10 includes a display pixel area 12 and an infrared light signal pixel area 14 . The light transmittance of the display pixel area 12 to the visible light wave region (for example: the wavelength range is 0.35-0.85um) is greater than the light transmittance to the infrared light wave region (for example: the wavelength range is 0.75-1000um), and the infrared light signal pixel The light transmittance of the region 14 to the infrared wave region is greater than the light transmittance to the visible light wave region. The display panel 10 can display images with visible light in the display pixel area 12 , and transmit optical signals (digital logic 1 and logic 0) with infrared light in the pixel area 14 of the infrared light signal. The control circuit 20 is used to provide control signals required by the display panel 10 when displaying images and sending 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 .

在本发明另一实施例中，显示像素区域12对红外光波区的光穿透率至少小于其入射光的50％原始能量衰减，而红外光信号像素区域14对可见光波区的光穿透率至少小于其入射光的50％原始能量衰减。In another embodiment of the present invention, the light transmittance of the display pixel area 12 to 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 area 14 to the visible light wave area Attenuation of at least less than 50% of the original energy of its incident light.

图2为本发明实施例中显示装置100的外观示意图。在此实施例中，显示像素区域12内设置多个红光像素R、绿光像素G和蓝光像素B，而红外光信号像素区域14内设置多个红外光像素IR。在本发明实施例中，显示像素区域12的总面积大于红外光信号像素区域14的总面积，但红光像素R、绿光像素G、蓝光像素和红外光像素IR的形状和布局方式并不限定本发明的范畴。FIG. 2 is a schematic diagram of the appearance of the display device 100 in the embodiment of the present invention. In this embodiment, a plurality of red light pixels R, green light pixels G and blue light pixels B are arranged in the display pixel area 12 , and a plurality of infrared light pixels IR are arranged in the infrared light signal pixel area 14 . In the embodiment of the present invention, the total area of the display pixel region 12 is greater than the total area of the infrared light signal pixel region 14, but the shape and layout of the red pixel R, the green pixel G, the blue pixel and the infrared pixel IR are different. define the scope of the invention.

图3为本发明实施例中显示装置100驱动方式的时序图。控制电路20可产生控制信号SR来驱动红光像素R、产生控制信号SG来驱动绿光像素G、产生控制信号SB来驱动蓝光像素B，以及产生控制信号SIR来驱动红外光像素IR。如图3所示，显示像素区域12所提供的显示影像数据DIMAGE的更新频率相异于红外光信号像素区域14所提供的光学信号数据DSIGNAL的更新频率。FIG. 3 is a timing diagram of a driving method of the display device 100 in an embodiment of the present invention. The control circuit 20 can generate a control signal S R to drive the red pixel R, a control signal S G to drive the green pixel G, a control signal S B to drive the blue pixel B, and a control signal S IR to drive the infrared pixel IR. As shown in FIG. 3 , the update frequency of the display image data D IMAGE provided by the display pixel area 12 is different from the update frequency of the optical signal data D SIGNAL provided by the infrared light signal pixel area 14 .

图4为本发明实施例中显示装置100的显示面板10实作方式的示意图。在此实施例中，显示面板10为一液晶模块(liquid crystal module，LCM)，其包含一彩色滤光片基板110、一薄膜晶体管(thin film transistor，TFT)基板120、一液晶层130，以及一背光模块140。液晶层130设置于彩色滤光片基板110和薄膜晶体管基板120之间。背光模块140设置于薄膜晶体管基板120的入光侧，其包含一白光发光二极管LEDW和一红外光发光二极管LEDIR以在出光侧提供光线L。薄膜晶体管基板120于入光侧接收光线L，且在出光侧上对应于显示像素区域12和红外光信号像素区域14中每一像素之处设置多个开关SW，其可控制光线L在相对应像素之处的穿透率。彩色滤光片基板110在入光侧上对应于显示像素区域12中每一像素之处设置多个彩色滤光片FR、FG和FB，并在入光侧上对应于红外光信号像素区域14中每一像素之处设置多个可见光滤光片FIR。为了简化说明，图4仅显示三个彩色滤光片FR、FG、FB和一可见光滤光片FIR。彩色滤光片FR、FG、FB和可见光滤光片FIR可允许光线L中特定波长范围的成分通过并滤除光线L中其它波长范围的成分，其中滤光片FR可让光线L中的红光LR通过(波长范围约为625nm～750nm)，滤光片FG可让光线L中的绿光LG通过(波长范围约为500nm～565nm)，滤光片FB可让光线L中的蓝光LB通过(波长范围约为440nm～485nm)，而可见光滤光片FIR可让光线L中的红外光LIR通过(波长大于850nm)。通过对彩色滤光片基板110和薄膜晶体管基板120通电可改变液晶层130中液晶分子的排列方式，进而调整光线L的偏极性，搭配开关SW的开启或关闭可调整红光LR、绿光LG、蓝光LB的比例以显示不同光强度与色彩的画面，且调整红外光LIR的强度以发送亮(逻辑1)暗(逻辑0)的光学信号。FIG. 4 is a schematic diagram of an implementation of the display panel 10 of the display device 100 in an embodiment of the present invention. In this embodiment, the display panel 10 is a liquid crystal module (liquid crystal module, LCM), which includes 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 TFT substrate 120 . The backlight module 140 is disposed on the light incident side of the thin film transistor substrate 120 , and includes a white light emitting diode LED W and an infrared light emitting diode LED IR to provide light L on the light emitting side. The thin film transistor substrate 120 receives the light L at the light incident side, and a plurality of switches SW are arranged on the light exit side corresponding to each pixel in the display pixel area 12 and the infrared light signal pixel area 14, which can control the light L at the corresponding Penetration at the pixel. The color filter substrate 110 is provided with a plurality of color filters F R , F G and F B corresponding to each pixel in the display pixel area 12 on the light incident side, and corresponding to the infrared light signal on the light incident side. A plurality of visible light filters F IR are disposed at each pixel in the pixel region 14 . For simplicity of illustration, Fig. 4 only shows three color filters F R , F G , F B and one visible light filter F IR . The color filters F R , F G , F B and the visible light filter F IR can allow components of a specific wavelength range in the light L to pass through and filter out components of other wavelength ranges in the light L, among which the filter F R can allow The red light L R in the light L passes through (the wavelength range is about 625nm~750nm), and the filter F G allows the green light L G in the light L to pass through (the wavelength range is about 500nm~565nm), and the filter F B It allows the blue light LB in the light L to pass through (the wavelength range is about 440nm~485nm), and the visible light filter F IR allows the infrared light L IR in the light L to pass through (the wavelength is greater than 850nm). By energizing the color filter substrate 110 and the thin film transistor substrate 120, the arrangement of the liquid crystal molecules in the liquid crystal layer 130 can be changed, thereby adjusting the polarity of the light L, and the red light LR and the green light can be adjusted by turning on or off the switch SW. The ratio of light L G and blue light LB is used to display images with different light intensities and colors, and the intensity of infrared light L IR is adjusted to send bright (logic 1) and dark (logic 0) optical signals.

在图4所示的实施例中，控制电路20(未显示于图4)可产生开启开关SW的控制信号SR、SG、SB、SIR以分别调整红光LR、绿光LG、蓝光LB和红外光LIR的信号频率，使得显示像素区域12内的信号更新频率相异于红外光信号像素区域14内的信号更新频率。或者，控制电路20(未显示于图4)另可产生分别驱动白光发光二极管LED和红外光发光二极管LEDIR的控制信号，通过对背光模块140进行光源调变来分别调整红光LR、绿光LG、蓝光LB和红外光LIR的信号频率，使得显示像素区域12内的信号更新频率相异于红外光信号像素区域14内的信号更新频率。In the embodiment shown in FIG. 4, the control circuit 20 (not shown in FIG. 4) can generate control signals S R , S G , S B , and S IR to turn on the switches SW to adjust the red light L R and the green light L respectively. G , the signal frequencies of the blue light L B and the infrared light L IR , make the signal update frequency in the display pixel area 12 different from the signal update frequency in the infrared light signal pixel area 14 . Alternatively, the control circuit 20 (not shown in FIG. 4 ) can generate control signals for separately driving the white light emitting diode LED and the infrared light emitting diode LED IR , and adjust the red light LR and the green light by modulating the light source of the backlight module 140 respectively. The signal frequencies of the light L G , the blue light LB and the infrared light L IR make the signal update frequency in the display pixel area 12 different from the signal update frequency in the infrared light signal pixel area 14 .

图5为本发明另一实施例中显示装置100的显示面板10实作方式的示意图。在此实施例中，显示面板10为一液晶模块，其包含一彩色滤光片基板110、一薄膜晶体管基板120、一液晶层130、一背光模块140，以及一红外光导光板150。液晶层130设置于彩色滤光片基板110和薄膜晶体管基板120之间。背光模块140设置于薄膜晶体管基板120的入光侧，其包含一白光发光二极管LEDW以提供光线L。薄膜晶体管基板120于入光侧接收光线L，且在出光侧上对应于显示像素区域12中每一像素之处设置多个开关SW，其可控制光线L在相对应像素之处的穿透率。彩色滤光片基板110在入光侧上对应于显示像素区域12的区域内设置多个彩色滤光片FR、FG和FB。为了简化说明，图5仅显示三个彩色滤光片FR、FG、FB。彩色滤光片FR、FG、FB可允许光线L中特定波长范围的成分通过并滤除光线L中其它波长范围的成分，其中滤光片FR可让光线L中的红光LR通过(波长范围约为625nm～750nm)，滤光片FG可让光线L中的绿光LG通过(波长范围约为500nm～565nm)，而滤光片FB可让光线L中的蓝光LB通过(波长范围约为440nm～485nm)。红外光导光板150设置于彩色滤光片基板110的出光侧，可将其侧边设置的红外光发光二极管LEDIR所发出红光LIR导向红外光导光板150的出光面。同时，红外光导光板150可采用对可见光具高穿透率的透明材质，因此不会影响红光LR、绿光LG和蓝光LB的出光过程。通过对彩色滤光片基板110和薄膜晶体管基板120通电可改变液晶层130中液晶分子的排列方式，进而调整光线L的偏极性，搭配开关SW的开启或关闭可调整红光LR、绿光LG、蓝光LB的比例以显示不同光强度与色彩的画面。另一方面，通过对红外光发光二极管LEDIR进行光源调变可调整红外光LIR的强度，进而发送出亮(逻辑1)暗(逻辑0)的光学信号。FIG. 5 is a schematic diagram of an implementation of the display panel 10 of the display device 100 in another embodiment of the present 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 TFT substrate 120 . The backlight module 140 is disposed on the light-incident side of the thin film transistor substrate 120 , and includes a white light emitting diode LED W for providing light L. As shown in FIG. The thin film transistor substrate 120 receives the light L on the light incident side, and a plurality of switches SW are arranged on the light exit side corresponding to each pixel in the display pixel area 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 R , F G and F B in a region corresponding to the display pixel region 12 on the light incident side. For simplicity of illustration, Fig. 5 only shows three color filters F R , F G , F B . The color filters F R , F G , and F B can allow the components of a specific wavelength range in the light L to pass through and filter out components in other wavelength ranges in the light L, and the filter F R can allow the red light L in the light L to pass through. R passes through (the wavelength range is about 625nm~750nm), the filter F G allows the green light L G in the light L to pass through (the wavelength range is about 500nm~565nm), and the filter F B allows the green light L G in the light L to pass through (the wavelength range is about 500nm~565nm). Blue light LB passes through (the wavelength range is about 440nm ~ 485nm). The infrared light guide plate 150 is disposed on the light emitting side of the color filter substrate 110 , and can guide the red light L IR emitted by the infrared light emitting diode LED IR disposed on the side to the light emitting surface of the infrared light guide plate 150 . At the same time, the infrared light guide plate 150 can be made of a transparent material with high transmittance to visible light, so it will not affect the light emitting process of the red light LR , green light LG and blue light LB . By energizing the color filter substrate 110 and the thin film transistor substrate 120, the arrangement of the liquid crystal molecules in the liquid crystal layer 130 can be changed, thereby adjusting the polarity of the light L, and the red light LR and the green light can be adjusted by turning on or off the switch SW. The ratio of light L G to blue light LB is used to display pictures with different light intensities and colors. On the other hand, by adjusting the light source of the infrared light emitting diode LED IR , the intensity of the infrared light L IR can be adjusted, and then a bright (logic 1) and dark (logic 0) optical signal can be sent.

在图5所示的实施例中，控制电路20(未显示于图5)可产生开启开关SW和红外光发光二极管LEDIR的控制信号SR、SG、SB、SIR以分别调整红光LR、绿光LG、蓝光LB和红外光LIR的信号频率，使得显示像素区域12内的信号更新频率相异于红外光信号像素区域14内的信号更新频率。In the embodiment shown in FIG. 5, the control circuit 20 (not shown in FIG. 5) can generate control signals S R , S G , S B , and S IR to turn on the switch SW and the infrared light emitting diode LED IR to adjust the red light emitting diode LED IR respectively. The signal frequencies of light LR , green light L G , blue light LB and infrared light L IR make the signal update frequency in the display pixel area 12 different from the signal update frequency in the infrared light signal pixel area 14 .

图6为本发明另一实施例中显示装置100的显示面板10实作方式的示意图。在此实施例中，显示面板10为一自发光面板，其包含一上基板210、一下基板220、一绝缘层230，多个红光自发光体AR、多个绿光自发光体AG、多个蓝光自发光体AB、多个红外光自发光体AIR，以及多个开关SWR、SWG、SWB和SWIR。为了简化说明，图6仅显示单一红光自发光体AR、单一绿光自发光体AG、单一蓝光自发光体AB、单一红外光自发光体AIR，以及4个开关SWR、SWG、SWB和SWIR。绝缘层230、每一自发光体和每一开关形成于上基板210和下基板220之间。开关SWR、SWG和SWB设置于下基板220上对应于显示像素区域12中每一像素之处，而开关SWIR设置于下基板220上对应于红外光信号像素区域14中每一像素之处。绝缘层230形成下基板220上以覆盖开关SWR、SWG、SWB和SWIR。红光自发光体AR、绿光自发光体AG和蓝光自发光体AB设置于绝缘层230上对应于显示像素区域12中每一像素之处，分别由开关SWR、SWG和SWB来控制其红光LR、绿光LG和蓝光LB的出光频率。红外光自发光体AIR设置于绝缘层230上对应于红外光信号像素区域14中每一像素之处，由开关SWIR来控制其红外光LIR的出光频率。控制电路20(未显示于图6)可产生开启开关SWR、SWG、SWB和SWIR的控制信号SR、SG、SB、SIR以改变红光自发光体AR、绿光自发光体AG、蓝光自发光体AB和红外光自发光体AIR的出光频率，进而调整红光LR、绿光LG、蓝光LB的比例以显示不同光强度与色彩的画面，且调整红外光LIR的强度以发送出亮(逻辑1)暗(逻辑0)的光学信号，并使得显示像素区域12内的信号更新频率相异于红外光信号像素区域14内的信号更新频率。FIG. 6 is a schematic diagram of an implementation of the display panel 10 of the display device 100 in another embodiment of the present 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, a plurality of red self-illuminators AR , a plurality of green self-illuminators AG , multiple blue light self-illuminators A B , multiple infrared light self-illuminators A IR , and multiple switches SW R , SW G , SW B and SW IR . To simplify the description, Fig. 6 only shows a single red self-illuminator AR , a single green self-illuminator A G , a single blue light self-illuminator A B , a single infrared self-illuminator A IR , and four switches SW R , SW G , SW B , and SW IR . The insulating layer 230 , each self-illuminator and each switch are formed between the upper substrate 210 and the lower substrate 220 . The switches SW R , SW G and SW B are disposed on the lower substrate 220 corresponding to each pixel in the display pixel area 12 , and the switches SW IR are disposed on the lower substrate 220 corresponding to each pixel in the infrared light signal pixel area 14 place. An insulating layer 230 is formed on the lower substrate 220 to cover the switches SW R , SW G , SW B and SW IR . The red self-illuminator A R , the green self-illuminator A G and the blue self-illuminator A B are arranged on the insulating layer 230 corresponding to each pixel in the display pixel area 12, respectively controlled by switches SW R , SW G and SW B is used to control the output frequencies of the red light LR , green light LG and blue light LB . The infrared self-illuminator A IR is disposed on the insulating layer 230 corresponding to each pixel in the infrared signal pixel area 14 , and the output frequency of the infrared light L IR is controlled by the switch SW IR . The control circuit 20 (not shown in FIG. 6 ) can generate control signals S R , S G , S B , S IR to turn on the switches SW R , SW G , SW B , and SW IR to change the red self-illuminator AR , green The output frequency of the light self-illuminator A G , the blue light self-illuminator A B and the infrared light self-illuminator A IR , and then adjust the ratio of red light LR , green light LG , and blue light LB to display different light intensities and colors screen, and adjust the intensity of the infrared light L IR to send out bright (logic 1) and dark (logic 0) optical signals, and make the signal update frequency in the display pixel area 12 different from the signal in the infrared light signal pixel area 14 update frequency.

图7为本发明另一实施例中显示装置100的显示面板10实作方式的示意图。显示装置100包含一上基板210、一下基板220、一绝缘层230，多个红光自发光体AR、多个绿光自发光体AG、多个蓝光自发光体AB、多个白光自发光体AW、一可见光滤光片FIR，以及多个开关SWR、SWG、SWB和SWIR。为了简化说明，图7仅显示单一红光自发光体AR、单一绿光自发光体AG、单一蓝光自发光体AB、单一白光自发光体AW，以及4个开关SWR、SWG、SWB和SWIR。开关SWR、SWG和SWB设置于下基板220上对应于显示像素区域12的区域内，而开关SWIR设置于下基板220上对应于红外光信号像素区域14的区域内。绝缘层230形成下基板220上以覆盖开关SWR、SWG、SWB和SWIR。红光自发光体AR、绿光自发光体AG和蓝光自发光体AB设置于绝缘层230上对应于显示像素区域12的区域内，分别由开关SWR、SWG和SWB来控制其红光LR、绿光LG和蓝光LB的出光频率。白光自发光体AW设置于绝缘层230上对应于红外光信号像素区域14的区域内，其发出的白光在通过可见光滤光片FIR后只有红外光LIR能通过(波长大于850nm)，由开关SWIR即可控制红外光LIR的出光频率。控制电路20(未显示于图7)可产生开启开关SWR、SWG、SWB和SWIR的控制信号SR、SG、SB、SIR以改变红光自发光体AR、绿光自发光体AG、蓝光自发光体AB和白光自发光体AW的出光频率，进而调整红光LR、绿光LG、蓝光LB的比例以显示不同光强度与色彩的画面，且调整红外光LIR的强度以发送出亮(逻辑1)暗(逻辑0)的光学信号，并使得显示像素区域12内的信号更新频率相异于红外光信号像素区域14内的信号更新频率。FIG. 7 is a schematic diagram of an implementation of the display panel 10 of the display device 100 in another embodiment of the present invention. The display device 100 includes an upper substrate 210, a lower substrate 220, an insulating layer 230, a plurality of red self-illuminators AR , a plurality of green self-illuminators AG , a plurality of blue self-illuminators AB , and a plurality of white light emitters. Self-illuminator A W , a visible light filter F IR , and a plurality of switches SW R , SW G , SW B and SW IR . To simplify the description, Fig. 7 only shows a single red self-illuminator AR , a single green self-illuminator A G , a single blue light self-illuminator A B , a single white light self-illuminator A W , and four switches SW R , SW G , SW B and SW IR . The switches SW R , SW G and SW B are disposed on the lower substrate 220 in a region corresponding to the display pixel region 12 , and the switch SW 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 switches SW R , SW G , SW B and SW IR . The red self-illuminator A R , the green self-illuminator A G and the blue self-illuminator A B are arranged on the insulating layer 230 in the area corresponding to the display pixel area 12, and are controlled by the switches SW R , SW G and SW B respectively. Control the light output frequency of its red light LR , green light LG and blue light LB . The white light self-illuminator A W is arranged on the insulating layer 230 in the area corresponding to the infrared light signal pixel area 14, and only the infrared light L IR (wavelength greater than 850nm) can pass through the white light emitted by it after passing through the visible light filter F IR . The output frequency of the infrared light L IR can be controlled by the switch SW IR . The control circuit 20 (not shown in FIG. 7 ) can generate control signals S R , S G , S B , S IR to turn on the switches SW R , SW G , SW B , and SW IR to change the red self-illuminator AR , green Adjust the ratio of red light LR , green light LG , and blue light LB to display pictures with different light intensities and colors , and adjust the intensity of the infrared light L IR to send a bright (logic 1) dark (logic 0) optical signal, and make the signal update frequency in the display pixel area 12 different from the signal update in the infrared light signal pixel area 14 frequency.

图8为本发明另一实施例中显示装置100的显示面板10实作方式的示意图。在此实施例中，显示面板10为一自发光面板，其包含一上基板210、一下基板220、一绝缘层230，多个红光自发光体AR、多个绿光自发光体AG、多个蓝光自发光体AB、多个红外光自发光体AIR，多个开关SWR、SWG、SWB，以及以及一红外光导光板150。为了简化说明，图8仅显示单一红光自发光体AR、单一绿光自发光体AG、单一蓝光自发光体AB、单一红外光自发光体AIR，以及3个开关SWR、SWG和SWB。开关SWR、SWG和SWB设置于下基板220上对应于显示像素区域12的区域内。绝缘层230形成下基板220上以覆盖开关SWR、SWG和SWB。红光自发光体AR、绿光自发光体AG和蓝光自发光体AB设置于绝缘层230上对应于显示像素区域12的区域内，分别由开关SWR、SWG和SWB来控制其红光LR、绿光LG和蓝光LB的出光频率。红外光导光板150设置于上基板210的出光面，可将其侧边设置的红外光自发光体AIR所发出红光LIR导向红外光导光板150的出光面。同时，红外光导光板150对可见光具高穿透率，因此不会影响红光LR、绿光LG和蓝光LB的出光过程。控制电路20(未显示于图8)可产生开启开关SWR、SWG和SWB的控制信号SR、SG和SB以改变红光自发光体AR、绿光自发光体AG和蓝光自发光体AB的出光频率，进而调整红光LR、绿光LG、蓝光LB的比例以显示不同光强度与色彩的画面，且产生对红外光自发光体AIR进行光源调变的控制信号SIR以发送发送出亮(逻辑1)暗(逻辑0)的光学信号，并使得显示像素区域12内的信号更新频率相异于红外光信号像素区域14内的信号更新频率。FIG. 8 is a schematic diagram of an implementation of the display panel 10 of the display device 100 in another embodiment of the present 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, a plurality of red self-illuminators AR , a plurality of green self-illuminators AG , a plurality of blue light self-illuminators A B , a plurality of infrared light self-illuminators A IR , a plurality of switches SW R , SW G , SW B , and an infrared light guide plate 150 . To simplify the description, Fig. 8 only shows a single red self-illuminator AR , a single green self-illuminator A G , a single blue light self-illuminator A B , a single infrared self-illuminator A IR , and three switches SW R , SW G and SW B . The switches SW R , SW G and SW B are 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 cover the switches SW R , SW G and SW B . The red self-illuminator A R , the green self-illuminator A G and the blue self-illuminator A B are arranged on the insulating layer 230 in the area corresponding to the display pixel area 12, and are controlled by the switches SW R , SW G and SW B respectively. Control the light output frequency of its red light LR , green light LG and blue light LB . The infrared light guide plate 150 is disposed on the light emitting surface of the upper substrate 210 , and can direct the infrared light disposed on its side from the illuminant A IR to emit red light L IR to the light emitting surface of the infrared light guide plate 150 . At the same time, the infrared light guide plate 150 has a high transmittance to visible light, so it will not affect the light emitting process of the red light LR , green light LG and blue light LB . The control circuit 20 (not shown in FIG. 8 ) can generate control signals S R , S G and S B to turn on the switches SW R , SW G and SW B to change the red self-illuminator AR and the green self-illuminator A G and the light output frequency of the blue light self-illuminator A B , and then adjust the ratio of red light LR , green light LG , and blue light LB to display pictures with different light intensities and colors, and generate a light source for the infrared light self-illuminator A IR The modulated control signal S IR is used to send out bright (logic 1) and dark (logic 0) optical signals, and make the signal update frequency in the display pixel area 12 different from the signal update frequency in the infrared light signal pixel area 14 .

在本发明实施例中，红光自发光体AR、绿光自发光体AG、蓝光自发光体AB、白光自发光体AW和红外光自发光体AIR可为有机发光二极管(organic light emitting diode，OLED)或微型化发光二极管(micro LED)。然而，自发光体的种类并不限定本发明的范畴。In the embodiment of the present invention, the red light self-illuminator AR , the green light self-illuminator AG , the blue light self-illuminator AB , the white light self-illuminator AW and the infrared light self-illuminator AIR can be organic light emitting diodes ( organic light emitting diode (OLED) or miniaturized light emitting diode (micro LED). However, the type of self-luminous body does not limit the scope of the present invention.

综上所述，本发明提供一种具光学无线通信功能的显示装置，其在显示面板的显示像素区域内以可见光来显示影像画面，并在显示面板的红外光信号像素区域内以红外光来传输光学信号。因此，本发明能增加光学通信的信息传输量，且不会影响影像画面的显示。In summary, the present invention provides a display device with an optical wireless communication function, which uses visible light to display images in the display pixel area of the display panel, and uses infrared light to display images in the infrared light signal pixel area of the display panel. transmit optical signals. Therefore, the present invention can increase the information transmission amount of optical communication without affecting the display of image frames.

以上所述仅为本发明的较佳实施例，凡依本发明权利要求所做的均等变化与修饰，皆应属本发明的涵盖范围。The above descriptions are only preferred embodiments of the present invention, and all equivalent changes and modifications made according to the claims of the present invention shall fall within the scope of the present invention.

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.
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