CN114675448A - Display device for receiving and processing optical signals and interactive display system - Google Patents

Display device for receiving and processing optical signals and interactive display system Download PDF

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Publication number
CN114675448A
CN114675448A CN202210304720.1A CN202210304720A CN114675448A CN 114675448 A CN114675448 A CN 114675448A CN 202210304720 A CN202210304720 A CN 202210304720A CN 114675448 A CN114675448 A CN 114675448A
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optical signal
signal receiving
unit
display device
optical
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CN202210304720.1A
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杨如祥
赵飞
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Individual
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    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/13338—Input devices, e.g. touch panels
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/042—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Optics & Photonics (AREA)
  • Position Input By Displaying (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

The invention discloses a display device for receiving and processing optical signals and an interactive display system, wherein the display device for receiving and processing the optical signals comprises a substrate and an optical signal control and conversion layer supported on the substrate, and is characterized in that: the optical signal control and conversion layer comprises a plurality of optical signal output units, the optical signal output units realize the control of the on-off of an optical output channel and the conversion of an electric signal into an optical signal, each optical signal output unit forms a display pixel unit, and each optical signal output unit comprises a plurality of light-emitting units emitting light with different colors; the optical signal control and conversion layer further comprises a plurality of optical signal receiving units for receiving external infrared optical signals and converting the external infrared optical signals into electric signals, and one or more optical signal receiving units are integrated in each pixel unit or one optical signal receiving unit is integrated in a plurality of pixel units.

Description

Display device for receiving and processing optical signals and interactive display system
Technical Field
The invention relates to the technical field of display, in particular to a display device and an interactive display system using the same.
Background
With the continuous development of electronic technology and information technology, more and more electronic devices enter the daily work and life of people, the degree of informatization of the society is higher and higher, and electronic devices supporting a display function become an indispensable part of the daily work and life of people.
At present, the display screen is mainly used as an information output port device to provide information output support. With the development of informatization, people have higher and higher interaction requirements, and the development of touch technologies, such as On-cell touch and In-cell touch technologies, and touch technologies supporting Out-cells, such as infrared touch, capacitive (nano silver, Mate mask, ITO, and the like) touch, resistive touch, inductive touch technologies, basically meets the requirements of daily contact interaction, but the existing technologies cannot meet the requirements of non-contact application scenarios, such as laser pens, air-isolation gestures, remote infrared control, and the like. A certain kind of scenes can be realized by means of a camera or other sensing modules, but ultra-thin and ultra-narrow frame (even frameless) applications cannot be met. The scheme of the camera or the sensor under the screen can only realize the remote interaction of a certain local area of the screen, and can not realize the full-screen interaction.
Disclosure of Invention
The first technical problem to be solved by the present invention is to provide a display device for receiving and processing optical signals, which can support full-screen optical signal receiving and processing, in view of the above-mentioned deficiencies of the prior art.
A second technical problem to be solved by the present invention is to provide an interactive display system using the display device.
The technical scheme adopted by the invention for solving the first technical problem is as follows: a display device for receiving and processing optical signals, comprising a substrate and an optical signal control and conversion layer supported on the substrate, characterized in that:
the optical signal control and conversion layer comprises a plurality of optical signal output units, the optical signal output units realize the control of the on-off of an optical output channel and the conversion of an electric signal into an optical signal, each optical signal output unit forms a display pixel unit, and each optical signal output unit comprises a plurality of light-emitting units emitting light with different colors;
the optical signal control and conversion layer further comprises a plurality of optical signal receiving units for receiving external infrared optical signals and converting the external infrared optical signals into electric signals, and one or more optical signal receiving units are integrated in each pixel unit or one optical signal receiving unit is integrated in a plurality of pixel units.
Preferably, the optical signal receiving unit includes a photosensor.
For the convenience of application to LCD display screens, the optical signal output unit and the optical signal receiving unit are arranged in layers, and the optical signal receiving unit further comprises a transparent gasket arranged at a position outside the photosensitive element.
Preferably, in order to facilitate driving of the optical signal output unit and amplification and conversion of signals of the optical signal receiving unit, a TFT layer is disposed on the substrate, and the TFT layer is used for providing driving for the optical signal output unit and providing amplification and conversion of signals for the optical signal receiving unit.
In order to facilitate the isolation control among the pixel units of the optical signal control and conversion layer and realize the optical signal output and input bandwidth control, a light filtering isolation layer is further arranged on one side, away from the substrate, of the optical signal control and conversion layer.
In order to realize contact interaction, a touch sensing layer is arranged on one side, away from the substrate, of the optical signal control and conversion layer.
The technical scheme adopted by the invention for solving the second technical problem is as follows: an interactive display system, characterized by: a display device to which the optical signal reception and processing as described above is applied.
In order to facilitate control of light output and receiving and processing of light signals, the interactive display system further comprises a signal receiving processing module and a source driving module, wherein the source driving module comprises a driving unit for controlling the light signal output unit and a sampling unit for receiving signals of the light signal receiving unit, and the signal receiving processing module receives and processes the light signals sampled by the source driving module.
Compared with the prior art, the invention has the advantages that: the optical signal receiving unit is used as a sub-pixel unit and integrated in the pixel unit or among the pixel units, so that the pixel level received signal resolution is supported, and full-screen optical signal receiving and processing of the display device can be realized; the remote non-contact interaction can be realized, and the contact interaction can also be realized by arranging a touch sensing layer.
Drawings
Fig. 1 is a sectional view of a display device according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view of a display device according to an alternative embodiment of the present invention;
FIG. 3 is a schematic diagram of a pixel unit structure of an optical signal control and conversion layer according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of an alternative arrangement of optical signal control and conversion layers according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of an alternative arrangement of optical signal control and conversion layers according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of an alternative arrangement of optical signal control and conversion layers according to an embodiment of the present invention;
FIG. 7 is a schematic diagram of an alternative arrangement of optical signal control and conversion layers according to an embodiment of the present invention;
fig. 8 is an example of an optical signal conversion processing circuit diagram of an optical signal receiving unit of a display device according to an embodiment of the present invention;
FIG. 9 is a circuit diagram of an example of an optical signal conversion processing circuit of an optical signal receiving unit of a display device according to an embodiment of the present invention
Fig. 10 is an example of an optical signal conversion processing circuit diagram of an optical signal receiving unit of a display device according to an embodiment of the present invention;
FIG. 11 is a diagram illustrating a filter isolation layer of a display device according to an embodiment of the present invention;
FIG. 12 is a partial cross-sectional view of a display device according to an embodiment of the present invention applied to an LCD panel;
FIG. 13 is a schematic diagram of an optical signal control and conversion layer of an LCD panel of a display device according to an embodiment of the present invention;
fig. 14 is a schematic block diagram of a display device according to an embodiment of the present invention applied to a display system;
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
Referring to fig. 1, a display device for receiving and processing an optical signal, which implements an infrared light signal receiving function for a current mainstream display screen, where the mainstream display screen includes an LCD, an OLED (including WOLED, AMOLED, and PMOLED), and an LED (including miniLED and micro LED). The display device of the invention can support full screen optical signal receiving and processing, and can also realize contact and non-contact interaction functions.
The display device comprises a substrate 1, an optical signal control and conversion layer 2 and a filtering isolation layer 3 which are arranged in sequence. The substrate 1 is preferably a glass substrate, enabling the support and carrying of the optical signal control and conversion layer 2.
Referring to fig. 2, in order to implement contact interaction, a touch sensing layer 4 may be further disposed between the optical signal control and conversion layer 2 and the filtering isolation layer 3. The touch sensing layer 4 may be formed by a conventional method, and its wiring is disposed on two sides of the substrate 1.
Referring to fig. 3, the optical signal control and conversion layer 2 includes a plurality of optical signal output units 21, each of the optical signal output units 21 constituting a pixel unit, a plurality of light emitting units 211 capable of controlling the opening and closing of an optical output path and converting an electrical signal into an optical signal. The light-emitting units 211 can be three light-emitting units 211 as described in this embodiment, and serve as R, G, B display sub-pixels to emit three colors of red, green and blue, respectively. Alternatively, there may be four light emitting cells 211, each displaying R, G, B, W subpixels.
The optical signal control and conversion layer 2 further includes a plurality of optical signal receiving units 22, and each optical signal receiving unit 22 is capable of receiving an optical signal and converting the optical signal into an electrical signal. The optical signal receiving unit 22 includes a photosensitive element 221, and the photosensitive element 221 may be a photodiode, a phototransistor, a photosensitive MOS transistor, a photo-voltage capacitor, or a photoresistor, and the like, and receives and converts an optical signal into an electrical signal such as a switching signal, a current signal, a voltage signal, a capacitance signal, or a resistance signal. The light signal receiving units 22 are sub-pixel sized and may be integrated with R, G, B (or R, G, B, W) display sub-pixels in a pixel unit, as shown in fig. 3, 4 and 7, or may be distributed without the arrangement of pixel units (one light signal receiving unit 22 is distributed among several pixel units), as shown in fig. 5 and 6. The optical signal receiving unit 22 is designed according to the pixel arrangement structure of the display device, and a novel pixel arrangement structure may be adopted according to actual conditions. The light signal receiving units 22 are uniformly distributed, and the number thereof may be equal to, greater than, or less than the number of pixel units.
The optical signal receiving unit 22 receives an external infrared optical signal such as a laser pen, a human thermal infrared, an infrared marker, etc. in real time. The optical signal conversion processing circuit of the optical signal receiving unit 22 can be seen from fig. 8 to fig. 10, which are a circuit with a hysteresis comparator, a switch-type circuit and a circuit supporting gray scale, respectively.
A TFT (thin film transistor) layer 11 is designed on the substrate 1, and a unit for signal amplification and conversion is designed for the photosensitive element of each optical signal receiving unit 22 in addition to a driving unit for implementing the on/off control of the optical output path or the electrical signal to the optical signal output unit 21. The TFT layer 11 may be formed by sputtering a gate material film on a borosilicate glass substrate by an a-Si TFT manufacturing process, and forming a gate wiring pattern after exposure through a mask, development, and dry etching.
The filter isolation layer 3 is used for realizing the optical signal control and isolation control among the pixel units of the conversion layer 2, and realizing the optical signal output and input bandwidth control. The light filtering isolation layer 3 is made of black shading materials and transparent light filtering materials, the black shading materials are designed according to the opening shape of the pixel units of the light signal control and conversion layer 2 and are arranged around each sub-pixel unit, and light isolation among different pixel units is achieved. The transparent filter material forms a window band-pass filter of each pixel unit, and a black shading isolation unit is obtained by manufacturing a BM (black matrix) on the transparent filter material by adopting a light resistance process or other (dyeing, ink-jet, printing and the like) processes, so that the passing of R, G, B (or R, G, B, W) spectrums and light receiving unit spectrums is realized. In this embodiment, the spectrum of the optical signal receiving unit 22 is an infrared spectrum, the central wavelength of the filter of the optical signal receiving unit 22 may be 850nm, 980nm, 1060nm, 1310nm, etc., and the half-wave width is 10nm to 20 nm.
Referring to fig. 11, the filter isolation layer 3 includes a red filter 31, a blue filter 32, a green filter 33, and an infrared filter 34, the four filters are arranged in an array and are staggered with each other, the positions of the filters respectively correspond to the corresponding light emitting unit 211 and the corresponding photosensitive element 221 (i.e., correspond to the sub-pixel unit), and the periphery of each filter (the periphery of the sub-pixel unit) constitutes a light shielding isolation region 35. The red filter 31 corresponds to the light emitting unit 211 emitting red light, the blue filter 32 corresponds to the light emitting unit 211 emitting blue light, the green filter 33 corresponds to the light emitting unit 211 emitting filtered light, and the infrared filter 34 corresponds to the photosensitive element 221.
When applied to different display screens, the optical signal output unit 21 and the optical signal receiving unit 22 may be disposed on the same level in the OLED and LED display screens. The implementation of optical signal reception on LCD is relatively complicated, because LCD's particularity, the liquid crystal itself does not emit light, it needs a light source, the output control of optical signal is implemented by controlling the on-off of the light source, instead of signal conversion implemented by the light emitting units such as OLED and LED, the optical signal receiving unit 22 also implements optical signal conversion, therefore it cannot be designed on a layer. Referring to fig. 12 and 13, the optical signal output unit 21 and the optical signal receiving unit 22 are designed on two layers, the arrangement of the optical signal receiving unit 22 is considered in the design of the optical signal control and conversion layer 2, the liquid crystal layer 25 at this position does not need to realize control, a transparent pad 222 is required to be arranged on the optical signal receiving unit 22 at a position other than the photosensitive element 221 in order to realize the input of optical signals, and an isolation layer is arranged between the transparent pads 222 corresponding to each sub-pixel in order to prevent crosstalk between sub-pixels (CF-like design).
The display device for receiving, converting, outputting and displaying the optical signal is the prior art and therefore will not be described in detail herein. As an essential structure, it includes, in addition to the TFT layer 11 as described above, electrode layers providing signal connections for the optical signal output 21 and the optical signal receiving unit 22, two electrode layers are provided for the OLED and the LCD, the first electrode 23 and the second electrode 24, respectively, and only one electrode layer needs to be provided for the LED. In addition, the OLED display panel further comprises a cover plate or a polaroid 12 which is arranged on one side of the filtering isolation layer 3, far away from the signal control and conversion 2, the OLED display panel only needs to be provided with an upper polaroid, the LED display panel does not need to be provided with the polaroid, only a glass cover plate or a film needs to be arranged, and the LCD display panel also needs to be provided with a lower polaroid at the bottom of the substrate 1 besides the upper polaroid.
Therefore, the display device can realize optical signal display output, and can also receive and process the input optical signal to realize non-contact interaction or communication.
Referring to fig. 14, the interactive display system applied to the display device of the present invention further includes a signal receiving and processing module 5, a source driving module 6, a timing control module (TCON)7, a power supply module 8, an interface module 9, and a storage module 10. The specific structure of each module can be the same as that of the existing display screen system. The signal receiving and processing module 5 receives and processes the electrical signals output by the optical signal receiving units 22, and when the touch sensing layer 4 is included, the signal receiving and processing module 5 further adds a touch scanning driving unit to process the touch signals output by the touch sensing layer 4. The source driving module 6 includes two parts, one part is used for realizing a scanning driving unit for controlling the display output (the optical signal output unit 21), and the other part is used for realizing a scanning sampling unit for receiving signals (the optical signal receiving unit 22). The source driving module 6 scans, refreshes and outputs the unit and scans, samples and receives the unit in real time, realize the real-time output and receiving process of the optical signal.
The time sequence control module 7 is used for realizing a time sequence control module for displaying time sequence control; the power supply module 8 supplies power to the whole system; the interface module 9 can be a V-by-One, a USB, a power supply, etc., to realize external communication, and the storage module 10 realizes information storage, for example, an EEPROM can be used.

Claims (8)

1. A display device for optical signal reception and processing, comprising a substrate (1) and an optical signal control and conversion layer (2) supported on the substrate (1), characterized in that:
the optical signal control and conversion layer (2) comprises a plurality of optical signal output units (21), the optical signal output units (21) realize the control of the opening and the closing of an optical output channel and the conversion of an electric signal into an optical signal, each optical signal output unit (21) forms a pixel unit for display, and each optical signal output unit (21) comprises a plurality of light-emitting units (211) emitting light with different colors;
the optical signal control and conversion layer (2) further comprises a plurality of optical signal receiving units (22) which receive external infrared optical signals and convert the external infrared optical signals into electric signals, one or more optical signal receiving units (22) are integrated into each pixel unit, or one optical signal receiving unit (22) is integrated into a plurality of pixel units.
2. The optical signal receiving and processing display device of claim 1, wherein: the optical signal receiving unit (22) includes a photosensor (221).
3. The optical signal receiving and processing display device of claim 2, wherein: the optical signal output unit (21) and the optical signal receiving unit (22) are arranged in a layered mode, and the optical signal receiving unit (22) further comprises a transparent gasket (222) arranged at a position outside the photosensitive element (221).
4. The optical signal receiving and processing display device of claim 1, wherein: the substrate (1) is provided with a TFT layer (11), and the TFT layer (11) is used for providing drive for an optical signal output unit (21) and providing amplification and conversion of signals for an optical signal receiving unit (22).
5. The optical signal receiving and processing display device of claim 1, wherein: and a light filtering isolation layer (3) is further arranged on one side, far away from the substrate (1), of the optical signal control and conversion layer (2).
6. The optical signal receiving and processing display device of claim 1, wherein: and a touch sensing layer (4) is arranged on one side, far away from the substrate (1), of the optical signal control and conversion layer (2).
7. An interactive display system, characterized by: a display device to which the optical signal reception and processing as claimed in any one of claims 1 to 6 is applied.
8. The interactive display system of claim 7, wherein: the interactive display system further comprises a signal receiving processing module (5) and a source driving module (6), wherein the source driving module (6) comprises a driving unit for controlling the light signal output unit (21) and a sampling unit for receiving the light signal of the light signal receiving unit (22), and the signal receiving processing module (5) receives and processes the light signal sampled by the source driving module (6).
CN202210304720.1A 2022-03-22 2022-03-22 Display device for receiving and processing optical signals and interactive display system Pending CN114675448A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210304720.1A CN114675448A (en) 2022-03-22 2022-03-22 Display device for receiving and processing optical signals and interactive display system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210304720.1A CN114675448A (en) 2022-03-22 2022-03-22 Display device for receiving and processing optical signals and interactive display system

Publications (1)

Publication Number Publication Date
CN114675448A true CN114675448A (en) 2022-06-28

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