CN109656420B - Color film substrate, display device and control device thereof - Google Patents
Color film substrate, display device and control device thereof Download PDFInfo
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- CN109656420B CN109656420B CN201910144299.0A CN201910144299A CN109656420B CN 109656420 B CN109656420 B CN 109656420B CN 201910144299 A CN201910144299 A CN 201910144299A CN 109656420 B CN109656420 B CN 109656420B
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- 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
- G06F3/0412—Digitisers structurally integrated in a display
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- 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
- G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
- G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
- G06F3/03545—Pens or stylus
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- 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
- G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
- G06F3/038—Control and interface arrangements therefor, e.g. drivers or device-embedded control circuitry
- G06F3/0386—Control and interface arrangements therefor, e.g. drivers or device-embedded control circuitry for light pen
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- 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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Abstract
The disclosure provides a color film substrate, a display device and a control device thereof, and relates to the field of display. This various membrane base plate includes: a substrate; a plurality of color-blocking blocks on the substrate; and a photonic crystal layer on the substrate and between adjacent color-resist blocks. The photonic crystal layer is configured to block visible light while allowing light of a range of wavelengths to pass through. The photonic crystal layer on the substrate between adjacent color-resist blocks allows only light of a specific wavelength range to pass through but not visible light, and thus it can function as both a black matrix and control light of the display device, thereby achieving the function of controlling the display device using light. In addition, since a separate opening through which light for controlling the display device passes is not required, it is advantageous to improve the pixel aperture ratio of the display device.
Description
Technical Field
The disclosure relates to the field of display technologies, and in particular, to a color film substrate, a display device including the color film substrate, and a control device for controlling the display device.
Background
Touch display technology has been widely used. However, in some special environments, such as chemical plants, which are harmful to human body, it is desirable to operate the display device remotely by, for example, a laser control pen, so as to prevent such harmful environment from damaging human body.
It is to be noted that the information disclosed in the above background section is only for enhancement of understanding of the background of the present disclosure, and thus may include information that does not constitute prior art known to those of ordinary skill in the art.
Disclosure of Invention
Embodiments of the present disclosure provide a color filter substrate, a display device including the color filter substrate, and a light control device for controlling the display device, which are beneficial to improving a pixel aperture ratio of the display device.
According to a first aspect of the present disclosure, a color filter substrate is provided, including: a substrate; a plurality of color resist blocks on the substrate; and a photonic crystal layer on the substrate and between adjacent color-resist blocks, wherein the photonic crystal layer is configured to block visible light while allowing light of a wavelength range to pass through.
According to some embodiments of the disclosure, the light of the wavelength range includes ultraviolet light and infrared light.
According to some embodiments of the present disclosure, the color filter substrate further includes: and a plurality of light sensing units located on a side of the photonic crystal layer away from the substrate and configured to sense the light of the wavelength range incident through the photonic crystal layer.
According to some embodiments of the present disclosure, a photosensitive unit includes a photosensitive material layer electrically connected to a driving wiring, a first sensing wiring extending in a first direction, and a second sensing wiring extending in a second direction, wherein the first direction is perpendicular to the second direction.
According to some embodiments of the present disclosure, the driving wiring, the first sensing wiring, and the second sensing wiring are disposed on a side of the photosensitive material layer away from the substrate.
According to a second aspect of the present disclosure, there is provided a display device, including an array substrate and a color filter substrate, where the color filter substrate includes: a substrate; a plurality of color resist blocks on the substrate; and a photonic crystal layer on the substrate and between adjacent color-resist blocks, wherein the photonic crystal layer is configured to block visible light while allowing light of a wavelength range to pass through.
According to some embodiments of the disclosure, the light of the wavelength range includes ultraviolet light and infrared light.
According to some embodiments of the present disclosure, the display device further comprises a plurality of light sensing units configured to sense the wavelength range of light incident through the photonic crystal layer.
According to some embodiments of the present disclosure, the plurality of photosensitive cells are integrated on a side surface of the photonic crystal layer away from the substrate.
According to some embodiments of the present disclosure, the photosensitive unit includes a photosensitive material layer electrically connected to a driving wiring, a first sensing wiring extending in a first direction, and a second sensing wiring extending in a second direction, wherein the first direction is perpendicular to the second direction.
According to some embodiments of the present disclosure, the plurality of photosensitive units are integrated on a surface of the array substrate facing the color filter substrate.
According to some embodiments of the present disclosure, a photosensitive unit includes a photosensitive material layer electrically connected to a driving wiring, a first sensing wiring extending in a first direction, and a second sensing wiring extending in a second direction, wherein the first direction is perpendicular to the second direction.
According to some embodiments of the present disclosure, the driving wiring is disposed at a side of the photosensitive material layer away from the substrate and is further electrically connected to the plurality of pixel units of the array substrate to drive the plurality of pixel units.
According to a third aspect of the present disclosure, there is provided a control apparatus for a display apparatus according to any of the above embodiments, comprising a light source configured to emit a light beam of visible light and a light beam of light of the wavelength range.
According to some embodiments of the present disclosure, a light source includes: a first sub-light source configured to emit a beam of visible light; a second sub-light source configured to emit a beam of light of the wavelength range.
In the color filter substrate and the display device according to the embodiment of the disclosure, the photonic crystal layer located on the substrate and between the adjacent color resist blocks allows only light of a specific wavelength range to pass through but not visible light, so that the photonic crystal layer can play a role of a black matrix and also allows light (for example, ultraviolet light or infrared light) for controlling the display device to pass through, thereby realizing a role of controlling the display device by using the light. In addition, since a separate opening through which light for controlling the display device passes is not required, it is advantageous to improve the pixel aperture ratio of the display device.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this application, illustrate embodiments of the disclosure and together with the description serve to explain the principles of the disclosure. In the drawings:
fig. 1 is a schematic diagram illustrating a color filter substrate according to an exemplary embodiment of the present disclosure;
fig. 2 is a view illustrating an arrangement of a color resist block, a light sensing unit, a sensing wiring, and a driving wiring according to an exemplary embodiment of the present disclosure;
fig. 3 is a schematic cross-sectional view of a color filter substrate according to an embodiment of the present disclosure, taken along line I-I' in fig. 2;
FIG. 4 is a schematic cross-sectional view of a display device according to an embodiment of the present disclosure taken along line I-I' in FIG. 2;
fig. 5 is a schematic view illustrating a display device according to another exemplary embodiment of the present disclosure;
fig. 6 is a schematic diagram illustrating a control device according to an exemplary embodiment of the present disclosure.
Detailed Description
Exemplary embodiments of the present disclosure will now be described more fully with reference to the accompanying drawings. Embodiments may, however, be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the disclosure to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
The terms "first" and "second" used in the embodiments of the present disclosure are used for convenience of description and are not intended to be construed in a quantitative sense.
Under some special environments such as chemical plants, which are harmful to human bodies, a light-controlled display device can be installed, so that the light-controlled display device can be remotely controlled by control light such as laser, and the human bodies are prevented from being damaged due to the special environments. Such remote control of the light-controlled display device is achieved by controlling the light to irradiate the photosensitive material.
The photosensitive material may be disposed inside the display device, for example, between the array substrate and the color filter substrate. However, in such a design, a separate opening that allows control light to pass through needs to be provided on the color filter substrate, which causes a pixel aperture ratio of the display device to decrease.
In addition, the photosensitive material may be disposed outside the display device, for example, on a side of the color filter substrate away from the array substrate. However, such a design is complex and not easy to implement.
Exemplary embodiments of the present disclosure provide a color film substrate that may implement optical control of a display device and is advantageous for improving a pixel aperture ratio of the display device.
Specifically, a photonic crystal layer that blocks visible light and allows light of a specific wavelength range to pass is disposed between color resist blocks of the color filter substrate, so that the photonic crystal layer can function as a black matrix (to prevent light emitted from the array substrate from passing) and also allows light for controlling the display device to pass. Since a separate opening through which light controlling the display device passes is not required, it is advantageous to improve the pixel aperture ratio of the display device.
The color filter substrate will be described in detail below with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a schematic diagram illustrating a color filter substrate according to an exemplary embodiment of the present disclosure. As shown in fig. 1, the color filter substrate 001 includes: a substrate 100; a plurality of color resist blocks 110 disposed on the substrate 100; and a photonic crystal layer 120 disposed on the substrate 100 and between adjacent color-resist blocks 110, wherein the photonic crystal layer 120 is configured to block visible light and allow light of a wavelength range to pass therethrough.
Since the photonic crystal layer 120 disposed between the color resist blocks 110 of the color filter substrate 001 allows only light of a specific wavelength range to pass therethrough while blocking visible light, it can function as a black matrix (e.g., prevent visible light emitted from the array substrate from passing between the color resist blocks) and also allow light controlling the display device to pass therethrough. In this case, a separate opening through which light for controlling the display device passes is not required, and thus it is advantageous to improve the pixel aperture ratio of the light control display device.
The substrate 100 may be a transparent insulating substrate, for example, it may be a glass substrate. The plurality of color blocks 110 may be red color blocks, green color blocks, blue color blocks.
The photonic crystal layer 120 is formed of a photonic crystal. Photonic crystals are materials formed by periodic arrangement of media of different refractive indices. The photonic crystal has a wavelength selection function, and can selectively allow light in a certain wavelength band to pass through and prevent light in other wavelength bands from passing through. The photonic crystal layer 120 according to an embodiment of the present disclosure is formed of a photonic crystal that allows control light, such as ultraviolet light or infrared light, to pass therethrough and blocks visible light from passing therethrough, so that the photonic crystal layer 120 may function as a black matrix that blocks visible light and may allow control light, such as ultraviolet light or infrared light, to pass therethrough.
Here, in order to prevent visible light from passing between the color resist blocks 110, the photonic crystal layer 120 may be integrally formed between a plurality of color resist blocks 110 spaced apart from each other.
The exemplary embodiment of the present disclosure also provides a color film substrate. Compared with the color film substrate shown in fig. 1, the color film substrate further includes a plurality of light sensing units for sensing control light. The plurality of photosensitive cells are disposed on a side of the photonic crystal layer away from the substrate, and thus can sense light of a specific wavelength range incident through the photonic crystal layer, i.e., control light such as ultraviolet light or infrared light.
The color filter substrate will be described in detail with reference to fig. 2 and 3.
Fig. 2 is a view showing an arrangement of a color resist block, a photosensitive cell, an induction wiring, and a driving wiring according to an exemplary embodiment of the present disclosure, and fig. 3 is a schematic cross-sectional view of a color filter substrate according to an embodiment of the present disclosure taken along line I-I' in fig. 2.
As shown in fig. 2 and 3, the color filter substrate 002 includes: a substrate 200; a plurality of color resist blocks 210 disposed on the substrate 200; a photonic crystal layer 220 disposed on the substrate 200 and between adjacent color-resist blocks 210, wherein the photonic crystal layer 220 is configured to block visible light while allowing light of a wavelength range to pass therethrough; a plurality of photo-sensing units located at a side of the photonic crystal layer 220 away from the substrate 200 and configured to sense the wavelength range of light incident through the photonic crystal layer 220.
Since the photonic crystal layer 220 disposed between the color resist blocks 210 of the color filter substrate 002 only allows light in a specific wavelength range to pass through and blocks visible light, it can function as a black matrix, for example, visible light emitted from the array substrate is prevented from passing through between the color resist blocks 210, and control light can reach the photosensitive units through the photonic crystal layer 220, so that the positions of the control light can be identified by the photosensitive units. In addition, a separate opening through which light for controlling the display device passes is not required, and thus it is advantageous to improve the pixel aperture ratio of the light control display device.
Here, in order to prevent visible light from passing between the color resist blocks 210, the photonic crystal layer 220 may be integrally formed between a plurality of color block blocks 210 spaced apart from each other. And unlike the photonic crystal layer 220, a plurality of photosensitive cells (e.g., shown by a box made up of a dotted line and a solid line in fig. 2) are disposed spaced apart from each other to identify the position where the control light is irradiated.
The substrate 200 may be a transparent insulating substrate, for example, it may be a glass substrate. The plurality of color blocks 210 may be red color blocks, green color blocks, blue color blocks.
The photonic crystal layer 220 is formed of a photonic crystal. As described above, a photonic crystal is a material formed by periodically arranging media having different refractive indices. The photonic crystal has a wavelength selection function, and can selectively allow light in a certain wavelength band to pass through and prevent light in other wavelength bands from passing through. The photonic crystal layer 220 according to an embodiment of the present disclosure is formed of a photonic crystal that allows ultraviolet light or infrared light to pass therethrough and blocks visible light from passing therethrough, so that the photonic crystal layer 220 may function as a black matrix that blocks visible light and may allow control light such as ultraviolet light or infrared light to pass therethrough.
The plurality of photosensitive units are spaced apart from each other and may include a photosensitive material layer 230. The photosensitive material layer 230 is coupled, i.e., electrically connected, to a driving wire 231, a first sensing wire 232 extending in a first direction X, and a second sensing wire 233 extending in a second direction Y, wherein the first direction X may be perpendicular to the second direction Y. The resistance of the photosensitive material layer 230 rapidly decreases under the irradiation of light of a specific wavelength, and thus the first and second sensing wirings 232 and 233 are electrically connected to the driving wiring 231 via the photosensitive material layer 230, so that an electrical signal applied via the driving wiring 231 is transmitted to the first and second sensing wirings 232 and 233, and thus the position of the light irradiation is recognized. For example, when light of a specific wavelength is irradiated to a certain photosensitive cell of the plurality of photosensitive cells through the photonic crystal layer 220, the resistance of the photosensitive material layer 230 of the irradiated photosensitive cell is rapidly reduced, and thus the first and second sensing wirings 232 and 233 electrically connected to the photosensitive material layer 230 are electrically connected to the driving wiring 231 electrically connected to the photosensitive material layer 230 through the photosensitive material layer 230. Accordingly, the driving wire 231 electrically connected to the photosensitive material layer 230 transmits an electrical signal to the first and second sensing wires 232 and 233 electrically connected to the photosensitive material layer 230, so that the first and second sensing wires 232 and 233 electrically connected to the photosensitive material layer 230 can be recognized. Since the first sensing wire 232 and the second sensing wire 233 determine the unique photosensitive material layer 230, it is possible to identify which photosensitive material layer 230 is irradiated, thereby identifying the position of light irradiation.
The photosensitive material layer 230 may be formed of a photosensitive material such as cadmium sulfide, selenium, aluminum sulfide, lead sulfide, and bismuth sulfide, which have a characteristic that its resistance rapidly decreases under light irradiation of a specific wavelength. Photosensitive materials can be generally classified into ultraviolet photosensitive materials, infrared photosensitive materials, and visible photosensitive materials. The characteristic of the photosensitive material layer 230 that its resistance rapidly decreases when irradiated with a specific wavelength is caused by an internal photoelectric effect. Specifically, when the photosensitive material layer 230 is irradiated by light, photons are excited in the photosensitive material layer 230 to generate electron-hole pairs, and the electron-hole pairs participate in electric conduction, so that current in the circuit is increased and the photosensitive material layer 230 is in a conducting state. When the photosensitive material layer 230 is not irradiated with light, electron-hole pairs generated by photon excitation are recombined, and thus the resistance of the photosensitive material layer 230 is restored to its original value.
In addition, the number, arrangement and area of the photosensitive material layer 230 may be set according to actual needs, and is not limited herein.
According to an embodiment of the present disclosure, when the photonic crystal layer 220 is configured to allow the passage of ultraviolet light, the photosensitive material layer 230 is formed of an ultraviolet photosensitive material; when the photonic crystal layer 220 is configured to allow infrared light to pass through, the photosensitive material layer 230 is formed of an infrared photosensitive material.
The driving wire 231, the first sensing wire 232, and the second sensing wire 233 may be disposed at a side of the photosensitive material layer 230 away from the substrate 200 to prevent them from blocking the control light incident through the photonic crystal layer 220 from reaching the photosensitive material layer 230.
Specifically, as shown in fig. 3, the driving wiring 231 and the first sensing wiring 232 are disposed on the photosensitive material layer 230 and electrically connected to the photosensitive material layer 230. The driving wire 231 and the first sensing wire 232 extend in the first direction X in parallel with each other on the photosensitive material layer 230 and are spaced apart from each other.
The first insulating layer 240 is disposed on the photosensitive material layer 230 and covers the driving wiring 231 and the first sensing wiring 232.
The second sensing wire 233 is disposed on the first insulating layer 240 and extends in a second direction Y perpendicular to the first direction X on the first insulating layer 240. The second sensing wiring 233 is electrically connected to the photosensitive material layer 230 through a via hole H formed in the second insulating layer 250 and exposing a portion of the photosensitive material layer 230.
The second insulating layer 250 is disposed on the first insulating layer 240 and covers the second sensing wire 233.
When the control light is irradiated to the corresponding photosensitive unit among the plurality of photosensitive units, that is, the corresponding photosensitive material layer 230 among the plurality of photosensitive material layers 230, the resistance of the photosensitive material layer 230 is lowered, and thus an electric signal applied to the driving wire 231 can be sensed from the first sensing wire 232 and the second sensing wire 233 electrically connected to the photosensitive material layer 230, so that the position of the irradiated photosensitive material layer 230 can be recognized.
The driving wiring 231, the first sensing wiring 232, and the second sensing wiring 233 are formed of a conductive material, for example, may be formed of a metal conductive material such as aluminum, molybdenum, copper, etc., an alloy thereof, and a transparent conductive metal oxide such as Indium Tin Oxide (ITO), Indium Zinc Oxide (IZO), etc. The first insulating layer 240 and the second insulating layer 250 may be formed of any insulating material, for example, may be formed of an organic insulating material or an inorganic insulating material.
Although specific examples of the arrangement of the driving wiring, the first sensing wiring, and the second sensing wiring are given above, their arrangement is not limited to such an arrangement as long as the sensing of the position of the control light can be achieved.
For example, although it is described above that the driving wiring, the first sensing wiring, and the second sensing wiring are all formed on the side of the photosensitive material layer 230 away from the substrate, the present disclosure is not limited thereto. For example, at least one of the driving wiring, the first sensing wiring, and the second sensing wiring may be disposed at a side of the photosensitive material layer 230 adjacent to the substrate. In this case, the wiring located at the substrate-adjacent side of the photosensitive material layer 230 may be formed of a transparent conductive material such as Indium Tin Oxide (ITO), Indium Zinc Oxide (IZO), or the like, to avoid affecting the control light from reaching the photosensitive material layer 230.
An exemplary embodiment of the present disclosure provides a display device that can be controlled by control light, including a color filter substrate and an array substrate according to any of the above embodiments. As described above, the photonic crystal layer that blocks visible light and allows light of a certain wavelength range to pass is disposed between the color resist blocks of the color filter substrate, so that the photonic crystal layer can function as a black matrix and also allow light of the display device to pass. Since a separate opening through which light controlling the display device passes is not required, it is advantageous to improve the pixel aperture ratio of the display device.
The display device will be described in detail below with reference to the drawings and embodiments.
Fig. 4 is a schematic cross-sectional view of a display device according to an embodiment of the present disclosure, taken along line I-I' in fig. 2. As shown in fig. 2 and 4, a display device according to an embodiment of the present disclosure includes the color filter substrate 001 and the array substrate 310 described above with reference to fig. 1. As described above, the color filter substrate 001 includes: a substrate 100; a plurality of color resist blocks 110 disposed on the substrate 100; and a photonic crystal layer 120 disposed on the substrate 100 and between adjacent color-resist blocks 110, wherein the photonic crystal layer 120 is configured to block visible light and allow light of a wavelength range to pass therethrough.
The color filter substrate 001 is described in detail above with reference to fig. 1, and will not be described again here.
The array substrate 310 may be a TFT-LCD array substrate, or an OLED array substrate, and is disposed facing the color filter substrate 001. Therefore, light emitted from the array substrate 310 is emitted through the color resist 110 of the color filter substrate 001, thereby displaying a color image.
The display device further includes a plurality of light sensing units for sensing light of a specific wavelength range incident through the photonic crystal layer 120. As shown in fig. 4, a plurality of photosensitive units are integrated on a surface of the array substrate 310 facing the color filter substrate 001.
The plurality of photosensitive cells are spaced apart from each other to sense the position of the control light incident through the photonic crystal layer 120. The plurality of photosensitive cells may be separated from each other by a third insulating layer 350. The third insulating layer 350 may be formed of a transparent insulating material to correspond to the plurality of color resist blocks 110 so that light emitted from the array substrate 310 may reach the color resist blocks 110 through the third insulating layer 350.
The photosensitive unit may include a photosensitive material layer 320. The photosensitive material layer 320 is coupled to a driving wiring 321, a first sensing wiring 322 extending in a first direction X, and a second sensing wiring 323 extending in a second direction Y, wherein the first direction X may be perpendicular to the second direction Y. The photosensitive material layer 320 rapidly decreases in resistance under irradiation of light of a specific wavelength, and thus the first and second sensing wirings 322 and 323 are electrically connected to the driving wiring 321 via the photosensitive material layer 320, so that an electrical signal applied via the driving wiring 321 is transmitted to the first and second sensing wirings 322 and 323, and thus the position of light irradiation is recognized.
The photosensitive material layer 320 may be formed of a photosensitive material such as cadmium sulfide, selenium, aluminum sulfide, lead sulfide, and bismuth sulfide, which have a characteristic that its resistance rapidly decreases under light irradiation of a specific wavelength. Photosensitive materials can be generally classified into ultraviolet photosensitive materials, infrared photosensitive materials, and visible photosensitive materials. The characteristic of the photosensitive material layer 320 that its resistance rapidly decreases when irradiated with a specific wavelength is caused by an internal photoelectric effect. Specifically, when the photosensitive material layer 320 is irradiated by light, photons are excited in the photosensitive material layer 320 to generate electron-hole pairs, and the electron-hole pairs participate in electric conduction, so that current in the circuit is increased, and the photosensitive material layer 320 is in a conducting state; when the photosensitive material layer 320 is not irradiated by light, electron-hole pairs generated by photon excitation are recombined, and thus the resistance of the photosensitive material layer 320 is restored to its original value.
In addition, the number, arrangement and area of the photosensitive material layer 320 may be set according to actual needs, and is not limited herein.
According to an embodiment of the present disclosure, when the photonic crystal layer 120 allows ultraviolet light to pass therethrough, the photosensitive material layer 320 is formed of an ultraviolet photosensitive material; the photosensitive material layer 320 is formed of an infrared photosensitive material when the photonic crystal layer 120 allows infrared light to pass therethrough.
As shown in fig. 4, the driving wiring 321 and the first sensing wiring 322 are disposed in parallel to each other along the first direction X on one side surface of the array substrate 310 facing the color filter substrate 001 and spaced apart from each other.
The photosensitive material layer 320 is disposed on a surface of the array substrate 310 on a side facing the color filter substrate 001 and drives the wiring 321 and the first sensing wiring 322 to be electrically connected to the driving wiring 321 and the first sensing wiring 322.
The first insulating layer 330 is disposed on a surface of the photosensitive material layer 320 facing the color filter substrate 001. The first insulating layer 330 is provided therein with a via hole H exposing a portion of the photosensitive material layer 320.
The second sensing wiring 323 is disposed on the first insulating layer 330 and extends in a second direction Y perpendicular to the first direction X on the first insulating layer 330. The second sensing wiring 323 is electrically connected to the photosensitive material layer 320 through the via hole H.
The second insulating layer 340 is disposed on the first insulating layer 330 and covers the second sensing wiring 323.
When the control light is irradiated to the corresponding photosensitive unit among the plurality of photosensitive units, that is, the corresponding photosensitive material layer 320 among the plurality of photosensitive material layers 320, the resistance of the photosensitive material layer 320 is lowered, and thus an electric signal applied to the driving wire 321 can be sensed from the first sensing wire 322 and the second sensing wire 323 electrically connected to the photosensitive material layer 320, so that the position of the irradiated photosensitive material layer 320 can be recognized.
The driving wiring 321 and the first sensing wiring 322 are formed of a conductive material, for example, may be formed of a metal conductive material such as aluminum, molybdenum, copper, etc., an alloy thereof, and a transparent conductive metal oxide such as Indium Tin Oxide (ITO), Indium Zinc Oxide (IZO), etc. The second sensing wiring 323 is formed of a transparent conductive metal oxide such as Indium Tin Oxide (ITO), Indium Zinc Oxide (IZO), etc. to avoid affecting control light from reaching the photosensitive material layer 320. The first insulating layer 330 and the second insulating layer 340 may be formed of any insulating material, for example, may be formed of an organic insulating material or an inorganic insulating material.
Although specific examples of the arrangement of the driving wiring, the first sensing wiring, and the second sensing wiring are given above, their arrangement is not limited to such an arrangement as long as the sensing of the position of the control light can be achieved.
For example, although it is given that the driving wiring and the first sensing wiring are disposed on the side of the photosensitive material layer 320 away from the color filter substrate 001, the disclosure is not limited thereto. For example, the driving wiring, the first sensing wiring and the second sensing wiring may be disposed on the same side of the photosensitive material layer, for example, a side away from the color filter substrate or a side facing the color filter substrate.
According to one embodiment of the disclosure, the driving wires may be disposed on a side of the photosensitive material layer away from the substrate and further coupled to the plurality of pixel units of the array substrate to drive the plurality of pixel units. That is, the driving wiring may be used as a common electrode, such as a TFT-LCD array substrate or an OLED array substrate, for driving the pixel unit to emit light. The drive wiring thus arranged can reduce the number of wirings, resulting in an improvement in integration. In such an arrangement of the driving wirings, an electrical signal for sensing the control light may be applied to the driving wirings between frames displayed by the display device.
Fig. 5 is a schematic cross-sectional view of a display device taken along line I-I' in fig. 2 according to another embodiment of the present disclosure. As shown in fig. 2 and 5, a display device according to an embodiment of the present disclosure includes the color filter substrate 002 and the array substrate 410 described above with reference to fig. 3. Unlike the integration of multiple photosensitive units on the array substrate described above with reference to fig. 4, in the present embodiment, multiple photosensitive units are integrated on the color filter substrate.
The color filter substrate 002 has already been described in detail with reference to fig. 3, and therefore, the description thereof is omitted here.
The array substrate 410 may be a TFT-LCD array substrate, or an OLED array substrate, and is disposed facing the color filter substrate 002. Therefore, light emitted from the array substrate 410 is emitted through the color resist 210 of the color filter substrate 002, and a color screen is displayed.
Embodiments of the present disclosure provide a control device for controlling the above display device. Fig. 6 is a view schematically showing a control apparatus for controlling a display apparatus according to an embodiment of the present disclosure.
As shown in fig. 6, the control device may include a light source 610. The light source 610 may emit a light beam of visible light and a light beam of light of a specific wavelength range that can control the display device. The emitted beam of visible light may be used for a user to observe the position of the beam on the display device and the beam of light of a specific wavelength range may be used for controlling the display device.
The light source 610 may include a first sub light source 611 and a second sub light source 612. The first sub light source 611 may emit a beam of visible light, and the second sub light source 612 may emit a beam of light of a specific wavelength range, for example, an ultraviolet light beam or an infrared light beam, for controlling the display apparatus.
In addition, the control device may further include a first switch 621 and a second switch 622. The first switch may be used to control the turning on and off of the first sub light source 611; the second switch 622 may be used to control the turning on and off of the second sub light source 612.
Here, the control device may be designed as a laser pointer. An example of controlling the display device by the control device is described below.
The first sub light source 611 may be first turned on by the first switch 621 to emit a visible light beam. At this time, the visible light beam cannot pass through the photonic crystal layer of the display device, and its irradiation appears as a light spot on the display device (e.g., screen) and thus can be observed by a user for controlling the positioning. After the user finds a desired control content on the display device through the visible light beam, the user may turn on the second sub light source through the second switch 622 to emit a control light such as ultraviolet light or infrared light. The control light is irradiated on the display device and irradiated to the corresponding light sensing unit via the photonic crystal layer, thereby generating a control signal as described above, and realizing control of the display device.
The foregoing description of specific exemplary embodiments of the present disclosure has been presented with reference to the accompanying drawings. These exemplary embodiments are not intended to be exhaustive or to limit the disclosure to the precise forms disclosed, and obviously many modifications and variations are possible to those skilled in the art in light of the above teachings. Accordingly, the scope of the present disclosure is not intended to be limited to the foregoing embodiments, but is intended to be defined by the claims and their equivalents.
Claims (12)
1. A color filter substrate, comprising:
a substrate;
a plurality of color resist blocks on the substrate; and
a photonic crystal layer on the substrate and between adjacent color-resist blocks, wherein the photonic crystal layer is configured to block visible light and allow light of a wavelength range to pass through;
a plurality of light sensing units configured to sense light of the wavelength range incident through the photonic crystal layer, the light sensing units including a photosensitive material layer electrically connected to the driving wiring, a first sensing wiring extending in a first direction, and a second sensing wiring extending in a second direction, wherein the first direction is perpendicular to the second direction.
2. The color filter substrate of claim 1, wherein the range of wavelengths of light comprises ultraviolet light and infrared light.
3. The color filter substrate according to claim 1, wherein the plurality of photosensitive units are located on the side of the photonic crystal layer away from the substrate.
4. The color filter substrate according to claim 3, wherein the driving wiring, the first sensing wiring and the second sensing wiring are arranged on one side of the photosensitive material layer away from the substrate.
5. A display device comprises an array substrate and a color film substrate, wherein the color film substrate comprises:
a substrate;
a plurality of color resist blocks on the substrate; and
a photonic crystal layer on the substrate and between adjacent color-resist blocks, wherein the photonic crystal layer is configured to block visible light and allow light of a wavelength range to pass through;
a plurality of light sensing units configured to sense light of the wavelength range incident through the photonic crystal layer, the light sensing units including a photosensitive material layer electrically connected to the driving wiring, a first sensing wiring extending in a first direction, and a second sensing wiring extending in a second direction, wherein the first direction is perpendicular to the second direction.
6. The display device of claim 5, wherein the range of wavelengths of light includes ultraviolet light and infrared light.
7. The display device according to claim 5, wherein the plurality of photosensitive cells are integrated on a side surface of the photonic crystal layer away from the substrate.
8. The display device according to claim 7, wherein the driving wiring, the first sensing wiring, and the second sensing wiring are disposed on a side of the photosensitive material layer away from the substrate.
9. The display device according to claim 5, wherein the plurality of photosensitive units are integrated on a surface of one side of the array substrate facing the color filter substrate.
10. The display device according to claim 9, wherein a driving wiring is disposed at a side of the photosensitive material layer away from the base and is further electrically connected to the plurality of pixel cells of the array substrate to drive the plurality of pixel cells.
11. A control device for a display device according to any one of claims 5 to 10, comprising: a light source configured to emit a beam of visible light and a beam of light emitting light of the wavelength range.
12. The control device of claim 11, the light source comprising
A first sub-light source configured to emit a beam of visible light;
a second sub-light source configured to emit a beam of light of the wavelength range.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910144299.0A CN109656420B (en) | 2019-02-27 | 2019-02-27 | Color film substrate, display device and control device thereof |
| PCT/CN2020/076542 WO2020173420A1 (en) | 2019-02-27 | 2020-02-25 | Display substrate, display apparatus and control apparatus therefor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910144299.0A CN109656420B (en) | 2019-02-27 | 2019-02-27 | Color film substrate, display device and control device thereof |
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| WO2020173420A1 (en) | 2020-09-03 |
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