CN112667108A - Touch display device and touch method thereof - Google Patents
Touch display device and touch method thereof Download PDFInfo
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- CN112667108A CN112667108A CN202110003273.1A CN202110003273A CN112667108A CN 112667108 A CN112667108 A CN 112667108A CN 202110003273 A CN202110003273 A CN 202110003273A CN 112667108 A CN112667108 A CN 112667108A
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Abstract
The invention provides a touch display device and a touch method thereof. The touch display device comprises a display panel and a touch panel, wherein the touch panel comprises a light receiving layer, a light transmitting layer, a light conducting layer and a first light emitter. The light receiving layer is provided with a plurality of light sensors. The light conducting layer is arranged on the light transmitting layer. The refractive index of the light conducting layer is larger than that of the light transmitting layer. The first light emitter is arranged on one side face of the light conduction layer and used for emitting light with a first wavelength, and the light with the first wavelength is totally reflected in the light conduction layer. The touch display device is further provided with a second light emitter, and the second light emitter is used for remotely emitting light with a second wavelength to the touch display device. The light sensor is used for receiving and identifying the light with the first wavelength and the light with the second wavelength. The problems of low accuracy and low efficiency of the conventional remote laser touch control are solved.
Description
Technical Field
The invention relates to the technical field of display, in particular to a touch display device and a touch method thereof.
Background
With the development of display technologies, display devices having an interactive function are receiving more and more attention. For example, a display screen with a touch function can not only display images, but also feed back the will of a person to the screen in time. However, the conventional touch screen can only perform touch control by a contact operation of a human hand or a stylus, thereby limiting a touch distance. When facing a large-size display screen, close-distance touch control can cause difficulty in achieving full-screen touch control. And the operator can not observe the whole screen well, so that the development of large-size touch display screens and related products is limited.
And the touch screen combining the near-distance finger touch and the remote laser touch can maximize the interaction effect and improve the added value of the product. According to the traditional remote laser control method, a camera outside a screen is used for detecting light spots of a laser pen, then a touch position is calculated through a computer algorithm and fed back to the screen for display, and therefore the problems of low accuracy and low efficiency are solved.
Therefore, the problems of low precision and low efficiency of the existing remote laser touch control are required to be solved.
Disclosure of Invention
The invention provides a touch display device and a touch method thereof, which are used for solving the technical problems of low precision and low efficiency of the conventional remote laser touch.
In order to solve the above problems, the technical scheme provided by the invention is as follows:
the embodiment of the invention provides a touch display device, which comprises a display panel and a touch panel, wherein the touch panel is arranged on a light emergent surface of the display panel. The touch panel comprises a light receiving layer, a light transmitting layer, a light conducting layer and a first light emitter. The light receiving layer is in contact with the display panel and is provided with a plurality of light sensation sensors. The light transmitting layer is arranged on the surface, far away from the display panel, of the light receiving layer. The light conducting layer is arranged on the light transmitting layer. The refractive index of the light conducting layer is larger than that of the light transmitting layer. The first light emitter is arranged on one side face of the light conducting layer and used for emitting light with a first wavelength. The light sensation sensor is used for receiving and identifying the light with the first wavelength.
In the touch display device provided in the embodiment of the present invention, the touch display device is further configured with a second light emitter, the second light emitter is configured to emit light with a second wavelength to the touch display device from a distance, and the light sensor is further configured to receive and identify the light with the second wavelength.
In the touch display device provided by the embodiment of the invention, both the light with the first wavelength and the light with the second wavelength fall within a band range of near infrared light.
In the touch display device provided in the embodiment of the invention, the touch panel further includes a light blocking portion, and the light blocking portion is disposed on the other side surface of the light conducting layer and is opposite to the first light emitter.
In the touch display device provided by the embodiment of the invention, the display panel includes a first substrate and a second substrate which are oppositely arranged, the second substrate includes color films which are arranged at intervals and black matrixes which are arranged in the color film intervals, and the light sensation sensors are arranged corresponding to the black matrixes.
In the touch display device provided by the embodiment of the invention, the display panel comprises a plurality of sub-pixels arranged at intervals, and the light-sensing sensors are arranged above the adjacent sub-pixels at intervals.
In the touch display device provided by the embodiment of the invention, the touch display device further comprises a signal processing unit and a signal transmission unit, wherein a signal input end of the signal processing unit is connected with the touch panel, a signal output end of the signal processing unit is connected with a signal input end of the signal transmission unit, and a signal output end of the signal transmission unit is connected with the display panel.
The embodiment of the invention also provides a touch method of the touch display device, and the touch display device comprises a display panel, a touch panel, a signal processing unit and a signal transmission unit. The touch panel is arranged on the light-emitting surface of the display panel. The touch panel comprises a light receiving layer, a light transmitting layer, a light conducting layer and a first light emitter, wherein the light receiving layer, the light transmitting layer and the light conducting layer are arranged in a stacked mode, and the first light emitter is arranged on one side face of the light conducting layer. The light receiving layer is provided with a plurality of light sensors. The refractive index of the light conducting layer is larger than that of the light transmitting layer. The touch method of the touch display device comprises the following steps: the first light emitter emits light at a first wavelength that is conducted at the light-conducting layer; the light sensor receives and identifies the light with the first wavelength; the light sensor converts the received optical signal of the light with the first wavelength into an electric signal and sends the electric signal to the signal processing unit; the signal processing unit calculates the coordinates of the touch position according to the received electric signals; the signal processing unit sends the calculated coordinate data of the touch position to the signal transmission unit; the signal transmission unit sends the received coordinate data of the touch position to the display panel; the display panel makes feedback.
In the touch method of the touch display device provided in the embodiment of the present invention, the touch display device is further configured with a second light emitter, the second light emitter emits light with a second wavelength, the light with the second wavelength is irradiated onto the touch panel, the light with the second wavelength reaches the light sensor through the light conductive layer and the light transmissive layer, and the light sensor receives and recognizes the light with the second wavelength.
In the touch method of the touch display device provided by the embodiment of the invention, both the light with the first wavelength and the light with the second wavelength fall within a near-infrared light band range.
The invention has the beneficial effects that: the touch display device and the touch method thereof provided by the invention are characterized in that the light-sensitive sensors are arranged in an array on the light-receiving layer of the touch panel. The light sensor is configured to be capable of receiving and identifying near infrared light with different wavelengths emitted by the first light emitter and the second light emitter, so that near finger touch and far laser touch are achieved. And the touch data is processed, transmitted and fed back by the same control system. The precision and the efficiency of remote laser touch control are improved.
Drawings
In order to illustrate the embodiments or the technical solutions in the prior art more clearly, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for a person skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic cross-sectional view of a touch display device according to a first embodiment of the invention;
fig. 2 is a schematic cross-sectional view of a display panel according to an embodiment of the invention;
FIG. 3 is a schematic diagram illustrating total reflection of light with a first wavelength in an optical transmission layer according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a close-range finger touch operation according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a remote laser pointer during touch control according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a matrix arrangement of light-sensitive sensors according to an embodiment of the present invention;
fig. 7 is a schematic block diagram of a touch control principle provided in an embodiment of the present invention;
fig. 8 is a schematic cross-sectional view of a second cross-sectional structure of a touch display device according to an embodiment of the invention.
Detailed Description
The following description of the various embodiments refers to the accompanying drawings that illustrate specific embodiments in which the invention may be practiced. The directional terms mentioned in the present invention, such as [ upper ], [ lower ], [ front ], [ rear ], [ left ], [ right ], [ inner ], [ outer ], [ side ], are only referring to the directions of the attached drawings. Accordingly, the directional terms used are used for explanation and understanding of the present invention, and are not used for limiting the present invention. In the drawings, elements having similar structures are denoted by the same reference numerals. In the drawings, the thickness of some layers and regions are exaggerated for clarity of understanding and ease of description. That is, the size and thickness of each component shown in the drawings are arbitrarily illustrated, but the present invention is not limited thereto.
In one embodiment, a touch display device is provided that enables near finger or stylus touch and far laser touch. Referring to fig. 1, a touch display device 1000 includes a display panel 100 and a touch panel 200, wherein the touch panel 200 is disposed on a light emitting surface of the display panel 100. The light emitting surface of the display panel 100, i.e., the display panel 100, is used for displaying the upper surface of the pixels. The touch panel 200 includes a light receiving layer 20, a light transmitting layer 30, a light conducting layer 40, and a first light emitter 50. The light receiving layer 20 is in contact with the display panel 100, and the light receiving layer 20 is provided with a plurality of light sensors 21. The light-transmitting layer 30 is disposed on a surface of the light-receiving layer 20 away from the display panel 100. The light-transmitting layer 40 is disposed on the light-transmitting layer 30. The first light emitter 50 is disposed on one side of the light conductive layer 40 for emitting light of a first wavelength.
Specifically, as shown in fig. 2, the display panel 100 includes a first substrate 11 and a second substrate 12 disposed opposite to each other, and a plurality of liquid crystal molecules 13 disposed between the first substrate 11 and the second substrate 12. Of course, the touch display device 1000 further includes a backlight module (not shown) located below the display panel 100. The backlight module provides backlight to the display panel 100.
Specifically, the first substrate 11 is an array substrate, and the second substrate 12 is a color filter substrate. Of course, the Array substrate may include a Gate Driver on Array (GOA) substrate or other conventional Array substrates. The second substrate 12 includes a base 121, a color film layer 122 disposed on the base 121, and a transparent adhesive layer 123 disposed on the color film layer 122. The color film layer 122 includes color films 1221 arranged at intervals and black matrixes 1222 located in the intervals of the color films 1221. The color films 1221 include a red color film, a green color film, and a blue color film, the backlight may display different colors through the color films of different colors, and the different color mixtures may make the display panel 100 display different colors. The transparent adhesive layer 123 can protect the color film layer 122, and the surface of the color film layer 122 is flat. The black matrix 1222 shields stray light from the backlight, preventing light leakage.
Further, the light receiving layer 20 is in contact with the display panel 100, that is, the light receiving layer 20 is disposed on a surface of the second substrate 12 away from the first substrate 11. The light receiving layer 20 is provided with a plurality of light sensors 21, the light sensors 21 are disposed corresponding to the black matrix 1222, and the size of the light sensors 21 is equal to or smaller than the size of the black matrix 1222, so as to prevent the light sensors 21 from affecting the normal display of the display panel 100.
Further, with continued reference to fig. 1, the light-transmitting layer 30 is disposed on the light-receiving layer 20. The transparent layer 30 may be a layer of glass or other transparent thin film, and the light conductive layer 40 may also be a layer of glass or other transparent thin film, of course, the light conductive layer 40 may also be a cover plate of the touch display device 1000. Wherein the refractive index of the light conductive layer 40 is greater than the refractive index of the light transmissive layer 30 and greater than the refractive index of air.
Further, referring to fig. 1 and fig. 3 in combination, the first light emitter 50 is fixed on one side surface 41 of the light conducting layer 40 through a glue, but the invention is not limited thereto, and the first light emitter 50 of the invention may also be fixed on a middle frame (not shown) of the touch display device 1000. The light emitting surface of the first light emitter 50 and the side surface 41 of the light conducting layer 40 form a predetermined included angle. The preset included angle is required to satisfy that an incident angle a when the light emitted from the first light emitter 50 is incident on the upper surface 42 of the light conductive layer 40 is greater than or equal to a critical angle, so that the light emitted from the first light emitter 50 can be totally reflected on the upper surface 42 of the light conductive layer 40. When the reflected light from the upper surface of the optical conduction layer 40 is further emitted to the lower surface 43 of the optical conduction layer 40, the light reflected to the lower surface 43 of the optical conduction layer 40 can be totally reflected at the lower surface 43 because the refractive index of the optical conduction layer 40 is greater than that of the light-transmitting layer 30. In this way, the light emitted from the first light emitter 50 is totally reflected inside the entire photoconductive layer 40 and is transmitted from one side surface 41 to the other side surface 44 of the photoconductive layer 40. The critical angle is an incident angle corresponding to a refraction angle of 90 degrees when light is transmitted from the optically dense medium to the optically sparse medium. The upper surface 42 of the light conductive layer 40 refers to a surface of the light conductive layer 40 away from the light transmissive layer 30, and the lower surface 43 of the light conductive layer 40 refers to a surface of the light conductive layer 40 contacting the light transmissive layer 30.
Further, with continued reference to fig. 1 and 3, the touch panel 200 further includes a light blocking portion 60, and the light blocking portion 60 is disposed on the other side surface 44 of the light conducting layer 40 and is opposite to the first light emitter 50. When the light emitted from the first light emitter 50 is transmitted from one side surface 41 to the other side surface 44 of the light conductive layer 40, the corresponding light blocking portion 60 can block the light from being emitted from the other side surface 44 of the light conductive layer 40.
Further, the first light emitter 50 comprises an infrared LED, and the first light emitter 50 emits light of a first wavelength. The light of the first wavelength falls within a band range of near-infrared light.
Further, as shown in fig. 4, when the touch display device 1000 is touched by a finger, a stylus, or the like, a touch position is deformed due to pressure, and the deformation may cause total reflection in the optical conduction layer 40 to be broken at the touch position. So that a part of the light of the first wavelength is refracted out from the lower surface of the light conductive layer 40, the refracted light of the first wavelength reaches the light sensor 21 through the light-transmissive layer 30, and the light sensor 21 receives and recognizes the light of the first wavelength.
Further, referring to fig. 1 and 5 in combination, the touch display device 1000 is further configured with a second light emitter 70, and the second light emitter 70 includes a laser pointer. The second light emitter 70 is configured to emit light of a second wavelength, which also falls within a wavelength band of the near-infrared light, and which is different from the first wavelength.
Further, when the light of the second wavelength emitted by the second light emitter 70 is directed to the touch display device 1000, the light of the second wavelength passes through the light conductive layer 40 and the light transmissive layer 30 to reach the light sensor 21. The light sensor 21 receives and recognizes the light of the second wavelength. It should be noted that the light sensor 21 is configured to receive and identify near-infrared light of a specific wavelength band, and both the light of the first wavelength and the light of the second wavelength fall within the near-infrared light of the specific wavelength band. The second light emitter 70 emits light of a third wavelength simultaneously with the light of the second wavelength, the light of the third wavelength includes red visible light of a specific wavelength, and when the light of the third wavelength is irradiated to the surface of the touch display device, a light spot appears at an irradiation position to show the touch position to an operator. That is, the second light emitter 70 emits the near-infrared light of the second wavelength and the red visible light of the third wavelength.
Specifically, the light sensors 21 are arranged in a matrix on the light receiving layer 20, and as shown in fig. 6, a two-dimensional coordinate system is constructed according to the matrix arrangement of the light sensors 21. In fig. 6, the light sensors 21 are regularly arranged in m rows along the X axis, each row includes n light sensors 21, and each row of the light sensors 21 corresponds to one first light emitter 50. The light sensors 21 are regularly arranged in n rows along the Y axis, and each row includes m light sensors 21. The matrix has m by n of said photosensors 21. Each of the light sensors 21 has a fixed X coordinate and a fixed Y coordinate in a coordinate system. It should be noted that the number of the light-sensing sensors 21 may be determined according to the actual size and the actual requirement of the display panel 100, for example, several thousands to ten thousands may be provided.
Further, since each of the light-sensing sensors 21 has fixed X and Y coordinates, when light emitted by the touch display device 1000 or the laser pen is irradiated to the touch display device 1000 by a finger, the light-sensing sensors 21 can receive light signals, convert the light signals into electrical signals, and transmit the electrical signals to an external signal processing unit for reading and identifying, so as to determine the X and Y coordinates of a touch position where the laser pen or the finger touches the touch display device 1000.
Specifically, as shown in fig. 7, the touch display device 1000 further includes a signal processing unit 300 and a signal transmission unit 400, a signal input end of the signal processing unit 300 is connected to the touch panel 200, a signal output end of the signal processing unit 300 is connected to a signal input end of the signal transmission unit 400, and a signal output end of the signal transmission unit 400 is connected to the display panel 100.
Specifically, the light sensor 21 of the touch panel 200 converts the received light signal into an electrical signal and transmits the electrical signal to the signal processing unit 300. The signal processing unit 300 calculates the X and Y coordinates of the touch position according to the received electrical signal. The signal processing unit 300 sends the calculated coordinate data of the touch position to the signal transmission unit 400, the signal transmission unit 400 sends the received coordinate data of the touch position to the control unit 500 of the display panel 100, the control unit 500 sends an instruction to the display panel 100, and the display panel 100 makes feedback.
In one embodiment, different from the above embodiments, the display panel includes a plurality of sub-pixels disposed at intervals, and the light-sensing sensors are disposed above and opposite to the intervals between adjacent sub-pixels. Specifically, as shown in the touch display device 1001 of fig. 8, the display panel 100' includes a substrate 14 and a plurality of sub-pixels 15 disposed on the substrate 14, and the plurality of sub-pixels 15 are disposed at intervals. The sub-pixels 15 include a red sub-pixel, a green sub-pixel, and a blue sub-pixel. The touch panel 200 'is disposed on the light emitting surface of the display panel 100'. The photo sensors 21 ' of the light receiving layer 20 ' are disposed relatively above the interval between the adjacent sub-pixels 15 to avoid the influence of light emitted from the display panel 100 '. For other descriptions, please refer to the above embodiments, which are not repeated herein.
In an embodiment, referring to fig. 1 to 7 in combination, a touch method of a touch display device is provided, and the touch display device 1000 includes a display panel 100, a touch panel 200, a signal processing unit 300, and a signal transmission unit 400. The touch panel 200 is disposed on a light emitting surface of the display panel 100. The touch panel 200 includes a light receiving layer 20, a light transmitting layer 30, a light conducting layer 40, and a first light emitter 50 disposed on one side of the light conducting layer 40. The light receiving layer 20 is provided with a plurality of light sensors 21. The refractive index of the light conductive layer 40 is greater than that of the light transmissive layer 30.
Specifically, the touch method of the touch display device includes the following steps:
the first light emitter 50 emits light at a first wavelength that is conducted at the optically conductive layer 40;
the light sensor 21 receives and recognizes the light of the first wavelength;
the photosensor 21 converts the received optical signal of the light of the first wavelength into an electrical signal and transmits the electrical signal to the signal processing unit 300;
the signal processing unit 300 calculates the coordinates of the touch position according to the received electrical signal;
the signal processing unit 300 transmits the calculated coordinate data of the touch position to the signal transmission unit 400;
the signal transmission unit 400 transmits the received coordinate data of the touch position to the display panel 100;
the display panel 100 makes feedback.
Further, the touch display device 1000 is further configured with a second light emitter 70, and the touch method of the touch display device further includes:
the light sensor 21 receives and identifies the light with the second wavelength emitted by the second light emitter;
the photosensor 21 converts the received optical signal of the light of the second wavelength into an electrical signal and transmits the electrical signal to the signal processing unit 300;
the signal processing unit 300 calculates the coordinates of the touch position according to the received electrical signal;
the signal processing unit 300 transmits the calculated coordinate data of the touch position to the signal transmission unit 400;
the signal transmission unit 400 transmits the received coordinate data of the touch position to the display panel 100;
the display panel 100 makes feedback.
Specifically, the first light emitter 50 includes an infrared LED, and the second light emitter 70 includes a laser pointer.
Specifically, the second light emitter 70 emits the light with the second wavelength to the touch display device 1000 under the operation of the operator.
Further, the light of the first wavelength and the light of the second wavelength each include near-infrared light.
Specifically, the display panel 100 includes an LCD display panel, an OLED display panel, or other display panels.
According to the above embodiments:
the invention provides a touch display device and a touch method thereof. The touch panel comprises a light receiving layer, a light transmitting layer, a light conducting layer and a first light emitter, wherein the light receiving layer, the light transmitting layer and the light conducting layer are arranged in a stacked mode, and the first light emitter is arranged on one side face of the light conducting layer. The light receiving layer is provided with light sensors which are arranged in an array. The touch display device is also provided with a second light emitter. The light sensation sensor is configured to be capable of receiving and identifying light with different wavelengths emitted by the first light emitter and the second light emitter, so that close-distance finger touch and long-distance laser touch are achieved. And the signal processing unit and the signal transmission unit are used for finishing the processing, transmission and feedback of touch data. The precision and the efficiency of remote laser touch control are improved.
In summary, although the present invention has been described with reference to the preferred embodiments, the above-described preferred embodiments are not intended to limit the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, therefore, the scope of the present invention shall be determined by the appended claims.
Claims (10)
1. A touch display device, comprising a display panel and a touch panel, wherein the touch panel is disposed on a light-emitting surface of the display panel, and the touch panel comprises:
a light receiving layer in contact with the display panel, the light receiving layer being provided with a plurality of light sensors;
the light transmitting layer is arranged on the surface, far away from the display panel, of the light receiving layer;
the light transmitting layer is arranged on the light transmitting layer, and the refractive index of the light transmitting layer is larger than that of the light transmitting layer; and
a first light emitter disposed on one side of the light conductive layer for emitting light of a first wavelength;
the light sensation sensor is used for receiving and identifying the light with the first wavelength.
2. The touch display device of claim 1, further configured with a second light emitter configured to emit light of a second wavelength to the touch display device remotely, the light sensor further configured to receive and identify the light of the second wavelength.
3. The touch display device of claim 2, wherein the first wavelength of light and the second wavelength of light both fall within a band range of near-infrared light.
4. The touch display device according to claim 1, wherein the touch panel further comprises a light blocking portion disposed on the other side surface of the light conducting layer and opposite to the first light emitter.
5. The touch display device of claim 4, wherein the display panel comprises a first substrate and a second substrate which are arranged oppositely, the second substrate comprises color films which are arranged at intervals and black matrixes which are arranged in the color film intervals, and the light sensor and the black matrixes are arranged correspondingly.
6. The touch display device as recited in claim 4, wherein the display panel comprises a plurality of sub-pixels arranged at intervals, and the light sensor is arranged above and opposite to the interval between the adjacent sub-pixels.
7. The touch display device according to claim 1, further comprising a signal processing unit and a signal transmission unit, wherein a signal input terminal of the signal processing unit is connected to the touch panel, a signal output terminal of the signal processing unit is connected to a signal input terminal of the signal transmission unit, and a signal output terminal of the signal transmission unit is connected to the display panel.
8. The touch method of the touch display device is characterized in that the touch display device comprises a display panel, a touch panel, a signal processing unit and a signal transmission unit, wherein the touch panel is arranged on a light emergent surface of the display panel, the touch panel comprises a light receiving layer, a light transmitting layer, a light conducting layer and a first light emitter, the light receiving layer, the light conducting layer and the first light emitter are arranged on one side surface of the light conducting layer in a stacked mode, the light receiving layer is provided with a plurality of light sensors, and the refractive index of the light conducting layer is larger than that of the light transmitting layer; the touch method of the touch display device comprises the following steps:
the first light emitter emits light at a first wavelength that is conducted at the light-conducting layer;
the light sensor receives and identifies the light with the first wavelength;
the light sensor converts the received optical signal of the light with the first wavelength into an electric signal and sends the electric signal to the signal processing unit;
the signal processing unit calculates the coordinates of the touch position according to the received electric signals;
the signal processing unit sends the calculated coordinate data of the touch position to the signal transmission unit;
the signal transmission unit sends the received coordinate data of the touch position to the display panel; and
the display panel makes feedback.
9. The touch method of the touch display device according to claim 8, wherein the touch display device is further configured with a second light emitter for emitting light with a second wavelength, and the touch method further comprises:
the light sensor receives and identifies the light of the second wavelength.
10. The touch method of the touch display device according to claim 8, wherein the first wavelength light and the second wavelength light both fall within a band range of near-infrared light.
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| CN202110003273.1A CN112667108A (en) | 2021-01-04 | 2021-01-04 | Touch display device and touch method thereof |
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| CN202110003273.1A CN112667108A (en) | 2021-01-04 | 2021-01-04 | Touch display device and touch method thereof |
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| CN112667108A true CN112667108A (en) | 2021-04-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115016677A (en) * | 2021-09-28 | 2022-09-06 | 荣耀终端有限公司 | Touch control assembly and electronic equipment |
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| CN101587254A (en) * | 2009-05-19 | 2009-11-25 | 香港应用科技研究院有限公司 | Touch induction liquid crystal display |
| CN102968220A (en) * | 2011-08-29 | 2013-03-13 | 三星电子株式会社 | Touch sensing and remote sensing optical touch screen apparatuses |
| CN105808021A (en) * | 2016-03-09 | 2016-07-27 | 京东方科技集团股份有限公司 | Light-sensing touch panel, display apparatus and touch positioning method |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101587254A (en) * | 2009-05-19 | 2009-11-25 | 香港应用科技研究院有限公司 | Touch induction liquid crystal display |
| CN102968220A (en) * | 2011-08-29 | 2013-03-13 | 三星电子株式会社 | Touch sensing and remote sensing optical touch screen apparatuses |
| CN105808021A (en) * | 2016-03-09 | 2016-07-27 | 京东方科技集团股份有限公司 | Light-sensing touch panel, display apparatus and touch positioning method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115016677A (en) * | 2021-09-28 | 2022-09-06 | 荣耀终端有限公司 | Touch control assembly and electronic equipment |
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